$208 Cheap United flights Washington (IAD) to St. Louis (STL)

View $208 flight on Sat, Sep 12, 2026Opens in a new window

$208 Cheap United flights Washington (IAD) to St. Louis (STL)

Prices were available within the past 7 days and start at $208 for one-way flights and $336 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Fri, Jul 24 - Tue, Jul 28
IAD
Washington
STL
St. Louis
$336 Roundtrip, found 1 day ago
$336
Roundtrip
found 1 day ago
Select United flight, departing Fri, Jul 24 from Washington to St. Louis, returning Tue, Jul 28, priced at $336 found 1 day ago
United
Sun, Jun 21 - Thu, Jul 2
IAD
Washington
STL
St. Louis
$428 Roundtrip, found 1 day ago
$428
Roundtrip
found 1 day ago
Select United flight, departing Sun, Jun 21 from Washington to St. Louis, returning Thu, Jul 2, priced at $428 found 1 day ago

Alternative airports near St. Louis

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. Average driving time to city center is 20 minutes. Flights from $170
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center20 min
Flights from $170

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
American Airlines, Delta, Frontier Airlines, United
Popular airline
United
Distance
1111 km
Average flight time
1 hour 32 mins

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