
St. Louis, Missouri, is a major transportation hub in the Midwest, served by several airlines that connect the city to destinations across the United States and beyond. Lambert-St. Louis International Airport (STL) is the primary airport serving the region, offering a wide range of domestic and limited international flights. Major airlines operating at STL include Southwest Airlines, Delta Air Lines, American Airlines, United Airlines, and Frontier Airlines, each providing numerous daily flights to key cities such as Chicago, Atlanta, Dallas, and New York. Additionally, regional carriers like Cape Air and Air Choice One offer service to smaller airports, ensuring comprehensive connectivity for both business and leisure travelers. Whether you're planning a domestic trip or a connecting flight, St. Louis’s airport provides convenient options for reaching your destination.
| Characteristics | Values |
|---|---|
| Airport Name | St. Louis Lambert International Airport (STL) |
| Major Airlines | Southwest Airlines, American Airlines, Delta Air Lines, United Airlines |
| Other Airlines | Frontier Airlines, Air Canada, Cape Air, Allegiant Air |
| Domestic Destinations | Major U.S. cities including New York, Los Angeles, Chicago, Dallas, etc. |
| International Flights | Limited direct international flights; primarily to Canada (Air Canada) |
| Cargo Airlines | FedEx Express, UPS Airlines |
| Low-Cost Carriers | Southwest Airlines, Frontier Airlines, Allegiant Air |
| Hub Status | Not a major hub; focus city for Southwest Airlines |
| Annual Passengers | Approximately 14-16 million (pre-pandemic levels) |
| Terminals | 2 terminals (Terminal 1 and Terminal 2) |
| Notable Services | TSA PreCheck, Global Entry, various dining and shopping options |
| Ground Transportation | MetroLink, taxis, ride-sharing (Uber/Lyft), rental cars, hotel shuttles |
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What You'll Learn

Major U.S. carriers serving St. Louis Lambert International Airport
St. Louis Lambert International Airport (STL) is a significant hub in the Midwest, offering a wide range of domestic and international flights. Among the major U.S. carriers serving this airport, Southwest Airlines stands out as one of the most prominent. Known for its extensive network and customer-friendly policies, Southwest operates numerous daily flights from STL to key destinations across the United States. Popular routes include Chicago, Dallas, Denver, and Orlando, making it a convenient choice for both business and leisure travelers. Southwest’s presence at STL is notable, with multiple gates dedicated to its operations, ensuring efficient boarding and deboarding processes.
Another major carrier at St. Louis Lambert International Airport is American Airlines. As one of the largest airlines in the world, American Airlines provides extensive connectivity from STL to its hubs in Charlotte, Dallas/Fort Worth, and Phoenix, among others. This allows passengers to easily connect to a vast array of domestic and international destinations. American Airlines also offers premium services, including first-class and business-class options, catering to travelers seeking enhanced comfort and convenience. The airline’s frequent flyer program, AAdvantage, is a significant draw for loyal customers.
Delta Air Lines is another key player at STL, offering a robust network of flights to its hubs in Atlanta, Detroit, and Minneapolis. Delta’s presence at the airport is marked by its commitment to reliability and customer service. The airline provides a range of amenities, including in-flight entertainment and Wi-Fi on select routes, ensuring a pleasant travel experience. Delta’s SkyMiles program is also popular among frequent flyers, offering rewards and benefits for regular travelers. The airline’s focus on sustainability and innovation further enhances its appeal to modern travelers.
United Airlines also serves St. Louis Lambert International Airport, connecting STL to its major hubs in Chicago, Denver, and Houston. United’s extensive network allows passengers to reach numerous domestic and international destinations with ease. The airline is known for its premium cabin options, including Polaris business class, which offers lie-flat seats and gourmet dining. United’s MileagePlus program is another attractive feature, providing members with opportunities to earn and redeem miles for flights and upgrades. The airline’s emphasis on technology, such as mobile app features for seamless travel, adds to its convenience.
Lastly, Spirit Airlines has established a strong presence at STL, catering to budget-conscious travelers. Known for its low-cost model, Spirit offers affordable fares to destinations like Las Vegas, Orlando, and Fort Lauderdale. While the airline charges additional fees for services like baggage and seat selection, its no-frills approach appeals to those prioritizing cost savings. Spirit’s growing route network from STL reflects the increasing demand for economical travel options in the region. Together, these major U.S. carriers ensure that St. Louis Lambert International Airport remains a well-connected and accessible gateway for travelers.
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International airlines with direct flights to St. Louis
St. Louis Lambert International Airport (STL) serves as a key gateway to the Midwest, but its international flight options are somewhat limited compared to larger hubs. Currently, Air Canada is the primary international airline offering direct flights to St. Louis. Air Canada operates daily non-stop service between Toronto Pearson International Airport (YYZ) and STL, providing convenient access for travelers from Canada and connecting passengers from other international destinations. This route is particularly popular for business travelers and tourists exploring the Midwest or connecting to other U.S. cities.
