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

Flights starting at £67. Choose between United Airlines, Frontier Airlines, or Spirit Airlines to find the best price.

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Book your trip to arrive at Baltimore–Washington International, Washington Dulles International, Ronald Reagan Washington National, Washington, DC - Rosslyn, or Washington, DC - Union Station. The distance between St. Louis and Washington, D.C. is 1118 km. The most popular airlines for this route are United Airlines, Frontier Airlines, Spirit Airlines, JetBlue Airways, and Southern Airways Express. St. Louis and Washington, D.C. have 214 direct flights per week. When you arrive at Washington, D.C., consider visiting Lincoln Memorial, Independence National Historical Park, PA, USA, and National Mall.

Weekly direct flights

Discover the top airlines offering direct flights from St. Louis to Washington, D.C. in the next month. You’ll find the number of daily direct flights per airline in the table.

Weekly direct flights for Mon 11.03 - Sun 17.03

AirlineMon 11.03Tue 12.03Wed 13.03Thu 14.03Fri 15.03Sat 16.03Sun 17.03
2221122

Weekly direct flights for Mon 18.03 - Sun 24.03

AirlineMon 18.03Tue 19.03Wed 20.03Thu 21.03Fri 22.03Sat 23.03Sun 24.03
2222222

Weekly direct flights for Mon 25.03 - Sun 31.03

AirlineMon 25.03Tue 26.03Wed 27.03Thu 28.03Fri 29.03Sat 30.03Sun 31.03
2222222

Weekly direct flights for Mon 01.04 - Sun 07.04

AirlineMon 01.04Tue 02.04Wed 03.04Thu 04.04Fri 05.04Sat 06.04Sun 07.04
2222222

Check-in for a flight from St. Louis to Washington, D.C.

NameCarrier codeIATA CodePassport needed during bookingOnline check-in available
United AirlinesUALUAYesNo
Frontier AirlinesFFTF9NoOpens 24 days before flight
Closes 1 hours before flight
Spirit AirlinesNKSNKNoOpens 24 days before flight
Closes 1 hours before flight
JetBlue AirwaysJBUB6NoOpens 24 days before flight
Closes 2 hours before flight
Southern Airways ExpressFDY9XYesNo

Weather in Washington, D.C.

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January5°C-1°C
February8°C0°C
March12°C3°C
April19°C8°C
May23°C13°C
June28°C18°C
July31°C21°C
August30°C20°C
September26°C17°C
October20°C11°C
November13°C4°C
December8°C1°C
Hottest Month
31°C
July
Coldest month
-1°C
January
Sunny days
265
days per year
Snow days
8
days per year

14 day forecast

Tuesday
12 Mar
20°C5°C
19 Mar
8°C1°C
Wednesday
13 Mar
20°C9°C
20 Mar
13°C1°C
Thursday
14 Mar
22°C10°C
21 Mar
15°C9°C
Friday
15 Mar
23°C14°C
22 Mar
18°C9°C
Saturday
16 Mar
76%
16°C9°C
23 Mar
89%
12°C11°C
Sunday
17 Mar
17°C9°C
24 Mar
82%
20°C10°C
Monday
18 Mar
76%
11°C4°C
25 Mar
78%
15°C8°C

Frequently asked questions

How long does it take to travel from St. Louis to Washington, D.C.?
What is the flight distance between St. Louis and Washington, D.C.?
What airlines offer nonstop (direct) flights between St. Louis and Washington, D.C.?
What are the most popular routes to and from St. Louis?
What are the most popular routes to and from Washington, D.C.?
What airports are near St. Louis?
What airports are near Washington, D.C.?
Is it possible to combine flights, buses, and trains in one itinerary when traveling between St. Louis and Washington, D.C.?
What is Virtual Interlining and how do I use it?
Which airlines fly between St. Louis and Washington, D.C.?
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What time do flights between St. Louis and Washington, D.C. arrive?

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