Cheap Flights to Washington County from $23

View $23 flight on Sat, Mar 7, 2026Opens in a new window

Popular airlines to Washington County

  • American Airlines

  • Delta

  • United

  • Southwest Airlines

  • Frontier Airlines

  • Alaska Airlines

  • Air Canada

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How much is the cheapest flight to Washington County?

Prices were available within the past 7 days and start at $23 for one-way flights and $46 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, Feb 26 - Mon, Mar 2
MCO
Orlando
STL
St. Louis
$56 Roundtrip, just found
$56
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Feb 26 from Orlando to St. Louis, returning Mon, Mar 2, priced at $56 just found
Frontier Airlines
Thu, Feb 26 - Tue, Mar 3
MCO
Orlando
STL
St. Louis
$66 Roundtrip, found 8 hours ago
$66
Roundtrip
found 8 hours ago
Select Frontier Airlines flight, departing Thu, Feb 26 from Orlando to St. Louis, returning Tue, Mar 3, priced at $66 found 8 hours ago
Frontier Airlines
Fri, Mar 6 - Sat, Mar 7
DEN
Denver
STL
St. Louis
$67 Roundtrip, found 1 hour ago
$67
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Fri, Mar 6 from Denver to St. Louis, returning Sat, Mar 7, priced at $67 found 1 hour ago
Frontier Airlines
Sat, Feb 28 - Mon, Mar 9
MCO
Orlando
STL
St. Louis
$68 Roundtrip, found 5 hours ago
$68
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Sat, Feb 28 from Orlando to St. Louis, returning Mon, Mar 9, priced at $68 found 5 hours ago
Frontier Airlines
Wed, Mar 11 - Wed, Mar 18
DEN
Denver
STL
St. Louis
$72 Roundtrip, found 3 hours ago
$72
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Wed, Mar 11 from Denver to St. Louis, returning Wed, Mar 18, priced at $72 found 3 hours ago
Frontier Airlines
Sat, Feb 28 - Sat, Mar 7
DEN
Denver
STL
St. Louis
$77 Roundtrip, found 3 hours ago
$77
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Sat, Feb 28 from Denver to St. Louis, returning Sat, Mar 7, priced at $77 found 3 hours ago
Frontier Airlines
Wed, Mar 4 - Tue, Mar 10
MCO
Orlando
STL
St. Louis
$78 Roundtrip, found 6 hours ago
$78
Roundtrip
found 6 hours ago
Select Frontier Airlines flight, departing Wed, Mar 4 from Orlando to St. Louis, returning Tue, Mar 10, priced at $78 found 6 hours ago
United
Sat, Apr 25 - Sat, May 2
DEN
Denver
STL
St. Louis
$157 Roundtrip, found 3 hours ago
$157
Roundtrip
found 3 hours ago
Select United flight, departing Sat, Apr 25 from Denver to St. Louis, returning Sat, May 2, priced at $157 found 3 hours ago
Southwest Airlines
Fri, Feb 27 - Sun, Mar 1
MCO
Orlando
STL
St. Louis
$157 Roundtrip, just found
$157
Roundtrip
just found
Select Southwest Airlines flight, departing Fri, Feb 27 from Orlando to St. Louis, returning Sun, Mar 1, priced at $157 just found
American Airlines
Thu, Apr 23 - Mon, Apr 27
DEN
Denver
CGI
Cape Girardeau
$386 Roundtrip, just found
$386
Roundtrip
just found
Select American Airlines flight, departing Thu, Apr 23 from Denver to Cape Girardeau, returning Mon, Apr 27, priced at $386 just found

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 Washington 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
Sat, Mar 7 - Sat, Mar 7
DEN
Denver
STL
St. Louis
$46 Roundtrip, found 1 hour ago
$46
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Sat, Mar 7 from Denver to St. Louis, returning Sat, Mar 7, priced at $46 found 1 hour ago
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