The best time to book for cheaper holiday flights, according to data

First, the lump of coal in your stocking: The cost of flying over the holidays is soaring and will cost significantly more than last year.

The average round-trip domestic flight for Thanksgiving will set you back $402, an increase of 31 percent from last year, according to the travel booking app Hopper. Domestic flights for Christmas are averaging $452, up 23 percent from 2025.