Skip to main content

Washington D C to St Louis Flights (IAD-STL) in April 2027

Washington, D.C. (IAD) → St Louis (STL)

Washington, D.C. (IAD) to St Louis (STL) in April 2027

Tap any part to change it

Watch fares from to , , , leaving , for in , , on . when .

Finding fares for April and May…

Washington, D.C. (IAD) to St Louis (STL) by month

November 2026
December 2026
January 2027
February 2027
March 2027
April 2027
May 2027
June 2027
July 2027
August 2027
September 2027
October 2027

Other Options for This Route

STL destination

Economy Roundtrip to St Louis (STL)

Washington, D.C. (IAD) to St Louis (STL) in September

Other Destinations

FLL destination

Economy Roundtrip to Fort Lauderdale (FLL)

Washington, D.C. (IAD) to Fort Lauderdale (FLL) in April

CLT destination

Economy One-way to Charlotte (CLT)

Washington, D.C. (IAD) to Charlotte (CLT) in April

SJU destination

Economy Roundtrip to San Juan (SJU)

Washington, D.C. (IAD) to San Juan (SJU) in April

FRA destination

Economy Roundtrip to Frankfurt (FRA)

Washington, D.C. (IAD) to Frankfurt (FRA) in April

NSI destination

Economy Roundtrip to Yaounde (NSI)

Washington, D.C. (IAD) to Yaounde (NSI) in April

TYOA destination

Premium Economy Roundtrip to Tokyo (Any)

Washington, D.C. (IAD) to Tokyo (Any) in April

Flights from Other Cities

STL destination

Economy Roundtrip to St Louis (STL)

Fort Myers (RSW) to St Louis (STL) in August

STL destination

Economy Roundtrip to St Louis (STL)

Banjul (BJL) to St Louis (STL) in October

STL destination

Economy One-way to St Louis (STL)

Miami (MIA) to St Louis (STL) in November

STL destination

Economy Roundtrip to St Louis (STL)

Fort Wayne (FWA) to St Louis (STL) in November

STL destination

Economy Roundtrip to St Louis (STL)

Lansing (LAN) to St Louis (STL) in November

Cheap economy Class Flights from Washington, D.C. (IAD) to St Louis (STL) April

Find the best deals on economy class flights. Compare prices for direct flights, one-stop, and multi-stop options.

Why Choose Economy Class Flights from Washington, D.C. (IAD) to St Louis (STL)?

Fares across the airlines on the route in one search
Nonstop and connecting flights side by side
A month of fares at a glance for april travel
Price alerts: we watch the fare and alert you when it drops

Planning a trip from Washington, D.C. (IAD) to St Louis (STL) in april? SlickTrip shows the cheapest economy fares across airlines, nonstop or with stops. Set an alert and we watch the route for you, then email you when the price drops. Booking happens on the airline's or travel site's own page.