Flight information for Washington Dulles Intl Airport to St. Louis
(IAD to STL)
Find info about flight duration, direct flights, and airports for your flight from Washington Dulles Intl Airport to St. Louis
| Best Price Found | $165 | The best flight deal from Washington Dulles Intl Airport to St. Louis found on momondo in the last 72 hours is $165 |
| Fastest flight time | 2h 04m | The fastest flight from Washington Dulles Intl Airport to St. Louis takes 2h 04m |
| Direct flights | None | There are no direct flights from Washington Dulles Intl Airport to St. Louis. Popular non-direct route for this connection is Washington Dulles Intl Airport - Lambert-St Louis Airport. |
| 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 Dulles Intl Airport 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 Dulles Intl Airport to St. Louis?
July
The cheapest time of year to fly to St. Louis from Washington Dulles Intl Airport is July. Most expensive is March
What is the cheapest airline that flies to St. Louis from Washington Dulles Intl Airport?
Frontier
American Airlines, Delta, and Frontier are the most popular carriers operating from Washington Dulles Intl Airport to St. Louis
How far in advance should you book Washington Dulles Intl Airport to St. Louis flights?
39 days before
The cheapest time to buy a flight from Washington Dulles Intl Airport to St. Louis is approximately 39 days to departure
Easily compare round-trip flights from Washington Dulles Intl Airport 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 Dulles Intl Airport to St. Louis by changing tabs
American Airlines![American Airlines]()
Nov 10![American Airlines]()
Nov 15
IAD1:09 amWashington Dulles Intl
7h 07m
1 stop
STL8:16 amLambert-St Louis
STL7:25 amLambert-St Louis
6h 05m
1 stop
IAD1:30 pmWashington Dulles Intl
United Airlines![United Airlines]()
Nov 1![United Airlines]()
Nov 6
IAD1:25 pmWashington Dulles Intl
2h 25m
STL3:50 pmLambert-St Louis
STL9:15 amLambert-St Louis
2h 06m
IAD11:21 amWashington Dulles Intl
Multiple Airlines![Multiple Airlines]()
Nov 6![Multiple Airlines]()
Nov 30
IAD8:30 amWashington Dulles Intl
2h 23m
STL10:53 amLambert-St Louis
STL12:22 amLambert-St Louis
4h 11m
1 stop
IAD4:33 amWashington Dulles Intl
Delta![Delta]()
Nov 1![Delta]()
Nov 3
IAD2:58 pmWashington Dulles Intl
5h 38m
1 stop
STL8:36 pmLambert-St Louis
STL6:25 amLambert-St Louis
5h 36m
1 stop
IAD12:01 pmWashington Dulles Intl
United Airlines![United Airlines]()
Nov 1![United Airlines]()
Nov 3
IAD4:50 amWashington Dulles Intl
2h 28m
STL7:18 amLambert-St Louis
STL4:25 amLambert-St Louis
6h 25m
1 stop
IAD10:50 amWashington Dulles Intl
Find the cheapest one-way flights from Washington Dulles Intl Airport to St. Louis
If you're looking for one-way flights from Washington Dulles Intl Airport to St. Louis, view some of our deals below provided by Frontier, Major Airline and United Airlines
Search last-minute flights to St. Louis from Washington Dulles Intl Airport
Find and compare flight prices for your last-minute flight from Washington Dulles Intl Airport to St. Louis
Multiple Airlines![Multiple Airlines]()
Oct 27![Multiple Airlines]()
Nov 1
IAD9:00 amWashington Dulles Intl
24h 32m
3 stops
STL9:32 amLambert-St Louis
STL3:00 amLambert-St Louis
31h 55m
3 stops
IAD10:55 amWashington Dulles Intl
United Airlines![United Airlines]()
Oct 27![United Airlines]()
Oct 30
IAD5:00 amWashington Dulles Intl
2h 19m
STL7:19 amLambert-St Louis
STL4:30 amLambert-St Louis
2h 04m
IAD6:34 amWashington Dulles Intl
American Airlines![American Airlines]()
Oct 27![American Airlines]()
Nov 4
IAD9:56 amWashington Dulles Intl
4h 26m
1 stop
STL2:22 pmLambert-St Louis
