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>

$80 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

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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

Fri, May 8 - Thu, May 14

8:09 am - 11:19 pm

IAD

STL

16h 10m

1 stop

4:55 pm - 7:27 am

STL

IAD

13h 32m

1 stop

$267Frontier

Wed, Mar 25 - Thu, Mar 26

7:30 am - 9:06 am

DCA

STL

2h 36mnonstop

6:00 am - 9:12 am

STL

DCA

2h 12mnonstop

$267American Airlines

Wed, May 20 - Wed, May 27

3:15 pm - 9:13 pm

IAD

STL

6h 58m

1 stop

8:35 am - 11:47 am

STL

IAD

2h 12mnonstop

$268United Airlines

Thu, May 28 - Sat, May 30

8:00 am - 9:20 am

DCA

STL

2h 20mnonstop

3:25 pm - 6:25 pm

STL

DCA

2h 00mnonstop

$269Southwest

Fri, May 8 - Sun, May 10

6:20 am - 7:12 pm

IAD

STL

13h 52m

2 stops

11:21 am - 8:56 am

STL

IAD

20h 35m

1 stop

$269Frontier

Thu, Apr 23 - Sat, Apr 25

5:00 pm - 10:40 pm

DCA

STL

6h 40m

1 stop

6:10 am - 4:15 pm

STL

DCA

9h 05m

2 stops

$270Southwest

Thu, May 21 - Thu, Jun 4

5:28 pm - 11:57 pm

IAD

STL

7h 29m

1 stop

2:17 pm - 12:49 am

STL

IAD

9h 32m

1 stop

$270Frontier

Wed, Apr 15 - Mon, Apr 20

7:00 am - 11:19 pm

IAD

STL

17h 19m

2 stops

8:23 pm - 12:36 am

STL

IAD

27h 13m

1 stop

$271Multiple Airlines

Thu, Apr 16 - Tue, Apr 21

3:35 pm - 6:40 pm

DCA

STL

4h 05m

1 stop

7:55 pm - 11:00 pm

STL

DCA

2h 05mnonstop

$271Southwest

Sat, Apr 4 - Tue, Apr 7

5:16 pm - 10:30 am

IAD

STL

18h 14m

1 stop

11:21 am - 12:36 am

STL

IAD

12h 15m

1 stop

$272Frontier

Useful Info

Low season	January
High season	April
Cheapest flight	$80

Best time to beat the crowds but there is an average 8% increase in price.

Most popular time to fly and prices are also 3% 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

$80 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

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