Cheap flights from St. Louis (STL) to Washington, D.C. (WAS) from $59

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 4/15. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
STL — WAS
Mar 24 — Mar 311

The best prices from Lambert-St Louis to Washington, D.C. are usually found in December or February, booked 48 days in advance, depart on a Saturday or Wednesday and return on a Saturday

Cheap flight deals from St. Louis to Washington, D.C.

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Washington, D.C. (WAS). 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 March 19, 2024.

Popular in

June

Cheapest in

December

Round-trip from

$234

One-way from

$104
High demand for flights, 14% potential price rise
Best time to find cheap flights, 14% potential price drop
From Lambert-St Louis to Washington, D.C. (WAS)
One-way flight from Lambert-St Louis to Washington, D.C. (WAS)

What is the cheapest day to fly round-trip from St. Louis to Washington, D.C.?

Flights from St. Louis to Washington, D.C. are found to be more expensive on Saturday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Washington, D.C..

How far in advance should I book a flight from St. Louis to Washington, D.C.?

Travelers have found it’s best to book a flight 49 days in advance to save up to 220% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 49 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from St. Louis to Washington, D.C. 1-2 weeks in advance for as low as $198, or $452 for flights within the next 24 hours.

What is the cheapest month to fly from St. Louis to Washington, D.C.?

Due to multiple factors, expect to potentially pay more when booking in June. For low rates, December can be a great choice for travel to Washington, D.C.. Flights to Washington, D.C. from St. Louis in December are about $312 on average during December, but can be found for as low as $110.

When is the cheapest time to fly from St. Louis to Washington, D.C. (STL - WAS)?

It’s typically best to fly out from St. Louis to Washington, D.C. in the evening. Doing so could potentially save you 40% on the flight price compared to flying in the afternoon, which is usually more expensive.

Cheap United Airlines flights from St. Louis to Washington, D.C.

Explore cheap flight options specifically provided by United Airlines for the route between St. Louis and Washington, D.C.. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,145,932 searches. Data last updated March 19, 2024.
Take a look at some of the lowest-priced United Airlines flights heading from St. Louis to Washington, D.C.. Come back soon if you're not finding the exact deal you're looking for.
Sat 4/1310:10 amSTL - IAD
1 stop5h 10mUnited Airlines
Thu 4/188:32 amIAD - STL
Nonstop2h 27mUnited Airlines
Deal found 3/18$178
Tue 4/168:27 amSTL - IAD
Nonstop2h 10mUnited Airlines
Tue 4/235:29 pmIAD - STL
1 stop5h 46mUnited Airlines
Deal found 3/17$195
Tue 4/168:27 amSTL - IAD
Nonstop2h 10mUnited Airlines
Tue 4/238:32 amIAD - STL
Nonstop2h 27mUnited Airlines
Deal found 3/17$212
Tue 4/238:27 amSTL - IAD
Nonstop2h 10mUnited Airlines
Tue 4/308:32 amIAD - STL
Nonstop2h 27mUnited Airlines
Deal found 3/17$219
Sun 4/145:34 pmSTL - IAD
1 stop4h 42mUnited Airlines
Fri 4/195:29 pmIAD - STL
1 stop5h 46mUnited Airlines
Deal found 3/18$223
Wed 3/271:00 pmSTL - IAD
Nonstop2h 08mUnited Airlines
Tue 4/25:50 pmIAD - STL
Nonstop2h 29mUnited Airlines
Deal found 3/18$460
Wed 3/273:15 pmSTL - IAD
1 stop4h 45mUnited Airlines
Tue 4/25:50 pmIAD - STL
Nonstop2h 29mUnited Airlines
Deal found 3/18$470
Thu 3/288:30 amSTL - IAD
Nonstop2h 09mUnited Airlines
Mon 4/15:29 pmIAD - STL
1 stop5h 46mUnited Airlines
Deal found 3/18$474
Wed 3/278:30 amSTL - IAD
Nonstop2h 09mUnited Airlines
Sun 3/315:50 pmIAD - STL
Nonstop2h 29mUnited Airlines
Deal found 3/18$479
  • If you’re traveling from St. Louis to Washington, D.C., one of the more common airlines traveling that route is United Airlines. Flights from United Airlines traveling this route typically cost $399.87 RT. This price is typically 45% more expensive than other airlines that offer St. Louis to Washington, D.C. flights. When booking this route, the cheapest RT price found was $200. The most popular departure airport in St. Louis when flying to Washington, D.C. is Lambert-St Louis Airport. The most popular airport to fly into when visiting Washington, D.C. is Washington, D.C. Dulles Intl Airport. When flying from St. Louis to Washington, D.C., United Airlines flights are 6% more popular than any other airline flying that same route.

