Cheap flights from St Louis (STL)

Missouri's biggest airport, 14 miles northwest of downtown

St. Louis Lambert International sits about 14 miles northwest of downtown St. Louis, Missouri. Once a TWA hub, it is now a focus city for Southwest. Major carriers also include American, Delta, United, Alaska, JetBlue, Frontier, and Spirit. Routes are largely domestic with seasonal nonstops to Mexico and Caribbean leisure destinations. Long-haul international travel connects via ORD, DFW, or ATL.

Why search this airport on Flightmussy

Airlines flying from St Louis (STL)

Major carriers: Southwest Airlines, American Airlines, Delta Air Lines, United Airlines, Alaska Airlines. Low-cost carriers: Southwest Airlines, Frontier Airlines, Spirit Airlines, JetBlue Airways.

Popular destinations from St Louis (STL)

Frequently asked questions

Which airlines fly from St. Louis?
Southwest is the largest carrier at STL by passenger volume, with American, Delta, United, and Alaska also operating substantial schedules. Frontier and Spirit add ULCC capacity. Flightmussy's 12-month fare heatmap compares all of them on a single screen, free, no signup.
When is the cheapest month to fly out of St. Louis?
Late January through February and the first three weeks of September consistently deliver the lowest STL fares, avoiding spring break, summer peak, and the holiday rush. Flightmussy's 12-month fare heatmap visualises every week so you can spot the dip instantly.
How far is Lambert Airport from downtown St. Louis?
STL is about 14 miles (23 km) northwest of downtown St. Louis. The MetroLink Red Line connects the airport directly to downtown in roughly 35 minutes for a flat fare. Rideshare typically takes 20-30 minutes outside rush hour. Flightmussy lists arrival times for transfer planning.
Are there direct international flights from St. Louis?
STL has seasonal nonstops to Cancun (CUN) on Southwest and other Mexican leisure destinations, but no scheduled long-haul international routes. European or Asian travel connects via ORD, DFW, ATL, or JFK. Flightmussy automatically surfaces the best one-stop international itineraries from STL.

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