Frontier Airlines encourages travelers to check in online through their website or mobile app to save time at the airport. However, if you prefer to check in at the airport, Frontier’s check-in counters are located in the central section of Terminal 1's Departure Level. Be sure to arrive at least two hours prior to your flight if you're checking baggage or need to print a boarding pass.

Since Frontier is an ultra-low-cost carrier, remember that carry-ons and checked bags often come with additional fees.
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