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Cheap flights from Washington, D.C. to St. Louis

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Find the cheapest flights from Washington, D.C. to St. Louis

Cheap return flights

These are some of the best return flight deals from Washington, D.C. to St. Louis that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Washington, D.C. to St. Louis.

Cheap last-minute flights

Planning a quick getaway from Washington, D.C. to St. Louis? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to St. Louis, so you can enjoy a seamless trip without stopovers.

Cheap bus & train deals from Washington, D.C. to St. Louis

Find recent round-trip train or bus tickets from Washington, D.C. to St. Louis.

All round-trip flight deals to St. Louis

The cheapest plane tickets to St. Louis found on KAYAK recently.
DCA-STL
2h 36mdirect
STL-DCA
2h 20mdirect
American Airlines
Find Deal
IAD-STL
2h 28mdirect
STL-IAD
2h 18mdirect
Avianca
Find Deal
DCA-STL
2h 25mdirect
STL-DCA
1h 55mdirect
Southwest
Find Deal
IAD-STL
2h 28mdirect
STL-IAD
2h 18mdirect
Copa Airlines
Find Deal
IAD-STL
2h 23mdirect
STL-IAD
2h 08mdirect
Brussels Airlines
Find Deal
IAD-STL
2h 23mdirect
STL-IAD
2h 06mdirect
Lufthansa
Find Deal
IAD-STL
2h 28mdirect
STL-IAD
2h 18mdirect
United Airlines
Find Deal
DCA-STL
2h 36mdirect
American Airlines
Find Deal
IAD-STL
2h 28mdirect
Avianca
Find Deal
DCA-STL
2h 25mdirect
Southwest
Find Deal
IAD-STL
2h 28mdirect
Copa Airlines
Find Deal
IAD-STL
2h 23mdirect
Brussels Airlines
Find Deal
IAD-STL
2h 23mdirect
Lufthansa
Find Deal
IAD-STL
2h 28mdirect
United Airlines
Find Deal

How to get the cheapest flight ticket from Washington, D.C. to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly from Washington, D.C. to St. Louis?

January. The cheapest time of year to fly to St. Louis from Washington, D.C. is January. The most expensive is March.

How far in advance should you book Washington, D.C. to St. Louis flights?

44 days before. The cheapest time to buy a flight from Washington, D.C. to St. Louis is approximately 44 days to departure

How many flights depart from Washington, D.C. to St. Louis on average per day?

The number of flights available between Washington, D.C. and St. Louis is 2 per day as of November 2024. The most frequent departure time is 18:00, with 45% of daily flights leaving in the evening.

How many flights depart from Washington, D.C. to St. Louis on average per week?

As of November 2024, there are 18 flights per week flying from Washington, D.C. to St. Louis. The most common day of the week flights depart is Saturday, with 61% of flights taking off on this day.

How have Washington, D.C. to St. Louis flight prices changed over time?

As of November 2024, prices for Washington, D.C. to St. Louis flights are approximately 35% cheaper when compared to flights at the same time last year.

When to book flights from Washington, D.C. to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Washington, D.C. to St. Louis (WAS to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to St. Louis

Direct flights

None
There are no direct flights from Washington, D.C. to St. Louis. There are no popular flight routes from Washington, D.C. to St. Louis.

  • How far is Washington, D.C. to Lambert-St Louis by plane?

    The distance between Washington, D.C. and Lambert-St Louis is about 1139,8 km.

  • When did momondo last update prices for flights from Washington, D.C. to Lambert-St Louis Airport?

    Prices for flights from Washington, D.C. to Lambert-St Louis Airport were last updated today.

  • How old do you have to be to fly from Washington, D.C. to Lambert-St Louis Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents you'll need for your trip to Lambert-St Louis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Lambert-St Louis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Washington, D.C. to St. Louis?


Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to St. Louis?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to St. Louis for you.

Can I find flights from Washington, D.C. to St. Louis with flexible booking policies on momondo?

Yes. All flights to St. Louis from Washington, D.C. on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Washington, D.C. to St. Louis?

momondo provides multiple filters to help you find the best flight to St. Louis from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Washington, D.C. to St. Louis right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Washington, D.C. to St. Louis now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to St. Louis and let you know when they change.


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