How does KAYAK find such low prices on flights from District of Columbia to St. Louis?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from District of Columbia to St. Louis. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from District of Columbia to St. Louis?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from District of Columbia is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from District of Columbia to St. Louis?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to District of Columbia with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from District of Columbia to St. Louis?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from District of Columbia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

$57 Cheap Flights from District of Columbia to St. Louis

STL

KAYAK searches hundreds of travel sites at once for deals on flights to St. Louis

...and more

Travelers love KAYAK

41.299.237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Cheapest round-trip

$256

Overall average: $306

Southwest

Sat 1/17Sun 1/18

DCA - STL • 2 stops

Cheapest non-stop

$261

Typical prices: $247-$445

Southwest

Sat 1/17Mon 1/19

DCA - STL • Non-stop

Start a new search

KAYAK searches 100s of sites at once to find you the best travel deals.

We hope you love your trip to St. Louis!

Flight Deals

Cheap Flights from District of Columbia to St. Louis

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from District of Columbia to St. Louis that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from District of Columbia to St. Louis

Sat, Jan 17 - Sun, Jan 18

10:05 am - 5:10 pm

DCA

STL

8h 05m2 stops

8:20 am - 2:55 pm

STL

DCA

5h 35m1 stop

$256Southwest

Thu, Jan 15 - Sun, Jan 18

8:49 am - 10:34 pm

IAD

STL

14h 45m1 stop

5:11 pm - 11:43 am

STL

IAD

17h 32m2 stops

$261Frontier

Thu, Jan 15 - Sun, Jan 18

8:00 am - 9:35 am

DCA

STL

2h 35mnonstop

3:05 pm - 6:05 pm

STL

DCA

2h 00mnonstop

$261Southwest

Thu, Dec 25 - Thu, Jan 1

8:35 am - 10:08 am

IAD

STL

2h 33mnonstop

8:15 am - 11:24 am

STL

IAD

2h 09mnonstop

$262United Airlines

Wed, Feb 18 - Sat, Feb 21

8:40 am - 10:13 am

IAD

STL

2h 33mnonstop

8:30 am - 11:40 am

STL

IAD

2h 10mnonstop

$263United Airlines

Wed, Jan 21 - Thu, Jan 22

8:40 am - 10:13 am

IAD

STL

2h 33mnonstop

12:44 pm - 3:55 pm

STL

IAD

2h 11mnonstop

$265United Airlines

Thu, Jan 22 - Sat, Jan 24

6:45 pm - 8:15 pm

DCA

STL

2h 30mnonstop

8:55 am - 11:50 am

STL

DCA

1h 55mnonstop

$265Southwest

Sat, Jan 31 - Sun, Feb 1

11:39 am - 11:33 pm

IAD

STL

12h 54m2 stops

5:42 pm - 12:36 pm

STL

IAD

17h 54m1 stop

$273Multiple Airlines

Tue, Jan 6 - Fri, Jan 9

8:10 pm - 9:51 pm

DCA

STL

2h 41mnonstop

6:00 am - 9:19 am

STL

DCA

2h 19mnonstop

$276American Airlines

Thu, Jan 15 - Sun, Jan 18

6:00 am - 11:05 am

DCA

STL

6h 05m1 stop

9:59 am - 4:58 pm

STL

DCA

5h 59m1 stop

$281Delta

Useful Info

Low season	January
High season	May
Cheapest flight	$57

Best time to beat the crowds with an average 4% drop in price.

Most popular time to fly and prices are also 1% lower on average.

Flight from Washington Dulles Airport to St. Louis

How does KAYAK find such low prices on flights from District of Columbia to St. Louis?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from District of Columbia to St. Louis.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from District of Columbia to St. Louis?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from District of Columbia is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from District of Columbia to St. Louis?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to District of Columbia with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from District of Columbia to St. Louis?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from District of Columbia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

O'Fallon

Wentzville

Farmington

Eureka

Litchfield

Grafton

Shrewsbury

Glencoe

Everything you need to know for your flight to St. Louis

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

Information on the airport you'll fly into in St. Louis

St. Louis (STL)

STL

$56 Find Cheap Flights from District of Columbia to St. Louis

KAYAK searches hundreds of travel sites at once for deals on flights to St. Louis

Everything you should know

Cheap Flights from District of Columbia to St. Louis

Recent round-trip flight deals from District of Columbia to St. Louis

Recent one-way flight deals from District of Columbia to St. Louis

Recent last minute flight deals from District of Columbia to St. Louis

Recent direct flight deals from District of Columbia to St. Louis

Good to know

FAQs for booking flights from District of Columbia to St. Louis

How does KAYAK find such low prices on flights from District of Columbia to St. Louis?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from District of Columbia to St. Louis.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from District of Columbia to St. Louis?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from District of Columbia is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from District of Columbia to St. Louis?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to District of Columbia with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from District of Columbia to St. Louis?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from District of Columbia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near St. Louis?

Everything you need to know for your flight to St. Louis

Information on the airport you'll fly into in St. Louis

Cabin class types available on flights to District of Columbia

Complete your trip to St. Louis with a hotel stay or car rental

Find direct flights for St. Louis

Flights to other popular destinations

Flights from domestic origins to St. Louis

Choose which airport to fly into in St. Louis

Find deals for your return flight