What is the cheapest airline that flies from Lambert-St Louis to District of Columbia?

Southwest, Delta, and United Airlines are the most popular carriers operating from Lambert-St Louis to District of Columbia

What airlines fly to District of Columbia?

Southwest, American Airlines and United Airlines are the top three most popular airlines that fly to District of Columbia from St. Louis according to our data. Southwest is the first choice among our users, with 58% of people opting to fly with this airline when traveling to District of Columbia. Keep in mind that there are 5 different airlines that fly to District of Columbia on a routine basis, so you have a few additional options to choose from.

How many flights depart from St. Louis to District of Columbia on average per week?

The number of flights available between St. Louis and District of Columbia is 75 per week as of September 2026. The most frequent departure day is Tue, with 19% of weekly flights leaving on this day.

How many flights depart from St. Louis to District of Columbia on average per day?

10 flights are operational daily from St. Louis to District of Columbia as of September 2026. The most popular departure time for this route is 8:00AM, with 49% of flights per day taking off at noon.

When did momondo last update prices for flights from Lambert-St Louis Airport to District of Columbia?

Prices for flights from Lambert-St Louis Airport to District of Columbia refresh daily.

How many operators does momondo search for flights from Lambert-St Louis Airport to District of Columbia?

As of September 2026, there are 5 operators available to choose from for flights from Lambert-St Louis Airport to District of Columbia.

How old do you have to be to fly from Lambert-St Louis Airport to District of Columbia?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to District of Columbia.

What documentation or ID do you need to fly to District of Columbia?

The travel and health documents you'll need for your trip to District of Columbia may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at District of Columbia. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$59 Cheap Flights from St. Louis to District of Columbia in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to District of Columbia

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:25 pm - 8:14 pmSTL Lambert-St Louis-IAD Washington, D.C. Dulles Intl

