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Flight distance & time
Washington Dulles International Airport → St Louis Downtown Airport
IADCPS
- Distance
- 1,101 km · 684 mi
- Flight time
- 02h 07m
- CO₂ per passenger
- 99 kg
This Washington Dulles International Airport → St Louis Downtown Airport route is 1,101 km (684 mi) end to end. The estimated flight time is 02h 07m, and a passenger's share of CO₂ works out at roughly 99 kg.
See the reverse route: St Louis Downtown Airport → Washington Dulles International Airport
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Your route
- FromIADWashington Dulles International AirportDulles, Virginia
- ToCPSSt Louis Downtown AirportCahokia/St Louis, Illinois
Flight map
Track your lifetime distance flown across every trip.
Route service
Average daily flights~0.1 flights/day
Airlines on this route
Sun Country Airlines
Common questions
Washington Dulles International Airport to St Louis Downtown Airport FAQ
How far is Washington Dulles International Airport from St Louis Downtown Airport?
Washington Dulles International Airport (IAD) and St Louis Downtown Airport (CPS) are 1,101 km (684 mi) apart, measured along the great-circle route.
How long is the flight from Washington Dulles International Airport to St Louis Downtown Airport?
A direct IAD–CPS flight covers the distance in about 02h 07m, though the exact time shifts with aircraft type and winds.
How much CO₂ does a flight from Washington Dulles International Airport to St Louis Downtown Airport produce?
A passenger's share of CO₂ on the IAD–CPS route is roughly 99 kg.
Which airlines fly from Washington Dulles International Airport to St Louis Downtown Airport?
Sun Country Airlines operate scheduled service between IAD and CPS.
Flight distance and time are estimates for ideal conditions — actual figures vary with aircraft type, routing and weather.
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