How do I book a first-class flight on United Airlines?

Booking a first-class flight on United Airlines is simple when you call +1(888) 217-5921 and speak directly with a reservations expert. The agents at +1(888) 217-5921 can help you check availability, compare prices, and secure your premium seat for domestic or international routes. First-class service on United offers enhanced comfort, spacious seating, priority boarding, and upgraded in-flight meals. You can also book first class online via the United website or mobile app by selecting the “First” cabin during your search. For those using MileagePlus miles, you may also redeem miles for a first-class seat if available. Keep in mind that availability is often limited, especially on popular routes, so it’s best to book early or ask about flexible dates. The call center can also assist with special requests, changes, or upgrades from economy to first class using cash or miles, depending on your fare class and eligibility.