When Is the Cheapest Time to Buy Flights?

August 28, 2026 · 20 min read

When Is the Cheapest Time to Buy Flights? Global Booking Guide for Commercial and Private Travel

Flight prices can change repeatedly between the moment an airline publishes its schedule and the day the aircraft departs. This has created countless theories about the cheapest day to buy flights: Tuesday morning, Sunday night, after midnight or while browsing in incognito mode.

In reality, there is no universal day or hour when every flight becomes cheaper. The best time to buy depends on the route, season, destination, available capacity, competition between airlines and how flexible the passenger can be.

Commercial airlines and private jet charters also use completely different pricing models. Airlines sell individual seats through changing fare classes. Private aircraft are priced as complete missions based on aircraft availability, positioning, flight time, crew and airport costs.

This guide explains when to buy domestic and international airline tickets, which flight aggregators are most useful—particularly for American travellers—and when to reserve a private jet for the best combination of price and availability.

As a general starting point:

Airlines divide the seats in the same cabin into different fare classes. Two passengers sitting next to each other may have paid completely different prices even though they receive essentially the same service.

Pricing systems consider factors such as:

• How many seats remain
• How quickly the flight is selling
• Historical demand for that route
• Day and time of departure
• School and public holidays
• Competitor schedules and fares
• Business versus leisure demand
• Connecting-flight opportunities
• Passenger willingness to pay
• Fare restrictions and refundability
• Baggage and seat-selection options

When the lowest fare class sells out, the next available class becomes the displayed price. The fare can also fall again if demand is weaker than expected or another airline starts a promotion.

This is why waiting for one supposed “magic day” is less effective than tracking the route over time.

Is Tuesday Really the Cheapest Day to Book Flights?

Not consistently.

The Tuesday rule originated when airlines released sales and competitors matched them on predictable schedules. Modern systems can adjust prices at any time.

A ticket may be cheaper on Tuesday, but another route can fall in price on Friday or Sunday. The day you travel usually matters more than the day you make the purchase.

For most travellers, the better strategy is to:

1. Begin monitoring early.
2. Compare several travel dates.
3. Create price alerts.
4. Check nearby airports.
5. Understand the normal fare range.
6. Buy when the price and conditions are acceptable.

Waiting solely because Tuesday has not arrived can result in the lowest fare class selling out.

Best Time to Buy Domestic Flights

For a domestic commercial flight, begin monitoring prices approximately two to three months ahead. A practical purchase window is often three to eight weeks before departure.

Domestic prices commonly become less attractive during the final two or three weeks, particularly on routes used by business travellers. Airlines know that many passengers booking close to departure have limited flexibility.

You should book earlier when travelling during:

• School holidays
• Christmas and New Year
• Thanksgiving
• Easter
• Spring break
• Long weekends
• Major sporting events
• Large conventions
• Popular ski weekends
• Festival periods

Buying almost a year ahead is not automatically cheaper. Airlines may publish schedules before releasing their most competitive promotional fares.

Best Time to Buy International Flights

International travel normally requires a longer planning period. Begin monitoring long-haul fares five to nine months before departure and consider purchasing approximately two to six months ahead.

Book toward the earlier end of that window when:

• Travelling during peak summer
• Flying over Christmas or New Year
• Booking several seats together
• Requiring business or first class
• Using a route with limited nonstop service
• Travelling to a major global event
• Visiting a destination with seasonal air service
• Combining several airlines or destinations

A solo traveller with flexible dates may find an international deal closer to departure. A family needing five seats on the same flight has much less room to wait.

Europe

For European summer travel, start monitoring during the preceding autumn or winter. May, September and October frequently offer a good balance of airfare, weather and hotel availability.

Demand can be particularly strong around London, Paris, Rome, the Mediterranean and major European events. Travellers comparing premium commercial cabins with private aviation can review JetFinder’s destination guides for London private jet charter, Paris, Geneva, Milan and other European markets.

North America

Domestic flights in the United States and Canada often offer the widest choice three to eight weeks before departure, outside holidays. Transcontinental routes and flights to Florida, Hawaii, ski destinations or major events should be monitored earlier.

JetFinder provides charter information for destinations such as New York, Toronto, Los Angeles and Miami.

Caribbean and Mexico

One to four months may be sufficient during ordinary periods, but winter demand from the United States, Canada and Europe can push prices higher much earlier.

