$66 Cheap flight deals from St. Louis (STL) to Washington (WAS)

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This Weekend's Flight Deals from St. Louis to Washington

This weekend's flight prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun, Sep 21 - Mon, Sep 29
STL
Lambert-St. Louis Intl.
BWI
Baltimore Washington Intl. Thurgood Marshall
$181 Roundtrip, found 3 days ago
$181
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Sun, Sep 21 from Lambert-St. Louis Intl. to Baltimore Washington Intl. Thurgood Marshall, returning Mon, Sep 29, priced at $181 found 3 days ago
Fri, Sep 19 - Mon, Sep 22
STL
Lambert-St. Louis Intl.
IAD
Washington Dulles Intl.
$198 Roundtrip, found 2 days ago
$198
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Fri, Sep 19 from Lambert-St. Louis Intl. to Washington Dulles Intl., returning Mon, Sep 22, priced at $198 found 2 days ago
Sun, Sep 21 - Tue, Sep 23
STL
Lambert-St. Louis Intl.
DCA
Ronald Reagan Washington National
$545 Roundtrip, found 6 days ago
$545
Roundtrip
found 6 days ago
Select American Airlines flight, departing Sun, Sep 21 from Lambert-St. Louis Intl. to Ronald Reagan Washington National, returning Tue, Sep 23, priced at $545 found 6 days ago

Airfares from $66 One Way, $131 Round Trip from St. Louis to Washington

Prices starting at $131 for return flights and $66 for one-way flights to Washington were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Feb 9 - Fri, Feb 20
STL
St. Louis
DCA
Washington
$131 Roundtrip, found 13 hours ago
$131
Roundtrip
found 13 hours ago
Select American Airlines flight, departing Mon, Feb 9 from St. Louis to Washington, returning Fri, Feb 20, priced at $131 found 13 hours ago
Tue, Oct 14 - Tue, Oct 21
STL
St. Louis
DCA
Washington
$133 Roundtrip, found 1 day ago
$133
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, Oct 14 from St. Louis to Washington, returning Tue, Oct 21, priced at $133 found 1 day ago
Sat, Dec 13 - Wed, Dec 17
STL
St. Louis
DCA
Washington
$133 Roundtrip, found 3 days ago
$133
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Sat, Dec 13 from St. Louis to Washington, returning Wed, Dec 17, priced at $133 found 3 days ago
Sat, Dec 13 - Wed, Dec 17
STL
St. Louis
DCA
Washington
$143 Roundtrip, found 3 days ago
$143
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Sat, Dec 13 from St. Louis to Washington, returning Wed, Dec 17, priced at $143 found 3 days ago
Fri, Nov 14 - Tue, Nov 18
STL
St. Louis
DCA
Washington
$149 Roundtrip, found 2 days ago
$149
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Fri, Nov 14 from St. Louis to Washington, returning Tue, Nov 18, priced at $149 found 2 days ago

Washington economy flight packages

Price found within the past 48 hours. Click for updated prices.
Hyatt Place Baltimore/Owings Mills
3.0-star property

Hyatt Place Baltimore/Owings Mills

8.2/10 Very Good! (1,105 reviews)

Oct 25 - Oct 27

2 night stay

St. Louis (STL) to Baltimore (BWI)

Delta • Non-stop roundtrip • Coach
Price was $485, price is now $361 per person
$361
per person
found 23 hours ago
If you like cigarette smoke this is the place

Reviewed on Aug 10, 2025

Placemakr Dupont Circle
4.0-star property

Placemakr Dupont Circle

8.4/10 Very Good! (695 reviews)

Oct 25 - Oct 27

2 night stay

St. Louis (STL) to Washington (WAS)

Delta • Non-stop roundtrip • Coach
Price was $541, price is now $469 per person
$469
per person
found 23 hours ago
Staff went to the wall to make my 3 night stay excellent. Warm, friendly, helpful in every way.

Reviewed on Sep 13, 2025

Lord Baltimore Hotel
3.5-star property

Lord Baltimore Hotel

8.2/10 Very Good! (2,199 reviews)

Oct 25 - Oct 27

2 night stay

St. Louis (STL) to Baltimore (BWI)

Delta • Non-stop roundtrip • Coach
Price was $477, price is now $414 per person
$414
per person
found 23 hours ago
The rooms are a bit outdated...bathrooms being more so. Otherwise great hotel for a one night stay for a concert.

Reviewed on Sep 7, 2025

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More About Flying To Washington from St. Louis

Route Information for Flights from St. Louis to Washington

Origin Airport IATA Code
STL
Destination Airport IATA Code
WAS
Distance
716 mi
Direct Flight Airlines
American Airlines, Southwest Airlines
Earliest Flight Arrival
2:03PM UTC
Latest Flight Arrival
3:25AM UTC

Fly from St Louis to Washington DC

Anyone living in St Louis interested in seeing the sights in the nation's capital can fly to Washington DC in less than two hours. Several flights depart daily from Lambert-Saint Louis International Airport (STL), and the plentiful long-term parking makes it convenient to get away for a while.

Attractions

DC is filled with museums that are free to the public, including the American Art Museum, the American History Museum and the Air and Space Museum, all of which are part of the prestigious group of Smithsonian museums. They're concentrated along the National Mall, a vast stretch of land that has the White House on one end and the Lincoln Memorial on the other. A number of other memorials are very moving, including the National World War II and the Vietnam Veterans Memorials. If you'd like to relax your feet, you can grab a meal or a drink at one of the trendy restaurants or bars in the neighborhoods of Adams Morgan, Georgetown or Dupont Circle.

Hints and tips

The region is served by Washington Dulles International Airport (IAD) and Ronald Reagan National Airport (DCA). The Metro is clean and convenient, and it saves you from navigating busy streets like Connecticut and Pennsylvania Avenues by car. Many visitors come in March and April to see the cherry blossoms and take part in the Cherry Blossom Festival, and they're usually greeted with pleasant temperatures in the low 60s during the day.

Frequently asked questions

Are there non-stop flights from St. Louis to Washington?
There are a couple of airlines that offer direct flights from Lambert Field to National Airport. Book your seat now with American Airlines or Southwest Airlines.
What is the shortest flight from St. Louis to Washington?
The journey from St. Louis to Washington can be as fast as 2 hours and 35 minutes. With an easy flight time like this, why not organize an impulsive getaway?
What airlines fly from St. Louis to Washington most frequently?
American Airlines (AA) offers 86 flights every month between Lambert-St. Louis Intl. Airport (STL) to DCA. Your next great adventure is just clicks away. Also research the great deals from Southwest Airlines (WN). Offering 60 monthly flights between St. Louis and Washington, they make the journey just as enjoyable as the destination.
What is the cheapest day of the week to fly?
Consider flying out early in the week to save on your airfare. Orbitz data from 2021 shows that Monday is the cheapest day to depart, followed by Tuesday. Saturday showed the highest average ticket prices likely because many travelers prefer to start their vacation on a weekend.
What is the cheapest month to fly?
We won't keep you guessing, according to Orbitz data from 2021, the cheapest month to fly is February. Perfect for those who need a weekend getaway, or just a break from it all in the shortest month of the year. Be aware that the most expensive time to fly is during the height of summer in July, and in the holiday month of December.*According to flight demand on Orbitz.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.

Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.

Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.