Flights & Airline Tickets

When are flights cheapest to book?

Two clocks set the price of an airline ticket: how far ahead you book, and when you fly. Domestic fares tend to average their lowest price somewhere between roughly 34 and 86 days before departure, with the sweet spot around six to seven weeks out. International tickets need more runway — two to four months for transatlantic routes, three to five months for long-haul Asia and the Pacific.

Which months are cheapest to fly?

Airfare tracks the school and holiday calendar closely. January is the cheapest stretch of the year, once the December rush ends and before spring break demand builds. Late August is the second dip, after summer vacations wind down and before fall business travel picks up. June through August and the weeks around Thanksgiving and Christmas sit at the expensive end.

Why do fares move this way?

Airlines use revenue management: seats on a flight are sold in a series of price buckets, and as the cheaper buckets sell out the fare steps up to the next one. Nothing about the moment you search changes that. What changes it is how full the flight already is — which is why a peak-season ticket bought early can beat an off-peak ticket bought late.

Does the day of the week you book matter?

Less than it used to. Airlines usually load new fares and sales midweek, so a Tuesday or Wednesday search can catch a sale a day earlier than a weekend one. That is worth a few minutes, not a change of plan. The departure date moves the price far more than the booking day.

Which guide should you read next?

For the month-by-month pattern and how far ahead to book a domestic trip, start with airline ticket price seasonality. For long-haul trips, where the window opens earlier and shifts by region, see the best time to buy international flights. If the trip also includes a hotel or a package, note that hotels and travel packages run on the travel season rather than on a booking window, so the two halves of the same trip are timed differently.