While direct international flights to St. Louis are scarce, Lufthansa previously operated a seasonal non-stop route between Frankfurt (FRA) and STL. However, this service has been discontinued in recent years, leaving Air Canada as the sole international carrier with direct flights. Travelers seeking international destinations from St. Louis often rely on connecting flights through major U.S. hubs like Chicago (ORD), Atlanta (ATL), or New York (JFK), where a wider range of international airlines operate.
For those looking to fly internationally from St. Louis, it’s essential to plan connections strategically. American Airlines, Delta Air Lines, and United Airlines dominate the domestic routes from STL and offer extensive international networks from their hubs. For example, American Airlines connects St. Louis to its hub in Dallas/Fort Worth (DFW), where passengers can access flights to Europe, Asia, and Latin America. Similarly, Delta’s hub in Atlanta provides connections to numerous international destinations.
Despite the limited direct international options, St. Louis remains well-connected globally through its domestic partners. Travelers can explore international flights with airlines like British Airways, Air France, or Emirates by connecting through their respective U.S. gateways. While not direct, these options ensure that St. Louis residents and visitors can reach international destinations with relative ease.
In summary, Air Canada stands as the only international airline currently offering direct flights to St. Louis, with daily service from Toronto. For other international travel, passengers typically rely on connecting flights through major U.S. hubs served by airlines like American, Delta, and United. While direct international options are limited, strategic planning and connections through partner airlines ensure that St. Louis remains accessible to global travelers.
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Regional airlines operating routes to St. Louis
St. Louis Lambert International Airport (STL) serves as a key hub for both domestic and regional travel, with several regional airlines operating routes to and from the city. These airlines play a crucial role in connecting St. Louis to smaller cities and towns across the Midwest and beyond, providing essential travel options for both business and leisure travelers. Among the regional carriers, Cape Air stands out for its service to St. Louis. Cape Air operates flights to destinations like Marion, Illinois, and other regional points, using small, efficient aircraft that are ideal for shorter routes. Their focus on reliability and customer service makes them a popular choice for travelers looking to connect to St. Louis from nearby areas.
Another significant regional airline serving St. Louis is Air Choice One. This carrier specializes in connecting smaller, underserved airports to major hubs like St. Louis. Air Choice One operates flights to destinations such as Burlington, Iowa, and Fort Dodge, Iowa, providing vital links for residents in these communities. Their partnership with larger airlines allows passengers to seamlessly connect to broader networks, making St. Louis a convenient gateway for regional travelers. The airline’s commitment to accessibility and affordability ensures that even remote areas remain well-connected to the city.
Contour Airlines is another regional carrier that operates routes to St. Louis, focusing on providing convenient and efficient travel options. Contour serves destinations like Joplin, Missouri, and other regional cities, often using smaller turboprop aircraft. Their emphasis on punctuality and customer satisfaction has made them a reliable option for travelers seeking direct flights to St. Louis from nearby locations. By offering these routes, Contour Airlines helps reduce travel time and hassle for passengers in the region.
In addition to these carriers, United Express and American Eagle, the regional subsidiaries of United Airlines and American Airlines, respectively, also play a significant role in connecting St. Louis to smaller cities. United Express operates flights to destinations like Quincy, Illinois, and Columbia, Missouri, while American Eagle serves routes to places like Springfield, Missouri, and Peoria, Illinois. These regional brands leverage the networks of their parent companies to provide seamless connections for passengers traveling to and from St. Louis. Their integration with larger airline systems ensures that regional travelers have access to a wide range of domestic and international destinations via St. Louis.
Lastly, Delta Connection, the regional arm of Delta Air Lines, contributes to the regional connectivity of St. Louis by operating flights to nearby cities like Evansville, Indiana, and Paducah, Kentucky. Delta Connection’s focus on efficiency and integration with Delta’s global network makes it an attractive option for travelers looking to connect through St. Louis. Together, these regional airlines ensure that St. Louis remains a well-connected hub, offering diverse travel options for passengers across the Midwest and beyond. Their collective efforts highlight the importance of regional carriers in maintaining accessible and efficient air travel networks.
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Seasonal or limited-time flights to St. Louis
St. Louis Lambert International Airport (STL) serves as a key hub for both domestic and international travelers, with several airlines offering seasonal or limited-time flights to accommodate fluctuating demand. During peak travel seasons, such as summer and holidays, airlines like Southwest Airlines and American Airlines often increase their flight frequencies to St. Louis. For instance, Southwest, which operates numerous daily flights to STL, adds extra routes from popular leisure destinations like Orlando (MCO) and Las Vegas (LAS) during summer months to cater to vacationers. These seasonal additions are typically announced a few months in advance, so travelers should monitor Southwest’s schedule updates for the best availability.
Delta Air Lines also adjusts its schedule to meet seasonal demand, particularly for business and leisure travelers. During the winter holiday season, Delta often introduces additional flights from warm-weather destinations such as Phoenix (PHX) and Miami (MIA) to St. Louis. These limited-time routes are designed to accommodate families visiting relatives or escaping colder climates. Similarly, in the fall, Delta may offer more flights from college towns like Athens (AHN) or Tuscaloosa (TCL) to STL, aligning with university breaks and sporting events.