STL2:29 pmLambert-St Louis
4h 30m
1 stop
IAD6:59 pmWashington Dulles Intl
Delta![Delta]()
Oct 27![Delta]()
Nov 2
IAD1:55 amWashington Dulles Intl
3h 55m
1 stop
STL5:50 amLambert-St Louis
STL2:00 amLambert-St Louis
4h 42m
1 stop
IAD6:42 amWashington Dulles Intl
Multiple Airlines![Multiple Airlines]()
Oct 27![Multiple Airlines]()
Oct 31
IAD9:00 amWashington Dulles Intl
24h 32m
3 stops
STL9:32 amLambert-St Louis
STL3:00 amLambert-St Louis
32h 05m
3 stops
IAD11:05 amWashington Dulles Intl
Best airlines flying from Washington Dulles Intl Airport to St. Louis
Compare and see reviews for airlines that fly from Washington Dulles Intl Airport to St. Louis with momondo
AirlineFree CancellationPrice
PriceFrom $105
Free Cancellation
Reviews
Crew had zero concern that passengers were removing masks for extended periods of time (as in 40-50% of the flight) in violation of federal policy. This was happening in both sides of row one directly in front of crew including conversations with the crew with unmasked passengers
1 / 10
PriceFrom $128
Free Cancellation
Reviews
Flight attendant for first class is definitely not a morning person. Oh and the WiFi DID NOT WORK!
1 / 10
PriceFrom $155
Free Cancellation
Reviews
Great
1 / 10
PriceFrom $198
Free Cancellation
Reviews
Not because the flight is going to Africa we can’t get better service on board
1 / 10
Are airlines flying from Washington Dulles Intl to Lambert-St Louis offering flexible cancellation due to COVID-19?
Some of our partner airlines flying from Washington Dulles Intl to Lambert-St Louis are adopting new policies due to the global impact of COVID-19. Some of the airlines that may be waiving their cancellation fees are United Airlines, American Airlines, and Delta. You can search for the full list of airlines like United Airlines that are offering this flexibility.
How far is Washington Dulles Intl to Lambert-St Louis by plane?
The straight-line distance from Washington Dulles Intl to Lambert-St Louis is 685.9 mi. By plane, this route typically takes 2h 19m.
Can I fly to Lambert-St Louis from Washington Dulles Intl right now?
Information is based on travel restrictions for travel to Lambert-St Louis within the United States
Most visitors from Washington Dulles Intl need to provide a negative COVID-19 test result and/or quarantine to enter Lambert-St Louis.
COVID-19 testing requirements
Visitors from Washington Dulles Intl must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Lambert-St Louis.
Quarantine requirements
Visitors from Washington Dulles Intl are not required to quarantine after entering Lambert-St Louis.
Most visitors from Washington Dulles Intl need to provide a negative COVID-19 test result and/or quarantine to enter Lambert-St Louis.
COVID-19 testing requirements
Visitors from Washington Dulles Intl must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Lambert-St Louis.
Quarantine requirements
Visitors from Washington Dulles Intl are not required to quarantine after entering Lambert-St Louis.
Can I fly back to Washington Dulles Intl from Lambert-St Louis?
Returning to Washington Dulles Intl from Lambert-St Louis
COVID-19 testing requirements
Visitors from Lambert-St Louis must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Washington Dulles Intl.
Quarantine requirements
Visitors from Lambert-St Louis are not required to quarantine after entering Washington Dulles Intl.
COVID-19 testing requirements
Visitors from Lambert-St Louis must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Washington Dulles Intl.
Quarantine requirements
Visitors from Lambert-St Louis are not required to quarantine after entering Washington Dulles Intl.