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.

$126 CHEAP FLIGHTS from District of Columbia 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

Thu, Feb 4 - Mon, Feb 8

12:59 pm - 4:50 pmDCA Washington, D.C. Reagan-National-STL Lambert-St Louis

4h 51m1 stop Detroit Metropolitan Wayne County

5:45 pm - 10:53 pmSTL Lambert-St Louis-DCA Washington, D.C. Reagan-National

4h 08m1 stop Detroit Metropolitan Wayne County

$237Delta

Tue, Sep 15 - Wed, Sep 16

9:40 am - 1:06 pmDCA Washington, D.C. Reagan-National-STL Lambert-St Louis

4h 26m1 stop Detroit Metropolitan Wayne County

4:59 pm - 11:44 pmSTL Lambert-St Louis-DCA Washington, D.C. Reagan-National

5h 45m1 stop Atlanta Hartsfield-Jackson

$237Delta

Thu, Sep 3 - Wed, Sep 9

6:20 am - 5:22 pmIAD Washington, D.C. Dulles Intl-STL Lambert-St Louis

12h 02m1 stop Atlanta Hartsfield-Jackson

2:29 pm - 12:10 amSTL Lambert-St Louis-IAD Washington, D.C. Dulles Intl

8h 41m1 stop Atlanta Hartsfield-Jackson

$238Frontier

Mon, Sep 7 - Wed, Sep 9

6:20 am - 5:22 pmIAD Washington, D.C. Dulles Intl-STL Lambert-St Louis

12h 02m1 stop Atlanta Hartsfield-Jackson

12:17 pm - 6:20 amSTL Lambert-St Louis-IAD Washington, D.C. Dulles Intl

17h 03m1 stop Las Vegas Harry Reid Intl

$238Frontier

Thu, Sep 10 - Mon, Sep 14

8:25 am - 9:39 amIAD Washington, D.C. Dulles Intl-STL Lambert-St Louis

2h 14mnonstop

8:00 am - 1:55 pmSTL Lambert-St Louis-IAD Washington, D.C. Dulles Intl

4h 55m1 stop Chicago O'Hare Intl

$239United Airlines

Thu, Oct 29 - Mon, Nov 2

8:40 am - 10:12 amIAD Washington, D.C. Dulles Intl-STL Lambert-St Louis

2h 32mnonstop

7:30 am - 1:35 pmSTL Lambert-St Louis-IAD Washington, D.C. Dulles Intl

5h 05m1 stop Chicago O'Hare Intl

$240United Airlines

Sat, Oct 24 - Mon, Oct 26

6:55 am - 4:05 pmDCA Washington, D.C. Reagan-National-STL Lambert-St Louis

10h 10m2 stops Houston Hobby Omaha Eppley Airfield

4:20 pm - 10:55 pmSTL Lambert-St Louis-DCA Washington, D.C. Reagan-National

5h 35m1 stop Atlanta Hartsfield-Jackson

$242Southwest

Thu, Oct 29 - Mon, Nov 2

3:00 pm - 7:00 pmDCA Washington, D.C. Reagan-National-STL Lambert-St Louis

5h 00m1 stop Chicago Midway

2:40 pm - 9:45 pmSTL Lambert-St Louis-DCA Washington, D.C. Reagan-National

6h 05m2 stops Kansas City Atlanta Hartsfield-Jackson

$242Southwest

Thu, Sep 17 - Fri, Sep 18

8:41 am - 10:15 amDCA Washington, D.C. Reagan-National-STL Lambert-St Louis

2h 34mnonstop

5:18 pm - 11:59 pmSTL Lambert-St Louis-DCA Washington, D.C. Reagan-National

5h 41m1 stop Chicago O'Hare Intl

$246American Airlines

Fri, Sep 18 - Mon, Sep 21

8:24 pm - 12:27 amDCA Washington, D.C. Reagan-National-STL Lambert-St Louis

5h 03m1 stop Chicago O'Hare Intl

6:00 am - 9:19 amSTL Lambert-St Louis-DCA Washington, D.C. Reagan-National

2h 19mnonstop

$246American Airlines

