American Airlines and Alaska Airlines announced a new agreement increasing the number of codeshare routes operated by the two carriers across the U.S. earlier this month.
The expansion deal will allow American to add its code to 22 Alaska flights between California and Hawaii.
Alaska will in turn place its code on 19 American flights serving destinations across the mainland U.S., providing the Seattle-based carrier access to 13 new cities.
“For more than a decade our customers have benefited greatly from our relationship with American Airlines,” Andrew Harrison, Alaska's vice president of planning and revenue management, said in a statement. “This codeshare expansion will offer our customers even greater access to American’s extensive network.”