How many months early should you buy plane tickets?

The best time to book a flight is generally one to two months out for domestic trips. For international flights, book six to eight months out for the best deals. However, there are many factors that can lead to an increase (or decrease) in the price of an airline ticket.



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Timing Matters: Not Too Early, Not Too Late The general rule is that for domestic flights, travelers should start searching for flight tickets one to three months in advance. For international flights, the best prices are typically available from two to eight months in advance.

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The Expedia study found that the sweet spot is 28 to 35 days before departure while the Google study found prices bottomed out 44 days before departure. However, both studies agree that you don't want to wait until the last minute. Book at least 21 days before departure.

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Generally, you should book domestic flights one to four months in advance. For international flights, you should book at least six months in advance. You'll want to give yourself more time for research for the latter than when traveling on domestic itineraries.

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Timing plays an important part. Specifically, plane tickets usually don't get cheaper closer to the departure date. Instead, flights tend to be the most inexpensive when you book between four months and three weeks before your departure date.

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Tuesdays and Wednesdays are the cheapest days to fly domestically. The cheapest days to depart if you're flying within the U.S. are midweek — generally Tuesday or Wednesday. For economy tickets, Tuesdays are about 24% lower than peak prices on Sundays, which translates to savings of about $85 per ticket.

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Generally, flights are available to book around 11 months in advance, although it will differ from airline to airline. Check out our page on how far in advance you can book flights for more information.

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Time your booking right
“For domestic flights, if you're talking peak season, it's about three to seven months in advance,” he says. “For international flights — [it's] four to 10 months.”

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Tuesday Around Midnight is the Cheapest Time to Book
In general, flights were slightly cheaper at midnight earlier in the week (Monday through Wednesday). However, this is only applicable to about 1.6% of U.S. markets, meaning that it's not likely you'll find the same savings on your specific route.

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It mostly comes down to supply and demand. Demand is contributing to higher prices as travel continues to surge post-pandemic, Berg said. Sustained strong demand in 2023 continues to put additional pressure on prices, especially to and within regions where travel has only recently reopened like parts of Asia.

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The cheapest months to travel are:
  • November – early December.
  • Late January – March.


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Remember: Don't wait too long to book your flight in hopes that fares will keep dropping. A little over a month before your trip may be the sweet spot for finding the lowest price. But if you haven't booked your flight within three weeks of your travel dates, you're most likely going to wind up paying more.

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Buying airfare at the stroke of midnight can yield a small amount of savings, say others, but it may not always be worth it to stay up late just to book a flight. Truth be told, it's extremely difficult (if not impossible) to pinpoint a universal date and time during which the cost of airfare drops.

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Crunching the data on millions of airline passengers flying on more than 200,000 daily flights reveals some interesting trends that can save you money the next time you fly. For starters: Never book your airfare on a Friday. That's when prices are at their highest.

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Generally, Tuesday, Wednesday and Saturday are the cheapest days to fly, while Fridays and Sundays are pricier, according to travel deal site FareCompare. Leisure travelers tend to fly on the weekends, either starting their vacations on Friday or taking a long weekend Friday to Sunday.

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How often do airlines update airfare information online? The airlines update fare information 3 times a day. They do not necessarily change airfare prices all three times, but they certainly can, and often do.

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You can use travel agents, the true champions of negotiations, to fetch the best deals for you. You can even try bargaining directly with the airline's representative on the toll-free number. Be patient and polite, and ask them about the possibilities of getting the flight at a lower fare.

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There's no sugarcoating it: Airfare is expensive. And while waiting until the last minute might sound like a good idea, it typically is cheaper to book your flights in advance. We are seeing fewer last-minute deals than in years past, especially when it comes to flights, a Kayak spokesperson tells Travel + Leisure.

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A new study says the cheapest domestic airfares can be booked six weeks before a flight. The typical savings is 6 percent off the overall average ticket price during the four months prior to departure.

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