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By entering your SkyMiles, confirmation or eTicket number, you can check in for your flight, print your boarding pass, add any checked bags, make a change to your seat, complete a service request and add your frequent flyer number to your profile – all from the touch of your finger.
Check in to your Southwest Airlines flight online or with our mobile app. Find information about your upcoming flight reservation here.
Check in beginning 24 hours and up to 45 minutes before your flight (90 minutes for international).
For most flights, you can check in on the Frontier app starting 24 hours before your flight's scheduled departure time. You must have your boarding pass and have any bags checked in by the below cutoff times before departure: 60 minutes (domestic flights) 60 minutes (international flights)
Save some time and check in for your flight online! Find the information you need on how to complete online check in, locate your confirmation number, and more.
Check in for your United or United Express-operated flight, depending on where you are in your travel experience.
Mandatory web check-in to minimize contact while traveling and avoid long queues at the airport. Web check-in for free 48 hours to 60 minutes before flight.