Boeing and Alaska Airlines have announced an order for five additional Next-Generation 737-900ERs (Extended Range).

The order, valued at $481 million at list prices, continues Alaska Airlines’ investment in its fleet and efforts to improve fuel performance.

“Today’s announcement supports our goal of growing Alaska Airlines by four to eight percent a year,” said Mark Eliasen, Alaska Air Group, vice president, finance and treasurer.

“The 737-900ER is a great aircraft, with the cost efficiency and reliability needed for us to be successful in today’s competitive marketplace.”

The largest and newest model in the Next-Generation 737 family, the 737-900ER can carry up to 26 more passengers or fly about 500 nautical miles (926 km) farther than the 737-900.

Alaska Airlines operates the 737-900ER in a two-class configuration with 181 seats and features the Boeing Sky Interior.

“The order of five additional 737-900ERs is an affirmation of our hometown partner’s successful strategy of offering customers good value, delivering a great onboard experience and running an on-time airline,” said Brad McMullen, vice president of North America Sales, Boeing Commercial Airplanes.

“The 737-900ER offers Alaska Airlines the best seat-mile cost of any single-aisle airplane in production, which is especially important with today’s high fuel prices.

“The interior also complements Alaska’s excellent customer service, providing the passengers with a wonderful flying experience.”