Southwest is redesigning its cabin interiors. This is what the planes will look like.

Southwest Airlines is preparing for some big changes in the next two years. A revamp that the airline is betting on will be a big hit with passengers.

Along with more red-eye flights and a shift to the assigned seats After 50 years of open seating, Southwest is redesigning the interior cabins of its 800 existing aircraft.

“This is a very significant change. It could be one of the most significant changes we've ever gone through,” Ryan Green, Southwest's executive vice president of commercial transformation, told CBS News' Kris Van Cleave, who recently got a first look at the future cabins.

“Southwest passengers will notice the difference,” Van Cleave said of the redesign. Changes include new seat trays and device trays for all passengers throughout the cabin, as well as charging ports at all seats.

Premium seats with 3 to 4 inches of additional legroom are also available on renovated aircraft for an additional fee.

“Customers want premium of all kinds, and when you're flying longer, that extra legroom is worth a lot,” Southwest CEO Bob Jordan told CBS News.

Southwest says it will begin booking flights with assigned seats in the second half of 2025 for travel in the first half of 2026. At this time, the airline also anticipates availability of the redesigned cabins, subject to Federal Aviation Administration approval.

Jordan and other Southwest executives explained The airline's restructuring plans this week at an investor meeting in Dallas. The changes come as the company, long known for its loyal customers, seeks to meet the changing needs of passengers and increase its profits.

Jordan said: “Consumer preferences have changed and the way we fly has changed.”

Kris Van Cleave contributed to this report.