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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 February or March, booked 58 days in advance, depart on a Saturday or Tuesday and return on a Tuesday

$330
$300
$280
$251
Price
$251 - $312
Temperature
48 - 90 °F
Rainfall
2 - 4 inches
Most popular in October High demand for flights, 3% potential price rise
Cheapest in February Best time to find cheap flights, 1% potential price drop
Average price $277 Price for this month
Cheapest price $251 From St Louis to Washington

Cheap flights from St Louis to Washington in January 2020

The best prices found for STL to IAD flights for January
29 Jan - 30 Jan
$340pp
STL
Lambert-St Louis
Frontier
 
1 STOP
DCA
Washington Reagan-National
DCA
Washington Reagan-National
Frontier
 
1 STOP
STL
Lambert-St Louis

St Louis to Washington 2020 flight deals

Cheap flights to Washington from St Louis found for this year
10 Apr - 15 Apr
$159pp
STL
Lambert-St Louis
American Airlines
Non-Stop
DCA
Washington Reagan-National
DCA
Washington Reagan-National
American Airlines
Non-Stop
STL
Lambert-St Louis
21 Apr - 22 Apr
$174pp
STL
Lambert-St Louis
American Airlines
 
1 STOP
BWI
Baltimore/Washington
BWI
Baltimore/Washington
American Airlines
 
1 STOP
STL
Lambert-St Louis
9 Apr - 12 Apr
$197pp
STL
Lambert-St Louis
Delta
 
1 STOP
BWI
Baltimore/Washington
BWI
Baltimore/Washington
Delta
 
1 STOP
STL
Lambert-St Louis

Non-stop flights to Washington from St Louis

Save time with St Louis to Washington direct flight deals
10 Apr - 15 Apr
$159pp
STL
Lambert-St Louis
American Airlines
Non-Stop
DCA
Washington Reagan-National
DCA
Washington Reagan-National
American Airlines
Non-Stop
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
29 Jan - 30 Jan
$340pp
STL
Lambert-St Louis
Frontier
 
1 STOP
DCA
Washington Reagan-National
DCA
Washington Reagan-National
Frontier
 
1 STOP
STL
Lambert-St Louis
25 Jan - 26 Feb
$349pp
STL
Lambert-St Louis
United Airlines
 
1 STOP
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
United Airlines
Non-Stop
STL
Lambert-St Louis
24 Jan - 26 Jan
$371pp
STL
Lambert-St Louis
Major Airline
Non-Stop
DCA
Washington Reagan-National
DCA
Washington Reagan-National
Major Airline
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
Flight duration
2h 19m
Average temperature for January in Washington
48.2 °F
Avg rainfall for January in Washington
3.3 ″

Airports servicing St. Louis

Airports servicing Washington

Washington Dulles Intl (IAD)
Weekly flight availability
from St Louis to Washington
Sunday
4 daily flights
Monday
17 daily flights
Tuesday
17 daily flights
Wednesday
20 daily flights
Thursday
19 daily flights
Friday
17 daily flights
Saturday
2 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

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 23 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.

How many passenger seats are available on a flight on this route?

Expect 616 seats to be available on average per day for flights from Lambert-St Louis to Washington.

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 41 flights depart from Lambert-St Louis to Washington per day.
Early Morning (Midnight to 6am) - 2% of flight departures
Morning (6am - Noon) - 34% of flight departures
Afternoon (Noon - 6pm) - 34% of flight departures
Evening (6pm - Midnight) - 29% 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.