Tickets, which will include an increasingly-rare free seat assignment and two checked bags, could go on sale as soon as soon as this summer.

BBC: In brief: A budget airline for US skies

Delta gave me a seat assignment.

FORBES: A Few Key Differences Between Southwest and Delta

Routinely full flights have less seat-assignment flexibility.

WSJ: Flying With Little Children? Go to the Back of the Plane

The assignment will be another victory for Warren who won the Senate seat over moderate Republican and incumbent Senator Scott Brown in the Massachusetts race.

FORBES: Elizabeth Warren Is About To Win More Power With Senate Banking Seat