Book farther ahead for Christmas, New Year, Presidents’ Day, spring break and Easter.

Middle East

Travel to Dubai, Doha, Riyadh and other Middle Eastern hubs can be influenced by business events, religious holidays, winter tourism and connecting demand.

Flights around Eid, major conferences and New Year should be booked earlier. Travellers requiring flexible schedules can compare commercial service with Dubai private jet charter and regional routes such as Dubai to Doha.

Asia

Flights to East and Southeast Asia often benefit from planning several months ahead, particularly during Lunar New Year, cherry blossom season, Golden Week and major regional holidays.

Routes with numerous competing airlines may offer more opportunities for fare changes than destinations served by only one or two carriers.

Australia and New Zealand

Long distances and limited alternatives make early monitoring important. Begin searching six to nine months before major holiday travel, particularly for December and January departures.

Domestic Australian airfare can also rise quickly around school holidays, sporting events and long weekends.

Africa

Booking conditions vary widely. Large hubs may have several competing airlines, while regional destinations may have limited frequencies and expensive connections.

For complex itineraries involving safari destinations, remote airports or multiple countries, schedule suitability may be more important than waiting for a marginal fare reduction.

Tuesday and Wednesday departures are often less expensive than peak Friday and Sunday travel, but this is not universal.

Weekly demand commonly follows these patterns:

• Business routes can be expensive Monday morning and Thursday evening.
• Leisure routes often peak Friday afternoon and Sunday.
• Saturday may be attractive on business-oriented routes.
• Holiday routes follow school calendars rather than normal weekly patterns.
• International pricing depends on operating frequency and local travel habits.

Compare at least three days before and after the preferred date. Moving a departure by 24 hours can save more than waiting for a particular day to purchase.

Flights departing very early in the morning, late at night or during inconvenient hours can cost less than popular daytime departures.

However, compare the complete trip cost. A 5:30 a.m. flight may require:

• An airport hotel
• A more expensive taxi
• Additional parking
• Leaving home during the night
• A longer wait after arrival

The lowest airfare is not always the lowest total journey cost.

There is no universal cheapest month because destinations have different peak seasons. Lower fares are frequently available during shoulder periods such as:

• Mid-January through February, excluding ski and holiday peaks
• Late April and May on selected routes
• Late August through October
• Early December before Christmas demand begins

The destination matters more than the calendar alone. September can be excellent for Europe, while another market may be experiencing a major conference, festival or school holiday.

Many airlines publish schedules approximately 11 to 12 months before departure, although the timing varies.

Being first to book does not guarantee the lowest price. An early purchase makes sense when:

• Availability matters more than price
• You require multiple premium-cabin seats
• The route operates only a few times per week
• You are travelling during a major event
• Hotels and other arrangements depend on the flight
• Award seats are available at an attractive rate

For an ordinary trip, monitoring first and purchasing within the appropriate booking window may provide better value.

The U.S. airfare market has numerous airlines, airports and online travel agencies. No single platform consistently shows every available option, so American travellers should compare at least two tools and then check the operating airline directly.

Google Flights

Google Flights is the best starting point for most U.S. airfare searches. It offers:

• Flexible-date calendars
• Price-history insights
• Fare alerts
• Nearby-airport searches
• Multiple departure and arrival airports
• Baggage filters
• Airline and alliance filters
• Nonstop and connecting options
• Separate-ticket suggestions
• Carbon-emissions comparisons

For example, a New York search can include JFK, LaGuardia, Newark, Westchester and Long Island. A South Florida search can compare Miami, Fort Lauderdale and West Palm Beach.

Google Flights usually redirects passengers to an airline or travel agency to complete the purchase.

KAYAK

KAYAK compares fares from hundreds of airlines and booking websites. It is particularly useful for:

• Flexible dates
• Nearby airports
• Fare forecasts
• Price alerts
• Multi-city itineraries
• Baggage comparisons
• Separate one-way tickets
• Exploring destinations by budget

KAYAK can reveal multiple sellers for the same flight, but travellers should compare the conditions attached to each seller.

Skyscanner

Skyscanner works well for travellers who have flexible dates or destinations. Its whole-month calendar and “Everywhere” search can reveal inexpensive trips from a selected U.S. airport.

