LAS VEGAS — Allegiant Air said Wednesday that it will buy 50 Boeing 737 Max jets and take options for 50 more, giving Chicago-based Boeing a major foothold in the discount airline’s all-Airbus fleet.

Financial terms were not released. The 737 Max 7 and Max 8 models selected by Allegiant list for $99.7 million and $121.6 million apiece, but airlines routinely receive discounts.

Allegiant said it will take delivery of the planes from 2023 through 2025.

Allegiant previously used MD-80 planes from McDonnell Douglas, which Boeing bought in 1999.