United flights to Saint Louis
United's most popular flights to Saint Louis (STL)
*Prices have been available for round trips within the last 48 hours and may not be currently available. For Economy class, fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply. Schedules are subject to change without notice.
Business class deals on flights to Saint Louis (STL)
*Prices have been available for round trips within the last 48 hours and may not be currently available. For Economy class, fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply. Schedules are subject to change without notice.
Things to do after your flight to Saint Louis (STL)
Fly to St. Louis with United Airlines from over 200 airports within the United States and an additional 100 airports internationally.
St. Louis’s top attractions
- Ride to the top of iconic Gateway Arch, the tallest national monument in the world.
- Visit the Old Courthouse to learn about its significance to the Civil War.
- Admire the Cathedral Basilica of St. Louis.
- Photograph the Wainwright Building, one of the world’s first skyscrapers.
- Tour the famous Anheuser-Busch Brewery.
- Take kids to the Saint Louis Zoo or the Saint Louis Science Center.
- Stroll through Lafayette Square, the city’s first dedicated park.
- Visit museums including the City Museum, Missouri History Museum and the Saint Louis Art Museum.
Best time to travel to St. Louis
Spring and fall provide pleasant temperatures, though popular events take place in all seasons. Spring offers celebrations including the Gypsy Caravan and Missouri Tartan Day, in nearby Washington. Summertime events include the Fair Saint Louis, Festival of the Nations and the unique Veiled Prophet Parade. Music fans will love the Big Muddy Blues Festival in summer and fall’s Old Webster Jazz and Blues festival.
Weather in Saint Louis
Monday
moderate rain
2025-05-19
Tuesday
moderate rain
2025-05-20
Wednesday
scattered clouds
2025-05-21
Thursday
light rain
2025-05-22
Friday
few clouds
2025-05-23
Saturday
moderate rain
2025-05-24
Sunday
heavy intensity rain
2025-05-25
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