How popular is this St. Louis to District of Columbia flight route?

Flights from Lambert-St Louis to District of Columbia have been viewed 9 times in the past calendar month.

What are the cheapest airlines to fly from St. Louis to District of Columbia one-way?

The cheapest airlines for a one-way flight from St. Louis to District of Columbia are Frontier ($96), Southwest ($100), and United Airlines ($100).

What are the cheapest flights from St. Louis to District of Columbia?

Looking for the cheapest flight from St. Louis to District of Columbia? While on average our users pay $278, our data indicates the cheapest price to be $108. The most popular route (Lambert-St Louis - Washington, D.C. Dulles Intl), is priced around $204.

What are the most popular airlines that fly from St. Louis to District of Columbia?

When booking a flight from St. Louis to District of Columbia, you may want to consider flying on American Airlines, Delta or Frontier as they are the most popular for this route.

How far in advance should I book a flight from St. Louis to District of Columbia?

To save up to 177% on this flight, we recommend booking at least 23 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from St. Louis to District of Columbia from $424 1-2 weeks out and tickets from $567 for flights departing within the next 72 hours.

What is the cheapest month to fly from St. Louis to District of Columbia?

November is one of the best times of the year to fly to District of Columbia from St. Louis. Prices for November average $298 per person but you can even find prices for as low as $137. The most expensive prices can be found in the month of March. Opting for a November flight can save you 29% on your journey compared to booking in March

What airport do you fly from for flights from St. Louis to District of Columbia?

If you book a flight to District of Columbia from St. Louis, you will be flying from Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis.

Can I find deals for flights from St. Louis to District of Columbia that include hotel bookings?

Yes. In addition to deals on St. Louis to District of Columbia flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from St. Louis to District of Columbia?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to District of Columbia.

Can I find deals for business class flights from St. Louis to District of Columbia?

Yes. Cheapflights offers flight deals from St. Louis to District of Columbia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$96+ Flights from St. Louis to District of Columbia

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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Cheap flight deals from St. Louis to District of Columbia

Most accurate provider	FlightHub 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$208 (Booking.com)
One-way from	$96 (Mytrip)
Popular in	March
Cheapest in	November
Average price	$312
Good round-trip deal	$245 or less
Good one-way deal	$141 or less

Provider with most accurate pricing for Lambert-St Louis-Washington, D.C. (WAS) flight deals.

Search Deals

Provider most trusted by Cheapflights users for Lambert-St Louis-Washington, D.C. (WAS) flights.

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From Lambert-St Louis to District of Columbia

Search Deals

One-way flight from Lambert-St Louis to District of Columbia

Search Deals

Highest demand for flights based on searches. 10% potential increase in price ($32 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Price to beat on a round-trip flight from Lambert-St Louis to District of Columbia.

Search Deals

Price to beat on a one-way flight from Lambert-St Louis to District of Columbia.

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Find flight deals from St. Louis to District of Columbia

Cheapest flights from St. Louis to District of Columbia
Explore the most affordable flight options available from St. Louis to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 15, 2025.

