S$193 Cheap Flights from St. Louis to Washington

View S$193 flight on Sun, 16 Nov, 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at S$193 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 St. Louis (STL) to Washington (DCA)

November is typically the cheapest month to fly

From S$166 - S$602 per traveller.

Graph displaying average flight prices per month

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St. Louis to Washington route information
Origin airport
Lambert-St. Louis Intl.
Destination airport
Ronald Reagan Washington National
Distance
1147 km

Perfect flights from St. Louis to Washington

Your Journey from St. Louis to Washington

Start your unforgettable journey with Expedia. Our broad selection of flights from St. Louis to Washington caters to every travel need. Whether you're yearning for a romantic escape, a solo adventure, or a cultural immersion, we've got you covered.
 

Choosing Your Ideal Flight

With Expedia, you have access to a wide range of airlines, including American Airlines, United. Our selection of flights from Lambert-St. Louis Intl. to Ronald Reagan Washington National caters to every traveler's requirements, ensuring your journey aligns with your schedule. With options from 17 airlines, you're bound to find the perfect flight.
 

Maximizing Value with St. Louis to Washington Flights

Experience the joy of finding cheap flights from Lambert-St. Louis Intl. to Ronald Reagan Washington National that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from S$193 and roundtrip prices *.
 

Pre-Flight Essentials

Ensure a smooth journey from St. Louis to Washington with Expedia. From information about check-in times and in-flight amenities to guidance on baggage policies, we provide all the essentials to prepare you for your flight.
 

Experience the Vibrant Washington

Picture yourself stepping off the plane in Washington and immersing yourself in the unique atmosphere of . From local markets to cultural festivals, each city offers its distinct charm. Make the most of your trip by exploring local attractions and indulging in the local cuisine. With Expedia, explore all this and more, tailored to your budget.
 

Added Convenience on Your St. Louis to Washington Flight

Traveling with Expedia is more than just a flight. We offer details about in-flight amenities, baggage policies, and more to ensure a smooth and hassle-free journey. Choose from our variety of airlines and embark on a memorable journey from St. Louis to Washington.
 

Beyond the Flight – Exploring Washington

With Expedia, your adventure extends beyond the flight. Explore Washington at your own pace by renting a car or booking a hotel. Discover hidden gems off the beaten path and create unforgettable memories.
 

Book Your Flight from St. Louis to Washington with Confidence

Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support make your travel experience seamless and stress-free. Embark on your journey from St. Louis to Washington with confidence. Book your travel arrangements with Expedia today.
 
*Note: Prices may vary based on availability and are subject to change.

Frequently asked questions

How much is a flight from STL to National Airport?
The lowest price advertised for a round-trip journey from St. Louis Lambert International Airport to National Airport is . But you better move fast. This price is taken from fares available within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from STL to DCA?
This differs between airlines, as each has its own terms and conditions. Visit the Customer Service Portal, where there are instructions on how to cancel online.
How do I find cheap flights from Lambert Field to National Airport 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 St. Louis Lambert International Airport to Ronald Reagan Washington National Airport (DCA) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Lambert Field to National Airport?
With a flight distance of 1,150 kilometres, it's just a short hop from STL to Ronald Reagan Washington National Airport (DCA). It might be a quick one, but it's still worth packing a good book to read.
Which airlines fly direct from St. Louis Lambert International Airport to Ronald Reagan Washington National Airport (DCA)?
Many adventurers like to fly with Southwest Airlines (WN) from Lambert Field to DCA. It offers 117 monthly flights, so you can pick a flight time that's right for you. You could also take a look at the fares on offer with American Airlines (AA). This airline operates 108 flights every month between St. Louis and Arlington.
Are Lambert Field to Ronald Reagan Washington National Airport (DCA) flight tickets cheaper when they're purchased at the last minute?
Late planners can occasionally pick up a bargain, with some super cheap fares from Lambert Field to DCA cropping up a few weeks before the departure date. If you'd rather plan ahead of time, Expedia compares and updates all the best flight deals continually --- as early as 12 months in advance in some cases. It depends on the carrier though, as not all airlines issue prices so far in advance.

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