A river with cherry blossoms and the Washington Monument in the background.

Flights from Lambert-St. Louis International Airport (STL) to Washington, DC (WAS-All Airports)
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United States of America
Flights
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Popular airlines from Lambert-St. Louis International Airport (STL) to Washington

Delta
American Airlines
United
Frontier Airlines
Southwest Airlines
Alaska Airlines

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Cheap Flights from St. Louis to Washington (STL-WAS)

Prices were available within the past 7 days and start at CA $168 for one-way flights and CA $364 for roundtrip, for the period specified. Prices and availability are subject to change.

All deals

One way

Roundtrip

Thu, Dec 17 - Sat, Jan 16

STL

St. Louis

IAD

Washington

CA $364

Roundtrip

Found 1 day ago

Select Delta flight, departing Thu, Dec 17 from St. Louis to Washington, returning Sat, Jan 16, priced at CA $364 Found 1 day ago

Wed, Oct 28 - Wed, Nov 4

STL

St. Louis

BWI

Baltimore

CA $408

Roundtrip

Found 1 day ago

Select Delta flight, departing Wed, Oct 28 from St. Louis to Baltimore, returning Wed, Nov 4, priced at CA $408 Found 1 day ago

Wed, Oct 28 - Wed, Nov 4

STL

St. Louis

BWI

Baltimore

CA $416

Roundtrip

Found 1 day ago

Select Delta flight, departing Wed, Oct 28 from St. Louis to Baltimore, returning Wed, Nov 4, priced at CA $416 Found 1 day ago

Thu, Dec 17 - Sat, Jan 16

STL

St. Louis

IAD

Washington

CA $422

Roundtrip

Found 1 day ago

Select Delta flight, departing Thu, Dec 17 from St. Louis to Washington, returning Sat, Jan 16, priced at CA $422 Found 1 day ago

Thu, Dec 17 - Sat, Jan 16

STL

St. Louis

IAD

Washington

CA $434

Roundtrip

Found 1 day ago

Select Delta flight, departing Thu, Dec 17 from St. Louis to Washington, returning Sat, Jan 16, priced at CA $434 Found 1 day ago

Wed, Oct 28 - Wed, Nov 4

STL

St. Louis

BWI

Baltimore

CA $446

Roundtrip

Found 1 day ago

Select American Airlines flight, departing Wed, Oct 28 from St. Louis to Baltimore, returning Wed, Nov 4, priced at CA $446 Found 1 day ago

Wed, Oct 28 - Wed, Nov 4

STL

St. Louis

BWI

Baltimore

CA $447

Roundtrip

Found 1 day ago

Select American Airlines flight, departing Wed, Oct 28 from St. Louis to Baltimore, returning Wed, Nov 4, priced at CA $447 Found 1 day ago

Mon, Oct 5 - Tue, Oct 6

STL

St. Louis

IAD

Washington

CA $780

Roundtrip

Found 23 hours ago

Select United flight, departing Mon, Oct 5 from St. Louis to Washington, returning Tue, Oct 6, priced at CA $780 Found 23 hours ago

Mon, Oct 5 - Tue, Oct 6

STL

St. Louis

DCA

Washington

CA $808

Roundtrip

Found 23 hours ago

Select Southwest Airlines flight, departing Mon, Oct 5 from St. Louis to Washington, returning Tue, Oct 6, priced at CA $808 Found 23 hours ago

Mon, Dec 14 - Sun, Dec 20

STL

St. Louis

BWI

Baltimore

CA $1,562

Roundtrip

Found 1 day ago

Select Alaska Airlines flight, departing Mon, Dec 14 from St. Louis to Baltimore, returning Sun, Dec 20, priced at CA $1,562 Found 1 day ago

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

October is typically the cheapest month to fly

From CA $180 - CA $760 per traveller.

