How far in advance do I need to buy plane tickets?

How far in advance should you book a flight to get the best deal? The best time to book a flight is one to three months before your departure for domestic airline tickets and two to eight months prior for international flights. “We call these the 'Goldilocks windows,'” Scott Keyes, founder of Going.com, tells AFAR.



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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. Prices can also vary widely among airlines.

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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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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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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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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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Is there a cheapest month to fly? If you're looking for a bargain month to travel, February is your best bet. Flights in January closely follow February for being most affordable.

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Domestic airline prices are on the decline in 2023, finally retreating after spiking just a year ago. International fares are still high. After soaring in 2022, prices for domestic airline tickets are on the descent.

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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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Flights typically open for booking 331 days in advance, and from then until about 21 days before departure, the price is the least expensive you'll find — after which they raise ticket prices at 14 days, and again at seven days. Research shows that the sweet spot for finding low fares is 44 days before your flight.

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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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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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Bottom line. Surprisingly, there is very little evidence that online travel sites are raising prices the more that you search for a specific trip. In fact, they tend to show lower prices to logged-in users.

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


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According to a recent study by Expedia, the cheapest day to book flights is Sunday. When comparing Sunday flight prices to Friday, Expedia found that travelers save 5% on domestic flights and 15% on international flights. For the past four years, Sunday has been the best day of the week to book flights.

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At midnight, fewer people travel and there is low last-minute reservation so to fill them, they release multiple offers. With these discounts, you can set aside some amount.

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Tuesdays may not be favorable for booking, but if you're hoping to score major savings, booking your departure on a Tuesday or Wednesday is a surefire way to do so. Mid-week flights offer the best deal prices in comparison to flights departing the rest of the week.

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