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 $96 on Frontier. Other airlines that offer cheap prices include Delta from $99 and Southwest from $104 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 $216. While the most popular route (Washington, D.C. Dulles Intl - Lambert-St Louis) can be booked for $141 on average our data indicates $389 when flying from District of Columbia to St. Louis.

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 GoJet (77%), Avianca (77%) or Copa Airlines (77%) as they are the most reliable in getting you off to your destination on time.

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

American Airlines, Delta and United Airlines 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 174% by booking at least 45 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 $328. You can even find prices in August for less than $328, as users have found deals to St. Louis from as low as $185. 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 14%.

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.

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

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Cheap flight deals from District of Columbia to St. Louis

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$234 (Booking.com)
One-way from	$96 (Booking.com)
Popular in	March
Cheapest in	August
Average price	$369
Good round-trip deal	$290 or less
Good one-way deal	$153 or less

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

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

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From District of Columbia to Lambert-St Louis

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

Search Deals

Highest demand for flights based on searches. 6% potential increase in price ($21 potential increase over avg. RT price).

Search Deals

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

Search Deals

Average for round-trip flights in February 2025

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.

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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 February 20, 2025.

Fri 5/305:23 pmIAD - STL

1 stop7h 14mFrontier

Sun 6/15:22 pmSTL - IAD

1 stop22h 01mFrontier

Deal found 2/20

$234

Sat 4/267:35 amIAD - STL

1 stop5h 10mDelta

Tue 4/296:50 amSTL - IAD

1 stop3h 41mDelta

Deal found 2/20

$237

Wed 4/96:00 amDCA - STL

1 stop6h 56mDelta

Mon 4/144:05 pmSTL - DCA

1 stop4h 31mDelta

Deal found 2/20

$237

Mon 4/74:05 pmDCA - STL

1 stop4h 55mSouthwest

Wed 4/910:15 amSTL - DCA

2 stops6h 45mSouthwest

Deal found 2/18

$238

Wed 7/28:15 amIAD - STL

1 stop5h 05mUnited Airlines

Sat 7/58:25 amSTL - IAD

Nonstop2h 06mUnited Airlines

Deal found 2/20

$240

Sun 3/168:58 pmDCA - STL

Nonstop2h 24mAmerican Airlines

Sat 3/224:26 pmSTL - DCA

1 stop5h 49mAmerican Airlines

Deal found 2/20

$243

Sun 6/110:30 amDCA - STL

1 stop6h 00mUnited Airlines

Wed 6/45:27 pmSTL - DCA

1 stop4h 15mUnited Airlines

Deal found 2/20

$250

Wed 5/149:21 amIAD - STL

1 stop4h 31mAmerican Airlines

Sat 5/176:47 pmSTL - IAD

1 stop4h 16mAmerican Airlines

Deal found 2/20

$257

Tue 2/257:00 amDCA - STL

1 stop27h 16mFrontier

Wed 2/267:04 pmSTL - DCA

1 stop20h 55mFrontier

Deal found 2/19

$258

Mon 5/52:10 pmIAD - STL

1 stop10h 55mSouthwest

Thu 5/85:20 amSTL - IAD

1 stop7h 05mSouthwest

Deal found 2/20

$292

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 February 20, 2025.

