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

Flights from District of Columbia to Lambert-St Louis have been viewed 13 times in the past calendar month.

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

One-way options have recently been found by users for as low as $115 on United Airlines. Other airlines that offer cheap prices include American Airlines from $115 and Southwest from $120 one-way.

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

Looking at all options, your cheapest flight can be booked for $98. While the most popular route (Washington, D.C. Dulles Intl - Lambert-St Louis) can be booked for $177 on average our data indicates $298 when flying from District of Columbia to St. Louis.

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

American Airlines, Delta and Frontier are the most popular airlines when flying from District of Columbia to St. Louis.

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

Find a great deal and save up to 160% by booking at least 29 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from District of Columbia to St. Louis within the next two weeks, with the cheapest ticket starting at $414.

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

The best pricing can be found in the month of August. Prices to St. Louis from District of Columbia average $332. You can even find prices in August for less than $332, as users have found deals to St. Louis from as low as $169. The month of March appears to be one of the more expensive times to travel to St. Louis from District of Columbia. Flying in the targeted month can save you up to 12%.

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

Located just 12.7 mi from the city center, Lambert-St Louis (STL) is the airport most travelers will use when flying to St. Louis from District of Columbia.

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

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

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

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

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

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

$115+ Flights from District of Columbia to St. Louis

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Cheap flight deals from District of Columbia to St. Louis

Round-trip from	$206 (American Airlines)
One-way from	$115 (United Airlines)
Popular in	March
Cheapest in	August
Average price	$340
Good round-trip deal	$238 or less
Good one-way deal	$166 or less

From District of Columbia to Lambert-St Louis

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

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Highest demand for flights based on searches. 6% potential increase in price ($22 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).

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Average for round-trip flights in June 2025

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

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

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Find flight deals from District of Columbia to St. Louis

Cheapest flights from District of Columbia to St. Louis
Explore the most affordable flight options available from District of Columbia to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

Fri 7/42:59 pmDCA - STL

Nonstop2h 29mAmerican Airlines

Tue 7/86:00 amSTL - DCA

Nonstop2h 10mAmerican Airlines

Deal found 6/10

$206

Sat 9/276:10 amIAD - STL

1 stop4h 25mDelta

Mon 9/295:40 pmSTL - IAD

1 stop5h 27mDelta

Deal found 6/11

$208

Sat 9/610:11 amDCA - STL

1 stop5h 17mDelta

Mon 9/85:11 pmSTL - DCA

1 stop5h 35mDelta

Deal found 6/12

$208

Wed 7/306:35 amIAD - STL

1 stop6h 52mUnited Airlines

Wed 8/66:33 amSTL - IAD

1 stop4h 22mUnited Airlines

Deal found 6/10

$213

Wed 7/308:30 amDCA - STL

1 stop4h 57mUnited Airlines

Wed 8/65:00 amSTL - DCA

1 stop4h 56mUnited Airlines

Deal found 6/10

$213

Mon 6/306:35 pmDCA - STL

Nonstop2h 15mSouthwest

Wed 7/25:45 pmSTL - DCA

1 stop5h 05mSouthwest

Deal found 6/10

$214

Sat 7/266:10 amIAD - STL

1 stop8h 49mFrontier

Sat 8/22:52 pmSTL - IAD

1 stop7h 27mFrontier

Deal found 6/11

$221

Thu 9/182:10 pmIAD - STL

1 stop6h 35mSouthwest

Sun 9/2110:05 amSTL - IAD

2 stops13h 50mSouthwest

Deal found 6/9

$265

Thu 7/36:00 pmDCA - STL

1 stop16h 12mFrontier

Mon 7/77:29 pmSTL - DCA

1 stop15h 35mFrontier

Deal found 6/10

$270

Tue 8/267:44 amIAD - STL

2 stops14h 06mAmerican Airlines

Wed 8/278:40 amSTL - IAD

1 stop5h 39mAmerican Airlines

Deal found 6/11

$289

Thu 7/2411:58 amIAD - STL

2 stops7h 43mMultiple Airlines

Sat 7/269:50 amSTL - IAD

2 stops24h 18mMultiple Airlines

Deal found 6/11

$290

Best flights from District of Columbia to St. Louis
Discover carefully curated flight deals from District of Columbia to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 12, 2025.

