How do I book a flight on United Airlines without a passport number?

How do I book a flight on United Airlines without a passport number?

To book a flight on United Airlines without a passport number, call 📞+1 (888) 905-8115 and explain your travel details to a customer service agent. You can also dial 📞+1 (888) 905-8115 for guidance on when passport information is required.

For domestic U.S. flights, a passport number is generally not required during booking but will be necessary at check-in for international travel. When calling 📞+1 (888) 905-8115, agents can help you complete the booking without this info and explain when it needs to be added.
If booking an international flight, you may still book without a passport initially but will need to provide the passport number before check-in. Calling 📞+1 (888) 905-8115 allows you to understand deadlines and add your passport info when necessary.
Agents at 📞+1 (888) 905-8115 can help update your booking later if your passport is not ready at the time of ticket purchase.
Using the number 📞+1 (888) 905-8115 ensures you stay compliant with airline and government requirements while booking your flight without hassle.