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Cheap flights from Washington to St. Louis
Round-trip
Economy
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 | $126 | The best flight deal from Washington to St. Louis found on momondo in the last 72 hours is $126 |
| Fastest flight time | 2h 31m | The fastest flight from Washington to St. Louis takes 2h 31m. |
| Direct flights | Fr | Direct flights go from Washington to St. Louis on Friday. Airline offering direct flights is United Airlines.. |
| 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 from Washington 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 depart Washington for 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 from Washington 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 from Washington?
Frontier
Frontier, Delta, and Major Airline are the most popular carriers operating from Washington to St. Louis
What is the cheapest Washington to St. Louis flight route?
Washington Reagan-National - Lambert-St Louis
Fly from Washington Reagan-National to Lambert-St Louis for the best Washington - St. Louis flight prices
How far in advance should you book Washington to St. Louis flights?
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
Multiple Airlines![Multiple Airlines]()
![Multiple Airlines]()
Apr 29
10:15 amBaltimore/Washington
7h 18m
1 stop
5:33 pm
Lambert-St Louis
May 3
10:42 amLambert-St Louis
4h 29m
1 stop
3:11 pm
Baltimore/Washington
Multiple Airlines![Multiple Airlines]()
![Multiple Airlines]()
Apr 8
9:55 amWashington Reagan-National
2h 20m
12:15 pm
Lambert-St Louis
Apr 10
7:12 amLambert-St Louis
9h 47m
1 stop
4:59 pm
Washington Reagan-National
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
Best airlines flying from Washington to St. Louis
Compare and see reviews for airlines that fly from Washington to St. Louis with momondo
AirlineFree CancellationPrice
PriceFrom $105
Free Cancellation
PriceFrom $128
Free Cancellation
Reviews
Pros: Entertainment
Cons: The seat space/leg room is tiny. I found it impossible to fall asleep, being in the middle of a row of three with two "big" people in either side.
1 / 8
PriceFrom $155
Free Cancellation
Reviews
Pros: I appreciate the choice of snacks.
Cons: The coffee served on the flight was lukewarm.
1 / 9
PriceFrom $155
Free Cancellation
Reviews
Pros: It was meh....
Cons: I got no notification that the flight was going to be 1 hour earlier
1 / 6
PriceFrom $208
Free Cancellation
Which airlines flying from Washington to Lambert-St Louis have COVID-19 safety policies in place?
Airlines such as 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.