Travel information

Origin airport	Lambert-St. Louis International Airport
Destination airport	Washington Dulles International Airport
Distance	1,117 km away
Airlines serving	Delta, United, American Airlines, Frontier Airlines, Alaska Airlines
Popular airline	Delta
Roundtrip price	CA $364
Average flight time	2 hours 16 mins

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Flights

Flights from Cambridge (CGE) to Washington (WAS)
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Flights from Minneapolis (MSP) to Washington (WAS)
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Flights from Edmonton (YEG) to Washington (WAS)
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Flights from Chapeco (XAP) to Washington (WAS)
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Flights from Atlanta (ATL) to Washington (WAS)
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Flights from Fort Lauderdale (FLL) to Washington (WAS)
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Flights from Columbus (CMH) to Washington (WAS)
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Flights from Vancouver (YVR) to Baltimore (BWI)
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Flights from Huntsville (HSV) to Washington (WAS)
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Flights from Philadelphia (PNE) to Washington (WAS)
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Flights from Seattle (SEA) to Washington (WAS)
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Flights from Chino (CNO) to Washington (WAS)
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Flights from Burlington (BTV) to Washington (WAS)
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Flights from Vancouver (YDT) to Washington (WAS)
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Flights from St. Petersburg (LED) to Washington (WAS)
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Flights from Toronto (YTO) to Washington (WAS)
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Flights from Apple Valley (APV) to Washington (WAS)
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Flights from Providence (PVD) to Washington (WAS)
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Flights from Kelowna (YLW) to Washington (WAS)
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Flights from Minot (MOT) to Washington (WAS)
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Flights from Miramichi (YCH) to Washington (WAS)
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Flights from Sanya (SYX) to Washington (WAS)
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Flights from Toronto (YYZ) to Baltimore (BWI)
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Flights from Montreal (YUL) to Washington (WAS)
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Flights from Ottawa (YOW) to Washington (WAS)
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Flights from Edmonton (YEG) to Baltimore (BWI)
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Flights from Williamsport (IPT) to Washington (WAS)
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Flights from Québec (YQB) to Washington (WAS)
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Flights from Calgary (YYC) to Baltimore (BWI)
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Flights from Bella Bella (ZEL) to Washington (WAS)
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Flights from Cancun (CUN) to Washington (WAS)
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Flights from Kraków (KRK) to Washington (WAS)
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Flights from Moscow (MOW) to Washington (WAS)
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Flights from Jakarta (CGK) to Washington (WAS)
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Flights from Moncton (YQM) to Washington (WAS)
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Flights from Houston (IAH) to Washington (WAS)
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Flights from Lethbridge (YQL) to Washington (WAS)
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Flights from Prince George (YXS) to Washington (WAS)
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Flights from North Bay (YYB) to Washington (WAS)
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Flights from Victoria (YYJ) to Washington (WAS)
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Flights from Sikeston (SIK) to Washington (WAS)
Standard Link for Flights from Sikeston (SIK) to Washington (WAS)
Flights from Oshawa (YOO) to Washington (WAS)
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Flights from Laval (LVA) to Washington (WAS)
Standard Link for Flights from Laval (LVA) to Washington (WAS)
Flights from Aurora (AUZ) to Washington (WAS)
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Flights from Bogotá (BOG) to Washington (WAS)
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Flights from Vigo (VGO) to Washington (WAS)
Standard Link for Flights from Vigo (VGO) to Washington (WAS)
Flights from Boston (BOS) to Washington (WAS)
Standard Link for Flights from Boston (BOS) to Washington (WAS)
Flights from Sydney (SYD) to Washington (WAS)
Standard Link for Flights from Sydney (SYD) to Washington (WAS)
Flights from Montreal (YMQ) to Washington (WAS)
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Flights from Buffalo (BUF) to Washington (WAS)
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Flights from Palma de Mallorca (PMI) to Washington (WAS)
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Flights from Whitehorse (YXY) to Washington (WAS)
