I could go on and on, but the points above are the biggest red flags and disappointments.
    I flew Frontier for the first and last time this past week. I had a business trip and this was the most cost effective airline for me. Then I found a few - no, a lot of negatives.
    Full Fright
    First, my luggage is a rolling carry on that is the appropriate size and fits in any other airline. Frontier forces you to stick it in a sized up box at the counter to be approved to get the carry on onto the flight, and that is for each connecting flight. It's difficult to fit in and I noticed a few people who were charged $50 per bag to have it checked because it did not fit. I lucked out, but had to go through the ordeal all over again at my connecting flight in Denver and was told my bag would not fit when it did just a few hours earlier. On my 1st flight, the passenger in front was in a broken seat and the stewardess continued to scold him to pull his seat forward for landing/takeoff, when he repeatedly explained to her, they finally comprehended to get a maintenance person on the flight who did not even fix the seat. Each flight was worse than the previous.
Frontier Failures
 They don't get anything right. 


 The worst airline I've flown. 


 Depending on which rules they choose to enforce, you can never be assured that you will be granted access to their boarding process. 


 I have never had a more infuriating, more frustrating, or more demoralizing experience traveling in my life! 


 Traveling Frontier has been one of the worst experiences I have ever had. Rude, disrespectful and completely unhelpful. I would highly discourage traveling with them