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Cheap flights from St Louis to Washington (STL - WAS)

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The best prices from St Louis to Washington are usually found in April or November, booked 57 days in advance, depart on a Saturday or Tuesday and return on a Saturday

STL - WAS
Price
$254 - $311
WAS
Temperature
48.2 - 89.6 °F
WAS
Rainfall
2.4 - 4.2 inches
Popular in October High demand for flights, 5% potential price rise
Cheapest in April Best time to find cheap flights, 14% potential price drop
Average price $254 Average for round-trip flights in April 2020
Round-trip from $254 From St Louis to Washington

Cheap flights from St Louis to Washington in April 2020

The best prices found for STL to IAD flights for April
14 Apr - 16 Apr
$129pp
STL
Lambert-St Louis
Multiple Airlines
   
2 STOPS
BWI
Baltimore/Washington
BWI
Baltimore/Washington
Multiple Airlines
     
3 STOPS
STL
Lambert-St Louis
14 Apr - 16 Apr
$160pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
Multiple Airlines
Non-Stop
STL
Lambert-St Louis
22 Apr - 25 Apr
$161pp
STL
Lambert-St Louis
Multiple Airlines
Non-Stop
DCA
Washington Reagan-National
DCA
Washington Reagan-National
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis

St Louis to Washington 2020 flight deals

Cheap flights to Washington from St Louis found for this year
6 Jun - 9 Jun
$121pp
STL
Lambert-St Louis
Multiple Airlines
Non-Stop
DCA
Washington Reagan-National
DCA
Washington Reagan-National
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
24 Jul - 31 Jul
$128pp
STL
Lambert-St Louis
Delta
 
1 STOP
DCA
Washington Reagan-National
DCA
Washington Reagan-National
Delta
 
1 STOP
STL
Lambert-St Louis
4 Jun - 11 Jun
$150pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
BWI
Baltimore/Washington
BWI
Baltimore/Washington
Multiple Airlines
   
2 STOPS
STL
Lambert-St Louis

Last minute flights from St Louis to Washington

Late deals on round-trip flights to Washington from St Louis, departing today and this week
4 Apr - 5 Apr
$180pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
Multiple Airlines
Non-Stop
STL
Lambert-St Louis
10 Apr - 17 Apr
$200pp
STL
Lambert-St Louis
Multiple Airlines
Non-Stop
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
3 Apr - 9 Apr
$258pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
Multiple Airlines
Non-Stop
STL
Lambert-St Louis

Alternative routes for St Louis to Washington

Destination information for Washington

Things to know before you go. Useful info for your trip from St Louis to Washington
Average temperature for April in Washington
69.8 °F
Avg rainfall for April in Washington
3.3 ″

Airports servicing St. Louis

Airports servicing Washington

Washington Dulles Intl (IAD)
Weekly flight availability
from St Louis to Washington
Sunday
7 daily flights
Monday
15 daily flights
Tuesday
11 daily flights
Wednesday
11 daily flights
Thursday
15 daily flights
Friday
15 daily flights
Saturday
7 daily flights

Related info for your journey

Useful info, stats and facts about St Louis to Washington flights.

Flight FAQs

From St Louis to Washington

Are flight prices decreasing from St Louis to Washington due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both St Louis and Washington for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Are there nonstop flights from St Louis to Washington for under $100 on Cheapflights?

There are no nonstop flights from St Louis to Washington, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.

Are there last-minute flights available from St Louis to Washington for under $200?

There are currently just 3 open flights from St Louis to Washington within the next 7 days for less than $200.

What days are nonstop flights available from St Louis to Washington?

You can find nonstop flights on the following days: Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday.

How popular is this flight route?

This flight path from Lambert-St Louis to Washington was viewed by 20 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

What percent of flights are delayed?

Flights from St Louis to Washington are usually delayed by 39min. so prepare accordingly.

What is the cheapest airline for this route?

When searching, try setting your filters to view flights for American Airlines Inc., as currently they have the cheapest options available from St Louis to Washington. On average you can find 74 flights for this flight path daily.

How long does the flight from St Louis to Washington take?

Travelers can expect a nonstop flight to take approximately 2 hours, flying a distance of about 448 miles.

How many flights depart from St Louis to Washington on average per day?

On average 28 flights depart from Lambert-St Louis to Washington per day.
Early Morning (Midnight to 6am) - 7% of flight departures
Morning (6am - Noon) - 36% of flight departures
Afternoon (Noon - 6pm) - 46% of flight departures
Evening (6pm - Midnight) - 11% of flight departures

Is St Louis weather warmer or cooler than Washington?

Expect the weather to be around 90 °F on average in July. As the temperature peaks, try to get your plans done early, as flight price and availability will have an impact on your travels. The climate in Washington is generally the same as in St Louis.