Check in 24 hours in advance. You can do this by navigating to the website of your airline, and find the section of the website where you can “Check In”. Once you’ve verified all of your flight information, you’re ready to do the final check-in. Input your reservation number or flight number.How do I contact United Airlines customer service?
The customer support phone number of United Airlines is 1-800-864-8331, +1-800-241-6522 (Click phone number to call). The postal and official address, email address and phone number (helpline) of United Airlines Service Center and United Airlines customer service phone number is given below.How do I get refund from United Airlines?
In the event that you need to cancel a flight with United Airlines, you can call the customer service number and request to have a refund of the ticket. Refunds may be granted if the refund is requested within 24 hours of the purchase of the ticket.