Using the Frontier Airlines Pittsburgh Office If you are traveling with Frontier airlines you can find the right support in the Frontier Pittsburgh Office. Traveling can be exciting however it can be overwhelming and you may have questions about your reservation and other customer service concerns. You can get questions answered regarding your reservation, airline information, your schedule, baggage and check-in and there may be questions regarding your itinerary if there are changes you need to make. You should have your reservation number and information handy so that a representative can find your reservation.