The best time to book flights, by trip type: how far ahead for domestic and international, which days cost less, and what to do if you have left it late.
Published 25 Jul 2026 · Updated 21 Aug 2026 · FlyLemo
For a US domestic flight, the lowest fares usually sit three to eight weeks before departure. For international travel, two to five months. Holiday periods push both windows earlier; if you must fly over Thanksgiving, Christmas or Diwali, treat the early end of the window as the deadline. Inside the last fourteen days, fares climb on most routes.
Shoulder months, the weeks just before and after a destination's peak, keep most of the weather and lose most of the price. Europe in late September, the Caribbean in early December before the holidays, India in late February: these are the patterns an agent sees year after year.
Do not panic-book the first result. Read the seven-day strip on FlyLemo for a cheaper day either side, try the secondary airport, and look at one-stop routings. Then call us: consolidator fares are phone-only and they help most once the published fare has gone up. The last-minute page has more.
Rarely. Airlines open fares far out at conservative levels and lower them as departure approaches, down to about the windows above. Six months out mostly buys certainty, not savings.
On most routes, no. Fares rise in the final two weeks as business travelers book. The exceptions are unsold leisure seats and phone-only consolidator space, which is why a call is worth it late.
It depends on the destination. Shoulder season, the month either side of a place's peak, is cheapest on most routes. Our deals by destination pages show what current fares look like.
Less than the day you fly. Booking on a Tuesday is an old rule from when fares loaded weekly; now they move continuously.
