Find Cheap Flights from St. Louis to Washington, D.C. (STL - WAS)

Flights overview

Useful information for finding cheap flights from St. Louis to Washington, D.C. and booking your next trip

Cheapest round-trip flights	$108	Frontier 1 stop 26 hr Thu, Nov 13 — Mon, Nov 17	The cheapest round-trip flight from St. Louis to Washington, D.C. is currently $108
Cheapest one-way flight	$54	Frontier 1 stop 5 hr Thu, Nov 13	The cheapest one-way flight from St. Louis to Washington, D.C. is currently $54
Cheapest nonstop flights	$199	American Nonstop 3 hr Thu, Nov 13 — Sun, Nov 16	The cheapest nonstop round-trip flight from St. Louis to Washington, D.C. is currently $199
Last-minute weekend getaway	$285	Frontier 1 stop 11 hr Thu, Oct 16 — Sun, Oct 19	The cheapest last-minute weekend getaway from St. Louis to Washington, D.C. is currently $285
Cheapest business class flights	$400	American 1 stop 5 hr Thu, Jan 8 — Sun, Jan 11	The cheapest business class round-trip flight from St. Louis to Washington, D.C. is currently $400

Fastest flight	1 hr 55 min	The fastest nonstop flight from St. Louis to Washington, D.C. takes 1 hr 55 min
Nonstop flights	Every day	There are direct flights on this route every day.

When is the cheapest time to fly?

The cheapest month to fly from St. Louis to Washington, D.C. is typically January. The most expensive month to fly is typically July.

January Cheapest	Typical prices: $125–265
July Most expensive	Typical prices: $210–275

Popular airlines from St. Louis to Washington, D.C.

Southwest

Nonstop

from $214

Typical price: $215–450

52 weekly nonstop flights

STL - BWI, DCA Every day

1814 weekly connecting flights

STL - BWI, DCA, IAD Every day
American

Nonstop

from $199

Typical price: $210–450

23 weekly nonstop flights

STL - DCA Every day

858 weekly connecting flights

STL - BWI, DCA, IAD Every day
United

Nonstop

from $219

Typical price: $225–465

11 weekly nonstop flights

STL - IAD Every day

987 weekly connecting flights

STL - BWI, DCA, IAD Every day
Delta

from $219

Typical price: $225–510

991 weekly connecting flights

STL - BWI, DCA, IAD Every day
Alaska

from $497

Typical price: $630–1,550

52 weekly connecting flights

STL - BWI, DCA, IAD Every day
Frontier

from $108

Typical price: $160–385

47 weekly connecting flights

STL - BWI, DCA, IAD Every day

Popular airports near St. Louis

St. Louis Lambert International Airport (STL)

St. Louis United States 22 min 12 mi
General Wayne A. Downing Peoria International Airport (PIA)

Peoria United States 2 hr 35 min 143 mi
Indianapolis International Airport (IND)

Indianapolis United States 3 hr 28 min 222 mi
Columbia Regional Airport (COU)

Columbia United States 2 hr 3 min 109 mi

Popular airports near Washington, D.C.

Ronald Reagan Washington National Airport (DCA)

Washington United States 18 min 4 mi
Dulles International Airport (IAD)

Washington United States 50 min 22 mi
Baltimore/Washington International Airport (BWI)

Baltimore United States 50 min 27 mi
Philadelphia International Airport (PHL)

Philadelphia United States 2 hr 20 min 116 mi

Frequently asked questions about flying from St. Louis to Washington, D.C.

When are the cheapest days to fly from St. Louis to Washington, D.C.?

The cheapest flights from St. Louis to Washington, D.C. are usually in January. Typical ticket prices in January range from $125 to $265.

Which airlines provide the cheapest flights from St. Louis to Washington, D.C.?

The cheapest round-trip flight from St. Louis to Washington, D.C. recently found on Google Flights was with Frontier from $108. The cheapest one-way flight was with Frontier from $54.