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Flights from Saskatoon (YXE) to Washington (WAS)
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Flights from Orlando (MCO) to Washington (WAS)
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Flights from Calgary (YYC) to Washington (WAS)
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Flights from Kamloops (YKA) to Washington (WAS)
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Flights from Winnipeg (YWG) to Washington (WAS)
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Flights from Paris (PAR) to Washington (WAS)
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Flights from Binghamton (BGM) to Washington (WAS)
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Flights from Santa Monica (SMO) to Washington (WAS)
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Flights from Dublin (DUB) to Washington (WAS)
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Flights from Medicine Hat (YXH) to Washington (WAS)
Standard Link for Flights from Medicine Hat (YXH) to Washington (WAS)
Flights from Rome (FCO) to Washington (WAS)
Standard Link for Flights from Rome (FCO) to Washington (WAS)
Flights from Toronto (YYZ) to Washington (WAS)
Standard Link for Flights from Toronto (YYZ) to Washington (WAS)
Flights from Sacramento (SMF) to Washington (WAS)
Standard Link for Flights from Sacramento (SMF) to Washington (WAS)
Flights from Buffalo (BUF) to Baltimore (BWI)
Standard Link for Flights from Buffalo (BUF) to Baltimore (BWI)
Flights from Ontario Intl. Airport (ONT) to Washington (WAS)
Standard Link for Flights from Ontario Intl. Airport (ONT) to Washington (WAS)
Flights from Montego Bay (MBJ) to Washington (WAS)
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Flights from Dubai (DXB) to Washington (WAS)
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Flights from St. Leonard (YSL) to Washington (WAS)
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Flights from Red Deer (YQF) to Washington (WAS)
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Flights from Johannesburg (JNB) to Washington (WAS)
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Flights from San Francisco (SFO) to Washington (WAS)
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Flights from Springfield (SGF) to Washington (WAS)
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Flights from Dallas (DFW) to Washington (WAS)
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Flights from Yuma (YUM) to Washington (WAS)
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Flights from Artesia (ATS) to Washington (WAS)
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Flights from Charlotte (CLT) to Washington (WAS)
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Flights from Igloolik (YGT) to Washington (WAS)
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Flights from Bielefeld (BFE) to Washington (WAS)
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Flights from Vancouver (YVR) to Washington (WAS)
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Flights from Wabush (YWK) to Washington (WAS)
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Flights from San Antonio (SAT) to Washington (WAS)
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Flights from Hyderabad (HYD) to Washington (WAS)
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Flights from Hemet (HMT) to Washington (WAS)
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Flights from Gadsden (GAD) to Washington (WAS)
Standard Link for Flights from Gadsden (GAD) to Washington (WAS)
Flights from Winnipeg (YWG) to Baltimore (BWI)
Standard Link for Flights from Winnipeg (YWG) to Baltimore (BWI)
Flights from Seoul (ICN) to Washington (WAS)
Standard Link for Flights from Seoul (ICN) to Washington (WAS)
Flights from Detroit (DTT) to Washington (WAS)
Standard Link for Flights from Detroit (DTT) to Washington (WAS)
Flights from Indianapolis (IND) to Washington (WAS)
Standard Link for Flights from Indianapolis (IND) to Washington (WAS)
Flights from Raleigh (RDU) to Washington (WAS)
Standard Link for Flights from Raleigh (RDU) to Washington (WAS)
Flights from Kokomo (OKK) to Washington (WAS)
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Flights from Horsham (HSM) to Washington (WAS)
Standard Link for Flights from Horsham (HSM) to Washington (WAS)
Flights from Halifax (YHZ) to Washington (WAS)
Standard Link for Flights from Halifax (YHZ) to Washington (WAS)
Flights from Montreal (YUL) to Baltimore (BWI)
Standard Link for Flights from Montreal (YUL) to Baltimore (BWI)
Flights from Regina (YQR) to Washington (WAS)
Standard Link for Flights from Regina (YQR) to Washington (WAS)
Flights from Long Beach (LGB) to Washington (WAS)
Standard Link for Flights from Long Beach (LGB) to Washington (WAS)
Flights from Comox (YQQ) to Washington (WAS)
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Flights from Istanbul (IST) to Washington (WAS)
Standard Link for Flights from Istanbul (IST) to Washington (WAS)
Flights from Champaign (CMI) to Washington (WAS)
Standard Link for Flights from Champaign (CMI) to Washington (WAS)

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CA $168 Cheap Flights from St. Louis (STL) to Washington (WAS)

Popular airlines from Lambert-St. Louis International Airport (STL) to Washington

Be in the know

Book smarter

Earn twice

Cheap Flights from St. Louis to Washington (STL-WAS)

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

October is typically the cheapest month to flyOctober is typically the cheapest month to fly

Travel information

Explore a world of travel with Expedia

October is typically the cheapest month to fly