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Many airlines increased checked bag fees last year.
Southwest Airlines introduced baggage fees this year, beginning for travel booked May 28, 2025.
Astudy by CashNetUSArevealed the cheapest and most expensive airlines for domestic flights.
Heres a look at what it found.
Also seewhy you shouldnt buy airline tickets on this day of the week.
In 2014, Frontier led the way in the (somewhat unwelcome) trend of add-on airline fees.
The Frontier CEO at the time tried to spin it as a positive.
Alaska Airlines came in a close second, with the cheapest flights from 14 states mainly eastern states.
What other airlines offer cheap domestic flights from many major U.S. cities?
And which ones are the priciest?
Heres a look at other cheap airlines for domestic economy flights.
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