4h 49m1 stop Atlanta Hartsfield-Jackson

5:13 pm - 8:51 pmIAD Washington, D.C. Dulles Intl-STL Lambert-St Louis

4h 38m1 stop Detroit Metropolitan Wayne County

$237Delta

Sat, Oct 10 - Tue, Oct 13

12:36 pm - 6:42 pmSTL Lambert-St Louis-IAD Washington, D.C. Dulles Intl

5h 06m1 stop Atlanta Hartsfield-Jackson

8:07 am - 1:28 pmIAD Washington, D.C. Dulles Intl-STL Lambert-St Louis

6h 21m1 stop Atlanta Hartsfield-Jackson

$237Delta

Mon, Dec 14 - Wed, Dec 16

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

5h 35m1 stop Atlanta Hartsfield-Jackson

7:55 am - 12:15 pmDCA Washington, D.C. Reagan-National-STL Lambert-St Louis

5h 20m1 stop Chicago Midway

$237Southwest

Thu, Oct 8 - Thu, Oct 15

6:10 pm - 11:35 pmSTL Lambert-St Louis-DCA Washington, D.C. Reagan-National

4h 25m1 stop Chicago Midway

5:05 pm - 7:55 pmDCA Washington, D.C. Reagan-National-STL Lambert-St Louis

3h 50m1 stop Nashville Intl

$237Southwest

Thu, Oct 15 - Mon, Oct 19

3:11 pm - 9:11 pmSTL Lambert-St Louis-IAD Washington, D.C. Dulles Intl

5h 00m1 stop Chicago O'Hare Intl

8:20 am - 12:13 pmIAD Washington, D.C. Dulles Intl-STL Lambert-St Louis

4h 53m1 stop Chicago O'Hare Intl

$237United Airlines

Mon, Oct 5 - Wed, Oct 7

5:00 am - 11:52 amSTL Lambert-St Louis-IAD Washington, D.C. Dulles Intl

5h 52m1 stop Chicago O'Hare Intl

8:23 am - 12:12 pmIAD Washington, D.C. Dulles Intl-STL Lambert-St Louis

4h 49m1 stop Chicago O'Hare Intl

$237United Airlines

Thu, Oct 29 - Sat, Oct 31

6:44 pm - 4:47 pmSTL Lambert-St Louis-DCA Washington, D.C. Reagan-National

21h 03m2 stops Atlanta Hartsfield-Jackson Denver Intl

1:00 pm - 7:14 pmDCA Washington, D.C. Reagan-National-STL Lambert-St Louis

7h 14m1 stop Denver Intl

$239Frontier

Wed, Nov 4 - Sat, Nov 7

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

8h 41m1 stop Atlanta Hartsfield-Jackson

11:12 am - 5:54 pmIAD Washington, D.C. Dulles Intl-STL Lambert-St Louis

7h 42m1 stop Orlando

$241Frontier

Wed, Sep 23 - Thu, Sep 24

5:08 pm - 8:18 pmSTL Lambert-St Louis-DCA Washington, D.C. Reagan-National

2h 10mnonstop

6:55 pm - 8:32 pmDCA Washington, D.C. Reagan-National-STL Lambert-St Louis

2h 37mnonstop

$246American Airlines

Tue, Oct 6 - Fri, Oct 9

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

2h 19mnonstop

2:25 pm - 3:57 pmDCA Washington, D.C. Reagan-National-STL Lambert-St Louis

2h 32mnonstop

$246American Airlines

Fri, Oct 2 - Mon, Oct 5

Cheap last minute flights

Enter your travel dates to find the best prices.

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

8h 41m1 stop Atlanta Hartsfield-Jackson

7:50 am - 1:10 pmIAD Washington, D.C. Dulles Intl-STL Lambert-St Louis

6h 20m1 stop Atlanta Hartsfield-Jackson

$261Frontier

Wed, Sep 16 - Wed, Sep 23

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

17h 03m1 stop Las Vegas Harry Reid Intl

6:00 am - 11:17 amIAD Washington, D.C. Dulles Intl-STL Lambert-St Louis

30h 17m1 stop Las Vegas Harry Reid Intl

$280Frontier

Wed, Sep 16 - Sat, Sep 19

1:54 pm - 6:59 pmSTL Lambert-St Louis-IAD Washington, D.C. Dulles Intl

4h 05m1 stop Charlotte Douglas

7:57 am - 1:03 pmIAD Washington, D.C. Dulles Intl-STL Lambert-St Louis

6h 06m1 stop Charlotte Douglas

$445American Airlines

Mon, Sep 14 - Wed, Sep 16

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

2h 06mnonstop

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

2h 34mnonstop

$482American Airlines

Mon, Sep 14 - Wed, Sep 16

8:25 am - 11:25 amSTL Lambert-St Louis-DCA Washington, D.C. Reagan-National

2h 00mnonstop

11:45 am - 7:50 pmDCA Washington, D.C. Reagan-National-STL Lambert-St Louis

9h 05m1 stop Tampa

$495Southwest

Wed, Sep 16 - Sat, Sep 19

10:45 am - 3:45 pmSTL Lambert-St Louis-DCA Washington, D.C. Reagan-National

4h 00m1 stop Chicago Midway

12:30 pm - 1:40 pmDCA Washington, D.C. Reagan-National-STL Lambert-St Louis

2h 10mnonstop

$495Southwest

Wed, Sep 16 - Sat, Sep 19

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

2h 14mnonstop

5:15 pm - 9:38 pmIAD Washington, D.C. Dulles Intl-STL Lambert-St Louis

5h 23m1 stop Chicago O'Hare Intl

$495United Airlines

Wed, Sep 16 - Wed, Sep 23

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

2h 14mnonstop

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

2h 14mnonstop

$498United Airlines

Wed, Sep 16 - Wed, Sep 23

6:54 pm - 12:41 amSTL Lambert-St Louis-IAD Washington, D.C. Dulles Intl

4h 47m1 stop Atlanta Hartsfield-Jackson

8:08 am - 1:23 pmIAD Washington, D.C. Dulles Intl-STL Lambert-St Louis

6h 15m1 stop Atlanta Hartsfield-Jackson

$513Delta

Mon, Sep 14 - Wed, Sep 16

10:29 am - 4:30 pmSTL Lambert-St Louis-IAD Washington, D.C. Dulles Intl

5h 01m1 stop Detroit Metropolitan Wayne County

10:15 am - 3:54 pmIAD Washington, D.C. Dulles Intl-STL Lambert-St Louis

6h 39m1 stop Atlanta Hartsfield-Jackson

$554Delta

Mon, Sep 14 - Wed, Sep 16

Cheap direct flights

Enter your travel dates to find the best prices.

