For the best flight prices in 2026, data suggests you should . While the "Tuesday booking" rule was once standard, recent shifts in travel patterns have made Friday the most affordable day to secure both domestic and international tickets. 📅 Best Days to Book vs. Fly

Tuesday and Wednesday remain the cheapest days to actually travel for domestic flights. For international trips, Friday has emerged as a surprisingly affordable departure day.

Friday is now the top choice, potentially saving you around 3% compared to booking on a Sunday. Some reports still show Sunday as a strong contender for international savings.

It is important to distinguish between when you buy the ticket and when you actually board the plane.