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STL to DEC: distance & flight time
St. Louis (St Louis Lambert International Airport) → Decatur (Decatur Airport)
110 mi
177 km · 96 nm
45m
estimated nonstop flight time
Same time
time difference · heading northeast
See live STL→DEC fares Phone-only fares on this route — call free
Flight time details
110 miles nonstop takes roughly 45m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- STL — St Louis Lambert International Airport · St. Louis, United States
- DEC — Decatur Airport · Decatur, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near STL
- SUS · Spirit of St Louis Airport16 mi away
- ALN · St Louis Regional Airport20 mi away
- BLV · Scott AFB/Midamerica Airport32 mi away
- SPI · Abraham Lincoln Capital Airport84 mi away
Frequently asked questions
How far is STL from DEC?
The flight distance from St. Louis (STL) to Decatur (DEC) is 110 miles (177 km, 96 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from STL to DEC?
A nonstop flight takes about 45m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the cheapest way to fly from STL to DEC?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on STL–DEC that never appear on search engines, with no booking fees.