5:08 pm - 8:18 pmSTL Lambert-St Louis-DCA Washington, D.C. Reagan-National

2h 10mnonstop

6:55 pm - 8:32 pmDCA Washington, D.C. Reagan-National-STL Lambert-St Louis

2h 37mnonstop

$246American Airlines

Tue, Oct 6 - Fri, Oct 9

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

2h 19mnonstop

2:25 pm - 3:57 pmDCA Washington, D.C. Reagan-National-STL Lambert-St Louis

2h 32mnonstop

$246American Airlines

Fri, Oct 2 - Mon, Oct 5

3:55 pm - 6:55 pmSTL Lambert-St Louis-DCA Washington, D.C. Reagan-National

2h 00mnonstop

8:00 am - 9:25 amDCA Washington, D.C. Reagan-National-STL Lambert-St Louis

2h 25mnonstop

$246Southwest

Fri, Oct 2 - Tue, Oct 6

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

2h 00mnonstop

6:50 pm - 8:15 pmDCA Washington, D.C. Reagan-National-STL Lambert-St Louis

2h 25mnonstop

$246Southwest

Fri, Oct 2 - Mon, Oct 5

3:55 pm - 6:55 pmSTL Lambert-St Louis-DCA Washington, D.C. Reagan-National

2h 00mnonstop

6:50 pm - 8:15 pmDCA Washington, D.C. Reagan-National-STL Lambert-St Louis

2h 25mnonstop

$246Southwest

Fri, Oct 16 - Mon, Oct 19

5:08 pm - 8:18 pmSTL Lambert-St Louis-DCA Washington, D.C. Reagan-National

2h 10mnonstop

8:26 am - 10:18 amDCA Washington, D.C. Reagan-National-STL Lambert-St Louis

2h 52mnonstop

$246American Airlines

Fri, Oct 9 - Mon, Oct 19

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

2h 19mnonstop

2:25 pm - 3:57 pmDCA Washington, D.C. Reagan-National-STL Lambert-St Louis

2h 32mnonstop

$246American Airlines

Fri, Oct 2 - Tue, Oct 6

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

2h 16mnonstop

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

2h 26mnonstop

$277United Airlines

Tue, Oct 6 - Sat, Oct 10

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

2h 10mnonstop

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

2h 32mnonstop

$292United Airlines

Mon, Nov 23 - Thu, Nov 26

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

2h 09mnonstop

8:30 am - 9:58 amIAD Washington, D.C. Dulles Intl-STL Lambert-St Louis

2h 28mnonstop

$296United Airlines

Sat, Nov 14 - Wed, Dec 2

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Frontier flights from St. Louis to District of Columbia

Our best Frontier deals on St. Louis to District of Columbia flight tickets

Frontier

Sep 23

STL2:29 pmLambert-St Louis

8h 41m

1 stop

IAD12:10 amWashington, D.C. Dulles Intl

Sep 24

IAD11:12 amWashington, D.C. Dulles Intl

7h 42m

1 stop

STL5:54 pmLambert-St Louis

$241

Frontier

Sep 24

STL6:39 pmLambert-St Louis

14h 38m

1 stop

IAD10:17 amWashington, D.C. Dulles Intl

Sep 28

IAD7:50 amWashington, D.C. Dulles Intl

6h 20m

1 stop

STL1:10 pmLambert-St Louis

$242

Frontier

Oct 1

STL6:39 pmLambert-St Louis

14h 38m

1 stop

IAD10:17 amWashington, D.C. Dulles Intl

Oct 4

IAD11:12 amWashington, D.C. Dulles Intl

6h 22m

1 stop

STL4:34 pmLambert-St Louis

$245

American Airlines flights from St. Louis to District of Columbia

Our best American Airlines deals on St. Louis to District of Columbia flight tickets

American Airlines

Oct 8

STL5:08 pmLambert-St Louis

2h 10m

DCA8:18 pmWashington, D.C. Reagan-National

Oct 27

DCA8:26 amWashington, D.C. Reagan-National

2h 52m

STL10:18 amLambert-St Louis

$255

American Airlines

Oct 5

STL5:08 pmLambert-St Louis

2h 10m

DCA8:18 pmWashington, D.C. Reagan-National

Oct 12

DCA2:25 pmWashington, D.C. Reagan-National

2h 32m

STL3:57 pmLambert-St Louis

$260

American Airlines

Oct 5

STL5:08 pmLambert-St Louis

2h 10m

DCA8:18 pmWashington, D.C. Reagan-National

Oct 12

DCA6:00 amWashington, D.C. Reagan-National

5h 50m

1 stop

STL10:50 amLambert-St Louis

$270

momondo Fare Finder

Use the filters below to find and compare flights from St. Louis to District of Columbia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisWashington, D.C.

STL Lambert-St Louis - IAD Washington, D.C. Dulles Intl

STLIAD

Lambert-St Louis

Sat 10/10

2:25 pm-8:14 pm

1 stop4h 49m

Washington, D.C. Dulles Intl

Tue 10/13

5:13 pm-8:51 pm

1 stop4h 38m

$237

St. LouisWashington, D.C.

STL Lambert-St Louis - IAD Washington, D.C. Dulles Intl

STLIAD

Lambert-St Louis

Mon 12/14

12:36 pm-6:42 pm

1 stop5h 06m

Washington, D.C. Dulles Intl

Wed 12/16

8:07 am-1:28 pm

1 stop6h 21m

$237

St. LouisWashington, D.C.