jue. 5/14:07 pmSTL - DCA

1 stop19h 00mFrontier

dom. 5/47:00 amDCA - STL

1 stop27h 09mFrontier

Deal found 4/13

$208

sáb. 5/243:47 pmSTL - DCA

Nonstop1h 58mAmerican Airlines

dom. 5/251:54 pmDCA - STL

Nonstop2h 17mAmerican Airlines

Deal found 4/14

$213

mié. 5/213:35 pmSTL - DCA

Nonstop2h 00mSouthwest

sáb. 5/242:25 pmDCA - STL

1 stop6h 35mSouthwest

Deal found 4/14

$214

sáb. 5/245:33 pmSTL - IAD

1 stop5h 57mUnited Airlines

dom. 5/255:10 pmIAD - STL

1 stop6h 37mUnited Airlines

Deal found 4/14

$214

jue. 5/297:06 pmSTL - IAD

1 stop4h 22mDelta

sáb. 5/316:00 amIAD - STL

1 stop6h 54mDelta

Deal found 4/13

$217

jue. 4/245:41 pmSTL - IAD

1 stop21h 54mFrontier

sáb. 4/265:35 pmIAD - STL

1 stop7h 29mFrontier

Deal found 4/14

$218

jue. 5/292:15 pmSTL - DCA

1 stop3h 44mDelta

lun. 6/27:33 pmDCA - STL

1 stop5h 05mDelta

Deal found 4/13

$233

sáb. 6/74:17 pmSTL - IAD

1 stop6h 42mAmerican Airlines

sáb. 6/148:14 pmIAD - STL

1 stop4h 45mAmerican Airlines

Deal found 4/15

$297

vie. 6/134:17 pmSTL - IAD

2 stops21h 15mMultiple Airlines

dom. 6/1511:52 amIAD - STL

2 stops28h 30mMultiple Airlines

Deal found 4/14

$353

vie. 4/2510:40 amSTL - DCA

1 stop5h 20mUnited Airlines

mié. 5/2110:30 amDCA - STL

1 stop5h 17mUnited Airlines

Deal found 4/14

$399

lun. 6/307:32 pmSTL - DCA

1 stop25h 27mAlaska Airlines

vie. 7/45:02 pmDCA - STL

2 stops16h 11mAlaska Airlines

Deal found 4/14

$928

Best flights from St. Louis to District of Columbia
Discover carefully curated flight deals from St. Louis to District of Columbia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated abril 15, 2025.

jue. 5/14:07 pmSTL - DCA

1 stop19h 00mFrontier

dom. 5/47:00 amDCA - STL

1 stop27h 09mFrontier

Deal found 4/13

$208

sáb. 5/243:47 pmSTL - DCA

Nonstop1h 58mAmerican Airlines

dom. 5/251:54 pmDCA - STL

Nonstop2h 17mAmerican Airlines

Deal found 4/14

$213

mié. 5/213:35 pmSTL - DCA

Nonstop2h 00mSouthwest

sáb. 5/242:25 pmDCA - STL

1 stop6h 35mSouthwest

Deal found 4/14

$214

sáb. 5/245:33 pmSTL - IAD

1 stop5h 57mUnited Airlines

dom. 5/256:48 amIAD - STL

1 stop4h 57mUnited Airlines

Deal found 4/15

$214

jue. 5/296:45 amSTL - IAD

1 stop4h 21mDelta

sáb. 5/317:15 amIAD - STL

1 stop5h 39mDelta

Deal found 4/14

$217

vie. 6/134:17 pmSTL - IAD

2 stops21h 15mMultiple Airlines

dom. 6/1511:52 amIAD - STL

2 stops28h 30mMultiple Airlines

Deal found 4/14

$353

jue. 4/245:41 pmSTL - IAD

1 stop21h 54mFrontier

sáb. 4/265:35 pmIAD - STL

1 stop7h 29mFrontier

Deal found 4/14

$218

jue. 5/292:15 pmSTL - DCA

1 stop3h 44mDelta

lun. 6/27:33 pmDCA - STL

1 stop5h 05mDelta

Deal found 4/13

$233

sáb. 5/106:47 pmSTL - IAD

1 stop4h 15mAmerican Airlines

mar. 5/135:02 amIAD - STL

2 stops11h 19mAmerican Airlines

Deal found 4/14

$297

vie. 4/2510:40 amSTL - DCA

1 stop5h 20mUnited Airlines

mié. 5/2110:30 amDCA - STL

1 stop5h 17mUnited Airlines

Deal found 4/14

$399

lun. 6/307:32 pmSTL - DCA

1 stop25h 27mAlaska Airlines

vie. 7/45:02 pmDCA - STL

2 stops16h 11mAlaska Airlines

Deal found 4/14

$928

Last-minute flights from St. Louis to District of Columbia
Discover last-minute flight deals from St. Louis to District of Columbia. Data last updated abril 15, 2025 and is based on user searches.