Some of the cheapest round-trip deals we found with different airlines:

The cheapest Southwest flight from St. Louis to Washington, D.C. is $214, flying from Jan 10 to Jan 11.
The cheapest American flight from St. Louis to Washington, D.C. is $199, flying from Nov 13 to Nov 16.
The cheapest United flight from St. Louis to Washington, D.C. is $219, flying from Dec 5 to Dec 7.
The cheapest Delta flight from St. Louis to Washington, D.C. is $219, flying from Nov 13 to Nov 16.
The cheapest Alaska flight from St. Louis to Washington, D.C. is $497, flying from Nov 15 to Nov 16.
The cheapest Frontier flight from St. Louis to Washington, D.C. is $108, flying from Nov 6 to Nov 10.

What are the cheapest flights from St. Louis to Washington, D.C.?

The cheapest round-trip flight from St. Louis to Washington, D.C. starts at $108 from Thu, Nov 13 to Mon, Nov 17. The cheapest one-way flight starts at $54 and departs on Thu, Nov 13.

How long does it take to fly from St. Louis to Washington, D.C.?

1 hr 55 min is the shortest flight time from St. Louis to Washington, D.C..

When should you fly to Washington, D.C., United States?

Mid-Mar–Jun is Washington DC's busiest time, with many people timing their visits to coincide with cherry blossom season (late Mar–mid Apr). Washington DC’s conference centers and hotels also bustle while Congress is in session (Sep–Nov and mid-Jan–Jun). Jul–Aug tend to be hot and humid, while snowfall can vary widely in winter. The city’s most popular events are the annual Cherry Blossom Festival in spring, the 4th of July celebration in summer, and the lighting of the National Christmas Tree in winter.

How do I find cheap dates to fly from St. Louis to Washington, D.C.?

It's easy to use Google Flights to find the cheapest days to fly from St. Louis to Washington, D.C..
Just click the Departure label near the top of the page to open the calendar. Choose a start date and a return date to see how the round-trip fare changes on those specific days.
Adjust the trip type to see one-way fares. The cheapest available flights are highlighted and easy to spot. Once you settle on dates, click the Search button to see flight options and book the deal.

You can also turn on price tracking to get alerts if the price changes for a route or flight.

What is the best airline to fly from St. Louis to Washington, D.C.?

What counts as the best airline for your flights from St. Louis to Washington, D.C. really depends on your individual needs. You may have a favorite carrier or a loyalty program you like, but price, convenience, and airports served also come into play. Flexibility and booking terms – Can you change flights if you want to stay longer or get a refund if you have to postpone your trip? – are also factors that help determine which airline is best to fly from St. Louis to Washington, D.C..

In terms of nonstop flights, Southwest is the most popular. Southwest offers 52 nonstop flights and 1,814 connecting flights per week. Southwest flies from St. Louis Lambert International Airport (STL) to Baltimore/Washington International Airport (BWI) , Ronald Reagan Washington National Airport (DCA) , Dulles International Airport (IAD) .

Other popular airlines flying from St. Louis to Washington, D.C. are:

American offers 23 nonstop flights and 858 connecting flights per week. American flies from St. Louis Lambert International Airport (STL) to Baltimore/Washington International Airport (BWI) , Ronald Reagan Washington National Airport (DCA) , Dulles International Airport (IAD) .
United offers 11 nonstop flights and 987 connecting flights per week. United flies from St. Louis Lambert International Airport (STL) to Baltimore/Washington International Airport (BWI) , Ronald Reagan Washington National Airport (DCA) , Dulles International Airport (IAD) .
Delta offers 991 connecting flights per week. Delta flies from St. Louis Lambert International Airport (STL) to Baltimore/Washington International Airport (BWI) , Ronald Reagan Washington National Airport (DCA) , Dulles International Airport (IAD) .
Alaska offers 52 connecting flights per week. Alaska flies from St. Louis Lambert International Airport (STL) to Baltimore/Washington International Airport (BWI) , Ronald Reagan Washington National Airport (DCA) , Dulles International Airport (IAD) .
Frontier offers 47 connecting flights per week. Frontier flies from St. Louis Lambert International Airport (STL) to Baltimore/Washington International Airport (BWI) , Ronald Reagan Washington National Airport (DCA) , Dulles International Airport (IAD) .

The number of connecting flights refers to distinct flights with at least one stop between St. Louis and Washington, D.C..

Which airlines provide the cheapest flights from St. Louis to Washington, D.C.?

The cheapest round-trip flight from St. Louis to Washington, D.C. recently found on Google Flights was with Frontier from $108. The cheapest one-way flight was with Frontier from $54.

