I've been flying ultra-low-cost airlines for years and have never been charged extra — these are my 4 tips for avoiding fees

Tech Insider : Travel, Travel
Spirit Airlines bag check
Spirit and Frontier have size checks stationed at the check-in desk and boarding gates.

Eric Glenn/Shutterstock

I used to regularly fly on ultra-low-cost airlines to save money, but the cheap tickets aren't worth the headache anymore

Tech Insider : Travel
Delta A220 cabin with seatback screens.
I prefer basic economy on mainlines because they come with the cabin perks at a cheaper price.

Taylor Rains/Business Insider

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