Which day is cheapest to fly out?
Fly out on a Monday and you pay 10.4% less than that flight normally costs. Fly out on a Saturday and you pay 14% more. Between the best day and the worst there's 24.4%, and you don't have to change destination to get it. You just move the departure.
How much more or less than usual, day by day
A bar to the left means that day costs less than usual on that route. To the right, more.
| Day of departure | How the price shifts | Prices used |
|---|---|---|
| Monday | -10.4% | 35,971 |
| Tuesday | +9.6% | 22,433 |
| Wednesday | +5.2% | 25,755 |
| Thursday | -5.8% | 32,318 |
| Friday | -8.1% | 37,861 |
| Saturday | +14% | 42,732 |
| Sunday | -2.1% | 36,777 |
How we worked it out
We used 233,847 prices across 2,306 different routes. We kept only the routes with at least 20 prices, spread over at least 5 days of the week. That filter earns its keep: without it, the result would tell you which routes happened to be in the pile, not how much the day matters. Then we compared every price with what that same route normally costs, so an expensive route can't make the day it shows up on look expensive.
Why it happens
Fewer people travel midweek. Holidaymakers leave on Friday or Saturday, and people working move on Monday and come back on Friday. Less demand, lower prices. Moving your departure by one day is still the biggest saving there is, much bigger than hunting for the right site to book on.
Covers departures from 27/10/2026 to 31/01/2027
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Data for the press