Cheap Flights to St Louis City County from $28

View $28 flight on Wed, Mar 4, 2026Opens in a new window

Popular airlines to St Louis City County

  • American Airlines

  • Delta

  • United

  • Southwest Airlines

  • Frontier Airlines

  • Alaska Airlines

  • Air Canada

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How much is the cheapest flight to St Louis City County?

Prices were available within the past 7 days and start at $28 for one-way flights and $56 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sat, Apr 25 - Sat, May 2
DEN
Denver
STL
St. Louis
$56 Roundtrip, found 7 hours ago
$56
Roundtrip
found 7 hours ago
Select Frontier Airlines flight, departing Sat, Apr 25 from Denver to St. Louis, returning Sat, May 2, priced at $56 found 7 hours ago
Frontier Airlines
Sat, Feb 28 - Wed, Mar 4
ATL
Atlanta
STL
St. Louis
$57 Roundtrip, found 12 hours ago
$57
Roundtrip
found 12 hours ago
Select Frontier Airlines flight, departing Sat, Feb 28 from Atlanta to St. Louis, returning Wed, Mar 4, priced at $57 found 12 hours ago
Frontier Airlines
Thu, Mar 26 - Tue, Mar 31
ATL
Atlanta
STL
St. Louis
$63 Roundtrip, found 17 hours ago
$63
Roundtrip
found 17 hours ago
Select Frontier Airlines flight, departing Thu, Mar 26 from Atlanta to St. Louis, returning Tue, Mar 31, priced at $63 found 17 hours ago
Frontier Airlines
Tue, Mar 31 - Tue, Apr 7
ATL
Atlanta
STL
St. Louis
$66 Roundtrip, just found
$66
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Mar 31 from Atlanta to St. Louis, returning Tue, Apr 7, priced at $66 just found
Frontier Airlines
Wed, Mar 11 - Wed, Mar 18
DEN
Denver
STL
St. Louis
$68 Roundtrip, found 15 hours ago
$68
Roundtrip
found 15 hours ago
Select Frontier Airlines flight, departing Wed, Mar 11 from Denver to St. Louis, returning Wed, Mar 18, priced at $68 found 15 hours ago
Frontier Airlines
Sat, May 9 - Sat, May 16
DEN
Denver
STL
St. Louis
$71 Roundtrip, just found
$71
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, May 9 from Denver to St. Louis, returning Sat, May 16, priced at $71 just found
United
Sat, Apr 25 - Sat, May 2
DEN
Denver
STL
St. Louis
$157 Roundtrip, found 7 hours ago
$157
Roundtrip
found 7 hours ago
Select United flight, departing Sat, Apr 25 from Denver to St. Louis, returning Sat, May 2, priced at $157 found 7 hours ago
Southwest Airlines
Wed, Apr 29 - Sat, May 2
DEN
Denver
STL
St. Louis
$168 Roundtrip, found 6 hours ago
$168
Roundtrip
found 6 hours ago
Select Southwest Airlines flight, departing Wed, Apr 29 from Denver to St. Louis, returning Sat, May 2, priced at $168 found 6 hours ago
Delta
Sat, Apr 25 - Sat, May 2
DEN
Denver
STL
St. Louis
$177 Roundtrip, found 7 hours ago
$177
Roundtrip
found 7 hours ago
Select Delta flight, departing Sat, Apr 25 from Denver to St. Louis, returning Sat, May 2, priced at $177 found 7 hours ago
American Airlines
Tue, Mar 31 - Tue, Apr 7
ATL
Atlanta
STL
St. Louis
$197 Roundtrip, just found
$197
Roundtrip
just found
Select American Airlines flight, departing Tue, Mar 31 from Atlanta to St. Louis, returning Tue, Apr 7, priced at $197 just found

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Airports in St Louis City County

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Lambert-St. Louis Intl. STL. Cheapest option available. Flights from $250
STL
Lambert-St. Louis Intl.
Cheapest
Flights from $250

Enjoy extra legroom, flight flexibility, and a seamless travel experience.

*Flight schedules are subject to change.

*Flight schedules are subject to change.

Trending flights to St Louis City County

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Wed, Mar 4 - Wed, Mar 4
ATL
Atlanta
STL
St. Louis
$56 Roundtrip, found 3 hours ago
$56
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Wed, Mar 4 from Atlanta to St. Louis, returning Wed, Mar 4, priced at $56 found 3 hours ago
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