Cheap Delta flights from St. Louis to Washington, D.C.

Explore cheap flight options specifically provided by Delta for the route between St. Louis and Washington, D.C.. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,145,932 searches. Data last updated March 19, 2024.
Take a gander at the lowest prices we've found on Delta flights from St. Louis to Washington, D.C.. Check back soon if you're not seeing flights that suit your needs.
Sat 4/271:01 pmSTL - IAD
1 stop5h 42mDelta
Wed 5/17:04 amIAD - STL
1 stop5h 52mDelta
Deal found 3/18$176
Sat 6/15:29 pmSTL - DCA
1 stop4h 18mDelta
Tue 6/410:00 amDCA - STL
1 stop5h 17mDelta
Deal found 3/18$178
Sat 4/1311:45 amSTL - IAD
1 stop4h 41mDelta
Thu 4/186:00 amIAD - STL
1 stop5h 59mDelta
Deal found 3/18$188
Sat 4/1311:45 amSTL - IAD
1 stop4h 41mDelta
Mon 4/157:55 pmIAD - STL
1 stop4h 51mDelta
Deal found 3/18$193
Fri 5/33:52 pmSTL - IAD
1 stop7h 07mDelta
Sun 5/56:00 amIAD - STL
1 stop6h 56mDelta
Deal found 3/19$198
Fri 4/127:03 pmSTL - IAD
1 stop3h 56mDelta
Mon 4/157:55 pmIAD - STL
1 stop4h 51mDelta
Deal found 3/19$208
Thu 3/286:27 amSTL - IAD
1 stop3h 59mDelta
Mon 4/16:21 pmIAD - STL
1 stop5h 21mDelta
Deal found 3/19$498
Thu 3/286:27 amSTL - IAD
1 stop3h 59mDelta
Fri 4/56:21 pmIAD - STL
1 stop4h 37mDelta
Deal found 3/18$543
Sun 3/246:27 amSTL - IAD
1 stop3h 59mDelta
Fri 4/56:21 pmIAD - STL
1 stop4h 37mDelta
Deal found 3/18$568
  • One of the most popular airlines traveling from St. Louis to Washington, D.C. is Delta. Flights from Delta traveling this route typically cost $337.86 RT. This price is typically 52% cheaper than other airlines that offer St. Louis to Washington, D.C. flights. When booking this route, the cheapest RT price found was $193. Lambert-St Louis Airport is the most common St. Louis airport to take off from when flying to Washington, D.C.. Washington, D.C. Dulles Intl Airport is the most popular arrival airport in Washington, D.C.. When flying from St. Louis to Washington, D.C., Delta flights are 4% more popular than any other airline flying that same route.

Cheap St. Louis to Washington, D.C. flights in March & April 2024

Find cheap flight options from St. Louis to Washington, D.C. specifically for the months of March and April 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,145,932 searches. Prices were last updated on March 19, 2024.
Listed are some of the best fares we've found on flights departing from St. Louis to Washington, D.C. in 2024. For more flight deals, be sure to check back very soon.
Tue 4/234:50 pmSTL - BWI
1 stop17h 39mFrontier
Tue 4/309:17 pmBWI - STL
1 stop24h 36mFrontier
Deal found 3/17$94
Tue 4/167:16 pmSTL - BWI
1 stop18h 40mFrontier
Tue 4/239:17 pmBWI - STL
1 stop24h 36mFrontier
Deal found 3/18$97
Tue 4/234:50 pmSTL - BWI
2 stops21h 26mFrontier
Tue 4/309:17 pmBWI - STL
1 stop24h 36mFrontier
Deal found 3/17$99
Tue 4/164:50 pmSTL - BWI
2 stops21h 26mFrontier
Tue 4/239:17 pmBWI - STL
1 stop24h 36mFrontier
Deal found 3/18$101
Sun 4/217:16 pmSTL - BWI
1 stop11h 02mFrontier
Tue 4/309:17 pmBWI - STL
1 stop24h 36mFrontier
Deal found 3/18$105
Wed 4/178:04 pmSTL - DCA
1 stop24h 55mFrontier
Wed 4/246:51 pmDCA - STL
1 stop16h 47mFrontier
Deal found 3/18$107
Sun 4/217:16 pmSTL - BWI
1 stop11h 02mFrontier
Thu 4/259:17 pmBWI - STL
1 stop10h 56mFrontier
Deal found 3/18$108
Thu 4/2511:38 amSTL - DCA
1 stop9h 21mFrontier
Fri 4/266:51 pmDCA - STL
1 stop15h 56mFrontier
Deal found 3/18$110
Sun 4/147:16 pmSTL - BWI
1 stop11h 02mFrontier
Thu 4/189:17 pmBWI - STL
1 stop10h 56mFrontier
Deal found 3/18$117

