Cheap Flight Tickets from Washington (DCA) to St Louis (STL), Starting at $124

Good to Know: Cheapest and Fastest DCA - STL Flights

Useful information for finding best airline tickets from Ronald Reagan Washington National to Lambert St Louis International on your next trip.

Cheapest Round Trip Flight

$438

DL Delta Airlines • 1 stop • 10h 35m

Jun 25 – Jul 02

The cheapest round trip flight from Washington to St Louis (DCA-STL-DCA) is currently $438

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Cheapest One way Flight

$124

WN Southwest Airlines • nonstop • 3h 30m

Jun 21

The cheapest one way flight from Washington to St Louis (DCA-STL) is currently $124

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Cheapest Direct Flight

$308

WN Southwest Airlines • nonstop • 3h 35m

Jun 22

The cheapest nonstop flight from Washington to St Louis (DCA-STL) is currently $308

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Fastest Flight

3h 30m

The fastest nonstop flight from Washington to St Louis (DCA-STL) takes 3h 30m

Latest Flight Deals from Washington (DCA) to St Louis (STL)

Compare and book low fare round-trip air tickets from Washington to St Louis. Ideal for travelers with confirmed return itineraries.

Jun 25 - Jul 02, Economy
DL
Washington → St Louis
10h 35m
6:59 AM - 12:34 PM • 1 stop
DL
Washington → St Louis
10h 9m
1:39 PM - 8:48 PM • 1 stop
$438
Delta Airlines
Jun 25 - Jul 02, Economy
DL
Washington → St Louis
17h 10m
6:20 AM - 3:50 PM • 1 stop
DL
Washington → St Louis
10h 9m
1:39 PM - 8:48 PM • 1 stop
$481
Delta Airlines
Jun 25 - Jul 02, Economy
WN
Washington → St Louis
3h 35m
2:35 PM - 3:50 PM • nonstop
WN
Washington → St Louis
2h 35m
8:30 AM - 11:25 AM • nonstop
$521
Southwest Airlines
Jun 25 - Jul 02, Economy
WN
Washington → St Louis
3h 35m
2:35 PM - 3:50 PM • nonstop
WN
Washington → St Louis
7h 10m
5:40 AM - 11:10 AM • 1 stop
$531
Southwest Airlines
Jun 25 - Jul 02, Economy
WN
Washington → St Louis
3h 30m
8:00 AM - 9:10 AM • nonstop
WN
Washington → St Louis
6h 45m
9:55 AM - 3:00 PM • 1 stop
$531
Southwest Airlines
Jun 25 - Jul 02, Economy
WN
Washington → St Louis
3h 35m
12:00 PM - 1:15 PM • nonstop
WN
Washington → St Louis
7h 20m
5:35 PM - 11:15 PM • 1 stop
$531
Southwest Airlines

Fly from Washington to St Louis with the Best Airfare Deals on FareLeaders

Looking for a cheap last-minute deal or the best round-trip flight from Washington to St Louis? Find the biggest savings on one-way and round-trip tickets right here.

FAQs on Washington to St Louis Flights

What are the airports in Washington?
IAD,BWI,DCA
What’s the most popular airline flying from DCA to STL?
The most popular airline flying from Washington to St Louis are
Can I fly from DCA to STL non-stop?
Yes, you can fly DCA to STL non-stop on
Which airlines fly nonstop between Washington and St Louis?
The non-stop flights between Washington and St Louis are .
What’s the earliest departure time from DCA to STL Airport?
The earliest flight leaves DCA at 6:05 am and lands in STL - Lambert St Louis International
What are the airports in St Louis?
STL
Can I make changes to my Washington to St Louis flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from DCA to STL?
Read the fare rules of the Washington to St Louis air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Washington and St Louis?
operate flights between Washington and St Louis
How long does a flight from Washington to St Louis take?
It takes approximately 2 hour to fly non-stop from DCA to STL, which is 719.05 miles by air.
Which airlines provide the cheapest flights from Washington (DCA) to St Louis (STL) ?
In the past couple of days, the cheapest tickets to STL from DCA were found on DL : USD 267
Do I need a passport to fly between DCA and STL?
No
What’s the latest departure time from DCA to STL ?
The last flight leaves DCA at 6:40 pm

Essential Information for Booking Flights from Washington (DCA) - AI Insights

What's the cheapest airline from dca to stl?
You can find affordable flights from Ronald Reagan Washington National Airport (DCA) to Lambert St Louis International Airport (STL) on Southwest Airlines. For a round-trip economy flight, you can expect low fares. Booking in advance is recommended as it often leads to savings. You can search for the cheapest airfares on fareleaders.com.
What's the popular airline to fly from dca to stl?
Southwest Airlines offers flights from Ronald Reagan Washington National Airport (DCA) to Lambert St Louis International Airport (STL), providing a convenient option for travelers. The airline operates direct flights, making it an ideal choice for those looking for a hassle-free journey. With Southwest Airlines, you can enjoy affordable airfares and flexible booking options.
What's the cheapest day of the week to fly from dca to stl?
The cheapest day to fly from Ronald Reagan Washington National Airport (DCA) to Lambert St Louis International Airport (STL) is Thursday. Flying on off-peak days can help you save on airfares, making it a budget-friendly option for your round-trip journey.
What's the cheapest month to fly from dca to stl?
The cheapest month to fly from Ronald Reagan Washington National Airport (DCA) to Lambert St Louis International Airport (STL) is November. This is based on historical airfare data, which suggests that flying during this time can result in budget-friendly flights. For a round-trip economy flight, consider booking your ticket in advance to secure the best rates.
Which airline/airlines fly from dca to stl?
The airlines that fly from Ronald Reagan Washington National Airport (DCA) to Lambert St Louis International Airport (STL) include Southwest Airlines, Delta Airlines, Aeromexico, United Airlines, Frontier Airlines, JetBlue Airways, American Airlines, and Alaska Airlines. You can find the most up-to-date flight information on fareleaders.com.
What is the best way to book an airfare for my Milwaukee trip?
You can easily find and book affordable flights on fareleaders.com, a leading airfare comparison platform. Simply enter your travel dates and destinations to get access to our curated list of cheap flights.
How far in advance should I book my flight?
It's recommended to book your flight at least 48 days in advance for the best deals on Southwest Airlines (WN) flights, as mentioned in your trip details. However, some airlines may offer discounts if you book earlier.
Can I find cheaper flights on your website during July weekend?
Yes, fareleaders.com is a great resource to find affordable flights, including those available during the July weekend. Our platform aggregates airfare data from various sources to provide users with the best options.
What are the different types of airline tickets available?
There are several types of airline tickets, including Economy (Unknown cabin class), which you can book on fareleaders.com. Each type offers varying levels of comfort and amenities at different price points.
How can I ensure a smooth travel experience with Busco agency?
Unfortunately, we couldn't find any information about Busco agency being a legitimate airline or travel partner. However, our platform provides valuable resources to help you plan your trip and minimize potential issues.
Do you offer any discounts or promotions on airfares?
Yes, fareleaders.com often features exclusive deals and promo codes for cheap flights. Be sure to check our website regularly for the latest offers and sign up for our newsletter to stay informed.

Washington (DCA) to St Louis (STL): Airport Information

Origin Airport Ronald Reagan Washington National , Washington, US
Destination Airport Lambert St Louis International , St Louis, US
Distance 719 miles

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