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Southwest Opens Booking for Summer 2026 West Coast Expansion Adding Hawaii Flights and Record San Diego Schedule

Launch dates are set with San Diego scheduled to reach 139 peak-day departures in August and September 2026.

Overview

  • The airline extended its schedule through Sept. 30, 2026 and began selling an expanded Southern California lineup spanning San Diego, Ontario, Burbank and Long Beach.
  • Ontario–Honolulu launches daily on June 4, 2026, and BurbankHonolulu begins Aug. 4, 2026 on peak travel days.
  • Long Beach adds Portland and Seattle starting Aug. 4, 2026, operating six days per week and marking Southwest’s return to those Pacific Northwest routes from the Los Angeles area.
  • San Diego gains daily service to Santa Barbara on Aug. 4, 2026 and will double daily roundtrips to Portland, Salt Lake City and Seattle that same day, supporting a peak schedule of 139 departures in late summer.
  • Southwest is pairing the growth with recent product changes including a redesigned cabin, assigned and premium seating, free Wi‑Fi for Rapid Rewards members via T‑Mobile and in‑seat power on 737‑8s, as industry coverage frames the moves as heightening competition with Alaska Airlines.