$85 Cheap Flights from Washington (DCA) to St. Louis (STL)

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

Prices were available within the past 7 days and start at $85 for one-way flights and $152 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Tue, Jun 4 - Wed, Jun 12
DCA
Washington
STL
St. Louis
$152 Roundtrip, found 6 days ago
$152
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Tue, Jun 4 from Washington to St. Louis, returning Wed, Jun 12, priced at $152 found 6 days ago
American Airlines
Wed, Aug 28 - Tue, Sep 3
DCA
Washington
STL
St. Louis
$169 Roundtrip, found 11 hours ago
$169
Roundtrip
found 11 hours ago
Select American Airlines flight, departing Wed, Aug 28 from Washington to St. Louis, returning Tue, Sep 3, priced at $169 found 11 hours ago
Frontier Airlines
Tue, Jun 18 - Sun, Jun 23
DCA
Washington
STL
St. Louis
$178 Roundtrip, found 1 day ago
$178
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Tue, Jun 18 from Washington to St. Louis, returning Sun, Jun 23, priced at $178 found 1 day ago
American Airlines
Wed, Jul 3 - Tue, Jul 9
DCA
Washington
STL
St. Louis
$179 Roundtrip, found 7 hours ago
$179
Roundtrip
found 7 hours ago
Select American Airlines flight, departing Wed, Jul 3 from Washington to St. Louis, returning Tue, Jul 9, priced at $179 found 7 hours ago
Frontier Airlines
Tue, Jun 18 - Tue, Jun 25
DCA
Washington
STL
St. Louis
$184 Roundtrip, found 5 days ago
$184
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Tue, Jun 18 from Washington to St. Louis, returning Tue, Jun 25, priced at $184 found 5 days ago
Delta
Mon, Jul 1 - Tue, Jul 2
DCA
Washington
STL
St. Louis
$188 Roundtrip, found 5 days ago
$188
Roundtrip
found 5 days ago
Select Delta flight, departing Mon, Jul 1 from Washington to St. Louis, returning Tue, Jul 2, priced at $188 found 5 days ago
Delta
Tue, Aug 20 - Wed, Sep 4
DCA
Washington
STL
St. Louis
$188 Roundtrip, found 5 hours ago
$188
Roundtrip
found 5 hours ago
Select Delta flight, departing Tue, Aug 20 from Washington to St. Louis, returning Wed, Sep 4, priced at $188 found 5 hours ago
American Airlines
Thu, Jun 13 - Tue, Jun 18
DCA
Washington
STL
St. Louis
$189 Roundtrip, found 6 hours ago
$189
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Thu, Jun 13 from Washington to St. Louis, returning Tue, Jun 18, priced at $189 found 6 hours ago
United
Wed, Aug 21 - Sat, Aug 24
DCA
Washington
STL
St. Louis
$192 Roundtrip, found 10 hours ago
$192
Roundtrip
found 10 hours ago
Select United flight, departing Wed, Aug 21 from Washington to St. Louis, returning Sat, Aug 24, priced at $192 found 10 hours ago
Frontier Airlines
Thu, Jun 6 - Fri, Jun 7
DCA
Washington
STL
St. Louis
$194 Roundtrip, found 6 days ago
$194
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Thu, Jun 6 from Washington to St. Louis, returning Fri, Jun 7, priced at $194 found 6 days ago
Flights from Washington (DCA) to St. Louis (STL)
Origin airport
Ronald Reagan Washington National
Destination airport
Lambert-St. Louis Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, United
Roundtrip price
$152
Distance
716 mi
Average flight time
1 hour 34 mins

Washington to St. Louis Flights

Whether you’re looking for a grand adventure or just want to get away for a last-minute break, flights from Washington to St. Louis offer the perfect respite. Not only does exploring St. Louis provide the chance to make some magical memories, dip into delectable dishes, and tour the local landmarks, but the cheap airfare means you won’t bust your budget. So no matter whether your ideal itinerary involves flying one way, non-stop, or round trip, you’re bound to find flights that match your schedule on Expedia, and at prices that won’t shock your wallet.

Bagging a cheap flight from Washington to St. Louis may mean more dollars to spend on for one-of-a-kind souvenirs when you arrive, but it doesn’t mean you have to skimp on your travel experience, as Expedia offers a sizzling selection of cheap airlines that’ll put you in your happy place on their planes, whether that’s getting lost in a hair-raising airport thriller, dreaming on the passing landscape over a glass of bubbly, or jotting down your vacation bucket list at 38,000 feet. There’s also bound to be plenty of opportunities to snap a few photos of the high life that will make your friends green with envy. After all, enjoying the journey is part of the fun.

