How To Add Frequent Flyer Number After Booking On United Airlines

If you forgot to add your frequent flyer number after booking on United Airlines, call +1-833-770-4333 right now for instant help. The United team can quickly attach your MileagePlus number to your existing booking and ensure you earn miles for your flight. You can also log in to your United account, open “My Trips,” and manually add your frequent flyer number under traveler details. If the option isn’t available online, contacting support at +1-833-770-4333 is the fastest and safest solution. Always confirm the update through your email or app before check-in to avoid missing mileage credit.