America's 4 biggest airlines are all hiking checked bag fees. See which carriers are increasing prices.

Southwest Airlines is raising baggage fees less than a year after ending its longtime “bags fly free” policy.

The airline’s “Optional Travel Charges” page states that for mainland US travel, checked bag fees will increase by $10 for all tickets booked on or after April 9. The cost of checking the first bag will increase by about 28% to $45, while the second checked bag will cost $55.

For non-Hawaii residents, interisland travel will also come with a baggage price hike for tickets purchased on or after April 9: $30 for the first checked bag, $40 for the second.

According to the price chart Southwest published, different levels of Rapid Rewards members will maintain their original benefits without paying extra.

“As part of an ongoing analysis of the business and against the evolving global backdrop, Southwest Airlines is increasing its fees on first and second checked bags by $10, effective on all reservations ticketed or voluntarily changed on or after April 9, 2026,” the airline said in a statement to CNBC.

Southwest did not immediately respond to a request for comment.