Fri 7/42:59 pmDCA - STL

Nonstop2h 29mAmerican Airlines

Tue 7/86:00 amSTL - DCA

Nonstop2h 10mAmerican Airlines

Deal found 6/10

$206

Sat 9/68:00 amDCA - STL

1 stop5h 31mDelta

Mon 9/85:11 pmSTL - DCA

1 stop5h 35mDelta

Deal found 6/10

$208

Wed 7/306:35 amIAD - STL

1 stop6h 52mUnited Airlines

Wed 8/66:33 amSTL - IAD

1 stop4h 22mUnited Airlines

Deal found 6/10

$213

Mon 6/306:35 pmDCA - STL

Nonstop2h 15mSouthwest

Wed 7/25:45 pmSTL - DCA

1 stop5h 05mSouthwest

Deal found 6/10

$214

Sat 7/266:10 amIAD - STL

1 stop8h 49mFrontier

Sat 8/22:52 pmSTL - IAD

1 stop7h 27mFrontier

Deal found 6/11

$221

Thu 7/2411:58 amIAD - STL

2 stops7h 43mMultiple Airlines

Sat 7/269:50 amSTL - IAD

2 stops24h 18mMultiple Airlines

Deal found 6/11

$290

Wed 7/308:30 amDCA - STL

1 stop4h 57mUnited Airlines

Wed 8/65:00 amSTL - DCA

1 stop4h 56mUnited Airlines

Deal found 6/10

$213

Wed 7/306:00 amIAD - STL

1 stop4h 33mDelta

Mon 8/43:41 pmSTL - IAD

1 stop5h 35mDelta

Deal found 6/11

$223

Thu 7/36:00 pmDCA - STL

1 stop16h 12mFrontier

Mon 7/77:29 pmSTL - DCA

1 stop15h 35mFrontier

Deal found 6/10

$270

Tue 8/267:44 amIAD - STL

2 stops14h 06mAmerican Airlines

Wed 8/278:40 amSTL - IAD

1 stop5h 39mAmerican Airlines

Deal found 6/11

$289

Wed 7/307:25 amIAD - STL

2 stops12h 30mSouthwest

Wed 8/66:20 amSTL - IAD

1 stop8h 55mSouthwest

Deal found 6/10

$303

Last-minute flights from District of Columbia to St. Louis
Discover last-minute flight deals from District of Columbia to St. Louis. Data last updated June 12, 2025 and is based on user searches.