STL Lambert-St Louis - DCA Washington, D.C. Reagan-National

STLDCA

Lambert-St Louis

Thu 10/8

4:20 pm-10:55 pm

1 stop5h 35m

Washington, D.C. Reagan-National

Thu 10/15

7:55 am-12:15 pm

1 stop5h 20m

$237

St. LouisWashington, D.C.

STL Lambert-St Louis - DCA Washington, D.C. Reagan-National

STLDCA

Lambert-St Louis

Thu 10/15

6:10 pm-11:35 pm

1 stop4h 25m

Washington, D.C. Reagan-National

Mon 10/19

5:05 pm-7:55 pm

1 stop3h 50m

$237

St. LouisWashington, D.C.

STL Lambert-St Louis - IAD Washington, D.C. Dulles Intl

STLIAD

Lambert-St Louis

Mon 10/5

3:11 pm-9:11 pm

1 stop5h 00m

Washington, D.C. Dulles Intl

Wed 10/7

8:20 am-12:13 pm

1 stop4h 53m

$237

St. LouisWashington, D.C.

STL Lambert-St Louis - IAD Washington, D.C. Dulles Intl

STLIAD

Lambert-St Louis

Thu 10/29

5:00 am-11:52 am

1 stop5h 52m

Washington, D.C. Dulles Intl

Sat 10/31

8:23 am-12:12 pm

1 stop4h 49m

$237

St. LouisWashington, D.C.

STL Lambert-St Louis - DCA Washington, D.C. Reagan-National

STLDCA

Lambert-St Louis

Wed 11/4

6:44 pm-4:47 pm

2 stops21h 03m

Washington, D.C. Reagan-National

Sat 11/7

1:00 pm-7:14 pm

1 stop7h 14m

$239

St. LouisWashington, D.C.

STL Lambert-St Louis - IAD Washington, D.C. Dulles Intl

STLIAD

Lambert-St Louis

Wed 9/23

2:29 pm-12:10 am

1 stop8h 41m

Washington, D.C. Dulles Intl

Thu 9/24

11:12 am-5:54 pm

1 stop7h 42m

$241

Quickest round-trip

St. LouisWashington, D.C.

STL Lambert-St Louis - DCA Washington, D.C. Reagan-National

STLDCA

Lambert-St Louis

Tue 10/6

5:08 pm-8:18 pm

Nonstop2h 10m

Washington, D.C. Reagan-National

Fri 10/9

6:55 pm-8:32 pm

Nonstop2h 37m

$246

St. LouisWashington, D.C.

STL Lambert-St Louis - DCA Washington, D.C. Reagan-National

STLDCA

Lambert-St Louis

Fri 10/2

6:00 am-9:19 am

Nonstop2h 19m

Washington, D.C. Reagan-National

Mon 10/5

2:25 pm-3:57 pm

Nonstop2h 32m

$246

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from St. Louis to District of Columbia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to District of Columbia?

In general, October is the cheapest month to fly from St. Louis to District of Columbia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $314. If you don’t want to visit District of Columbia in October, then you should wait until December to fly from St. Louis, when ticket prices are also cheap, with an average price of $337.

What is the cheapest day to depart on your flight to District of Columbia?

The cheapest day to depart on your flight to District of Columbia is on a Friday when prices can be found for as low as $401. This is often the case because there is less demand to fly during this day of the week. On the other hand, Monday is the most expensive day to depart from St. Louis because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $524.

What is the cheapest time of day to depart on your flight to District of Columbia?

Flying to District of Columbia from St. Louis in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $360 when looking at flights departing in the afternoon. Flights to District of Columbia are more costly at noon, with an average ticket price of $556. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Lambert-St Louis to District of Columbia flight route?

Fly from Lambert-St Louis to Washington, D.C. Reagan-National for the best Lambert-St Louis - District of Columbia flight prices

What cabin class options are available on St. Louis to District of Columbia flights?

There are 4 cabin classes available to choose from on St. Louis to District of Columbia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on St. Louis to District of Columbia flights?

You could potentially save up to 4% on your flight if you consider stops on a St. Louis to District of Columbia flight.

Cheap St. Louis to District of Columbia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to District of Columbia

Best Price Found	$59
Fastest flight time	1h 55m
Direct flights	Every day
Airports in District of Columbia	2 airports

The best one-way flight to District of Columbia from St. Louis in the past 72 hours is $59. The best round-trip flight deal from St. Louis to District of Columbia found on momondo in the last 72 hours is $237.