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

Fri, Aug 21 - Mon, Aug 24

8:40 am - 10:14 amDCA Washington, D.C. Reagan-National-STL Lambert-St Louis

2h 34mnonstop

7:58 pm - 9:59 pmSTL Lambert-St Louis-DCA Washington, D.C. Reagan-National

25h 01m1 stop Denver Intl

$323Frontier

Sat, Aug 22 - Mon, Aug 24

6:00 pm - 7:13 pmDCA Washington, D.C. Reagan-National-STL Lambert-St Louis

26h 13m1 stop Denver Intl

7:58 pm - 4:59 pmSTL Lambert-St Louis-DCA Washington, D.C. Reagan-National

20h 01m1 stop Denver Intl

$335Frontier

Sat, Aug 22 - Wed, Aug 26

5:45 pm - 7:11 pmIAD Washington, D.C. Dulles Intl-STL Lambert-St Louis

2h 26mnonstop

8:40 am - 11:54 amSTL Lambert-St Louis-IAD Washington, D.C. Dulles Intl

2h 14mnonstop

$465United Airlines

Sat, Aug 22 - Tue, Aug 25

5:45 pm - 7:11 pmIAD Washington, D.C. Dulles Intl-STL Lambert-St Louis

2h 26mnonstop

1:00 pm - 4:06 pmSTL Lambert-St Louis-IAD Washington, D.C. Dulles Intl

2h 06mnonstop

$465United Airlines

Sat, Aug 22 - Wed, Aug 26

4:32 pm - 6:03 pmDCA Washington, D.C. Reagan-National-STL Lambert-St Louis

2h 31mnonstop

10:44 am - 2:17 pmSTL Lambert-St Louis-DCA Washington, D.C. Reagan-National

2h 33mnonstop

$465American Airlines

Sat, Aug 22 - Tue, Aug 25

4:32 pm - 6:03 pmDCA Washington, D.C. Reagan-National-STL Lambert-St Louis

2h 31mnonstop

10:44 am - 2:17 pmSTL Lambert-St Louis-DCA Washington, D.C. Reagan-National

2h 33mnonstop

$465American Airlines

Sat, Aug 22 - Wed, Aug 26

8:15 am - 9:35 amDCA Washington, D.C. Reagan-National-STL Lambert-St Louis

2h 20mnonstop

7:10 pm - 10:10 pmSTL Lambert-St Louis-DCA Washington, D.C. Reagan-National

2h 00mnonstop

$465Southwest

Sat, Aug 22 - Wed, Aug 26

8:15 am - 9:35 amDCA Washington, D.C. Reagan-National-STL Lambert-St Louis

2h 20mnonstop

3:30 pm - 6:35 pmSTL Lambert-St Louis-DCA Washington, D.C. Reagan-National

2h 05mnonstop

$465Southwest

Sat, Aug 22 - Tue, Aug 25

5:16 pm - 8:42 pmIAD Washington, D.C. Dulles Intl-STL Lambert-St Louis

4h 26m1 stop Detroit Metropolitan Wayne County

10:33 am - 4:38 pmSTL Lambert-St Louis-IAD Washington, D.C. Dulles Intl

5h 05m1 stop Detroit Metropolitan Wayne County

$485Delta

Sat, Aug 22 - Wed, Aug 26

8:28 am - 11:56 amIAD Washington, D.C. Dulles Intl-STL Lambert-St Louis

4h 28m1 stop Atlanta Hartsfield-Jackson

6:25 pm - 11:26 pmSTL Lambert-St Louis-IAD Washington, D.C. Dulles Intl

4h 01m1 stop Detroit Metropolitan Wayne County

$485Delta

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

Fri, Sep 11 - Fri, Sep 18

7:59 pm - 9:24 pmDCA Washington, D.C. Reagan-National-STL Lambert-St Louis

2h 25mnonstop

10:45 am - 1:59 pmSTL Lambert-St Louis-DCA Washington, D.C. Reagan-National

2h 14mnonstop

$255American Airlines

Fri, Sep 11 - Fri, Sep 18

7:59 pm - 9:24 pmDCA Washington, D.C. Reagan-National-STL Lambert-St Louis

