Why In The World Does Alaska Airlines Fly Internationally From St. Louis?

Despite its name evoking the “last frontier,” Alaska Airlines actually operates out of Seattle and stands as the dominant air carrier across the Pacific Northwest. Its main hub is Seattle-Tacoma International Airport, complemented by a substantial presence in Alaska through its Anchorage Ted Stevens International Airport hub, and a supporting “reliever” hub at Portland International Airport for its PNW operations. Beyond these, Alaska Airlines also maintains hubs in San Diego, San Francisco, and Los Angeles.

Alaska Airlines largely focuses its network on the West Coast, a strategy recently bolstered by its acquisition of Hawaiian Airlines. However, the airline’s 2025 winter season additions included some unexpected routes, such as a flight to Puerto Vallarta originating from St. Louis Lambert International Airport. St. Louis, famously the former hub of TWA and now primarily served by Southwest Airlines, is notable for being situated far from Alaska’s typical West Coast focus.

Alaska Airlines’ 2025 Winter Service Expansion

In January 2025, Alaska Airlines launched ten new seasonal services. Many of these additions were strategically sound, such as new connections between New Orleans and Portland, or Orlando and Boise (a key focus city for the airline). Alaska also introduced several flights from Sacramento, a significant city in California. More notably, the carrier added a new route from Kansas City to Cancun, alongside flights to Puerto Vallarta from Kansas City, New York JFK, St. Louis, and Sacramento.

While the Kansas City to Puerto Vallarta route didn’t return for the 2026 winter season, Alaska Airlines reinstated flights from New York JFK and St. Louis to Puerto Vallarta, as well as the Kansas City to Cancun service. Cancun is Mexico’s premier tourist destination, highly favored by American travelers, but Puerto Vallarta is a lesser-known city. Both Kansas City and St. Louis are dominated by Southwest Airlines and serve as secondary markets where Alaska lacks connecting traffic.

Alaska Airlines operates the Kansas City to Cancun and St. Louis to Puerto Vallarta routes exclusively on Saturdays, utilizing its largest aircraft, the Boeing 737 MAX 9. These routes are considered low-risk due to their weekly frequency. This infrequent schedule is somewhat atypical for a full-service airline connecting smaller cities.

Strategic Rationale for These Routes

Alaska Airlines introduces these relatively uncommon routes to address the seasonal fluctuations in airline demand. While many regions experience a dip in demand during winter, with summer being peak season, some markets maintain or even see an increase in travel. For Alaska Airlines’ core markets in the Pacific Northwest and Alaska, winter demand is significantly lower, leading to capacity challenges.

The solution involves a combination of accepting reduced load factors, optimizing aircraft utilization, and operating winter seasonal routes. Latin America, in particular, sees robust travel demand from the US during the winter months, prompting airlines to boost capacity. Given that Alaska Airlines is a smaller carrier compared to American, Delta, or United, its hubs typically generate less demand for Latin American routes than those of the “big three.”

Consequently, Alaska Airlines strategically launches flights to popular vacation spots from cities that are not its primary hubs. This includes locations like St. Louis, as well as Las Vegas, Sacramento, Kansas City, San Jose, and New York JFK. Specifically for the St. Louis flight, Alaska Airlines reportedly collaborates with Apple Vacations, which reserves a large block of seats on each flight, ensuring profitability for the airline.

While Alaska Airlines does sell a portion of the seats directly, this supplemental revenue acts as an added bonus. A similar arrangement is in place for the Kansas City to Cancun route. This strategy provides guaranteed income for the airline, proving to be an ideal use of resources during the off-peak winter season, even if it wouldn’t be the most efficient approach during periods of high demand.

Competitive Landscape in St. Louis

Beyond the Puerto Vallarta route, Alaska Airlines has a minimal footprint in St. Louis, with Seattle being its sole year-round destination, supplemented by seasonal service to Portland. Southwest Airlines holds a dominant position in St. Louis, offering an extensive domestic network. Moreover, Southwest provides connections from St. Louis to numerous Latin American destinations, directly competing with Alaska Airlines on the Puerto Vallarta route for part of the year.

Traditional legacy carriers typically limit their St. Louis service to their respective hub airports. However, American Airlines is an exception, offering direct flights from St. Louis to Cancun, in addition to American Eagle services to Boston. Frontier Airlines also has a strong presence in St. Louis, serving six domestic destinations with a seventh launching in March, and offering international flights to Cancun and Punta Cana.

St. Louis also boasts year-round international service to Frankfurt via Lufthansa, with British Airways set to introduce London service in April. Despite St. Louis experiencing urban population decline, Lambert International Airport has successfully expanded its network, with passenger volumes now exceeding 2019 levels. While Alaska Airlines’ presence here is unlikely to expand significantly, the airport is actively growing and officials continue to pursue new flight opportunities.

Alaska Airlines’ Strategic Approach to These Routes

Airlines operate with a finite number of aircraft, necessitating careful decisions about the most profitable deployment of each plane. During the off-peak season, aircraft utilization naturally declines. In this context, agreements like the one with Apple Vacations offer a reliable revenue stream when identifying new profitable routes becomes challenging. This, combined with relatively low competition, presents a low-risk opportunity for additional earnings.

The New York JFK to Puerto Vallarta route is a more nuanced case. It benefits from limited direct competition, with the only other option being United Airlines’ service from Newark. However, Alaska Airlines has less brand recognition on the East Coast and does not have an Apple Vacations partnership for this specific flight. Furthermore, New York is a high-income city with many travelers actively participating in airline loyalty programs.

Nevertheless, Alaska’s strong partnership with fellow oneworld alliance member American Airlines provides a key advantage in this market. While American Airlines is the fourth-largest carrier in the New York area, it still boasts a significant AAdvantage customer base that can be directed towards Alaska Airlines for Puerto Vallarta travel, providing valuable connecting traffic. Despite JFK being unfamiliar territory for Alaska Airlines, the route successfully returned for the 2026 winter season and is currently available for booking through the 2027 winter season.

Alaska Airlines Onboard Experience

For short-haul operations, Alaska Airlines exclusively employs the Boeing 737, with most of its fleet comprising 737-900ERs and 737 MAX 9s. According to aeroLOPA data, both aircraft types feature 16 first-class seats and 162 economy seats, including 30 with extra legroom. The airline also operates fewer 737-700, 737-800, and 737 MAX 8 models, with the 737-700s and some 737-800s and 737 MAX 8s configured with 12 first-class seats.

While the three major legacy carriers typically fit 16 first-class seats and between 144 to 156 economy seats on their 737-800/737 MAX 8 aircraft, and a standard 737-900ER/737 MAX 9 layout usually includes 20 first-class and 159 or 160 economy seats, Alaska Airlines offers a different configuration. Its unique layouts prioritize first-class legroom, providing the most spacious first-class seating among any US airline, with pitches ranging from 40 inches (101.6 cm) to 41 inches (104.14 cm).

While Alaska Airlines aircraft do not feature seatback entertainment screens, passengers can stream content directly to their personal devices. Additionally, the majority of Alaska’s fleet provides Wi-Fi, with a planned transition to Starlink internet service. Despite a focus on efficiency over numerous physical amenities, Alaska Airlines is highly regarded for its attentive onboard service and quality meal selections, positioning it as one of the top airlines for short-haul travel in the United States.