lun. 4/216:51 pmSTL - DCA

1 stop26h 08mFrontier

vie. 4/256:00 pmDCA - STL

1 stop17h 01mFrontier

Deal found 4/14

$242

lun. 4/215:20 pmSTL - DCA

1 stop4h 35mSouthwest

lun. 4/2811:35 amDCA - STL

1 stop7h 25mSouthwest

Deal found 4/13

$504

lun. 4/217:01 pmSTL - IAD

1 stop4h 27mDelta

jue. 5/16:00 amIAD - STL

1 stop4h 28mDelta

Deal found 4/14

$509

lun. 4/215:35 pmSTL - IAD

2 stops16h 37mUnited Airlines

jue. 5/16:22 amIAD - STL

1 stop5h 41mUnited Airlines

Deal found 4/14

$538

jue. 4/245:41 pmSTL - IAD

1 stop21h 54mFrontier

sáb. 4/265:35 pmIAD - STL

1 stop7h 29mFrontier

Deal found 4/14

$218

jue. 4/249:50 amSTL - IAD

3 stops25h 33mMultiple Airlines

dom. 4/2712:17 pmIAD - STL

3 stops32h 53mMultiple Airlines

Deal found 4/14

$632

vie. 4/2510:48 amSTL - DCA

Nonstop2h 02mAmerican Airlines

mié. 5/211:54 pmDCA - STL

Nonstop2h 17mAmerican Airlines

Deal found 4/14

$379

vie. 4/2510:40 amSTL - DCA

1 stop5h 20mUnited Airlines

mié. 5/2110:30 amDCA - STL

1 stop5h 17mUnited Airlines

Deal found 4/14

$399

vie. 4/251:48 pmSTL - IAD

1 stop4h 53mAmerican Airlines

lun. 4/284:52 pmIAD - STL

1 stop5h 32mAmerican Airlines

Deal found 4/14

$469

vie. 4/256:50 amSTL - DCA

1 stop3h 48mDelta

dom. 4/279:41 amDCA - STL

1 stop4h 20mDelta

Deal found 4/14

$509

jue. 5/14:07 pmSTL - DCA

1 stop19h 00mFrontier

dom. 5/47:00 amDCA - STL

1 stop27h 09mFrontier

Deal found 4/13

$208

sáb. 5/106:47 pmSTL - IAD

1 stop4h 15mAmerican Airlines

mar. 5/135:02 amIAD - STL

2 stops11h 19mAmerican Airlines

Deal found 4/14

$297

One-way flights from St. Louis to District of Columbia
Search for one-way flight options from St. Louis to District of Columbia. Find affordable one-way fares based on user searches. Data last updated abril 15, 2025.

mié. 4/236:58 pmSTL - DCA

1 stop16h 11mFrontier

Deal found 4/14

$96

mié. 4/235:41 pmSTL - IAD

1 stop21h 54mFrontier

Deal found 4/14

$96

dom. 5/257:00 amSTL - DCA

1 stop6h 50mSouthwest

Deal found 4/14

$100

mié. 7/25:00 amSTL - IAD

1 stop5h 55mUnited Airlines

Deal found 4/14

$100

dom. 4/206:50 amSTL - DCA

1 stop3h 48mDelta

Deal found 4/14

$109

jue. 5/297:06 pmSTL - IAD

1 stop4h 22mDelta

Deal found 4/15

$109

mié. 5/217:10 amSTL - IAD

1 stop5h 12mAmerican Airlines

Deal found 4/15

$134

dom. 7/65:26 amSTL - DCA

1 stop4h 33mAmerican Airlines

Deal found 4/14

$149

vie. 5/239:50 amSTL - IAD

2 stops27h 49mMultiple Airlines

Deal found 4/14

$152

lun. 5/129:40 amSTL - DCA

1 stop7h 21mUnited Airlines

Deal found 4/15

$160

Cheapflights 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

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

jue. 5/1

4:07 pm-12:07 pm

1 stop19h 00m

Washington, D.C. Reagan-National

dom. 5/4

7:00 am-9:09 am

1 stop27h 09m

$208

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

sáb. 5/24

3:47 pm-6:45 pm

Nonstop1h 58m

Washington, D.C. Reagan-National

dom. 5/25

1:54 pm-3:11 pm

Nonstop2h 17m

$213

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

mié. 5/21

3:35 pm-6:35 pm

Nonstop2h 00m

Washington, D.C. Reagan-National

sáb. 5/24

2:25 pm-8:00 pm

1 stop6h 35m

$214

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

sáb. 5/24

5:33 pm-12:30 am

1 stop5h 57m

Washington, D.C. Dulles Intl

dom. 5/25

5:10 pm-10:47 pm

1 stop6h 37m

$214

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

jue. 5/29

7:06 pm-12:28 am

1 stop4h 22m

Washington, D.C. Dulles Intl

sáb. 5/31

6:00 am-11:54 am

1 stop6h 54m

$217

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

jue. 4/24

5:41 pm-4:35 pm

1 stop21h 54m

Washington, D.C. Dulles Intl

sáb. 4/26

5:35 pm-12:04 am

1 stop7h 29m

$218

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

jue. 5/29

2:15 pm-6:59 pm

1 stop3h 44m

Washington, D.C. Reagan-National

lun. 6/2

7:33 pm-11:38 pm

1 stop5h 05m

$233

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

sáb. 6/7

4:17 pm-11:59 pm

1 stop6h 42m

Washington, D.C. Dulles Intl

sáb. 6/14

8:14 pm-11:59 pm

1 stop4h 45m

$297

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

vie. 6/13

4:17 pm-2:32 pm

2 stops21h 15m

Washington, D.C. Dulles Intl

dom. 6/15

11:52 am-3:22 pm

2 stops28h 30m

$353

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

vie. 4/25

10:40 am-5:00 pm

1 stop5h 20m

Washington, D.C. Reagan-National

mié. 5/21

10:30 am-2:47 pm

1 stop5h 17m

$399

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/14

Showing 1-10 of 21 results

Best time to book a flight from St. Louis to District of Columbia

Have a flexible travel schedule? Discover the best time to fly to District of Columbia from St. Louis with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to District of Columbia

What is the cheapest month to book a flight from St. Louis to District of Columbia?

