Southwest adds 5 California routes: 2 to Hawaii

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• What Southwest announced and why it matters for travelers
• Five routes to watch: launch dates and frequency
• Expanded San Diego schedule: more frequency, more choices
• Competitive pressure on the West Coast
  • What passengers should expect from the rivalry
• Hawaii strategy: stronger mainland connectivity
• Practical tips for travelers booking these routes
• Further reading and useful guides for frequent flyers

Southwest Airlines is gearing up for a major West Coast expansion in 2026, unveiling several new California routes and boosted schedules that will reshape service across Southern California, the Pacific Northwest and Hawaii.

What Southwest announced and why it matters for travelers

On the cusp of Thanksgiving, the Dallas-based carrier revealed plans for five fresh routes next summer. The move increases nonstop options from Southern California and adds new links to Hawaii and the Pacific Northwest.

Southwest framed the expansion as the result of improved airport infrastructure and recent onboard upgrades. Airline leaders say new terminals and facilities helped unlock capacity for more flights.

Five routes to watch: launch dates and frequency

Below are the routes Southwest confirmed, with start dates and how often they will operate.

• Ontario (ONT) → Honolulu (HNL): Begins June 4, will operate daily.
• Hollywood-Burbank (BUR) → Honolulu (HNL): Begins Aug. 4, scheduled for peak travel days.
• Long Beach (LGB) → Portland (PDX): Begins Aug. 4, operates six days per week.
• Long Beach (LGB) → Seattle-Tacoma (SEA): Begins Aug. 4, operates six days per week.
• San Diego (SAN) → Santa Barbara (SBA): Begins Aug. 4, operates daily.

Expanded San Diego schedule: more frequency, more choices

Southwest is not only adding routes. The airline will also raise the number of daily round trips on several San Diego corridors starting Aug. 4.

The carrier expects to operate a record number of departures from San Diego on peak days next August and September. That translates to more morning and evening options for business and leisure flyers.

Competitive pressure on the West Coast

The growth feels like a strategic response to rival carriers expanding in key markets. Alaska Airlines, in particular, has been strengthening hubs and adding flights at San Diego, Portland and Burbank.

Alaska has cited both market demand and interest in its loyalty program, Atmos Rewards, as drivers for its push. Southwest’s new schedules place it in direct contention on many of the same city pairs.

What passengers should expect from the rivalry

• More flight options across Southern California and the Pacific Northwest.
• Potential for competitive fares as carriers vie for market share.
• Greater focus on loyalty perks and onboard amenities to attract repeat travelers.

Hawaii strategy: stronger mainland connectivity

With the Ontario and Burbank flights to Honolulu, Southwest will operate ten routes between Daniel K. Inouye International Airport and the U.S. mainland.

Southwest first entered the Hawaii market in 2019. The carrier’s growing presence raises the possibility of more on-the-ground investments in the islands, including future airport lounge options.

Practical tips for travelers booking these routes

• Book early for peak summer dates to secure preferred times and lower fares.
• Check schedule releases if you rely on connecting flights; frequency changes can improve or complicate connections.
• If you fly often to or from the West Coast, compare loyalty benefits across carriers before choosing tickets.

Further reading and useful guides for frequent flyers

• Your complete guide to getting the most from Southwest Rapid Rewards
• Top credit cards for maximizing Southwest travel value
• How to earn the Southwest Companion Pass quickly
• What Southwest elite status delivers and how to reach it
• Tips for changing or canceling Southwest flights without penalties