However, fliers traveling on 737-700 aircraft can expect to wait a while for the extra legroom seats. Southwest noted that the retrofit process on those aircraft will start after the summer, while 800 and MAX 8 aircraft will be the first in Southwest's fleet with the update.

Southwest Airlines announced that it was beginning to retrofit its aircraft to accommodate new, extra legroom seats with the first planes featuring the retrofi

Southwest will start rolling out extra legroom seats on May 1, gradually retrofitting planes through the year, part of a broader transformation that includes ending the two-bags-fly-free policy.