HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
St. Louis

$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 2/23. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — STL
ene. 28 — feb. 41
mar. 1/28
mar. 2/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

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

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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from District of Columbia to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from District of Columbia (USDC) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated enero 23, 2025.

Round-trip from

$231
(United Airlines)

One-way from

$115
(United Airlines)

Good round-trip deal

$288 or less

Good one-way deal

$148 or less
From District of Columbia to Lambert-St Louis
Search Deals
One-way flight from District of Columbia to Lambert-St Louis
Search Deals
Price to beat on a round-trip flight from District of Columbia to Lambert-St Louis.
Search Deals
Price to beat on a one-way flight from District of Columbia to Lambert-St Louis.
Search Deals

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 enero 23, 2025.

This United Airlines deal was found by Cheapflights users on 1/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/278:35 amIAD - STL
Nonstop2h 30mUnited Airlines
sáb. 3/111:20 amSTL - IAD
1 stop6h 41mUnited Airlines
Deal found 1/22$231
This Southwest deal was found by Cheapflights users on 1/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/136:05 amDCA - STL
1 stop6h 05mSouthwest
dom. 2/168:45 amSTL - DCA
Nonstop1h 55mSouthwest
Deal found 1/22$233
This American Airlines deal was found by Cheapflights users on 1/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 2/219:14 pmDCA - STL
Nonstop2h 30mAmerican Airlines
lun. 2/244:38 pmSTL - DCA
1 stop4h 30mAmerican Airlines
Deal found 1/22$237
This Delta deal was found by Cheapflights users on 1/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 2/216:00 amIAD - STL
1 stop4h 36mDelta
dom. 2/237:07 pmSTL - IAD
1 stop4h 13mDelta
Deal found 1/23$243
This Delta deal was found by Cheapflights users on 1/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/136:00 amDCA - STL
1 stop6h 46mDelta
lun. 2/175:59 pmSTL - DCA
1 stop12h 38mDelta
Deal found 1/22$243
This Mytrip deal was found by Cheapflights users on 1/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 1/307:00 amDCA - STL
1 stop27h 16mFrontier
sáb. 2/17:09 pmSTL - DCA
1 stop15h 57mFrontier
Deal found 1/22$251
This FlightHub deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 3/16:03 pmIAD - STL
1 stop6h 40mFrontier
dom. 3/25:20 pmSTL - IAD
1 stop22h 53mFrontier
Deal found 1/21$266
This United Airlines deal was found by Cheapflights users on 1/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 6/269:45 amDCA - STL
1 stop5h 33mUnited Airlines
sáb. 6/286:45 amSTL - DCA
1 stop4h 00mUnited Airlines
Deal found 1/23$266
This American Airlines deal was found by Cheapflights users on 1/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/171:52 pmIAD - STL
1 stop5h 00mAmerican Airlines
jue. 3/206:32 pmSTL - IAD
1 stop4h 26mAmerican Airlines
Deal found 1/22$277
This Mytrip deal was found by Cheapflights users on 1/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/175:40 pmIAD - STL
3 stops24h 02mMultiple Airlines
jue. 3/209:50 amSTL - IAD
3 stops25h 44mMultiple Airlines
Deal found 1/22$410

Find flights from District of Columbia to St. Louis within your budget

Customize your flight search to find flights from District of Columbia to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated enero 23, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

jue. 2/27

8:35 am-10:05 am

Nonstop2h 30m

Lambert-St Louis

sáb. 3/1

11:20 am-7:01 pm

1 stop6h 41m

$231

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

jue. 2/13

6:05 am-11:10 am

1 stop6h 05m

Lambert-St Louis

dom. 2/16

8:45 am-11:40 am

Nonstop1h 55m

$233

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

vie. 2/21

6:00 am-9:52 am

1 stop4h 52m

Lambert-St Louis

vie. 2/28

6:04 am-9:19 am

Nonstop2h 15m

$237

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

vie. 2/21

6:00 am-9:36 am

1 stop4h 36m

Lambert-St Louis

dom. 2/23

7:07 pm-12:20 am

1 stop4h 13m

$243

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

jue. 2/13

6:00 am-11:46 am

1 stop6h 46m

Lambert-St Louis

lun. 2/17

5:59 pm-7:37 am

1 stop12h 38m

$243

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

sáb. 3/1

6:03 pm-11:43 pm

1 stop6h 40m

Lambert-St Louis

dom. 3/2

5:20 pm-5:13 pm

1 stop22h 53m

$266

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

jue. 6/26

9:45 am-2:18 pm

1 stop5h 33m

Lambert-St Louis

sáb. 6/28

6:45 am-11:45 am

1 stop4h 00m

$266

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

lun. 3/17

1:52 pm-5:52 pm

1 stop5h 00m

Lambert-St Louis

jue. 3/20

6:32 pm-11:58 pm

1 stop4h 26m

$277

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

lun. 3/17

5:40 pm-4:42 pm

3 stops24h 02m

Lambert-St Louis

jue. 3/20

9:50 am-12:34 pm

3 stops25h 44m

$410

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

dom. 2/23

8:35 am-10:05 am

Nonstop2h 30m

$115

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/23

Showing 1-10 of 21 results
1
2
3

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.

