GoKawiilGoogle Finds Optimal Booking Windows for Holiday Flights in 2026
Analyzing five years of Google Flights data, Google reports that domestic flights for Thanksgiving are cheapest when booked about 39 days prior, around October 21-23. For Christmas, the ideal booking window shifts further out to approximately 56 days before departure, roughly between October 27-29. International flights to Europe tend to be most affordable around 90 days in advance, while trips to Mexico or the Caribbean should be booked about 43 days ahead.