Southwest Airlines has announced plans to begin flights to Alaska starting in May 2024, launching routes from both Denver and Las Vegas. This expansion marks a significant shift in the airline’s network, as it positions itself to directly compete with Alaska Airlines and United Airlines for travelers heading to the Last Frontier.
The addition of Alaska routes comes amid various changes to Southwest’s operations and product offerings. These new flights will operate overnight, enhancing connectivity for passengers flying from Nevada and Colorado. As of October 2023, the airline has confirmed that the direct flights from Las Vegas to Anchorage will take approximately 5 hours and 25 minutes, while the Denver to Anchorage route is set for about 5 hours and 30 minutes.
Key Long-Distance Routes in June 2026
According to Southwest’s operational data for June 2026, the airline’s longest flights will include routes from Phoenix to Honolulu, which will span 2,535 nautical miles and take up to 6 hours and 35 minutes. Other notable long-distance services include Las Vegas to Honolulu and Boston to San Diego, both of which will see daily operations.
While many of these routes exceed the duration of the upcoming Alaska flights, Southwest’s new service to Anchorage is part of a broader strategy to expand its market presence. Notably, the airline has been enhancing its offerings in key markets, aiming to improve passenger experience across its network.
Performance Insights and Future Prospects
Data from the US Department of Transportation indicates that in the year leading up to June 2025, Southwest transported approximately 14,151 round-trip passengers on the Denver to San Jose route, achieving a remarkable seat fill rate of 91%. Even though this route represents the airline’s second-smallest international market from Denver, it boasts the highest load factor, highlighting its operational success.
On the subject of international routes, the Denver to San Jose service, which covers 2,095 nautical miles, has been operational since March 2023. By May 2024, the airline plans to continue its offerings on Saturdays, maintaining its schedule from previous years. The use of the Boeing 737 MAX 8 for this route will allow for overnight stays in Costa Rica, showcasing Southwest’s commitment to expanding its international reach.
As Southwest Airlines prepares for its new Alaska routes, it continues to focus on maximizing operational efficiency and enhancing passenger connectivity. The airline’s strategic moves reflect its ambition to remain competitive in an evolving aviation landscape. With these developments, travelers can look forward to more options and improved services in the coming years.