With so many affordable flights and so many wonderful adventures awaiting you, there’s no reason to put off booking a fantastic flight from DCA to STL today. So don’t leave it to the last minute to make your dream trip a reality: pack your bags with your go-to travel accessories, put together your list of must-see attractions and can’t-miss activities, and get ready to broaden your horizons – with Expedia, the wonders of St. Louis are only a plane trip away. Book your travel arrangements with us today!

If you would like to book flights to St. Louis more flexibly many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to St. Louis is $85 now!

Frequently asked questions

How much is a one-way flight from DCA to Lambert Field?
Prepare to score a bargain, because Washington flights to St. Louis start from $80. This is based on the cheapest fare found on Expedia for this journey departing in the next three months. This airfare is for an Frontier Airlines flight, leaving from National Airport on June 11 2024 and landing at Lambert Field. The price of this flight was last updated on May 21 2024 and has not changed since.
How long does it take to fly from National Airport to St. Louis Lambert International Airport?
Book your trip with American Airlines and you can expect to be cruising the skies for about 2 hours and 20 minutes. This top carrier has a direct flight that departs at 7:50PM from National Airport and comes in to land at St. Louis Lambert International Airport at 9:10PM. Expedia has flight deals that’ll get you soaring, so check out what’s on offer on this route today.
Is it cheaper to buy a plane ticket from DCA to STL last minute?
When it comes to booking your flights, being prepared pays dividends. While you may be able to find a deal on a Ronald Reagan Washington National Airport (DCA) to St. Louis Lambert International Airport flight at the last minute, tickets usually don’t get cheaper as the departure date nears. Based on flight pricing and demand studies in 2022, we have found that the sweet spot to lock in a domestic flight is between 28 – 35 days in advance. For international flights it’s between three and four months.
What is the cheapest airline flying from National Airport to STL in the next 90 days?
Based on airfares found on Expedia with a departure date within the next 90 days, Frontier Airlines is the cheapest airline flying from Washington to St. Louis. The fare for this journey starts at $80. This flight departs from National Airport on June 11 2024 and touches down at Lambert-St. Louis Intl. Airport (STL). The price was last updated on May 21 2024 and has not changed since.
What's the cheapest price for a flight from DCA to STL next month?
With a one-way flight from Washington to St. Louis on sale for $80, you’ll have more money left in your wallet for fun stuff like sightseeing. This deal was found after looking at all available flights on Expedia within the next 30 days. This particular journey jets out from Ronald Reagan Washington National Airport (DCA) on June 11 2024, comes in to land at Lambert Field and is operated by Frontier Airlines. Pricing information was last updated on May 21 2024 and has not changed since.
Can I find cheap nonstop flights from National Airport to Lambert Field in the next three months?
The cheapest price we’ve found for a roundtrip nonstop flight from Washington to St. Louis within the next 90 days is $189. This price was found after looking at all available flights on Expedia with a departure date in the next three months. This airfare is for a flight via American Airlines jetting off from National Airport on June 11 2024 and touching down at Lambert-St. Louis Intl. Airport (STL), with a return flight on June 18 2024. Pricing details were updated on May 21 2024.Use our handy filters to search for nonstop cheap flights from National Airport to Lambert Field. Just click “Nonstop” under “Filter by” after your search results appear. Open to flying on a different date? You can also try the “Flexible dates” dropdown menu to view prices for nearby dates. Finding a fare that’s a match for your budget and schedule couldn’t be simpler.
What airports do you fly into for Central United States from Arlington?
To travel from Arlington to Central United States, you can jet into Lambert-St. Louis Intl. Airport (STL), Spirit of St. Louis Airport (SUS) or St. Louis Downtown Airport (CPS). Touch down at Lambert-St. Louis Intl. Airport (STL) and you’ll be approximately 180 mi east of the heart of Central United States. Whichever terminal works with your plans, Expedia will help you nab an unbeatable flight deal.
What are the most popular departure times for flights from DCA to Lambert Field?
Between 3:00 PM - 4:00 PM is when you’ll find the most American Airlines flights going from National Airport to Lambert-St. Louis Intl. Airport (STL). Our useful tip? Book a trip that departs earlier in the day. With air traffic yet to build up, your odds of jumping on a delay-free flight are better.
Can I change the date of my flight from National Airport to Lambert-St. Louis Intl. Airport (STL)?
Sometimes life gets in the way of plans, so Expedia is here to help make amending your flight as easy as possible. First, find your Ronald Reagan Washington National Airport (DCA) to Lambert-St. Louis Intl. Airport (STL) itinerary through the Expedia Trips portal and read the ticket rules regarding changes. If you booked your fare in the last 24 hours, some carriers allow you to cancel at no cost and book new flights. If you booked your fare more than 24 hours ago, contact us through our Customer Service portal so we can help you further.
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