Flights from Washington, D.C. to Saint Louis from $ 231*
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1 Passenger, Economy
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today
today
Featured daily fares for flights from Washington, D.C. (IAD) to Saint Louis (STL)
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More United deals on Washington, D.C. (IAD) to Saint Louis (STL) flights
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$
Washington, D.C. (IAD)to
Saint Louis (STL)
02/07/26 - 02/14/26
Roundtrip
Economy
from
$Â 231
Viewed: 7 hours ago
Washington, D.C. (IAD)to
Saint Louis (STL)
02/10/26 - 02/14/26
Roundtrip
Economy
from
$Â 231
Viewed: 7 hours ago
Washington, D.C. (IAD)to
Saint Louis (STL)
01/18/26 - 01/21/26
Roundtrip
Economy
from
$Â 231
Viewed: 7 hours ago
Washington, D.C. (IAD)to
Saint Louis (STL)
01/20/26 - 01/24/26
Roundtrip
Economy
from
$Â 231
Viewed: 7 hours ago
Washington, D.C. (IAD)to
Saint Louis (STL)
01/20/26 - 01/27/26
Roundtrip
Economy
from
$Â 231
Viewed: 7 hours ago
Washington, D.C. (IAD)to
Saint Louis (STL)
02/03/26 - 02/10/26
Roundtrip
Economy
from
$Â 235
Viewed: 7 hours ago
Washington, D.C. (IAD)to
Saint Louis (STL)
02/04/26 - 02/11/26
Roundtrip
Economy
from
$Â 235
Viewed: 7 hours ago
Washington, D.C. (IAD)to
Saint Louis (STL)
02/24/26 - 03/03/26
Roundtrip
Economy
from
$Â 235
Viewed: 7 hours ago
*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.
