US Airways on Wednesday detailed realignment plans, which include drastically cutting Las Vegas service and focusing on key hubs.

The airline will reduce Las Vegas service from 64 to 36 daily departures by February. US Airways said it is responding to continued weak demand in Las Vegas and high fuel prices.

US Airways said it will strengthen its core network, focusing on hubs in Charlotte, Philadelphia and Phoenix, while pumping up its presence at Washington Reagan National. The airline will no longer serve Colorado Springs and Wichita, Kan.

"By concentrating on our strengths, we will be better positioned to return US Airways to profitability, which will result in a more consistent experience for our customers, better returns for our shareholders and greater job stability and career opportunities for our employees," US Airways CEO Doug Parker said in a letter to employees outlining the changes.

Major hub operations and the US Airways Shuttle between New York LaGuardia, Boston and Washington Reagan will account for about 99% of the airline’s traffic, compared with 93% today.

In addition to slashing Las Vegas service, US Airways will suspend five transatlantic routes from Philadelphia (Birmingham, U.K.; London Gatwick; Milan; Shannon, Ireland; and Stockholm, Sweden) and return its Philadelphia-Beijing route authority to the Department of Transportation.

Like other carriers, US Airways had postponed the launch of new service to China last year but retained the route rights. US Airways was scheduled to launch the Beijing service in March.

Along with reducing Las Vegas service, US Airways will close its crew base there by Jan. 31. The airline also plans to close crew bases at New York LaGuardia and Boston, with deadlines of Jan. 31 and May 2, respectively.