Fri 5/305:23 pmIAD - STL

1 stop7h 14mFrontier

Sun 6/15:22 pmSTL - IAD

1 stop22h 01mFrontier

Deal found 2/20

$234

Sat 4/267:35 amIAD - STL

1 stop5h 10mDelta

Tue 4/296:50 amSTL - IAD

1 stop3h 41mDelta

Deal found 2/20

$237

Mon 4/74:05 pmDCA - STL

1 stop4h 55mSouthwest

Wed 4/910:15 amSTL - DCA

2 stops6h 45mSouthwest

Deal found 2/18

$238

Wed 7/28:15 amIAD - STL

1 stop5h 05mUnited Airlines

Sat 7/58:25 amSTL - IAD

Nonstop2h 06mUnited Airlines

Deal found 2/20

$240

Sun 3/168:58 pmDCA - STL

Nonstop2h 24mAmerican Airlines

Sat 3/224:26 pmSTL - DCA

1 stop5h 49mAmerican Airlines

Deal found 2/20

$243

Wed 4/96:00 amDCA - STL

1 stop6h 56mDelta

Mon 4/144:05 pmSTL - DCA

1 stop4h 31mDelta

Deal found 2/20

$237

Sun 6/110:30 amDCA - STL

1 stop6h 00mUnited Airlines

Wed 6/45:27 pmSTL - DCA

1 stop4h 15mUnited Airlines

Deal found 2/20

$250

Wed 5/149:21 amIAD - STL

1 stop4h 31mAmerican Airlines

Sat 5/176:47 pmSTL - IAD

1 stop4h 16mAmerican Airlines

Deal found 2/20

$257

Mon 5/52:10 pmIAD - STL

1 stop10h 55mSouthwest

Thu 5/85:20 amSTL - IAD

1 stop7h 05mSouthwest

Deal found 2/20

$292

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 February 20, 2025 and is based on user searches.

Tue 2/257:00 amDCA - STL

1 stop27h 16mFrontier

Wed 2/267:04 pmSTL - DCA

1 stop20h 55mFrontier

Deal found 2/19

$258

Tue 2/2510:11 pmDCA - STL

2 stops19h 10mAlaska Airlines

Mon 3/37:00 amSTL - DCA

1 stop13h 59mAlaska Airlines

Deal found 2/19

$7,827

Wed 2/266:03 pmIAD - STL

1 stop6h 40mFrontier

Wed 3/55:20 pmSTL - IAD

1 stop22h 34mFrontier

Deal found 2/20

$280

Wed 2/264:12 pmDCA - STL

Nonstop2h 33mAmerican Airlines

Sat 3/86:00 amSTL - DCA

Nonstop2h 15mAmerican Airlines

Deal found 2/19

$373

Thu 2/276:00 amDCA - STL

1 stop4h 36mDelta

Sun 3/96:50 amSTL - DCA

1 stop3h 44mDelta

Deal found 2/19

$469

Thu 2/271:00 pmDCA - STL

1 stop5h 06mUnited Airlines

Sun 3/25:36 pmSTL - DCA

1 stop5h 21mUnited Airlines

Deal found 2/19

$618

Fri 2/281:48 pmIAD - STL

1 stop6h 45mAmerican Airlines

Fri 3/75:55 amSTL - IAD

2 stops10h 03mAmerican Airlines

Deal found 2/19

$491

Sun 3/28:35 amIAD - STL

Nonstop2h 30mUnited Airlines

Sat 3/85:33 pmSTL - IAD

1 stop5h 26mUnited Airlines

Deal found 2/20

$384

Sun 3/27:25 amIAD - STL

1 stop5h 21mDelta

Sat 3/812:52 pmSTL - IAD

1 stop5h 51mDelta

Deal found 2/20

$393

Sun 3/25:50 pmIAD - STL

1 stop8h 40mSouthwest

Sat 3/81:45 pmSTL - IAD

2 stops9h 25mSouthwest

Deal found 2/20

$408

Sun 3/26:00 amDCA - STL

1 stop6h 10mSouthwest

Wed 3/511:05 amSTL - DCA

2 stops8h 10mSouthwest

Deal found 2/19

$474

Mon 3/38:20 amIAD - STL

2 stops8h 20mMultiple Airlines

Mon 3/103:21 pmSTL - IAD

1 stop13h 11mMultiple Airlines

Deal found 2/20

$1,125

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 February 20, 2025.

