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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 1/18. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — STL
Dec 24 — Dec 311
Tue 12/24
Tue 12/31
1 adult, Economy
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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 December 19, 2024.

Round-trip from

$233
(CheapOair)

One-way from

$115
(United Airlines)
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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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 December 19, 2024.

This Gotogate deal was found by Cheapflights users on 12/18. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/316:00 pmDCA - STL
1 stop15h 13mFrontier
Thu 1/210:09 pmSTL - DCA
1 stop12h 59mFrontier
Deal found 12/18$318
This Southwest deal was found by Cheapflights users on 12/18. 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.
Mon 12/234:00 pmDCA - STL
1 stop4h 55mSouthwest
Wed 1/83:40 pmSTL - DCA
Nonstop2h 00mSouthwest
Deal found 12/18$440
This American Airlines deal was found by Cheapflights users on 12/18. 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.
Mon 12/308:10 pmDCA - STL
Nonstop2h 35mAmerican Airlines
Thu 1/26:15 amSTL - DCA
Nonstop2h 04mAmerican Airlines
Deal found 12/18$444
This American Airlines deal was found by Cheapflights users on 12/18. 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.
Mon 12/301:53 pmIAD - STL
1 stop6h 07mAmerican Airlines
Thu 1/25:58 pmSTL - IAD
1 stop5h 04mAmerican Airlines
Deal found 12/18$463
This United Airlines deal was found by Cheapflights users on 12/18. 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.
Mon 12/236:50 pmIAD - STL
Nonstop2h 33mUnited Airlines
Wed 1/811:30 amSTL - IAD
1 stop6h 13mUnited Airlines
Deal found 12/18$479
This Delta deal was found by Cheapflights users on 12/18. 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.
Mon 12/235:27 pmIAD - STL
1 stop5h 08mDelta
Wed 1/85:50 pmSTL - IAD
1 stop4h 26mDelta
Deal found 12/18$488
This Delta deal was found by Cheapflights users on 12/18. 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.
Sat 12/217:55 pmDCA - STL
1 stop4h 45mDelta
Fri 1/105:50 pmSTL - DCA
1 stop4h 33mDelta
Deal found 12/18$488
This United Airlines deal was found by Cheapflights users on 12/18. 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.
Wed 12/258:30 amDCA - STL
1 stop6h 54mUnited Airlines
Wed 1/86:30 amSTL - DCA
1 stop4h 29mUnited Airlines
Deal found 12/18$593
This Gotogate deal was found by Cheapflights users on 12/18. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/208:20 amIAD - STL
1 stop16h 20mFrontier
Mon 12/235:45 pmSTL - IAD
1 stop12h 30mFrontier
Deal found 12/18$603
This Mytrip deal was found by Cheapflights users on 12/18. 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.
Mon 12/2312:45 pmIAD - STL
3 stops27h 36mMultiple Airlines
Mon 12/309:50 amSTL - IAD
3 stops22h 02mMultiple Airlines
Deal found 12/18$668
This Alaska Airlines deal was found by Cheapflights users on 12/18. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/318:00 amDCA - STL
2 stops26h 36mAlaska Airlines
Thu 1/22:23 pmSTL - DCA
1 stop25h 17mAlaska Airlines
Deal found 12/18$1,748

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 December 19, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Thu 1/2

7:00 am-8:13 am

1 stop26h 13m

Lambert-St Louis

Sun 1/5

10:09 pm-12:08 pm

1 stop12h 59m

$233

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Wed 1/8

8:25 am-12:16 pm

1 stop4h 51m

Lambert-St Louis

Sat 1/11

8:15 am-11:33 am

Nonstop2h 18m

$239

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Mon 1/13

5:15 pm-10:10 pm

1 stop5h 55m

Lambert-St Louis

Tue 1/14

3:40 pm-6:40 pm

Nonstop2h 00m

$239

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Wed 1/15

10:00 am-3:44 pm

1 stop6h 44m

Lambert-St Louis

Mon 1/20

6:05 am-1:00 pm

1 stop5h 55m

$248

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Sun 4/13

6:45 am-8:20 am

Nonstop2h 35m

Lambert-St Louis

Sat 4/19

6:28 am-9:29 am

Nonstop2h 01m

$249

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Tue 1/14

12:52 pm-6:45 pm

1 stop6h 53m

Lambert-St Louis

Mon 1/20

5:50 pm-11:16 pm

1 stop4h 26m

$262

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Fri 1/17

8:05 pm-11:46 pm

1 stop4h 41m

Lambert-St Louis

Mon 1/20

7:18 am-1:23 pm

1 stop5h 05m

$276

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Sat 4/12

12:00 pm-3:21 pm

1 stop4h 21m

Lambert-St Louis

Sat 4/19

6:45 am-11:57 am

1 stop4h 12m

$332

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Wed 1/15

6:57 pm-1:53 pm

1 stop19h 56m

Lambert-St Louis

Tue 1/21

2:49 pm-5:57 pm

1 stop26h 08m

$570

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Fri 1/24

8:00 am-11:59 pm

1 stop16h 59m

Lambert-St Louis

Wed 1/29

2:49 pm-4:29 pm

1 stop24h 40m

$663

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/18

Showing 1-10 of 21 results
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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 December 19, 2024.

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.

Weekly flight availability from District of Columbia to St. Louis

Explore weekly flight availability from District of Columbia to St. Louis. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated December 19, 2024.

The most flights from USDC to STL are scheduled on a Monday (5 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (5 on average).

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 December 19, 2024.
See what other customers who have flown with Frontier, United Airlines and Southwest 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
4,836 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Crew

8.7

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
4,836 reviews
Southwest
8.1
Very good
4,836 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Crew

8.7

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.

Alaska Airlines
8.0
Very good
9,552 reviews
Southwest
8.1
Very good
4,836 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Crew

8.7

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
8,600 reviews
Southwest
8.1
Very good
4,836 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Crew

8.7

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
9,048 reviews
Southwest
8.1
Very good
4,836 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Crew

8.7

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
4,836 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Crew

8.7

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.

  • 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 $122 one-way.

  • What are the most reliable airlines from District of Columbia to St. Louis?

    No one likes to see their flight delayed. When booking a flight from District of Columbia to St. Louis consider choosing Copa Airlines (89%), GoJet (88%) or Avianca (88%) as they are the most reliable in getting you off to your destination on time.

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

    Looking at all options, your cheapest flight can be booked for $156. While the most popular route (Washington, D.C. Dulles Intl - Lambert-St Louis) can be booked for $188 on average our data indicates $340 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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Alternative routes for District of Columbia to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
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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 December 19, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$98Average$172FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$133Average$186FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$158Average$442FlexibilityNo cancel feeOn-time69%
DeltaCheapest$175Average$333FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$183Average$362FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$219Average$368FlexibilityNo cancel feeOn-time63%
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