Alaska Airlines' capacity on routes to the central and eastern US will be up roughly 35% by September compared to the same period three years ago - a result of the carrier's strategic expansion of east-west US routes.
Still, the percentage of Alaska's seats on routes from the US west coast to Texas and points east will still account for only about 5% of Alaska's overall capacity, up just one point in three years, according to FlightMaps Analytics.
Alaska executives said during an 24 April first quarter earnings call that the carrier's 8.7% capacity increase during the quarter was due partly to new longer-haul routes to destinations in the central and eastern US.
The routes, however, are still in the "developmental" phase and are producing revenue below Alaska's system-wide average, president and chief executive Brad Tilden told investors.
By September, Alaska will serve more than 15 destinations in the central and eastern US from the west coast cities of Portland in Oregon, Seattle in Washington and Los Angeles and San Diego in California.
Earlier this year, Alaska started service from San Diego to Boston, Massachusetts. Last year the carrier launched flights from San Diego to Orlando, Florida; Seattle to Fort Lauderdale, Florida; Seattle to Philadelphia, Pennsylvania; Seattle to San Antonio, Texas and Portland to Washington National airport in Washington DC.
Alaska will launch Portland-Dallas, Texas service on 16 September and Portland-Atlanta, Georgia flights on 26 September, the carrier announced in recent days.
Alaska's capacity from the west coast to cities in the central and eastern US will reach roughly 144,000 seats in September, excluding the new flights to Dallas and Atlanta, according to Capstats. The recently-announced Dallas and Atlanta services are not yet loaded in Capstats.
That's up from about 106,000 seats in September 2010, 113,000 seats in September 2011 and 132,000 in September 2012.
Alaska faces competition from low cost carriers and network airlines on many of those routes.
American Airlines and Spirit Airlines service the Portland-Dallas route and Delta Air Lines flies from Portland to Atlanta.
JetBlue Airways flies nonstop from Boston to San Diego and US Airways flies from Seattle to Philadelphia.
Alaska is the only airline to serve San Diego-Orlando, Portland-Washington National, Seattle-Fort Lauderdale and Seattle-San Antonio, according to FlightMaps Analytics.