Fri 5/167:00 amDCA - STL

1 stop27h 09mFrontier

Deal found 2/20

$96

Tue 3/255:22 pmIAD - STL

1 stop5h 18mDelta

Deal found 2/20

$99

Mon 3/176:00 amDCA - STL

1 stop4h 14mDelta

Deal found 2/20

$99

Tue 5/275:23 pmIAD - STL

1 stop7h 14mFrontier

Deal found 2/20

$102

Wed 5/77:50 amIAD - STL

2 stops10h 55mSouthwest

Deal found 2/20

$104

Tue 4/88:35 amIAD - STL

Nonstop2h 23mUnited Airlines

Deal found 2/20

$109

Tue 4/14:32 pmDCA - STL

Nonstop2h 22mAmerican Airlines

Deal found 2/19

$109

Mon 4/74:05 pmDCA - STL

1 stop4h 55mSouthwest

Deal found 2/20

$114

Sat 5/245:00 pmDCA - STL

1 stop6h 45mUnited Airlines

Deal found 2/20

$125

Thu 5/85:00 amIAD - STL

1 stop4h 56mAmerican Airlines

Deal found 2/20

$129

Mon 4/75:40 pmIAD - STL

3 stops25h 12mMultiple Airlines

Deal found 2/20

$131

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

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Sat 4/26

7:35 am-11:45 am

1 stop5h 10m

Lambert-St Louis

Tue 4/29

6:50 am-11:31 am

1 stop3h 41m

$237

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Wed 4/9

6:00 am-11:56 am

1 stop6h 56m

Lambert-St Louis

Mon 4/14

4:05 pm-9:36 pm

1 stop4h 31m

$237

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Mon 4/7

4:05 pm-8:00 pm

1 stop4h 55m

Lambert-St Louis

Wed 4/9

10:15 am-6:00 pm

2 stops6h 45m

$238

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Sun 3/16

8:58 pm-10:22 pm

Nonstop2h 24m

Lambert-St Louis

Sat 3/22

4:26 pm-11:15 pm

1 stop5h 49m

$243

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Sun 6/1

10:30 am-3:30 pm

1 stop6h 00m

Lambert-St Louis

Wed 6/4

5:27 pm-10:42 pm

1 stop4h 15m

$250

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Wed 5/14

9:21 am-12:52 pm

1 stop4h 31m

Lambert-St Louis

Sat 5/17

6:47 pm-12:03 am

1 stop4h 16m

$257

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Tue 3/11

5:50 pm-7:25 pm

Nonstop2h 35m

Lambert-St Louis

Thu 3/13

6:30 am-11:46 am

1 stop4h 16m

$270

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Wed 2/26

6:03 pm-11:43 pm

1 stop6h 40m

Lambert-St Louis

Wed 3/5

5:20 pm-4:54 pm

1 stop22h 34m

$280

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Mon 5/5

2:10 pm-12:05 am

1 stop10h 55m

Lambert-St Louis

Thu 5/8

5:20 am-1:25 pm

1 stop7h 05m

$292

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Fri 5/16

7:00 am-9:09 am

1 stop27h 09m

$96

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 20 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.

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?

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

The most flights from USDC to STL are scheduled on a Monday (8 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (8 on average).

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

8.1

Very good

4,411 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest

8.1

Very good

4,411 reviews

Southwest

8.1

Very good

4,411 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Feb 2025

MCO - STL

Delta

8.0

Very good

8,219 reviews

Southwest

8.1

Very good

4,411 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Feb 2025

MCO - STL

United Airlines

7.4

Good

8,765 reviews

Southwest

8.1

Very good

4,411 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Feb 2025

MCO - STL

American Airlines

7.2

Good

10,000 reviews

Southwest

8.1

Very good

4,411 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Feb 2025

MCO - STL

Frontier

6.0

Okay

3,355 reviews

Southwest

8.1

Very good

4,411 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Feb 2025

MCO - STL

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.
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 $96 on Frontier. Other airlines that offer cheap prices include Delta from $99 and Southwest from $104 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 GoJet (77%), Avianca (77%) or Copa Airlines (77%) 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 $216. While the most popular route (Washington, D.C. Dulles Intl - Lambert-St Louis) can be booked for $141 on average our data indicates $389 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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Top 6 airlines flying from District of Columbia to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$98	Average$171	FlexibilityNo cancel fee	On-time62%
Spirit Airlines	Cheapest$133	Average$189	FlexibilityNo cancel fee	On-time65%
United Airlines	Cheapest$158	Average$399	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$175	Average$318	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$183	Average$356	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$219	Average$364	FlexibilityNo cancel fee	On-time63%

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$96+ 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 5/16. 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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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 February 20, 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 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 February 20, 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 February 20, 2025.

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

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.

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?

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 February 20, 2025.

Weekly flight availability from District of Columbia to St. Louis

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?

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

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

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?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for District of Columbia to St. Louis

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Top 6 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 February 20, 2025.