St. Louis to Washington, D.C. 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Washington, D.C. in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,145,932 searches. Data last updated March 19, 2024.
Listed are some of the best fares we've found on flights departing from St. Louis to Washington, D.C. in 2024. For more flight deals, be sure to check back very soon.
Tue 4/234:50 pmSTL - BWI
1 stop17h 39mFrontier
Tue 4/309:17 pmBWI - STL
1 stop24h 36mFrontier
Deal found 3/17$94
Tue 4/167:16 pmSTL - BWI
1 stop18h 40mFrontier
Tue 4/239:17 pmBWI - STL
1 stop24h 36mFrontier
Deal found 3/18$97
Tue 4/234:50 pmSTL - BWI
2 stops21h 26mFrontier
Tue 4/309:17 pmBWI - STL
1 stop24h 36mFrontier
Deal found 3/17$99
Tue 4/164:50 pmSTL - BWI
2 stops21h 26mFrontier
Tue 4/239:17 pmBWI - STL
1 stop24h 36mFrontier
Deal found 3/18$101
Sun 4/217:16 pmSTL - BWI
1 stop11h 02mFrontier
Tue 4/309:17 pmBWI - STL
1 stop24h 36mFrontier
Deal found 3/18$105
Wed 4/178:04 pmSTL - DCA
1 stop24h 55mFrontier
Wed 4/246:51 pmDCA - STL
1 stop16h 47mFrontier
Deal found 3/18$107
Sun 4/217:16 pmSTL - BWI
1 stop11h 02mFrontier
Thu 4/259:17 pmBWI - STL
1 stop10h 56mFrontier
Deal found 3/18$108
Thu 4/2511:38 amSTL - DCA
1 stop9h 21mFrontier
Fri 4/266:51 pmDCA - STL
1 stop15h 56mFrontier
Deal found 3/18$110
Sun 4/147:16 pmSTL - BWI
1 stop11h 02mFrontier
Thu 4/189:17 pmBWI - STL
1 stop10h 56mFrontier
Deal found 3/18$117

Non-stop flights to Washington, D.C. from St. Louis

Discover non-stop flight options from St. Louis to Washington, D.C.. Find direct flights with no layovers, providing a convenient travel experience. Explore non-stop flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 3,145,932 searches. Data last updated March 19, 2024.
To help reduce your travel time, choose from one of these non-stop flights from St. Louis to Washington, D.C.. Those looking to potentially save on 1 or 2-stop flights from St. Louis to Washington, D.C. should utilize the search form at the the top of the page.
Wed 4/176:20 amSTL - DCA
Nonstop2h 01mAmerican Airlines
Wed 4/247:51 pmDCA - STL
Nonstop2h 25mAmerican Airlines
Deal found 3/18$139
Wed 4/246:20 amSTL - DCA
Nonstop2h 01mAmerican Airlines
Fri 4/267:50 pmDCA - STL
Nonstop2h 25mAmerican Airlines
Deal found 3/18$174
Thu 4/186:20 amSTL - DCA
Nonstop2h 01mAmerican Airlines
Mon 4/227:51 pmDCA - STL
Nonstop2h 25mAmerican Airlines
Deal found 3/18$179
Sat 6/16:16 amSTL - DCA
Nonstop1h 59mAmerican Airlines
Tue 6/42:19 pmDCA - STL
Nonstop2h 24mAmerican Airlines
Deal found 3/18$184
Fri 4/126:20 amSTL - DCA
Nonstop2h 01mAmerican Airlines
Mon 4/157:51 pmDCA - STL
Nonstop2h 25mAmerican Airlines
Deal found 3/18$189
Fri 5/106:16 amSTL - DCA
Nonstop1h 59mAmerican Airlines
Sat 5/118:30 amDCA - STL
Nonstop2h 37mAmerican Airlines
Deal found 3/18$194
Sat 5/256:16 amSTL - DCA
Nonstop1h 59mAmerican Airlines
Mon 5/277:45 pmDCA - STL
Nonstop2h 15mAmerican Airlines
Deal found 3/18$199
Sat 4/136:20 amSTL - DCA
Nonstop2h 01mAmerican Airlines
Sat 4/202:00 pmDCA - STL
Nonstop2h 25mAmerican Airlines
Deal found 3/18$204
Mon 5/64:50 pmSTL - DCA
Nonstop2h 10mAmerican Airlines
Sat 5/118:30 amDCA - STL
Nonstop2h 37mAmerican Airlines
Deal found 3/18$209

