Cheap flights from St. Louis to Decatur
110 mi · 45m average nonstop
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Quick answer: St. Louis to Decatur at a glance
Cheap flights from St. Louis (STL) to Decatur (DEC) cover 110 miles (176 km) in about 45m nonstop, with 1 airline flying direct — a short-haul domestic route. Search Kayak for today's cheapest live fare. Route difficulty 1/10.
Summary computed from real OpenFlights coordinates — not an estimate. Prices update live on Kayak.
Flying from St. Louis to Decatur covers 110 miles (177 km) in approximately 0 hour 45 minutes. 1 airline offers direct flights on this short-haul domestic route. This is a short-haul domestic route typically served by direct flights.
Nonstop distance 110 miles. Direct carriers include 3E.
We don't track historical prices for this route yet. Search live fares on Kayak for today's best price across 100+ airlines and booking sites.
Airlines on this route
1 airlines fly St. Louis → Decatur. All are direct routes.
| Airline | Route type |
|---|---|
| 3E | Direct |
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St. Louis to Decatur — quick answers
How far is St. Louis from Decatur by plane?
The nonstop flight distance from St. Louis (STL) to Decatur (DEC) is 110 miles (176 km), calculated as a great-circle line from published OpenFlights airport coordinates. Actual flown distance is slightly longer due to airways and winds.
How long is the flight from St. Louis to Decatur?
The average nonstop flight time from STL to DEC is 45 minutes. Gate-to-gate time is usually 20–35 minutes longer; connecting itineraries add 1–4 hours depending on the layover.
Which airlines fly from St. Louis to Decatur?
1 airlines serve this route nonstop: 3E. Schedules and amenities differ by carrier — compare live frequencies and fare classes on Kayak before you book.