Cheap flights from St. Louis to Northern Virginia

View AU$153 flight on Sat, 13 Sep. 2025Opens in a new window

Popular airlines from St. Louis to Northern Virginia

  • Jetstar

    Jetstar

  • Qantas Airways

    Qantas Airways

  • Virgin Australia

    Virgin Australia

  • Scoot

    Scoot

  • American Airlines

    American Airlines

  • Emirates

    Emirates

  • United

    United

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Cheap Flights from St. Louis (STL) to Northern Virginia (WAS)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, 3 Dec. - Tue, 16 Dec.
STL
St. Louis
BWI
Baltimore
AU$344 Return, found 13 hours ago
AU$344
Return
found 13 hours ago
Select Delta flight, departing Wed, 3 Dec. from St. Louis to Baltimore, returning Tue, 16 Dec., priced at AU$344 found 13 hours ago
Delta
Tue, 20 Jan. - Tue, 3 Feb.
STL
St. Louis
IAD
Washington
AU$414 Return, found 13 hours ago
AU$414
Return
found 13 hours ago
Select Delta flight, departing Tue, 20 Jan. from St. Louis to Washington, returning Tue, 3 Feb., priced at AU$414 found 13 hours ago
Delta
Tue, 16 Dec. - Wed, 31 Dec.
STL
St. Louis
BWI
Baltimore
AU$416 Return, found 13 hours ago
AU$416
Return
found 13 hours ago
Select Delta flight, departing Tue, 16 Dec. from St. Louis to Baltimore, returning Wed, 31 Dec., priced at AU$416 found 13 hours ago
Delta
Tue, 19 Aug. - Thu, 4 Sep.
STL
St. Louis
DCA
Washington
AU$435 Return, found 16 hours ago
AU$435
Return
found 16 hours ago
Select Delta flight, departing Tue, 19 Aug. from St. Louis to Washington, returning Thu, 4 Sep., priced at AU$435 found 16 hours ago
American Airlines
Thu, 4 Dec. - Sun, 7 Dec.
STL
St. Louis
DCA
Washington
AU$481 Return, found 18 hours ago
AU$481
Return
found 18 hours ago
Select American Airlines flight, departing Thu, 4 Dec. from St. Louis to Washington, returning Sun, 7 Dec., priced at AU$481 found 18 hours ago
United
Sun, 30 Nov. - Tue, 16 Dec.
STL
St. Louis
IAD
Washington
AU$526 Return, found 15 hours ago
AU$526
Return
found 15 hours ago
Select United flight, departing Sun, 30 Nov. from St. Louis to Washington, returning Tue, 16 Dec., priced at AU$526 found 15 hours ago

Find the cheapest month to fly from St. Louis (STL) to Washington (IAD)

February is typically the cheapest month to fly

From AU$229 - AU$926 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.