Southwest Airlines' flights for the first time can be booked on Booking Holdings' online travel websites, including Priceline, Booking.com and Agoda.

Southwest Airlines has dominated the headlines in recent months thanks to the carrier's controversial decisions to start charging for checked bags and changing how its aircraft will be boarded. Starting on Jan.

The partnership gives customers access to all of Southwest's fare types, allowing travelers to earn both Rapid Rewards points and achieve Priceline VIP status.

Priceline, the OG of online travel deals, is adding even more reasons to go to your happy place with the arrival of Southwest Airlines®. Starting today, travelers can search and book Southwest's inventory directly on Priceline,

Priceline is the second online travel agency to partner with Southwest as the carrier looks to widen its distribution channels amid major shifts in its business model.

Priceline now offers Southwest Airlines flights, expanding booking options and rewards for travelers across its platforms, including Booking.com and Agoda.

Over the past few months Southwest Airlines has made two significant - and controversial - changes by ending free checked bags and revamping its boarding process. Southwest charges $35 for a first checked bag and $45 for a second checked bag.

Earlier this year, Southwest Airlines announced plans to begin charging for checked bags and move to an assigned seating model that allows customers to pay extra to select their seats, which could include premium seats with extra legroom.