Cheap flights from Washington to St. Louis

Round-trip
Economy
Washington (WAS)
St. Louis (STL)
Sun 12/27
Sun 1/3
Any month
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Flight information for Washington to St. Louis
(WAS to STL)

Find info about flight duration, direct flights, and airports for your flight from Washington to St. Louis
Best Price Found $110 The best flight deal from Washington to St. Louis found on momondo in the last 72 hours is $110
Fastest flight time 2h 25m The fastest flight from Washington to St. Louis takes 2h 25m.
Direct flights Mo, Tu, We, Sa and Su Direct flights go from Washington to St. Louis on Monday, Tuesday, Wednesday, Saturday and Sunday. Airlines offering direct flights are: Lufthansa, Avianca and South African.
Airports in St. Louis 1 airport There is 1 airport near St. Louis: Lambert-St Louis (STL)

How to get the cheapest flight ticket from Washington to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to St. Louis?
July
The cheapest time of year to fly to St. Louis from Washington is July. Most expensive is January
What is the cheapest day to fly to St. Louis?
Tuesday
The cheapest day of the week is typically Tuesday. The most expensive is typically Sunday
When is the cheapest time to fly to St. Louis?
at noon
Washington to St. Louis flights are approximately 11% more expensive in the afternoon than at noon
What is the cheapest airline that flies to St. Louis?
Frontier
Frontier, Delta, and Major Airline are the most popular carriers operating from Washington to St. Louis
What is the cheapest route?
Washington Reagan-National - Lambert-St Louis
Fly from Washington Reagan-National to Lambert-St Louis for the best Washington - St. Louis flight prices
When is the cheapest time to book a flight to St. Louis?
31 days before
The cheapest time to buy a flight from Washington to St. Louis is approximately 31 days to departure
60
Days before departure
0

Easily compare round-trip flights from Washington to St. Louis

Below you can see the best fares for your round-trip flight route over the next three months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Washington to St. Louis by changing tabs
Cheapest
Best
Quickest
Frontier
Jan 24
DCA
Washington Reagan-National
17h 38m
1 stop
STL
Lambert-St Louis
Jan 31
STL
Lambert-St Louis
24h 38m
1 stop
DCA
Washington Reagan-National
Multiple Airlines
Dec 19
DCA
Washington Reagan-National
8h 37m
1 stop
STL
Lambert-St Louis
Jan 4
STL
Lambert-St Louis
4h 59m
1 stop
DCA
Washington Reagan-National
Frontier
Jan 8
BWI
Baltimore/Washington
8h 29m
1 stop
STL
Lambert-St Louis
Jan 14
STL
Lambert-St Louis
18h 43m
1 stop
BWI
Baltimore/Washington

Find the cheapest one-way flights from Washington to St. Louis

If you're looking for one-way flights from Washington to St. Louis, view some of our deals below provided by Frontier
Cheapest
Best
Quickest
Frontier
Jan 8
BWI
Baltimore/Washington
8h 29m
1 stop
STL
Lambert-St Louis
Multiple Airlines
Jan 14
BWI
Baltimore/Washington
14h 02m
1 stop
STL
Lambert-St Louis
United Airlines
Dec 24
IAD
Washington Dulles Intl
2h 34m
STL
Lambert-St Louis

Which airlines flying from Washington to Lambert-St Louis have COVID-19 safety policies in place?

Airlines such as Southwest and Delta have taken additional precautions to make sure you’re safer while traveling. Many airlines flying from Washington to Lambert-St Louis are offering enhanced cleaning of their aircraft. Additional policies include pre-flight testing for COVID-19-related symptoms and antibodies. Masks are also required and are provided to travelers. Some airlines are offering socially-distanced seating for a limited time. Policies will vary by airline so keep this in mind as you search for options.

Are airlines flying from Washington to Lambert-St Louis offering flexible cancellation due to COVID-19?

Due to the global impact of COVID-19, some of our airline partners operating flights from Washington to Lambert-St Louis, such as American Airlines, United Airlines, and Delta may have put in place flexible cancellation policies. Use our site to search for all of the airlines offering this flexibility to you.


Alternative routes for Washington to St. Louis

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
Washington to Kansas City Flights
Fastest flight time
5h 28m
Cheapest price
$123

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