At first glance, it feels odd that Alaska Airlines operates an international flight from St. Louis. The airline is widely known for its strong presence on the US West Coast, with hubs in Seattle, Anchorage, and major California cities. St. Louis does not naturally fit into that picture. Yet, the route exists for a reason, and once you look closer, it actually makes a lot of sense.
A West Coast Airline Facing Winter Slowdowns
Alaska Airlines performs best during the summer months. Travel demand in the Pacific Northwest is high due to tourism, outdoor travel, and business movement. Winter, however, brings a sharp drop in demand across many of its core markets. Fewer passengers means aircraft are harder to fill, and leaving planes idle is costly.
To solve this problem, Alaska Airlines shifts capacity to regions where winter travel demand is stronger. Mexico is one of those regions. Many US travelers look for warm-weather escapes during colder months, creating steady demand for leisure-focused routes.
Why St. Louis Was Chosen
St. Louis is not a hub for Alaska Airlines, but it has a reliable base of leisure travelers. The airline launched a seasonal flight from St. Louis Lambert International Airport to Puerto Vallarta, operating just once a week, usually on Saturdays.
This low-frequency schedule keeps operating costs under control and limits financial risk. Alaska Airlines uses the Boeing 737 MAX 9 on this route, offering enough capacity without committing too many resources during a slow season.
The Importance of Guaranteed Bookings
A major factor behind the success of this route is Alaska Airlines’ partnership with Apple Vacations. The travel company books a large block of seats on each flight as part of vacation packages. This guarantees revenue before the aircraft even departs.
Alaska Airlines still sells remaining seats directly, but the bulk booking ensures the flight is profitable. During winter, when demand in core markets is weaker, guaranteed income like this is extremely valuable.
How This Route Differs From Traditional Flights

The seasonal St. Louis route follows a very different model compared to standard hub-based flights:
| Factor | Seasonal St. Louis Route | Traditional Hub Route |
|---|---|---|
| Flight Frequency | Once per week | Daily or multiple flights |
| Demand Risk | Low due to advance bookings | Higher in winter |
| Aircraft Use | Efficient during slow season | Often underused |
| Passenger Focus | Leisure travelers | Business and mixed travel |
This comparison shows why Alaska Airlines prefers this approach when winter demand is unpredictable.
Competition in the Local Market
St. Louis is dominated by Southwest Airlines, which controls most of the local market and already serves many leisure destinations. Alaska Airlines does not aim to compete across the entire network. Instead, it focuses on a narrow seasonal opportunity with stable demand and limited exposure.
By keeping its presence small, the airline avoids long-term risk if travel patterns change.
Final Thoughts
Alaska Airlines’ international flight from St. Louis may look unexpected on a route map, but it is based on clear logic. Seasonal demand, guaranteed bookings, and limited frequency turn a slow winter period into a steady revenue opportunity.
What seems unusual at first is actually a smart, low-risk strategy that fits neatly into Alaska Airlines’ broader business plan.

