United Airlines and JetBlue recently launched a new partnership, Blue Sky. Passengers can now earn and redeem reciprocal loyalty and award benefits with each carrier. Program members will also get extra perks such as one free bag, seats with extra leg room, and the ability to make same-day changes to tickets.

Jetblue and United are teaming up. The airlines announced a partnership on Thursday to sell each other’s flights and link up their loyalty points programs. It’s the latest move by JetBlue to expand its network of routes. For years, Jetblue has been searching for the one — an airline to partner with, said Richard Aboulafia of AeroDynamic Advisory.