Without the new aircraft, Alaska said it must cancel 14 flights a day through the end of July. Horizon operates all of its flights on Embraer jets. Alaska operates an all-Boeing fleet.

An Alaska Airlines Embraer 175 taxis at Paine Field in Everett. Two Embraer E175 regional jets were scheduled to join Alaska’s fleet in May, but the deliveries were postponed due to tariffs.