Five Fare Calendar Tricks That Actually Work in 2026
There is a lot of folklore around flight deals. Most of it is folklore because the airline pricing algorithms that produced those tricks in 2019 no longer behave the same way in 2026.
1. The Tuesday-afternoon myth, retired
The classic "buy on Tuesday at 3pm" advice came from a 2014 study that no longer reproduces. What does work: search on Saturday, book on Tuesday morning. Airlines file their weekend fare changes on Monday; by Tuesday morning the new pricing has stabilized and inventory is still fresh.
2. The 6-week window for long-haul
For intercontinental flights, the lowest fares cluster around 6 to 8 weeks before departure. Inside that window, fares rise an average of 11% per week. Outside it (12+ weeks out), airlines are still pricing off their yield-management heuristics and the deals haven't materialized yet.
For short-haul, the window narrows to 3 to 5 weeks.
3. The 24-hour hold
Every major US and EU carrier offers a free 24-hour hold on bookings. Use it deliberately: hold on Tuesday, search again on Wednesday. If the fare dropped, rebook. If it didn't, confirm the held reservation.
4. Mixed-carrier round trips
A surprising number of round-trip fares are cheaper when you fly outbound on airline A and return on airline B. We surface these as "mixed carrier" results in the flight search. About 18% of bookings in 2025 took advantage of this.
5. Open-jaw vs. round-trip
For multi-city trips, an open-jaw (fly into city A, return from city B) is often cheaper than two one-ways — and sometimes cheaper than a round-trip plus a separate internal flight. Always compare the open-jaw against the round-trip before booking.
Final word
Fare calendars are useful, but the underlying algorithm has moved on. Treat these five techniques as your starting point — and use our fare-watch feature to lock in a deal when the algorithm blinks.
Written by
Marcus Reinhold
Chief Technology Officer