Travel insights for flights from District of Columbia to St. Louis

Get recent, data-driven insights about flights from District of Columbia to St. Louis including ideal travel times, pricing trends, and more.

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?

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 enero 23, 2025.

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

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

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

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated enero 23, 2025.
See what other customers who have flown with United Airlines, Southwest and American 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
8.1
Very good
4,654 reviews

Crew

8.7

Boarding

8.2

Overall

8.1

Comfort

8.1

Entertainment

7.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,654 reviews
Southwest
8.1
Very good
4,654 reviews

Crew

8.7

Boarding

8.2

Overall

8.1

Comfort

8.1

Entertainment

7.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,512 reviews
Southwest
8.1
Very good
4,654 reviews

Crew

8.7

Boarding

8.2

Overall

8.1

Comfort

8.1

Entertainment

7.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
8,975 reviews
Southwest
8.1
Very good
4,654 reviews

Crew

8.7

Boarding

8.2

Overall

8.1

Comfort

8.1

Entertainment

7.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,654 reviews

Crew

8.7

Boarding

8.2

Overall

8.1

Comfort

8.1

Entertainment

7.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Frontier
6.1
Okay
3,441 reviews
Southwest
8.1
Very good
4,654 reviews

Crew

8.7

Boarding

8.2

Overall

8.1

Comfort

8.1

Entertainment

7.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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?

    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 4 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 Delta from $119 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 $159. While the most popular route (Washington, D.C. Dulles Intl - Lambert-St Louis) can be booked for $155 on average our data indicates $354 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

Traveling to a place near District of Columbia?

Book flights to District of Columbia if you plan to visit one of these locations
Fenton
Fairview Heights
Maryland Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Alton
Farmington
Chesterfield

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 District of Columbia to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
Buffalo to Kansas City flights
LaGuardia to Kansas City flights
Newark to Kansas City flights
Newark to St. Louis flights
Rochester to Kansas City flights
Los Angeles to Kansas City flights
Dulles Intl to Kansas City flights
Reagan-National to Kansas City flights
O'Hare Intl to Kansas City flights
Dallas/Fort Worth to Kansas City flights
LaGuardia to St. Louis flights
Denver to Kansas City flights
Boston to Kansas City flights
Orlando to Kansas City flights
Hobby to Kansas City flights
John F Kennedy Intl to St. Louis flights
Dulles Intl to St. Louis flights
Dallas/Fort Worth to St. Louis flights
San Francisco to Kansas City flights
Baltimore to Kansas City flights
John F Kennedy Intl to Kansas City flights
Seattle to Kansas City flights
Denver to St. Louis flights
Boston to St. Louis flights
George Bush Intcntl to Kansas City flights
Los Angeles to St. Louis flights
Orlando to St. Louis flights
Atlanta to Kansas City flights
Atlanta to St. Louis flights
O'Hare Intl to St. Louis flights
Philadelphia to St. Louis flights
Seattle to St. Louis flights
Minneapolis to Kansas City flights
Syracuse to Kansas City flights
Ontario to Kansas City flights
Fort Lauderdale to Kansas City flights
Sky Harbor Intl to St. Louis flights
Tampa to Kansas City flights
San Francisco to St. Louis flights
Salt Lake City to Kansas City flights
Midway to Kansas City flights
Philadelphia to Kansas City flights
Miami to Kansas City flights
Las Vegas to Kansas City flights
Sky Harbor Intl to Kansas City flights
Reagan-National to St. Louis flights
Detroit to Kansas City flights
Charlotte to Kansas City flights
Minneapolis to St. Louis flights
Love Field to Kansas City flights

Top 6 airlines flying from District of Columbia to St. Louis

Discover the top 6 airlines that operate flights from District of Columbia to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated enero 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$98Average$167FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$133Average$189FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$158Average$440FlexibilityNo cancel feeOn-time69%
DeltaCheapest$175Average$319FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$183Average$358FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$220Average$369FlexibilityNo cancel feeOn-time63%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.