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>

$71 CHEAP FLIGHTS from District of Columbia to St. Louis

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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, Sep 27 - Mon, Sep 29

7:14 pm - 1:07 pmIAD-STL

18h 53m1 stop

4:00 pm - 12:15 amSTL-IAD

7h 15m1 stop

$180Frontier

Find Deal

Mon, Sep 15 - Fri, Sep 19

6:10 am - 3:04 pmIAD-STL

9h 54m1 stop

1:57 pm - 6:24 pmSTL-IAD

27h 27m1 stop

$185Frontier

Find Deal

Tue, Sep 23 - Tue, Sep 30

6:55 pm - 8:05 pmDCA-STL

2h 10mnonstop

3:15 pm - 6:15 pmSTL-DCA

2h 00mnonstop

$237Southwest

Find Deal

Tue, Oct 28 - Wed, Oct 29

3:45 pm - 6:35 pmDCA-STL

3h 50m1 stop

1:05 pm - 4:05 pmSTL-DCA

2h 00mnonstop

$243Southwest

Find Deal

Sat, Sep 20 - Tue, Sep 23

8:40 am - 10:02 amIAD-STL

2h 22mnonstop

8:15 am - 11:25 amSTL-IAD

2h 10mnonstop

$245United Airlines

Find Deal

Wed, Sep 17 - Thu, Sep 18

7:50 pm - 9:10 pmDCA-STL

2h 20mnonstop

10:54 am - 1:58 pmSTL-DCA

2h 04mnonstop

$245American Airlines

Find Deal

Tue, Sep 23 - Tue, Sep 30

8:40 am - 10:02 amIAD-STL

2h 22mnonstop

12:25 pm - 5:37 pmSTL-IAD

4h 12m1 stop

$247United Airlines

Find Deal

Wed, Sep 24 - Tue, Sep 30

5:08 pm - 9:53 pmDCA-STL

5h 45m1 stop

6:00 pm - 9:00 pmSTL-DCA

2h 00mnonstop

$247American Airlines

Find Deal

Thu, Sep 18 - Mon, Sep 22

6:10 am - 3:04 pmIAD-STL

9h 54m1 stop

9:17 am - 2:37 pmSTL-IAD

4h 20m1 stop

$250

Find Deal

Wed, Sep 17 - Thu, Sep 18

9:15 am - 9:40 amIAD-STL

25h 25m2 stops

4:00 pm - 12:15 amSTL-IAD

7h 15m1 stop

$266

Find Deal

Useful Info

Low season	January
High season	November
Cheapest flight	$71

Best time to beat the crowds with an average 1% drop in price.

Most popular time to fly with an average 2% increase in price.

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

Glencoe

Shrewsbury

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)

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.

STL

$71 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