How far in advance should I book a flight to get the best deal?

When to Book Flights for Domestic Travel. According to a 2022 study by CheapAir.com, on average, the best time to purchase plane tickets for a domestic trip is about 76 days before your departure date. Keep in mind that this is an average — it doesn't mean you should log on exactly 76 days before travel.



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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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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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Book airfare on Sunday. Data shows that, at least a good part of the time, booking airfare on Sunday is cheaper than other days of the week. If you have the option to shop for travel at any time, waiting until Sunday could yield 5 percent to 15 percent in savings.

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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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More specifically, Tuesday at about 15:00 eastern time. This is because many airlines release weekly sales early on Tuesday, which creates competition between airlines to match prices.

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In the early days of online flight booking, airlines used to manually post their updated prices at a certain time of day each week. This led to the rise of the myth that the cheapest time to book a flight was on Tuesday (and specifically at 3am, many claimed).

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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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Early to midweek tends to be cheaper on off-peak days, and as a rule of thumb, the busier the weekend, the more the flight is going to cost. “I've found that it is generally cheaper to fly on Tuesdays, Wednesdays and Saturdays,” adds Dengler.

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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. At the other end of the spectrum, December and July are the first and second most expensive months to travel, on average.

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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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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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The reality is that flight prices change constantly and at all hours of the day, adjusting to real-time demand. Airlines don't restock on the same day every week like a grocery store, so you won't find deals by waiting until Tuesdays to book.

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A well-worn travel legend says that Tuesday is the best (and cheapest) day to book your flight. However, here in the UK at least, it would seem that the myth is exactly that – just a myth. Holiday booking site Opodo says that Sunday is the cheapest day for buying a plane ticket.

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Low-Cost Airlines in the US: The Cheapest and Best Airlines to Fly Domestic
  1. Southwest Airlines. Southwest Airlines is one of the largest budget carriers in the world. ...
  2. JetBlue. ...
  3. Spirit. ...
  4. Breeze Airways. ...
  5. Hawaiian Airlines. ...
  6. Avelo Airlines. ...
  7. Delta Air Lines. ...
  8. Alaska Airlines.


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The process is largely controlled by computer software and is increasingly being bolstered by AI, so price changes can happen at any second. That's why there's no specific time of day — or even a specific day of the week, for that matter — that's best for booking cheap flights.

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Consequently, airlines have fewer seats left on their flights, so they're more likely to increase the prices as more people are interested in booking. Keyes recommended flying with a budget airline such as Frontier or Spirit to avoid overpaying for tickets to leisure destinations at the last minute.

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December is the most expensive month during which to catch a flight.

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