Tue 6/177:00 amDCA - STL

1 stop27h 12mFrontier

Fri 6/207:29 pmSTL - DCA

1 stop15h 31mFrontier

Deal found 6/11

$389

Tue 6/178:14 pmIAD - STL

1 stop4h 45mAmerican Airlines

Tue 6/244:41 pmSTL - IAD

1 stop6h 18mAmerican Airlines

Deal found 6/10

$469

Wed 6/187:25 amIAD - STL

1 stop6h 35mSouthwest

Fri 6/209:30 amSTL - IAD

2 stops8h 35mSouthwest

Deal found 6/9

$554

Thu 6/196:00 pmDCA - STL

1 stop5h 45mUnited Airlines

Wed 6/256:30 amSTL - DCA

1 stop4h 29mUnited Airlines

Deal found 6/10

$469

Thu 6/1911:52 amIAD - STL

2 stops7h 49mMultiple Airlines

Sat 6/219:50 amSTL - IAD

2 stops10h 02mMultiple Airlines

Deal found 6/11

$555

Fri 6/208:00 amDCA - STL

Nonstop2h 26mAmerican Airlines

Tue 7/16:00 amSTL - DCA

Nonstop2h 05mAmerican Airlines

Deal found 6/11

$354

Fri 6/203:31 pmIAD - STL

1 stop7h 03mDelta

Tue 7/110:48 amSTL - IAD

1 stop4h 45mDelta

Deal found 6/11

$409

Fri 6/206:05 amDCA - STL

1 stop4h 32mDelta

Tue 7/15:23 pmSTL - DCA

1 stop5h 23mDelta

Deal found 6/11

$409

Fri 6/208:00 amDCA - STL

1 stop11h 35mAlaska Airlines

Sun 6/226:41 amSTL - DCA

1 stop14h 18mAlaska Airlines

Deal found 6/11

$2,159

Sat 6/211:29 pmIAD - STL

1 stop11h 24mFrontier

Sun 6/228:44 pmSTL - IAD

1 stop12h 25mFrontier

Deal found 6/10

$282

Sat 6/218:40 amIAD - STL

Nonstop2h 16mUnited Airlines

Tue 6/248:15 amSTL - IAD

Nonstop2h 08mUnited Airlines

Deal found 6/9

$449

Sat 6/216:55 amDCA - STL

2 stops9h 10mSouthwest

Tue 6/247:40 amSTL - DCA

1 stop5h 40mSouthwest

Deal found 6/9

$509

One-way flights from District of Columbia to St. Louis
Search for one-way flight options from District of Columbia to St. Louis. Find affordable one-way fares based on user searches. Data last updated June 12, 2025.

Wed 8/138:40 amIAD - STL

Nonstop2h 19mUnited Airlines

Deal found 6/10

$115

Thu 7/247:44 amDCA - STL

Nonstop2h 26mAmerican Airlines

Deal found 6/12

$115

Mon 9/110:30 amDCA - STL

1 stop6h 14mUnited Airlines

Deal found 6/10

$117

Fri 9/53:40 pmDCA - STL

1 stop4h 05mSouthwest

Deal found 6/11

$120

Sat 8/96:34 amIAD - STL

1 stop6h 37mAmerican Airlines

Deal found 6/11

$126

Thu 8/1411:04 amIAD - STL

2 stops21h 45mMultiple Airlines

Deal found 6/10

$129

Tue 9/95:45 amIAD - STL

2 stops13h 05mSouthwest

Deal found 6/10

$135

Thu 7/106:00 amDCA - STL

1 stop4h 41mDelta

Deal found 6/10

$135

Sun 7/1310:00 amIAD - STL

1 stop10h 31mSun Country Air

Deal found 6/10

$138

Tue 6/241:00 pmDCA - STL

1 stop21h 12mFrontier

Deal found 6/9

$141

Thu 6/266:10 amIAD - STL

1 stop8h 30mFrontier

Deal found 6/11

$158

Thu 7/246:00 amIAD - STL

1 stop4h 33mDelta

Deal found 6/10

$160

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Fri 7/4

2:59 pm-4:28 pm

Nonstop2h 29m

Lambert-St Louis

Tue 7/8

6:00 am-9:10 am

Nonstop2h 10m

$206

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Sat 9/27

6:10 am-9:35 am

1 stop4h 25m

Lambert-St Louis

Mon 9/29

5:40 pm-12:07 am

1 stop5h 27m

$208

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Sat 9/6

10:11 am-2:28 pm

1 stop5h 17m

Lambert-St Louis

Mon 9/8

5:11 pm-11:46 pm

1 stop5h 35m

$208

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Wed 7/30

6:35 am-12:27 pm

1 stop6h 52m

Lambert-St Louis

Wed 8/6

6:33 am-11:55 am

1 stop4h 22m

$213

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Wed 7/30

8:30 am-12:27 pm

1 stop4h 57m

Lambert-St Louis

Wed 8/6

5:00 am-10:56 am

1 stop4h 56m

$213

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Mon 6/30

6:35 pm-7:50 pm

Nonstop2h 15m

Lambert-St Louis

Wed 7/2

5:45 pm-11:50 pm

1 stop5h 05m

$214

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Sat 7/26

6:10 am-1:59 pm

1 stop8h 49m

Lambert-St Louis

Sat 8/2

2:52 pm-11:19 pm

1 stop7h 27m

$221

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Thu 9/18

2:10 pm-7:45 pm

1 stop6h 35m

Lambert-St Louis

Sun 9/21

10:05 am-12:55 am

2 stops13h 50m

$265

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Thu 7/3

6:00 pm-9:12 am

1 stop16h 12m

Lambert-St Louis

Mon 7/7

7:29 pm-12:04 pm

1 stop15h 35m

$270

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Tue 8/26

7:44 am-8:50 pm

2 stops14h 06m

Lambert-St Louis

Wed 8/27

8:40 am-3:19 pm

1 stop5h 39m

$289

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 23 results

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

Have a flexible travel schedule? Discover the best time to fly to St. Louis from District of Columbia 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 District of Columbia to St. Louis

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

Currently, August is the cheapest month in which you can book a flight from District of Columbia to St. Louis (average of $311). Flying from District of Columbia to St. Louis in March is currently the most expensive (average of $356). 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 DC to STL?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from District of Columbia to St. Louis as you normally would.

