Cheapest Day to Fly — How to Find the Lowest Flight Prices in 2026

Airlines change their prices over 100 times per day using dynamic pricing algorithms. But there are clear patterns — and knowing them can save you 20–40% on every flight you book. This guide breaks down exactly which days are cheapest to fly, which days to book, and the specific time windows where prices drop.

Cheapest Days to Fly (2026 Data)

Based on analysis of over 50 million flight searches, here is exactly how each day of the week ranks for domestic and international fares:

Best Time to Book — How Far in Advance?

Best Time of Day to Search and Book

Airlines typically release new fares and sales at specific times. The best windows to search for cheap flights are:

• Tuesday 1am–3am — Airlines release weekend sales at midnight, prices drop
• Wednesday morning — Competing airlines match Tuesday's deals
• Early morning any day (5am–7am) — Least competition from other buyers, algorithms haven't caught up yet

Always search in incognito/private mode. Flight booking sites track your searches and raise prices when you return to the same search. Private mode removes this tracking.

Cheapest Months to Fly (by Destination)

9 Proven Hacks to Get the Cheapest Flights

• ✅ Use incognito mode — stops price tracking by booking sites
• ✅ Search nearby airports — sometimes a 30-minute drive saves £150
• ✅ Be flexible by 1–2 days — shifting departure by 48 hours often saves 20%
• ✅ Book connecting flights separately — sometimes cheaper than direct
• ✅ Use GoSailor to compare — we search 100+ airlines simultaneously
• ✅ Set price alerts — get notified when prices drop on your route
• ✅ Check budget airline websites directly — Ryanair, easyJet, IndiGo don't always appear on aggregators
• ✅ Fly into secondary airports — Stansted vs Heathrow, Bergamo vs Milan
• ✅ Book early morning or late night flights — 20–30% cheaper than midday