2h 25mnonstop

5:13 pm - 8:19 pmSTL Lambert-St Louis-DCA Washington, D.C. Reagan-National

2h 06mnonstop

$255American Airlines

Fri, Sep 25 - Fri, Sep 25

3:30 pm - 4:45 pmDCA Washington, D.C. Reagan-National-STL Lambert-St Louis

2h 15mnonstop

7:55 pm - 10:55 pmSTL Lambert-St Louis-DCA Washington, D.C. Reagan-National

2h 00mnonstop

$255Southwest

Thu, Oct 29 - Mon, Nov 2

8:40 am - 10:12 amIAD Washington, D.C. Dulles Intl-STL Lambert-St Louis

2h 32mnonstop

8:00 am - 11:10 amSTL Lambert-St Louis-IAD Washington, D.C. Dulles Intl

2h 10mnonstop

$264United Airlines

Fri, Sep 18 - Mon, Sep 21

2:54 pm - 4:27 pmDCA Washington, D.C. Reagan-National-STL Lambert-St Louis

2h 33mnonstop

5:13 pm - 8:19 pmSTL Lambert-St Louis-DCA Washington, D.C. Reagan-National

2h 06mnonstop

$270American Airlines

Fri, Sep 18 - Mon, Sep 21

2:54 pm - 4:27 pmDCA Washington, D.C. Reagan-National-STL Lambert-St Louis

2h 33mnonstop

6:00 am - 9:19 amSTL Lambert-St Louis-DCA Washington, D.C. Reagan-National

2h 19mnonstop

$270American Airlines

Thu, Nov 19 - Mon, Nov 23

8:40 am - 10:12 amIAD Washington, D.C. Dulles Intl-STL Lambert-St Louis

2h 32mnonstop

1:00 pm - 4:09 pmSTL Lambert-St Louis-IAD Washington, D.C. Dulles Intl

2h 09mnonstop

$271United Airlines

Sat, Sep 5 - Sat, Sep 12

5:45 pm - 7:11 pmIAD Washington, D.C. Dulles Intl-STL Lambert-St Louis

2h 26mnonstop

8:40 am - 11:54 amSTL Lambert-St Louis-IAD Washington, D.C. Dulles Intl

2h 14mnonstop

$281United Airlines

Fri, Nov 20 - Mon, Nov 23

2:40 pm - 4:05 pmDCA Washington, D.C. Reagan-National-STL Lambert-St Louis

2h 25mnonstop

7:55 pm - 10:50 pmSTL Lambert-St Louis-DCA Washington, D.C. Reagan-National

1h 55mnonstop

$282Southwest

Tue, Sep 29 - Tue, Oct 6

5:55 pm - 7:21 pmIAD Washington, D.C. Dulles Intl-STL Lambert-St Louis

2h 26mnonstop

8:30 am - 11:46 amSTL Lambert-St Louis-IAD Washington, D.C. Dulles Intl

2h 16mnonstop

$284United Airlines

Useful Info

Low season	January
High season	July
Cheapest flight	$126

Best time to beat the crowds with an average 7% drop in price.

Most popular time to fly with an average 9% 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.

Fenton

O'Fallon

Wentzville

Farmington

Eureka

Litchfield

Grafton

Shrewsbury

Glencoe

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

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St. Louis (STL)

STL

$126 Find Cheap Flights from District of Columbia to St. Louis - Compare and Save

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

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

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

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

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Choose which airport to fly into in St. Louis