The fastest flight from St. Louis to District of Columbia takes 1h 55m

Direct flights go from St. Louis to District of Columbia every day.

There are 2 airports in District of Columbia. From St. Louis there are direct flights to Washington, D.C. Reagan-National (DCA), Washington, D.C. Dulles Intl (IAD).

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Frequently asked questions about flying from St. Louis to District of Columbia

When did momondo last update prices for flights from Lambert-St Louis Airport to District of Columbia?
Prices for flights from Lambert-St Louis Airport to District of Columbia refresh daily.
How many operators does momondo search for flights from Lambert-St Louis Airport to District of Columbia?
As of September 2026, there are 5 operators available to choose from for flights from Lambert-St Louis Airport to District of Columbia.
How old do you have to be to fly from Lambert-St Louis Airport to District of Columbia?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to District of Columbia.
What documentation or ID do you need to fly to District of Columbia?
The travel and health documents you'll need for your trip to District of Columbia may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at District of Columbia. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from St. Louis to District of Columbia?
Based on momondo bookings for flights between St. Louis and District of Columbia, the leading plane model is Boeing 737 MAX 8, making up 20.98% of the total bookings. Other popular models include Embraer 175 with 18.84%, Canadair (Bombardier) Regional Jet CRJ-550 with 13.50%, and Boeing 737-800 Passenger/BBJ2 (winglets) with 11.59%.

Best airlines flying from St. Louis to District of Columbia

Compare and see reviews for airlines that fly from St. Louis to District of Columbia with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $90	Free Cancellation	Rating 5.6 2,611 reviews	Search Frontier flights
Delta	PriceFrom $98	Free Cancellation	Rating 7.8 8,553 reviews	Search Delta flights
American Airlines	PriceFrom $235	Free Cancellation	Rating 7.1 12,047 reviews	Search American Airlines flights
Southwest	PriceFrom $250	Free Cancellation	Rating 8.0 4,195 reviews	Search Southwest flights
United Airlines	PriceFrom $271	Free Cancellation	Rating 7.4 10,194 reviews	Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to District of Columbia?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to District of Columbia. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from St. Louis to District of Columbia with flexible booking policies on momondo?

Flights from St. Louis to District of Columbia with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from St. Louis to District of Columbia?

momondo provides multiple filters to help you find the best flight to District of Columbia from St. Louis. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from St. Louis to District of Columbia right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of St. Louis to District of Columbia flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Popular cities in District of Columbia

Flights to New Yorkfrom $63

Flights to Los Angelesfrom $44

Flights to Orlandofrom $58

Flights to Miamifrom $55

Flights to San Franciscofrom $39

Flights to Chicagofrom $50

Flights to Las Vegasfrom $39

Flights to Washington, D.C.from $40

Flights to Fort Lauderdalefrom $40

Flights to Bostonfrom $110

Flights to Atlantafrom $40

Flights to Dallasfrom $50

Cheap flights from St. Louis to District of Columbia from $59

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to District of Columbia departing on 10/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from St. Louis to District of Columbia

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Cheap last minute flights

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Frontier flights from St. Louis to District of Columbia

Our best Frontier deals on St. Louis to District of Columbia flight tickets

American Airlines flights from St. Louis to District of Columbia

Our best American Airlines deals on St. Louis to District of Columbia flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from St. Louis to District of Columbia that are best for you.

See travel insights to District of Columbia from

How to get the cheapest flight ticket from St. Louis to District of Columbia

What is the cheapest month to fly to District of Columbia?

What is the cheapest day to depart on your flight to District of Columbia?

What is the cheapest time of day to depart on your flight to District of Columbia?

What is the cheapest Lambert-St Louis to District of Columbia flight route?

What cabin class options are available on St. Louis to District of Columbia flights?

Can stopping save me money on St. Louis to District of Columbia flights?

What is the cheapest airline that flies from Lambert-St Louis to District of Columbia?

What airlines fly to District of Columbia?

How many flights depart from St. Louis to District of Columbia on average per day?

How many flights depart from St. Louis to District of Columbia on average per week?

Cheap St. Louis to District of Columbia flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Airports in District of Columbia

Frequently asked questions about flying from St. Louis to District of Columbia

Best airlines flying from St. Louis to District of Columbia

Compare and see reviews for airlines that fly from St. Louis to District of Columbia with momondo

Why use momondo?

An easier way to manage your District of Columbia trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to District of Columbia

Popular cities in District of Columbia

Popular flights according to clicks in the last 7 days on momondo

St. Louis flight routes

According to popular flight searches on momondo this year

District of Columbia flight routes

According to popular flight searches on momondo this year

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