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Best Time to Book for Domestic Flights
For domestic routes, United opens booking 331 days in advance.



Best Time to Book for International Flights
International routes require more lead time.



Avoid Booking Too Early
Booking more than 6–10 months in advance may not save money.



When Is the Cheapest Day to Book?
Tuesday or Wednesday mornings are often best for deals.



What Time of Day to Book?
Flights booked at midnight or early morning are often cheaper.



Book Holiday Travel Even Earlier
Thanksgiving, Christmas, and summer holidays fill up fast.



MileagePlus Members May Book Earlier
United’s MileagePlus loyalty program offers early booking perks.



How to Set Fare Alerts
Use United’s fare alerts or third-party apps like Hopper.



Booking Last-Minute? What You Should Know
Last-minute fares (0–7 days out) are usually higher.



Final Tip: Use Flexible Date Search
Search flexible dates to compare several days at once.