St. Louis to Washington, D.C. flights leaving soon

Find last-minute flight options from St. Louis to Washington, D.C. for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 3,145,932 searches. Data last updated March 19, 2024.
Check out these flights departing soon from St. Louis to Washington, D.C.. Users should double check the flight they book to ensure it matches the day, time, and destination they're looking for.
Wed 3/278:45 pmSTL - DCA
1 stop24h 14mFrontier
Tue 4/27:00 amDCA - STL
1 stop28h 12mFrontier
Deal found 3/18$206
Mon 3/258:45 pmSTL - DCA
1 stop15h 11mFrontier
Fri 5/106:51 pmDCA - STL
1 stop15h 56mFrontier
Deal found 3/18$207
Mon 3/258:45 pmSTL - DCA
1 stop24h 14mFrontier
Mon 4/16:50 pmDCA - STL
1 stop27h 24mFrontier
Deal found 3/17$227
Thu 3/2811:15 pmSTL - DCA
1 stop12h 41mFrontier
Wed 4/246:51 pmDCA - STL
1 stop16h 47mFrontier
Deal found 3/18$254
Wed 3/278:45 pmSTL - DCA
1 stop24h 14mFrontier
Tue 4/212:59 pmDCA - STL
1 stop9h 15mFrontier
Deal found 3/18$257
Mon 3/255:35 pmSTL - BWI
1 stop5h 44mMultiple Airlines
Fri 5/1012:29 pmBWI - STL
1 stop22h 18mMultiple Airlines
Deal found 3/18$262
Mon 3/252:00 pmSTL - BWI
2 stops8h 55mMultiple Airlines
Fri 5/1012:29 pmBWI - STL
1 stop22h 18mMultiple Airlines
Deal found 3/18$288
Mon 3/258:45 pmSTL - DCA
1 stop15h 11mFrontier
Mon 4/16:50 pmDCA - STL
2 stops16h 33mFrontier
Deal found 3/17$294
Mon 3/255:35 pmSTL - BWI
1 stop14h 46mSpirit Airlines
Fri 5/109:29 pmBWI - STL
2 stops21h 00mSpirit Airlines
Deal found 3/18$303

One-way flights to Washington, D.C. from St. Louis

Search for one-way flight options from St. Louis to Washington, D.C.. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,145,932 searches. Data last updated March 19, 2024.
Users in need of a one-way flight from St. Louis to Washington, D.C. can choose from these deals. Users in need of a round-trip flight from St. Louis to Washington, D.C. instead should update the search form at the top of page.
Mon 4/158:04 pmSTL - DCA
1 stop24h 55mFrontier
Deal found 3/18$59
Tue 4/304:50 pmSTL - DCA
1 stop18h 10mFrontier
Deal found 3/18$60
Tue 4/304:50 pmSTL - BWI
1 stop17h 39mFrontier
Deal found 3/18$60
Sat 5/116:16 amSTL - DCA
Nonstop1h 59mAmerican Airlines
Deal found 3/18$70
Tue 3/268:24 pmSTL - BWI
1 stop10h 05mFrontier
Deal found 3/18$76
Sat 5/1111:39 amSTL - BWI
1 stop12h 12mSpirit Airlines
Deal found 3/18$79
Tue 3/268:24 pmSTL - BWI
1 stop10h 05mFrontier
Deal found 3/18$80
Thu 4/116:24 pmSTL - BWI
1 stop5h 55mSpirit Airlines
Deal found 3/17$85
Sat 5/115:09 pmSTL - DCA
1 stop5h 48mDelta
Deal found 3/18$88

Find flights from St. Louis to Washington, D.C. within your budget

Customize your flight search to find flights from St. Louis to Washington, D.C. 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 3,145,932 searches. Data last updated March 19, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$94 - $215