Some results may come from lesser-known online travel agencies. Check reviews, change policies and customer-service arrangements before booking.

Momondo

Momondo is useful as a secondary search after Google Flights or KAYAK. It can uncover alternative combinations and smaller travel agencies that may not appear prominently elsewhere.

Expedia

Expedia Flights is particularly relevant when airfare is combined with a hotel, rental car or complete vacation package. Package pricing may reduce the overall trip cost even if the flight alone is not the cheapest displayed fare.

Priceline

Priceline compares airline fares and may provide package savings when flights are booked with accommodation or rental vehicles.

Hopper

Hopper provides app-based price tracking and “wait” or “book now” predictions based on historical data. These predictions can be useful, but they cannot guarantee that a particular flight will become cheaper.

Going

Going focuses on flight-deal alerts from U.S. airports. It is most useful for travellers who are flexible about the destination and want notifications when unusually low fares appear.

ITA Matrix

ITA Matrix provides advanced controls for dates, fare classes, airlines, connections and routing. It is primarily a research tool and does not function like a conventional booking website.

FlightConnections

FlightConnections helps identify which airlines operate nonstop routes between particular airports. It is useful for understanding available service before beginning a price comparison.

After finding an itinerary through an aggregator, compare it with the operating airline:

• American Airlines
• Delta Air Lines
• United Airlines
• Southwest Airlines
• Alaska Airlines
• JetBlue
• Spirit Airlines
• Frontier Airlines
• Allegiant Air
• Breeze Airways
• Avelo Airlines
• Sun Country Airlines

Southwest is especially important to check directly because its fares may not appear consistently across every third-party comparison platform.

Aggregators are excellent research tools, but booking directly with the airline can make cancellations, schedule changes and irregular operations easier to manage.

A practical process is:

1. Search on Google Flights.
2. Compare the dates on KAYAK, Skyscanner or Momondo.
3. Check nearby airports.
4. Include baggage and seat-selection costs.
5. Open the operating airline’s website.
6. Compare the complete price and conditions.
7. Book directly unless a third-party offer provides a meaningful advantage.

If an airline cancels or changes a ticket purchased through an online travel agency, it may require the passenger to contact that agency instead of handling the change directly.

Airport flexibility can generate greater savings than changing the day of purchase.

Always include ground transportation, parking, tolls and travel time. Saving $80 on airfare may not help if the alternative airport requires a costly two-hour transfer.

Routes with several competing airlines can offer more opportunities for fare reductions. Examples include:

• New York–Miami
• New York–Los Angeles
• Los Angeles–Las Vegas
• Los Angeles–San Francisco
• Boston–New York
• New York–Chicago
• Dallas–Houston
• Washington–New York
• Denver–Los Angeles
• New York–Tampa
• New York–West Palm Beach

For comparison with private aviation, JetFinder provides route-level pricing for:

• Boston to New York
• Los Angeles to New York
• Denver to Los Angeles
• New York to Las Vegas
• New York to Tampa
• Dallas to Los Angeles

Travellers outside the United States can also use:

• Google Flights for global schedules and price tracking
• Skyscanner for international and low-cost airline comparisons
• KAYAK for broad market comparisons
• Momondo for alternative agencies and fare combinations
• Expedia for flight and hotel packages
• Kiwi.com for unconventional self-transfer combinations
• Trip.com for extensive Asia-focused inventory
• Wego for Middle Eastern and Asian markets
• Traveloka for Southeast Asian travel
• eDreams for European comparisons

Travellers should still check the operating airline directly before purchasing.

Be Careful With Self-Transfer Itineraries

Some aggregators combine flights from airlines without formal ticketing or baggage agreements. These itineraries can be inexpensive but carry additional risk.

Before booking, confirm:

• Whether baggage must be collected and rechecked
• Whether a transit visa is required
• Whether immigration must be cleared
• Whether the connection uses different airports
• Whether the second airline will help if the first flight is delayed
• Whether there is enough time for security and border controls
• Whether the itinerary includes separate booking references

A protected connection on one ticket may be worth paying more for.

Compare the Complete Ticket Price

The cheapest headline fare is not always the cheapest journey. Include:

• Carry-on baggage
• Checked baggage
• Seat selection
• Meals
• Change conditions
• Cancellation restrictions
• Airport transfers
• Overnight hotels
• Transit visas
• Currency-conversion charges
• Credit-card or agency fees
• The cost of long layovers

Low-cost airlines can still provide excellent value, but only after all mandatory extras are included.

