(NewsNation) — Passengers flying with Southwest Airlines will be assigned seats starting Jan. 27.

The airline’s iconic open seating policy is coming to a close, along with its offer of two free checked bags, after more than 50 years. Additionally, Southwest has introduced new fare types and benefit changes.

The changes come amid efforts to increase revenue and remain competitive with rival airlines.

Top-tier customers will remain unaffected by most of the new fees and restrictions.

The policy changes will introduce a more traditional boarding process, in which passengers will be grouped according to the location of their seats and priority status.

Tickets for flights with assigned seating will be available starting July 29.