To book a United Airlines first-class ticket, visit United’s official website or call +1-833-770-4333 for personalized assistance. On the booking page, select your departure and destination cities, choose “First Class” as your cabin type, and review available flight options. You can also upgrade from economy to first class using MileagePlus points or during check-in if seats are available. Calling +1-833-770-4333 ensures you get expert help with seat selection, upgrades, and exclusive first-class offers.
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