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Flight distance & time
St Louis Downtown Airport → St Louis Regional Airport
CPSALN
- Distance
- 36 km · 22 mi
- Flight time
- 00h 47m
- CO₂ per passenger
- 3 kg
This St Louis Downtown Airport → St Louis Regional Airport route is 36 km (22 mi) end to end. The estimated flight time is 00h 47m, and a passenger's share of CO₂ works out at roughly 3 kg.
See the reverse route: St Louis Regional Airport → St Louis Downtown Airport
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Your route
- FromCPSSt Louis Downtown AirportCahokia/St Louis, Illinois
- ToALNSt Louis Regional AirportAlton/St Louis, Illinois
Flight map
Track your lifetime distance flown across every trip.
Route service
We don't have scheduled-service data for this route — it may be operated by non-commercial or charter flights only.
Common questions
St Louis Downtown Airport to St Louis Regional Airport FAQ
How far is St Louis Downtown Airport from St Louis Regional Airport?
St Louis Downtown Airport (CPS) and St Louis Regional Airport (ALN) are 36 km (22 mi) apart, measured along the great-circle route.
How long is the flight from St Louis Downtown Airport to St Louis Regional Airport?
A direct CPS–ALN flight covers the distance in about 00h 47m, though the exact time shifts with aircraft type and winds.
How much CO₂ does a flight from St Louis Downtown Airport to St Louis Regional Airport produce?
A passenger's share of CO₂ on the CPS–ALN route is roughly 3 kg.
Flight distance and time are estimates for ideal conditions — actual figures vary with aircraft type, routing and weather.
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