Route

Depart

Return

Price

Lambert-St LouisBaltimore/Washington

STL - BWI

STLBWI

Lambert-St Louis

Tue 4/23

1 stop17h 39m

Baltimore/Washington

Tue 4/30

1 stop24h 36m

$94

Lambert-St LouisBaltimore/Washington

STL - BWI

STLBWI

Lambert-St Louis

Tue 4/16

1 stop18h 40m

Baltimore/Washington

Tue 4/23

1 stop24h 36m

$97

Lambert-St LouisBaltimore/Washington

STL - BWI

STLBWI

Lambert-St Louis

Tue 4/23

2 stops21h 26m

Baltimore/Washington

Tue 4/30

1 stop24h 36m

$99

Lambert-St LouisBaltimore/Washington

STL - BWI

STLBWI

Lambert-St Louis

Tue 4/16

2 stops21h 26m

Baltimore/Washington

Tue 4/23

1 stop24h 36m

$101

Lambert-St LouisWashington, D.C. Reagan-National

STL - DCA

STLDCA

Lambert-St Louis

Wed 4/17

Nonstop2h 01m

Washington, D.C. Reagan-National

Wed 4/24

Nonstop2h 25m

$139

Lambert-St LouisBaltimore/Washington

STL - BWI

STLBWI

Lambert-St Louis

Sat 4/6

1 stop11h 26m

Baltimore/Washington

Mon 4/8

1 stop17h 37m

$158

Lambert-St LouisWashington, D.C. Dulles Intl

STL - IAD

STLIAD

Lambert-St Louis

Sat 4/27

1 stop5h 42m

Washington, D.C. Dulles Intl

Wed 5/1

1 stop5h 52m

$176

Lambert-St LouisWashington, D.C. Dulles Intl

STL - IAD

STLIAD

Lambert-St Louis

Sat 4/13

1 stop5h 10m

Washington, D.C. Dulles Intl

Thu 4/18

Nonstop2h 27m

$178

Lambert-St LouisBaltimore/Washington

STL - BWI

STLBWI

Lambert-St Louis

Sat 4/6

1 stop11h 26m

Baltimore/Washington

Mon 4/8

2 stops11h 19m

$215

Flights are sorted by cheapest first

Deals found on 3/17

When is the best time to book a flight from St. Louis to Washington, D.C.?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Washington, D.C.. Price data was last updated on January 28, 2024.
Booking 48 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis to Washington, D.C.. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Search Deals

When is the cheapest time to fly from St. Louis to Washington, D.C.?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Washington, D.C.. Price data was last updated on March 17, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their St. Louis to Washington, D.C. flight should consider departing on Thursday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to Washington, D.C. by month

Plan your trip from St. Louis to Washington, D.C. by taking into account the cheapest months to travel. The average price of a one-way flight from St. Louis to Washington, D.C. is currently $73 while a round-trip flight costs $140. Price data was last updated on March 17, 2024.

Currently, September is the cheapest month in which you can book a flight from St. Louis to Washington, D.C. (average of $282). Flying from St. Louis to Washington, D.C. in June is currently the most expensive (average of $407). 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.

January

$308

February

$303

March

$354

April

$345

May

$345

June

$407

July

$379

August

$298

September

$282

October

$306

November

$326

December

$289

Temperature and rainfall in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average temperature and rainfall totals by month.

WAS

Temperature

35.6 - 80.6 °F

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. 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 Washington, D.C.. Reviews last updated March 19, 2024.
Peruse reviews from past customers who have flown with United Airlines, Delta and American Airlines from St. Louis to Washington, D.C. to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.2
Very good
6,382 reviews

