₹8,538 Cheap Flights from Washington (DCA) to St. Louis (STL)

View ₹8,538 flight on Tue, 14 Oct 2025Opens in a new window

Popular airlines from Ronald Reagan National Airport (DCA) to Lambert-St. Louis International Airport (STL)

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

Prices were available within the past 7 days and start at ₹8,538 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Find the cheapest month to fly from Washington (DCA) to St. Louis (STL)

August is typically the cheapest month to fly

From ₹10,210 - ₹47,924 per traveller.

Graph displaying average flight prices per month

Flight from Washington to St. Louis route information
Origin airport
Ronald Reagan Washington National
Destination airport
Lambert-St. Louis Intl.
Distance
1147 km
Average flight time
2 hours 6 mins

Washington to St. Louis Flights

Sometimes you just need to get out of town or maybe you’re looking for a change of scenery. Regardless of the reason, a flight from Washington to St. Louis will do just the trick! Go on, plan to see all the famous landmarks and eat your weight in the local cuisine. Your trip is beckoning, so answer the call by packing your suitcase and filling your travel itinerary with exploring St. Louis.

Whether you’re flying for business or jet-setting on your personal time, you’ve come to the right place. Here at Expedia.com, we’ll pair you up with DCA to STL flights that won’t make your bank account wince. Ready to temporarily leave behind Washington for new horizons? Browse through our cheap airfare, and filter by flight times and dates until you find just what you had in mind. From flights without layovers to ones that arrive early in the morning, you’ll come across plane tickets that suit your travel preferences. You can even bundle your flight to STL with hotels and car rentals to score even bigger savings.

All set to hit the clouds? Book your travel arrangements with us today and have left-over money to put toward your travel outings and adventures.

Frequently asked questions

How much is a flight from Ronald Reagan Washington National Airport (DCA) to STL?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price advertised for a round-trip journey between Ronald Reagan Washington National Airport (DCA) and Lambert-St. Louis Intl. Airport (STL) was . Fares this good don't last forever, so make sure you book yours ASAP. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from DCA to Lambert Field?
Each airline has its own terms and conditions. If you decide to cancel your trip, visit our Customer Service Portal.
How do I find cheap flights from National Airport to Lambert Field that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Ronald Reagan Washington National Airport (DCA) to Lambert Field flights, you'll see a "no change fees" filter for you to select.
How far is the flight from National Airport to St. Louis Lambert International Airport?
It's just 1,150 kilometres between Arlington and St. Louis. Chances are you'll spend more time travelling to and from the airport than actually flying!
Which airlines fly direct from DCA to Lambert-St. Louis Intl. Airport (STL)?
Southwest Airlines (WN) is a popular option. It operates 117 flights between Ronald Reagan Washington National Airport (DCA) and St. Louis Lambert International Airport each month. After more options? Check out the fares with American Airlines (AA). This carrier offers 108 flights every month between these destinations.
Are DCA to Lambert Field flight tickets cheaper when they're purchased at the last minute?
It is possible to get amazing last-minute deals from DCA to Lambert Field, but it can also be hit-or-miss. As many airlines release prices up to a year in advance, it's worthwhile keeping an eye on fares early and being ready to pounce when you spot a good bargain. Expedia compares carrier prices and updates flight deals all the time, so you can feel confident knowing you're always getting the latest offers.

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₹29,853.00
*Available to Expedia members.