Currently, August is the cheapest month in which you can book a flight from St. Louis to District of Columbia (average of $241). Flying from St. Louis to District of Columbia in March is currently the most expensive (average of $290). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to DC?

When flying from St. Louis to District of Columbia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in District of Columbia by month

In terms of precipitation, rainfall in District of Columbia ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit District of Columbia when rainfall is around 2.6 in.

Temperature in District of Columbia by month

If weather is an important factor for your trip to District of Columbia, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing District of Columbia

Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from St. Louis to District of Columbia. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

9,871 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Alaska Airlines

8.0

Very good

9,871 reviews

Alaska Airlines

8.0

Very good

9,871 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Southwest

8.0

Very good

4,279 reviews

Alaska Airlines

8.0

Very good

9,871 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Delta

8.0

Very good

7,918 reviews

Alaska Airlines

8.0

Very good

9,871 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

United Airlines

7.4

Good

8,658 reviews

Alaska Airlines

8.0

Very good

9,871 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

9,871 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Related info for your journey

What airport do you fly from for flights from St. Louis to District of Columbia?
If you book a flight to District of Columbia from St. Louis, you will be flying from Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis.
How popular is this St. Louis to District of Columbia flight route?
Flights from Lambert-St Louis to District of Columbia have been viewed 9 times in the past calendar month.
What are the cheapest airlines to fly from St. Louis to District of Columbia one-way?
The cheapest airlines for a one-way flight from St. Louis to District of Columbia are Frontier ($96), Southwest ($100), and United Airlines ($100).
What are the cheapest flights from St. Louis to District of Columbia?
Looking for the cheapest flight from St. Louis to District of Columbia? While on average our users pay $278, our data indicates the cheapest price to be $108. The most popular route (Lambert-St Louis - Washington, D.C. Dulles Intl), is priced around $204.
Can I find deals for flights from St. Louis to District of Columbia that include hotel bookings?
Yes. In addition to deals on St. Louis to District of Columbia flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to District of Columbia?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to District of Columbia.
Can I find deals for business class flights from St. Louis to District of Columbia?
Yes. Cheapflights offers flight deals from St. Louis to District of Columbia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from St. Louis to District of Columbia?
Currently, August is the cheapest month in which you can book a flight from St. Louis to District of Columbia (average of $241). Flying from St. Louis to District of Columbia in March is currently the most expensive (average of $290). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 5 airlines flying from St. Louis to District of Columbia

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$108	Average$190	FlexibilityNo cancel fee	On-time62%
American Airlines	Cheapest$129	Average$321	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$176	Average$309	FlexibilityNo cancel fee	On-timeN/A
Southwest	Cheapest$191	Average$341	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$211	Average$379	FlexibilityNo cancel fee	On-time69%

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$96+ Cheap flights from St. Louis (STL) to District of Columbia

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/23. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to District of Columbia with Cheapflights

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Cheap flight deals from St. Louis to District of Columbia

Keep the following information in mind while searching for St. Louis to District of Columbia flight deals. Data was last updated abril 15, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from St. Louis to District of Columbia

Cheapest flights from St. Louis to District of ColumbiaExplore the most affordable flight options available from St. Louis to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 15, 2025.

Explore the most affordable flight options available from St. Louis to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 15, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from St. Louis to District of Columbia

Have a flexible travel schedule? Discover the best time to fly to District of Columbia from St. Louis with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to District of Columbia

What is the cheapest month to book a flight from St. Louis to District of Columbia?

What is the cheapest time of day to fly from STL to DC?

Find hourly flight availability from St. Louis to District of Columbia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated abril 15, 2025.

Rainfall in District of Columbia by month

Plan your trip to District of Columbia by taking into account the average rainfall totals by month.

Temperature in District of Columbia by month

Plan your trip to District of Columbia by taking into account the average temperature totals by month.

Reviews of airlines servicing District of Columbia

Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from St. Louis to District of Columbia. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to District of Columbia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from St. Louis to District of Columbia?

How popular is this St. Louis to District of Columbia flight route?

What are the cheapest airlines to fly from St. Louis to District of Columbia one-way?

What are the cheapest flights from St. Louis to District of Columbia?

Can I find deals for flights from St. Louis to District of Columbia that include hotel bookings?

How can I find direct flights from St. Louis to District of Columbia?

Can I find deals for business class flights from St. Louis to District of Columbia?

What is the cheapest month to book a flight from St. Louis to District of Columbia?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to District of Columbia

See prices for flight routes from nearby airports that may be better suited for you.

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Cheapest flights from St. Louis to District of Columbia
Explore the most affordable flight options available from St. Louis to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 15, 2025.