$90 Cheap flight deals from Washington (WAS) to St. Louis (STL)

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

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.

Fri, May 2 - Sat, May 10
DCA
Ronald Reagan Washington National
STL
Lambert-St. Louis Intl.
$201 Roundtrip, found 4 days ago
$201
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Fri, May 2 from Ronald Reagan Washington National to Lambert-St. Louis Intl., returning Sat, May 10, priced at $201 found 4 days ago
Fri, May 2 - Wed, May 7
IAD
Washington Dulles Intl.
STL
Lambert-St. Louis Intl.
$201 Roundtrip, found 3 days ago
$201
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Fri, May 2 from Washington Dulles Intl. to Lambert-St. Louis Intl., returning Wed, May 7, priced at $201 found 3 days ago
Sun, May 4 - Sun, May 11
BWI
Baltimore Washington Intl. Thurgood Marshall
STL
Lambert-St. Louis Intl.
$330 Roundtrip, found 1 day ago
$330
Roundtrip
found 1 day ago
Select Delta flight, departing Sun, May 4 from Baltimore Washington Intl. Thurgood Marshall to Lambert-St. Louis Intl., returning Sun, May 11, priced at $330 found 1 day ago

Airfares from $90 One Way, $188 Round Trip from Washington to St. Louis

Prices starting at $188 for return flights and $90 for one-way flights to St. Louis were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, May 14 - Wed, May 21
BWI
Baltimore
STL
St. Louis
$188 Roundtrip, found 6 days ago
$188
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Wed, May 14 from Baltimore to St. Louis, returning Wed, May 21, priced at $188 found 6 days ago
Sat, Apr 26 - Wed, Apr 30
IAD
Washington
STL
St. Louis
$191 Roundtrip, found 3 days ago
$191
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Sat, Apr 26 from Washington to St. Louis, returning Wed, Apr 30, priced at $191 found 3 days ago
Tue, May 6 - Tue, May 13
BWI
Baltimore
STL
St. Louis
$191 Roundtrip, found 4 days ago
$191
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Tue, May 6 from Baltimore to St. Louis, returning Tue, May 13, priced at $191 found 4 days ago
Tue, May 20 - Sat, May 24
DCA
Washington
STL
St. Louis
$191 Roundtrip, found 1 day ago
$191
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Tue, May 20 from Washington to St. Louis, returning Sat, May 24, priced at $191 found 1 day ago
Sat, May 24 - Fri, May 30
IAD
Washington
STL
St. Louis
$202 Roundtrip, found 6 days ago
$202
Roundtrip
found 6 days ago
Select United flight, departing Sat, May 24 from Washington to St. Louis, returning Fri, May 30, priced at $202 found 6 days ago

St. Louis economy flight packages

Price found within the past 48 hours. Click for updated prices.
The Wildwood Hotel
3.5-star property

The Wildwood Hotel

9/10 Wonderful! (1,464 reviews)

May 28 - May 30

2 night stay

Baltimore (BWI) to St. Louis (STL)

Southwest Airlines • Non-stop roundtrip • Coach
per person
found 1 day ago
The staff at this property were incredible. Everyone we talked to was friendly and helpful. I even left something of value behind and they had it shipped to me and I am ever so grateful. The room and the amenities were great and the hotel is in an area that feels safe and has a walking path nearby and also shopping and dining. We would definitely stay here again.

Reviewed on Apr 21, 2025

Ballpark Heights Apartments By Barsala
4.0-star property

Ballpark Heights Apartments By Barsala

No reviews

Jun 15 - Jun 21

6 night stay

Washington (IAD) to St. Louis (STL)

Delta • Non-stop roundtrip • Coach
Save 100% on your flight
per person
found 1 day ago
White House at Grand Central
4.0-star property

White House at Grand Central

8.6/10 Excellent! (99 reviews)

Jun 15 - Jun 21

6 night stay

Washington (IAD) to St. Louis (STL)

Delta • Non-stop roundtrip • Coach
per person
found 1 day ago
Beautiful old building with lots of character. Well supplied.

