Finally, there’s a scientific answer to that magic number of days before a flight when tickets are at their cheapest:
Domestic US: 54 days before your flights
Europe: 151 days before your flight
Asia: 129 days before your flight
The Caribbean: 101 days before your flight
Mexico: 89 days before your flight
Latin America: 80 days before your flight
Fifty-four days before takeoff is, on average, when domestic airline tickets are at their absolute lowest price. And if you don’t hit 54 days on the head, you should usually book between 104 to 29 days before your trip — within the “prime booking window” — for the lowest possible prices. In this window, ticket prices typically hover within $10 of the lowest price they’ll ever reach.
The folks at CheapAir spent the last year analyzing over four million airline trips. They tracked ticket prices from 320 days before takeoff all the way up until the day before, calculating precisely which day each one hit its lowest point.
Air travelers tend to believe they’ll find the lowest of low prices when they book “at the last minute.” This, according to all present data, is one hundred percent false.The researchers found that, on average, a ticket was at its highest price on the day before the flight. The second-highest price was two days before the flight, the third-highest was three days before… and so on, all the way to 13 days before the flight.
Check out the full details and analysis here.