Southwest's Canyon Blue 737s in the Hawaiian Islands? The airline announced today of their intentions to serve Hawai‘i from the west coast. In order to begin service, aircraft from the Southwest fleet will need to be ETOPS 180 certified. The airline did not state which variant it would launch Hawai‘i service with, either their 737-8H4s or 737 MAX8s. Southwest will release further launch information at a later date.