New calculation
Flight distance & time
Lambert St Louis International Airport → Decatur Airport
STLDEC
- Distance
- 177 km · 109 mi
- Flight time
- 00h 58m
- CO₂ per passenger
- 15 kg
This Lambert St Louis International Airport → Decatur Airport route is 177 km (109 mi) end to end. The estimated flight time is 00h 58m, and a passenger's share of CO₂ works out at roughly 15 kg.
See the reverse route: Decatur Airport → Lambert St Louis International Airport
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Your route
- FromSTLLambert St Louis International AirportSt Louis, Missouri
- ToDECDecatur AirportDecatur, 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
Lambert St Louis International Airport to Decatur Airport FAQ
How far is Lambert St Louis International Airport from Decatur Airport?
Lambert St Louis International Airport (STL) and Decatur Airport (DEC) are 177 km (109 mi) apart, measured along the great-circle route.
How long is the flight from Lambert St Louis International Airport to Decatur Airport?
A direct STL–DEC flight covers the distance in about 00h 58m, though the exact time shifts with aircraft type and winds.
How much CO₂ does a flight from Lambert St Louis International Airport to Decatur Airport produce?
A passenger's share of CO₂ on the STL–DEC route is roughly 15 kg.
Flight distance and time are estimates for ideal conditions — actual figures vary with aircraft type, routing and weather.
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