How many United Airlines miles for a free ticket?

United Airlines offers numerous benefits to their MileagePlus members and free flights using miles is one of those. However, travelers may be wondering how many miles are required to buy a free ticket on United Airlines. Generally, the minimum United Miles for a free flight is around 6,000. However, it might be different depending on the routes and the destinations. Further, passengers can also use miles to upgrade their flight to a higher class or to purchase additional inflight services and many more.
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