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>

$67 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

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

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

Cheapest round-trip

$250

Overall average: $438

Frontier

Fri 1/30Sun 2/1

IAD - STL • 1 stop

Cheapest non-stop

$262

Typical prices: $267-$379

American Airlines

Sat 2/7Mon 2/9

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

Fri, Jan 30 - Sun, Feb 1

9:35 am - 11:11 am

IAD

STL

26h 36m

1 stop

5:42 pm - 12:36 pm

STL

IAD

17h 54m

1 stop

$250Frontier

Fri, Jan 30 - Sun, Feb 1

2:00 pm - 2:46 pm

DCA

STL

25h 46m

1 stop

12:03 pm - 1:02 pm

STL

DCA

23h 59m

1 stop

$250Frontier

Fri, Feb 20 - Fri, Feb 27

2:00 pm - 1:56 pm

DCA

STL

24h 56m

1 stop

1:59 pm - 1:00 pm

STL

DCA

22h 01m

1 stop

$251Frontier

Sat, Feb 14 - Mon, Feb 16

10:00 am - 3:05 pm

DCA

STL

6h 05m

1 stop

8:55 am - 11:50 am

STL

DCA

1h 55mnonstop

$252Southwest

Sat, Feb 14 - Sat, Feb 21

5:25 pm - 11:36 pm

IAD

STL

7h 11m

1 stop

6:35 am - 11:50 am

STL

IAD

4h 15m

1 stop

$253Delta

Tue, Feb 10 - Wed, Feb 18

12:20 pm - 4:07 pm

DCA

STL

4h 47m

1 stop

6:30 am - 12:54 pm

STL

DCA

5h 24m

1 stop

$253Delta

Mon, Feb 9 - Sun, Feb 15

2:58 pm - 11:33 pm

IAD

STL

9h 35m

2 stops

3:49 pm - 7:20 am

STL

IAD

14h 31m

1 stop

$256Multiple Airlines

Thu, Feb 12 - Sat, Feb 14

6:00 am - 9:15 am

DCA

STL

4h 15m

1 stop

7:50 am - 12:50 pm

STL

DCA

4h 00m

1 stop

$257Southwest

Tue, Feb 10 - Thu, Feb 12

8:10 pm - 9:51 pm

DCA

STL

2h 41mnonstop

6:00 am - 9:12 am

STL

DCA

2h 12mnonstop

$262American Airlines

Fri, Mar 6 - Sun, Mar 8

2:58 pm - 11:19 pm

IAD

STL

9h 21m

2 stops

4:51 pm - 7:24 am

STL

IAD

13h 33m

1 stop

$270Multiple Airlines

Useful Info

Low season	January
High season	April
Cheapest flight	$67

Best time to beat the crowds but there is an average 11% increase in price.

Most popular time to fly and prices are also 5% lower on average.

Flight from Reagan Washington National 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

$67 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