Crew

8.8

Entertainment

7.9

Comfort

8.1

Food

7.4

Overall

8.2

Boarding

8.3

Reviews

1 / 10

No tray tables for food or drink not convenient nor comfortable

Southwest
8.2
Very good
6,382 reviews
Southwest
8.2
Very good
6,382 reviews

Crew

8.8

Entertainment

7.9

Comfort

8.1

Food

7.4

Overall

8.2

Boarding

8.3

Reviews

1 / 10

No tray tables for food or drink not convenient nor comfortable

8.1
Very good
9,147 reviews
Southwest
8.2
Very good
6,382 reviews

Crew

8.8

Entertainment

7.9

Comfort

8.1

Food

7.4

Overall

8.2

Boarding

8.3

Reviews

1 / 10

No tray tables for food or drink not convenient nor comfortable

8.1
Very good
11,551 reviews
Southwest
8.2
Very good
6,382 reviews

Crew

8.8

Entertainment

7.9

Comfort

8.1

Food

7.4

Overall

8.2

Boarding

8.3

Reviews

1 / 10

No tray tables for food or drink not convenient nor comfortable

7.4
Good
11,602 reviews
Southwest
8.2
Very good
6,382 reviews

Crew

8.8

Entertainment

7.9

Comfort

8.1

Food

7.4

Overall

8.2

Boarding

8.3

Reviews

1 / 10

No tray tables for food or drink not convenient nor comfortable

7.3
Good
15,312 reviews
Southwest
8.2
Very good
6,382 reviews

Crew

8.8

Entertainment

7.9

Comfort

8.1

Food

7.4

Overall

8.2

Boarding

8.3

Reviews

1 / 10

No tray tables for food or drink not convenient nor comfortable

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Washington, D.C.. 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 Washington, D.C.?

    If you book a flight to Washington, D.C. 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. There are 11 flights from Lambert-St Louis to Washington, D.C. per day from 5 different airlines.

  • Can I find flights from St. Louis to Washington, D.C. for under $100 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Washington, D.C. for under $100. The cheapest flight booked recently is on Frontier for just $94, but on average you can expect to pay $124.

  • Are there nonstop flights from St. Louis to Washington, D.C. for under $200 on Cheapflights?

    Cheapflights has at least 20 direct flights from St. Louis to Washington, D.C. under $200. A good price for a nonstop flight from St. Louis to Washington, D.C. is less than $210.

  • Are there last-minute flights available from St. Louis to Washington, D.C. for under $300?

    There are currently 20+ open flights from St. Louis to Washington, D.C. within the next 7 days for less than $300.

  • What are the cheapest airlines flying from St. Louis to Washington, D.C. round-trip?

    Flying on Frontier is currently your cheapest option to Washington, D.C., with prices starting at $94. Another option worth looking into is American Airlines, starting at $139 round trip. Frontier is 69% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from St. Louis to Washington, D.C. one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $59. Users have also found prices from $70 and $79 on American Airlines and Spirit Airlines, respectively.

  • What are the most popular routes from St. Louis to Washington, D.C.?

  • What are the most popular airlines that fly from St. Louis to Washington, D.C.?

  • What are the most reliable airlines from St. Louis to Washington, D.C.?

    The top 3 most reliable airlines when flying from St. Louis to Washington, D.C. are CommutAir (100%), Copa Airlines (96%) and United Airlines (96%).

  • What are the cheapest flights from St. Louis to Washington, D.C.?

    While on average a flight from St. Louis to Washington, D.C. is generally $1,162, our data shows the cheapest flight currently is $184. When looking at the most popular route, (Lambert-St Louis - Washington, D.C. Reagan-National), you can expect to pay $107 for that flight.

  • What does STL to IAD mean?

    STL and IAD are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. STL to IAD refers to a flight route from Lambert-St Louis Airport to Washington, D.C. Dulles Intl Airport. Baltimore/Washington Airport (BWI), Washington, D.C. Reagan-National Airport (DCA) are some additional IATA codes for airports related to your trip.

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Top 5 airlines flying from St. Louis to Washington, D.C.

Discover the top 5 airlines that operate flights from St. Louis to Washington, D.C.. 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 3,145,932 searches. Data last updated March 19, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$105Average$199FlexibilityNo cancel feeOn-time62%
Search Frontier flights
Spirit AirlinesCheapest$140Average$218FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
DeltaCheapest$177Average$324FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapest$193Average$338FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest$200Average$400FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Search flights from St. Louis to Washington, D.C. by cabin class

Find flights from St. Louis to Washington, D.C., based on your preferred cabin class, be it economy, premium economy, business, or first class.

Hourly flight availability from St. Louis to Washington, D.C.

Find hourly flight availability from St. Louis to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 19, 2024.
11%of flight departuresEarly morningMidnight to 6 am
35%of flight departuresMorning6 am to noon
43%of flight departuresAfternoonNoon to 6 pm
11%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from St. Louis to Washington, D.C.

Explore weekly flight availability from St. Louis to Washington, D.C.. 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 March 19, 2024.
Sunday10daily flights
Monday13daily flights
Tuesday12daily flights
Wednesday13daily flights
Thursday12daily flights
Friday13daily flights
Saturday10daily flights

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