HONOLULU (KHON2) -- Southwest Airlines announced additional flights between Hawaii and the continental U.S., which will start in April. Get Hawaii's latest morning news delivered to your inbox, sign up for News 2 You The five new redeye flights will provide service to Las Vegas and Phoenix from Honolulu and Kahului. One flight will operate between Kona and Las Vegas. Is flying on a Tuesday cheaper? Testing 3 TikTok flight hacks The service is set to start on April 8. This comes as Southwest is also set to rollout their assigned seating program. Find more Hawaii, Oahu, Maui and Kauai news here The airline announced Thursday at their "Investor Day" that the program will begin in the “first half of 2026."