St Louis to Decatur flights
Routavio compares airline fares from several flight booking sites. The lowest one-way fare it found for St Louis to Decatur is €162 with United Airlines (checked on 29 Oct 2026).
Your next trip, last seen at €162
Lowest observedUnited Airlines · 1 stop · One wayWhen to fly
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The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.
One-way fare
- Lowest observed
- €162, departing 25 Nov 2026 (Last checked: 29 Oct 2026)One-way fare · Priced departure days checked in the last 14 days: 14Check live prices for this route
- Airlines seen
- United Airlines
- Non-stop
- Yes
About this route
Explore the fares we observed from St Louis to Decatur. Prices move often, so pick your dates to see the latest options.
- Route distance
- 177 km
- Alternative airports
- SUS
Route-level information; individual journeys vary.
Published schedules report non-stop service with Electra Airways. Check current timetables.
A clearer picture of your fare
If the observed fare for this date drops, we will email you. At most one message a day.
Airport to city: straight-line distance
- St. Louis Lambert International Airport (STL) → St Louis, city gazetteer reference point (38.6270, -90.1994): ≈ 20 km.
- Decatur Airport (DEC) → Decatur, city gazetteer reference point (39.8342, -88.8686): ≈ 0 km.
Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.
Lowest fare by departure month
Cheapest month from St Louis to Decatur: November 2026, from €162 (checked 29 Oct 2026).
| Month | Lowest fare | Priced days |
|---|---|---|
| November 2026 | €162 | 7 |
| December 2026 | €177 | 3 |
One-way fares checked in the last 14 days. Each figure is the lowest priced departure day we saw, not a guaranteed fare.
Lowest fare by days before departure
Lowest fare from St Louis to Decatur by days until departure (8 to 30 days): €162 (checked 29 Oct 2026).
| Days before departure | Lowest fare | Priced days |
|---|---|---|
| 8 to 30 days | €162 | 10 |
| 61 days or more | €162 | 4 |
One-way fares checked in the last 14 days. Each figure is the lowest stored fare for that distance to departure, not a price forecast.
Fares for different departure dates, checked now; not a guide to when to book.
Frequently asked
How much is a flight from St Louis to Decatur?
The lowest fare Routavio has observed is €162, found on 29 Oct 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from St Louis to Decatur?
Cheapest month from St Louis to Decatur: November 2026, from €162 (checked 29 Oct 2026).
Are there direct flights from St Louis to Decatur?
Yes. Published schedules report non-stop flights on this route with Electra Airways.
Which airlines fly from St Louis to Decatur?
Routavio has seen these carriers on the route: United Airlines.
How observed prices work, what "No data" means and what a fare includes: Read the flight price guide · Price and schedule freshness on Routavio
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Recently observed fares. Prices may change.