Southwest Airlines became the US's largest domestic carrier by offering free bags and open seats — now it's upending one of its most well-known perks

Tech Insider : Travel
Southwest Airlines flight attendants
Southwest Airlines flight attendants in an undated historic picture.

Southwest Airlines

I flew United's basic economy. The fare is restrictive, but I'd book again if the price were right.

Tech Insider : Travel, Travel
The United Next cabin with a flight attendant in the aisle serving drinks.
The "United Next" cabin on a Boeing 737 Max 8 in full view.

Taylor Rains/Business Insider

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