Best Time To Book International Flights 2025. Generally, the best time to book a domestic flight is between one to three months before departure. Passenger numbers are forecast to reach 5.2 billion in 2025, a 6.7% rise compared to 2024 and the first time that the number of passengers has exceeded the five billion mark.

This year, the best time to buy an international plane ticket is between one month to six months before departure for europe, one month to five months before departure for the. Our tool shows travellers the average monthly price and the best time to book for some of the most popular destinations from the uk as well as offering even cheaper alternatives that you (and your wallet) will love.