Rainfall in St. Louis by month

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

If weather is an important factor for your trip to St. Louis, 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 32.0 F).

Reviews of airlines servicing St. Louis

See what other customers who have flown with Southwest, Delta and United Airlines from District of Columbia to St. Louis have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,287 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Southwest

8.0

Very good

4,287 reviews

Southwest

8.0

Very good

4,287 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Delta

8.0

Very good

7,950 reviews

Southwest

8.0

Very good

4,287 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

United Airlines

7.4

Good

8,790 reviews

Southwest

8.0

Very good

4,287 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

American Airlines

7.2

Good

10,000 reviews

Southwest

8.0

Very good

4,287 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Sun Country Air

6.9

Okay

345 reviews

Southwest

8.0

Very good

4,287 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Related info for your journey

What airport do you fly into for flights to St. Louis from District of Columbia?
Located just 12.7 mi from the city center, Lambert-St Louis (STL) is the airport most travelers will use when flying to St. Louis from District of Columbia.
How popular is this District of Columbia to St. Louis flight route?
Flights from District of Columbia to Lambert-St Louis have been viewed 13 times in the past calendar month.
What are the cheapest airlines to fly from District of Columbia to St. Louis one-way?
One-way options have recently been found by users for as low as $115 on United Airlines. Other airlines that offer cheap prices include American Airlines from $115 and Southwest from $120 one-way.
What are the cheapest flights from District of Columbia to St. Louis?
Looking at all options, your cheapest flight can be booked for $98. While the most popular route (Washington, D.C. Dulles Intl - Lambert-St Louis) can be booked for $177 on average our data indicates $298 when flying from District of Columbia to St. Louis.
Can I find deals for flights from District of Columbia to St. Louis that include hotel bookings?
Yes. In addition to deals on District of Columbia to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from District of Columbia to St. Louis?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from District of Columbia to St. Louis.
Can I find deals for business class flights from District of Columbia to St. Louis?
Yes. Cheapflights offers flight deals from District of Columbia to St. Louis 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 District of Columbia to St. Louis?
Currently, August is the cheapest month in which you can book a flight from District of Columbia to St. Louis (average of $311). Flying from District of Columbia to St. Louis in March is currently the most expensive (average of $356). 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

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Eureka

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Glencoe

Festus

Alton

Farmington

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

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$108	Average$221	FlexibilityNo cancel fee	On-time62%
American Airlines	Cheapest$166	Average$312	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$169	Average$289	FlexibilityNo cancel fee	On-timeN/A
Southwest	Cheapest$197	Average$350	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$223	Average$400	FlexibilityNo cancel fee	On-time69%

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$115+ Cheap flights from District of Columbia to St. Louis (STL)

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 7/15. Fares are subject to change and may not be available on all flights or dates of travel.

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

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2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from District of Columbia to St. Louis

Keep the following information in mind while searching for District of Columbia to St. Louis flight deals. Data was last updated June 12, 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from District of Columbia to St. Louis

Cheapest flights from District of Columbia to St. LouisExplore the most affordable flight options available from District of Columbia to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

Explore the most affordable flight options available from District of Columbia to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

Cheapflights Fare Finder

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

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

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

Cheapflights Insights

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

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

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

Find hourly flight availability from District of Columbia to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

Reviews of airlines servicing St. Louis

See what other customers who have flown with Southwest, Delta and United Airlines from District of Columbia to St. Louis have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from District of Columbia to St. Louis. 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 into for flights to St. Louis from District of Columbia?

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

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

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

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

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

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

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

Traveling to a place near District of Columbia?

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Alternative routes for District of Columbia to St. Louis

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

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Cheapest flights from District of Columbia to St. Louis
Explore the most affordable flight options available from District of Columbia to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.