Reviewed on Sep 17, 2023

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More About Flying To St. Louis from Washington

Route Information for Flights from Washington to St. Louis

Origin Airport IATA Code
WAS
Destination Airport IATA Code
STL
Distance
716 mi
Direct Flight Airlines
American Airlines, Southwest Airlines
Earliest Flight Arrival
2:10PM UTC
Latest Flight Arrival
3:25AM UTC

Cheap Flights from Washington DC to St Louis

The Best DC Airports

Before you call airlines looking for flights from Washington, DC, you should check with Orbitz.com. The two major airports in DC are Washington Dulles International Airport and Ronald Reagan Washington National Airport. Alaska Airlines, US Airways, and Frontier Airlines handle domestic flights from Ronald Reagan, while Virgin America, ExpressJet Airlines, and Colgan Air operate out of Washington Dulles. Ronald Reagan is only three miles from the downtown area, and Washington Dulles is 26 miles from downtown.

Long-Term Parking Options

The five parking lots at Ronald Reagan offer daily and hourly parking rates, and the airport charges $20 per day for parking in the long-term lots. The economy lot only charges $12 per day, but this lot is open and uncovered. Washington Dulles has two long-term parking lots that charge $17 per day and one economy lot that charges $10 per day. For $30, you can use valet parking.

Public Transportation Choices

The Metrorail and Metrobus make at least one stop at each airport every day. The stops are clearly marked around the city, and you can find maps that help you find the correct line. Taxis are not as low cost as the public transportation options because the drivers charge a pickup fee, baggage fee, fee per mile, and a fee for any time that the driver must wait.

Places to Eat

Both airports offer a range of dining options. Washington Dulles is home to Dulles to Go, Five Guys, Subway, and Wendy's, while Ronald Reagan has Dunkin' Donuts, Euro Cafe, and Jerry's Subs & Pizza. Once you have something to eat, you can browse through the sales at some of the shops surrounding the restaurants. If you want to enjoy your vacation, use Orbitz.com to look for flights from Washington DC.

Lambert-St. Louis International Airport

Allow Orbitz.com to help you book flights to St. Louis. Lambert-St.Louis International Airport is located 10 miles northwest of St. Louis. Over 13 million passengers pass through the airport each year. It is the largest airport in the state of Missouri and services 255 daily departures to over 90 cities, domestically and internationally. Southwest Airlines is based out of Lambert, and Air Canada, Alaska Airlines, Cape Air, Delta and American Airlines all have major hubs at Lambert. You can use Orbitz.com to book bargain tickets on your next trip to the St. Louis area.

St. Louis International Airport Transportation

St. Louis International Airport offers a variety of transportation services for the busy traveler. Shuttle services, rental cars, and public transportation are available at the airport. Go Best Express Airport Shuttle is a popular shuttle service for group transportation. One-way fares start at $17. The MetroLink is St. Louis' rail system and operates 37 stations throughout the city. One-way fares cost $2.

St. Louis Weather

St. Louis has distinct seasons. Summers are hot, and temperatures can get as high as 90 degrees F. Spring is usually a rainy season for St. Louis, so it is best to pack an umbrella for your trip during March, April and May. Fall is usually mild, with temperatures averaging 57 degrees F. Winters can be freezing, with temperature falling to 20 degrees F. Bring a warm coat and boots during winter trips to St. Louis.

Popular Attractions in St. Louis

St. Louis offers a variety of attractions for visitors. Some popular attractions include the famous Gateway Arch, Six Flags of St. Louis, the Saint Louis Zoo and Forest Park. St. Louis is also home to several theaters, such as the Ferrara Theatre, Fox Theatre, and Grand Center. Some popular museums include the St. Louis Children's Museum and the Beall Mansion Museums. Book flights to St. Louis with the help of Orbitz.com to visit these popular attractions.

Frequently asked questions

Are there non-stop flights from Washington to St. Louis?
Yes, you’ll be delighted to hear that you can fly straight from Washington, DC (DCA-Ronald Reagan Washington National) to Lambert Field. Nonstop flights are offered by American Airlines and Southwest Airlines.
What is the shortest flight from Washington to St. Louis?
The trip from Washington to St. Louis can be as quick as 2 hours and 45 minutes. With a short and sweet flight time like this, why not organize a spontaneous getaway?
What airlines fly from Washington to St. Louis most frequently?
American Airlines (AA) is one of the airlines with the most flights from National Airport to Lambert Field. It offers 86 services on this route every month. Taking off on a vacation is one of life’s greatest pleasures, and this airline will get you where you need to go. Alternatively, secure your favorite aisle (or window) seat with Southwest Airlines (WN). You’ll have 60 monthly flights between Washington and St. Louis to select from with this company.
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.