Can You Save Money by Booking Separate One-Way Flights?

Sometimes. Compare:

• A conventional round trip
• Two one-way tickets on the same airline
• One-way tickets on different airlines
• An open-jaw itinerary
• A multi-city itinerary

An open-jaw trip—such as flying into London and returning from Paris—can eliminate unnecessary backtracking. However, separate tickets can create additional risk if one flight affects another.

Should You Rebook If the Price Falls?

Some airlines allow eligible tickets to be changed without a traditional change fee, but the rules vary by country, airline and fare type.

If the fare drops after purchase:

1. Check whether the original ticket is changeable.
2. Confirm whether cancellation produces cash, credit or nothing.
3. Compare the new fare with any fare difference or agency charge.
4. Check the expiration rules for travel credits.
5. Avoid cancelling until the replacement is confirmed.

Basic economy and promotional international tickets are usually more restrictive.

Private jet pricing does not follow airline fare classes. A charter quote is calculated for an entire aircraft mission.

For an ordinary domestic or regional private flight, requesting options one to three weeks ahead usually provides a reasonable balance between aircraft choice and current market availability.

For an international charter, start approximately two to four weeks ahead, particularly when permits, slots, visas or long-range aircraft are required.

JetFinder’s guide to how far in advance to book a private jet explains why earlier booking improves choice without automatically guaranteeing the lowest price.

Why Private Jet Prices Change

A private jet quote may include:

• Aircraft flight time
• Aircraft positioning
• Crew expenses
• Fuel
• Landing fees
• Ground handling
• Navigation charges
• International permits
• Airport slots
• Crew accommodation
• Daily flight minimums
• Taxes
• De-icing
• Catering
• Wi-Fi and special services

Two identical aircraft can produce different quotes for the same route because one is already at the departure airport while the other must fly in empty.

Use the JetFinder private jet cost estimator for an initial calculation and the flight time and distance calculator to estimate route length and aircraft requirements.

Is It Cheaper to Book a Private Jet Early?

Not always.

Booking early normally provides:

• More aircraft options
• Better access to locally based aircraft
• More time to compare operators
• Greater schedule certainty
• Additional time for permits and slots
• Easier coordination of special requests

However, another aircraft may become available closer to departure and reduce positioning costs. Waiting can also have the opposite result, leaving only larger or more distant aircraft.

The best approach is to request the charter early enough to understand the market, while allowing the broker to compare live aircraft location and total mission cost.

When Can a Last-Minute Private Jet Be Cheaper?

A last-minute charter can be competitively priced when an aircraft is already nearby or needs to reposition in the passenger’s direction.

For example:

1. An aircraft flies paying passengers from New York to Miami.
2. Its next confirmed trip departs from New York.
3. It must return to New York without passengers.
4. The operator offers the return sector as an empty leg.

If the route and schedule match, that flight may be offered below the price of creating a new charter mission.

Read JetFinder’s explanation of empty-leg flights and review available empty-leg opportunities.

Are Empty Legs Always the Cheapest Private Flights?

Empty legs may offer substantial savings, but they have limitations:

• Departure times may be fixed
• The route may not match exactly
• Availability frequently appears close to departure
• The flight may depend on another passenger’s schedule
• A return sector may not be available
• Aircraft substitutions can be limited
• A schedule change can eliminate the opportunity

They work best for passengers with flexible dates, airports and departure times. They should not be relied upon for a fixed wedding, board meeting, medical appointment or international connection.

Be flexible by a day or two

Moving away from a Friday evening, Sunday afternoon or major holiday can improve availability.

Compare nearby airports

Private aircraft can use thousands of airports that scheduled airlines do not serve. An alternative airport may reduce positioning, congestion, ground transfers and operating fees.

Choose the smallest suitable aircraft

Do not reserve a heavy jet if a light or midsize aircraft can safely complete the trip with the required passengers and baggage. Compare options through the JetFinder private jet fleet.

Provide accurate passenger and baggage details

Golf clubs, skis, strollers, equipment cases and oversized luggage can make an otherwise suitable aircraft impractical.

