Boeing (NYSE:BA) announced some good news today. It has signed a deal to supply Alaska Air Group's (NYSE:ALK) Alaska Airlines with 50 new planes.

The order with a list price of more than $5 billion, the largest in Alaska Airlines' history, will include 37 of Boeing's new fuel-efficient 737 MAX planes as well as 13 Next-Generation 737-900ERs, according to the companies.

"This order demonstrates our hometown airline's strong commitment to operate the most fuel-efficient single-aisle airplanes in the market today and in the future," said Boeing Commercial Airplanes President Ray Conner in a press release.

The 737 MAX has now tallied 858 orders . Boeing boasts that "airlines operating the 737 MAX will see a 13 percent fuel-use improvement over today's most fuel-efficient single-aisle airplanes and an 8 percent operating cost per seat advantage over tomorrow's competition."

The news of this order follows the falling apart this week of a potential merger between Boeing's top rival, EADS-owned Airbus, and BAE, which would have created a big aerospace rival.

The planes of this order are set to arrive between 2015 and 2022.

Dan Carroll has no positions in the stocks mentioned above. The Motley Fool has no positions in the stocks mentioned above. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.