Alaska Airlines announced Wednesday that it will begin nonstop daily flights between Philadelphia and Los Angeles, starting Sept. 2. The new route comes a month after Alaska said it would add a daily flight to San Francisco from Philadelphia on Aug. 31.

The first LAX-Philadelphia flight will be a red-eye departing Los Angeles at 8:45 p.m. on Sept. 1, arriving the next morning in Philadelphia at 4 a.m. Alaska acquired Virgin America Inc. in December.

The first flight from PHL, which will be operated on Virgin America aircraft, will depart Philadelphia at 6:30 a.m. on Sept. 2, arriving at LAX at 9:26 a.m. The route will be flown with Virgin America's A320 planes.

Los Angeles will be the fourth destination served nonstop from PHL by Alaska, which has a daily flight to Seattle, its home base. In May, the carrier will begin seasonal summer service to Portland, Ore. from PHL.

Alaska, popular in the Pacific Northwest and known for its customer service, is the fifth-largest U.S. airline, after acquiring Virgin America, which had flights from Philadelphia to California from 2012 to 2014.

The combined airline will adopt Alaska's name and logo, retiring the Virgin America name in 2019. Alaska plans to adopt many brand elements that Virgin America customers like, including enhanced in-flight entertainment, mood lighting, and music.

Currently, American Airlines and Spirit Airlines offer nonstop flights between Philadelphia and Los Angeles.

"This is more wonderful news for travelers in the Philadelphia region," said Philadelphia airport CEO Chellie Cameron. "We are very excited that Alaska is expanding in Philadelphia, and we look forward to more flights to more cities."