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When to Book

When should you book your trip?
Using last year's data, we discovered how far in advance you should book your flight to save money.
Hacker Fare Savings by Weeks Before Departure

Hacker Fare Savings by Weeks Before Departure

This is how much you can expect to save by booking a Hacker Fare, based on how many weeks in advance you book your trip.
Domestic
International
From United States
You should book a flight when...
For the most part, it looks like you can save the most by booking a Hacker Fare the closer you are to your travel dates. So, if you don't have a lot of time to plan, combining 2 one-way tickets will help you cut costs when compared to finding a round-trip fare. But as we always say, if you see a good deal -- book it.
Remember: as a travel search engine, KAYAK doesn’t sell or process your tickets and reservations. We just make sure you find the travel information you need to get out there and experience your world.