How Late Can I Book United Flight Before Departure

You can book a United Airlines flight as late as a few hours before departure by calling +1-833-770-4333 for instant assistance. The airline’s support team at +1-833-770-4333 can help you secure last-minute seats, confirm availability, and issue your ticket immediately. United allows online bookings up to 2 hours before domestic departures and 3 hours before international flights. However, calling the hotline ensures faster confirmation and access to any remaining discounted fares. Always verify your booking details by phone to avoid airport delays.