Under pressure to boost revenue, JetBlue will charge bag fees for customers in cheapest seats

It will soon cost you money to check a bag on JetBlue if you buy the cheapest level of tickets.

JetBlue Airways Corp. said Wednesday that it will create three ticket classes, and only the top two include at least one free checked bag. The company didn't say what the bag fee would be for the cheapest flights.

JetBlue expects the change will generate more than $200 million in operating revenue, according to a slide prepared for a meeting with investors in New York.

Other big airlines have added fees on checked bags since 2008. JetBlue's move will leave Southwest as the only large U.S. airline that allows all passengers to check at least one bag for free.

New York-based JetBlue has been under pressure from investors to boost revenue.