Some of the cheapest round-trip deals we found with different airlines:

The cheapest Southwest flight from St. Louis to Washington, D.C. is $214, flying from Jan 10 to Jan 11.
The cheapest American flight from St. Louis to Washington, D.C. is $199, flying from Nov 13 to Nov 16.
The cheapest United flight from St. Louis to Washington, D.C. is $219, flying from Dec 5 to Dec 7.
The cheapest Delta flight from St. Louis to Washington, D.C. is $219, flying from Nov 13 to Nov 16.
The cheapest Alaska flight from St. Louis to Washington, D.C. is $497, flying from Nov 15 to Nov 16.
The cheapest Frontier flight from St. Louis to Washington, D.C. is $108, flying from Nov 6 to Nov 10.

Which airlines have direct flights from St. Louis to Washington, D.C.?

Southwest, American and United fly direct from St. Louis to Washington, D.C..

There are 52 Southwest direct flights from St. Louis to Washington, D.C. per week. Flights are available every day.
There are 23 American direct flights from St. Louis to Washington, D.C. per week. Flights are available every day.
There are 11 United direct flights from St. Louis to Washington, D.C. per week. Flights are available every day.

Use the Stops filter while searching for flights, to see only nonstop options in your results.

Which airline provides the cheapest last-minute getaway flight from St. Louis to Washington, D.C.?

The cheapest last-minute deal between St. Louis and Washington, D.C. at price $285 is offered by Frontier from Thu, Oct 16 to Sun, Oct 19.

Which airlines have direct flights from St. Louis to Washington, D.C.?

Southwest, American and United fly direct from St. Louis to Washington, D.C..

There are 52 Southwest direct flights from St. Louis to Washington, D.C. per week. Flights are available every day.
There are 23 American direct flights from St. Louis to Washington, D.C. per week. Flights are available every day.
There are 11 United direct flights from St. Louis to Washington, D.C. per week. Flights are available every day.

Use the Stops filter while searching for flights, to see only nonstop options in your results.

When are direct flights from St. Louis to Washington, D.C. available?

There are direct flights from St. Louis to Washington, D.C. on a daily basis.

What are the cheapest direct flights from St. Louis to Washington, D.C.?

The cheapest direct (nonstop) round-trip flights between St. Louis and Washington, D.C. start at $199 from Thu, Nov 13 to Sun, Nov 16 with American.

How can I find nonstop flights from St. Louis to Washington, D.C.?

It's easy to find nonstop flights with Google Flights! Once you've searched for flights from St. Louis to Washington, D.C., just select the nonstop flights only option in the 'Stops’ filter in the search form and view all available direct flights and their prices.

What are the cheapest business class flights from St. Louis to Washington, D.C.?

The cheapest business class round-trip flights between St. Louis and Washington, D.C. start at $400 from Thu, Jan 8 to Sun, Jan 11 with American.

What are the cheapest economy class flights from St. Louis to Washington, D.C.?

The cheapest economy class round-trip flights between St. Louis and Washington, D.C. start at $108 from Thu, Nov 13 to Mon, Nov 17.

How can I book business class trips from St. Louis to Washington, D.C.?

To book business class trips from St. Louis to Washington, D.C., look for the default Economy selection at the top, and change it to your desired cabin class such as Premium Economy, Business Class, or First Class. You can then select your departure and arrival dates, consider available options, and book your business travel.

You can also adjust the trip type to view one-way fares.

Are there any last-minute deals from St. Louis to Washington, D.C. next weekend?

The best last-minute getaway deal for the next weekend between St. Louis and Washington, D.C. starts at $285 from Thu, Oct 16 to Sun, Oct 19 with Frontier.

Which airline provides the cheapest last-minute getaway flight from St. Louis to Washington, D.C.?

The cheapest last-minute deal between St. Louis and Washington, D.C. at price $285 is offered by Frontier from Thu, Oct 16 to Sun, Oct 19.

How can I find last-minute flight deals from St. Louis to Washington, D.C.?

To find last-minute flight deals from St. Louis to Washington, D.C., start by entering the city names, select the desired departure and return dates, and hit the Search button to view flight options.

You can check for last-minute flights for the same day or adjust the trip type to see one-way fares.