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>

$63 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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Filter your dealsChoose cabin class, free Wi-Fi and more.

Cheapest round-trip

$253

Overall average: $407

Frontier

Thu 3/5Fri 3/6

IAD - STL • 1 stop

Cheapest non-stop

$264

Typical prices: $493-$693

United Airlines

Wed 3/4Wed 7/1

IAD - 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

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

Thu, Mar 5 - Fri, Mar 6

10:10 am - 11:59 pm

IAD

STL

14h 49m

1 stop

1:09 pm - 12:31 am

STL

IAD

10h 22m

1 stop

$253Frontier

Mon, Mar 9 - Mon, Mar 30

6:00 pm - 7:11 pm

DCA

STL

26h 11m

2 stops

8:12 pm - 12:04 pm

STL

DCA

14h 52m

1 stop

$255Frontier

Thu, Apr 2 - Tue, Apr 7

6:00 am - 10:30 am

IAD

STL

5h 30m

1 stop

4:54 pm - 10:11 am

STL

IAD

16h 17m

1 stop

$256Frontier

Fri, Mar 13 - Wed, Apr 1

2:00 pm - 9:49 am

DCA

STL

20h 49m

1 stop

8:16 pm - 12:02 pm

STL

DCA

14h 46m

1 stop

$259Frontier

Sat, Apr 11 - Sat, Apr 18

5:16 pm - 10:30 am

IAD

STL

18h 14m

1 stop

8:13 pm - 12:36 am

STL

IAD

27h 23m

1 stop

$261Frontier

Wed, Mar 4 - Wed, Jul 1

8:40 am - 10:13 am

IAD

STL

2h 33mnonstop

8:25 am - 11:31 am

STL

IAD

2h 06mnonstop

$264United Airlines

Wed, Mar 4 - Wed, Mar 11

1:44 pm - 3:18 pm

DCA

STL

2h 34mnonstop

6:57 pm - 11:59 pm

STL

DCA

4h 02m

1 stop

$264American Airlines

Wed, Mar 4 - Wed, Mar 11

6:45 pm - 8:23 pm

IAD

STL

2h 38mnonstop

8:17 am - 4:09 pm

STL

IAD

6h 52m

1 stop

$266United Airlines

Sun, Feb 22 - Thu, Mar 5

5:39 pm - 6:51 am

IAD

STL

14h 12m

1 stop

3:49 pm - 2:18 pm

STL

IAD

21h 29m

2 stops

$269Multiple Airlines

Wed, Mar 4 - Sat, Mar 7

7:30 am - 9:06 am

DCA

STL

2h 36mnonstop

1:36 pm - 9:30 pm

STL

DCA

6h 54m

1 stop

$274American Airlines

Useful Info

Low season	January
High season	May
Cheapest flight	$63

Best time to beat the crowds but there is an average 10% increase in price.

Most popular time to fly and prices are also 5% 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

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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

$63 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