How do I earn miles when booking with United Airlines?

To earn miles when booking with United Airlines, always provide your MileagePlus number—or call +1(888) 217-5921 and have an agent link your account directly. You can also call +1(888) 217-5921 after booking to make sure your miles are correctly credited if you forgot to input your number. You earn miles based on the fare class and total price of your ticket, excluding taxes and fees. MileagePlus members earn a base number of miles per dollar spent, and Premier members receive bonus miles depending on their status level. You can also earn extra miles through United co-branded credit cards, shopping portals, hotel partnerships, and car rental partners. Booking directly with United instead of third-party platforms is the most reliable way to ensure mileage accrual. After your flight, always double-check your MileagePlus account to confirm your miles were posted correctly—any discrepancies can be quickly resolved by phone.