Compare complete charter prices

Confirm whether the quotation includes taxes, positioning, de-icing, catering, Wi-Fi, international handling and other potential charges.

Compare one-way and round-trip economics

Keeping the same aircraft and crew can make sense for a short stay. For longer trips, releasing the aircraft and arranging two one-way movements may cost less.

Consider membership for recurring travel

Frequent travellers can explore JetFinder private jet membership for recurring charter support and streamlined trip planning.

A private jet will rarely cost less than one economy ticket. The comparison becomes more relevant when a group is travelling or when the commercial itinerary creates significant indirect expenses.

Private aviation may provide better overall value when:

• Several passengers are travelling together
• Premium commercial fares are unusually high
• No nonstop commercial flight exists
• The airline itinerary requires an overnight hotel
• Several destinations must be visited in one day
• The group has extensive luggage or equipment
• Pets must remain in the cabin
• Privacy and security are important
• A delay could cause a substantial commercial loss
• The destination is closer to a private aviation airport

The United States is particularly suitable for this comparison because private aircraft can access numerous regional and general-aviation airports.

Review popular private jet routes or explore private charter options to New York, Miami, Los Angeles, London, Dubai and other international destinations.

“Tuesday is always the cheapest day to book”

False. Airfares can change throughout the week. Booking windows, travel dates and route demand are more important.

“Incognito mode guarantees a lower price”

There is no dependable evidence that private browsing systematically produces cheaper airline tickets. Apparent changes are more commonly caused by updated fare inventory, currency, location or search conditions.

“Booking as early as possible is always cheapest”

Not necessarily. Schedules can open before the most competitive fare classes appear.

“Last-minute airline tickets are always discounted”

Last-minute commercial fares are frequently expensive because airlines expect urgent and business travellers to pay more.

“Private jets are always cheaper at the last minute”

A last-minute empty leg can be discounted, but a newly arranged bespoke charter may become more expensive when aircraft availability is limited.

“The lowest hourly rate means the cheapest charter”

Not necessarily. Positioning, airport fees, flight minimums and other mission costs can outweigh a lower hourly rate.

How far ahead should I buy a domestic flight?

Begin monitoring approximately two to three months ahead. For an ordinary trip, three to eight weeks before departure is a practical purchase range.

How far ahead should I buy an international flight?

Begin monitoring five to nine months ahead and consider purchasing two to six months before departure. Book earlier for peak periods.

Is Sunday the cheapest day to buy flights?

Some airfare studies have reported modest Sunday savings, but there is no universal cheapest purchase day across all routes and countries.

Are flights cheaper after midnight?

Not consistently. Airlines can update inventory and pricing at any time.

Is it better to book directly with the airline?

Direct booking can simplify changes, cancellations and disruption handling. A third-party agency may still be worthwhile when it provides a meaningful price or package advantage.

Should I use more than one flight aggregator?

Yes. Compare at least two platforms because airline coverage, travel-agency partners and displayed combinations can differ.

How far ahead should I book a private jet?

For a routine charter, approximately one to three weeks is a useful starting point. International, holiday and major-event trips should be planned earlier.

Can JetFinder arrange a same-day private flight?

Potentially. Same-day availability depends on aircraft location, crew, airport hours, payment, documentation and regulatory requirements.

What is the cheapest way to charter a private jet?

The best conventional price often comes from using the smallest suitable aircraft already located near the departure airport. Empty legs may cost less but offer less flexibility.

Can private jet charter be paid with cryptocurrency?

Yes. JetFinder accepts selected digital currencies. Learn more about booking a private jet with cryptocurrency

There is no single cheapest day or hour to buy flights.

For domestic commercial travel, begin monitoring two to three months ahead and consider purchasing approximately three to eight weeks before departure. For international travel, start earlier and aim for roughly two to six months before departure.

American travellers should begin with Google Flights, compare KAYAK, Skyscanner or Momondo and then check the operating airline directly. Southwest and selected low-cost carriers deserve a separate direct search.

Private jet pricing follows a different model. The best value comes from selecting the right aircraft in the right location, not waiting for a particular booking day. For a routine charter, one to three weeks often provides a reasonable balance. Peak events and holidays require earlier booking, while flexible travellers may benefit from a last-minute empty leg.

Use the private jet charter cost estimator, explore popular private jet routes or request a private jet quote to compare available aircraft.