Internationally, Air Canada provides seasonal service to St. Louis from Toronto (YYZ) during the summer months, catering to tourists and business travelers. This route is particularly popular for Canadians visiting St. Louis’s attractions, such as the Gateway Arch or attending conferences. The seasonal nature of this flight means it typically operates from May through September, with bookings opening in the early spring. Travelers should plan ahead, as these flights often fill quickly due to limited availability.
Frontier Airlines is another carrier known for its seasonal and limited-time flights to St. Louis, focusing on budget-conscious travelers. During spring break and summer, Frontier may introduce non-stop routes from destinations like Denver (DEN) or Tampa (TPA) to STL. These flights are often part of promotional campaigns, offering low fares to attract leisure travelers. However, these routes are subject to change based on demand, so it’s advisable to book early and stay informed about Frontier’s seasonal schedule adjustments.
Lastly, Sun Country Airlines occasionally offers limited-time flights to St. Louis from its hub in Minneapolis (MSP) or seasonal destinations like Fort Myers (RSW) during peak travel periods. These flights are typically marketed as part of vacation packages or holiday specials. While Sun Country’s presence in St. Louis is not year-round, their seasonal offerings provide additional flexibility for travelers during high-demand times. To take advantage of these limited-time flights, travelers should sign up for airline newsletters or alerts to stay informed about new route announcements and promotions.
In summary, seasonal or limited-time flights to St. Louis are offered by several airlines, including Southwest, Delta, Air Canada, Frontier, and Sun Country, to meet the varying demands of travelers throughout the year. These routes are often tied to peak travel seasons, holidays, or special events, making them ideal for both leisure and business travelers. Planning ahead and staying informed about airline schedule updates are key to securing seats on these temporary routes.
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Low-cost carriers flying into St. Louis
St. Louis Lambert International Airport (STL) serves as a key hub for travelers visiting the Gateway to the West, and several low-cost carriers operate flights to and from this airport, making it an affordable destination for budget-conscious travelers. Among the most prominent low-cost airlines flying into St. Louis is Southwest Airlines, known for its no-fee policy on checked bags and flexible ticketing options. Southwest offers multiple daily flights to St. Louis from various cities across the United States, including Chicago, Dallas, and Denver. The airline’s extensive network and frequent sales make it a popular choice for travelers looking to save on airfare without sacrificing convenience.
Another significant low-cost carrier serving St. Louis is Frontier Airlines, which focuses on providing ultra-low fares with additional fees for extras like seat selection and carry-on baggage. Frontier connects St. Louis to destinations such as Orlando, Denver, and Las Vegas, making it an attractive option for leisure travelers. While the base fares are often very competitive, passengers should be aware of potential add-on costs to avoid surprises. Frontier’s route network from St. Louis is expanding, offering more options for those seeking affordable travel.
Spirit Airlines is also a major player in the low-cost carrier market at St. Louis Lambert International Airport. Known for its stripped-down pricing model, Spirit offers some of the lowest base fares available but charges fees for almost everything beyond the seat itself, including water and carry-on bags. Despite this, Spirit remains a go-to choice for travelers prioritizing cost savings over amenities. The airline operates flights from St. Louis to popular destinations like Fort Lauderdale, Las Vegas, and Tampa, catering to both vacationers and business travelers on a budget.
For travelers seeking international low-cost options, Sun Country Airlines occasionally offers seasonal or limited flights to St. Louis, though its focus is primarily on leisure destinations. While not as frequent as domestic low-cost carriers, Sun Country provides competitive pricing for those looking to fly to or from St. Louis during specific times of the year. Additionally, Allegiant Air operates flights to St. Louis from smaller regional airports, targeting travelers from secondary markets. Allegiant’s model emphasizes affordability, though its schedule is less frequent and often seasonal, catering to vacationers rather than regular commuters.
In summary, low-cost carriers like Southwest, Frontier, Spirit, and Allegiant Air provide St. Louis travelers with a variety of affordable options for domestic and, in some cases, international flights. Each airline has its own pricing model and fee structure, so passengers should compare options carefully to find the best deal. With these carriers, St. Louis remains an accessible and budget-friendly destination for both leisure and business travelers.
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Frequently asked questions
Major airlines serving St. Louis Lambert International Airport include Southwest Airlines, American Airlines, Delta Air Lines, United Airlines, and Air Canada.
Yes, St. Louis Lambert International Airport offers limited international flights, primarily to destinations like Cancun, Toronto, and seasonal flights to other locations.
Budget-friendly airlines serving St. Louis include Southwest Airlines, Frontier Airlines, and Allegiant Air.
Yes, direct flights to West Coast cities like Los Angeles, San Francisco, and Seattle are available through airlines such as Southwest, American, and Delta.
Nearby regional airports include MidAmerica St. Louis Airport (BLV) in Belleville, IL, served by Allegiant Air, and Spirit of St. Louis Airport (SUS) in Chesterfield, MO, which is primarily for private and charter flights.






































