Decatur to St Louis flight
Flights from Decatur to St Louis start at €31.41 and take 3h 48m at their fastest.
Check dates and fares
Fares and seats move by the day. Price Decatur to St Louis on the date you actually want, rather than on the date this page was built.
The Flights from Decatur to St Louis starts at €31.41 and takes 3h 48m door to door, run by 1 operator over 177 km, with around 1 departure a day. Fares bottom out about 30 days before departure.
- 3h 48mDoor to door
- 38mMoving
- €31.41 to €45.57From
- 06:12 to 06:12First and last departure
- 1Per day
- 43.5 kgCO2
First and last are taken from the services we sell on 29 September 2026. The return direction keeps its own timetable and is not these times reversed.
€31.41 to €45.57 for one passenger across the 14 departure dates priced here. The low end is one day, not every day. Worked out from this corridor rather than held for anybody. The operator sets the price on the day.
Fares by date
What this journey usually costs, by departure date. It shows which days run dearer.
Typical fares
- about €42.03Tue15
- about €44.98Wed16
- about €40.26Thu17
- about €45.57Fri18
- about €43.21Sat19
- about €34.36Sun20
- about €31.41Mon21
- about €31.41Tue22
- about €31.41Wed23
- about €32.00Thu24
- about €34.36Fri25
- about €37.90Sat26
- about €36.72Sun27
- about €31.41Mon28
Based on what this route has cost recently. The operator sets the price on the day, and the live fare is confirmed when you book.
The cheapest and the fastest on 29 September 2026
No bookable itinerary on the day this page prices, so none is shown.
Airlines
| Operator | From | Fastest | Typical speed | Flexibility | On board |
|---|---|---|---|---|---|
 Air Choice One | €31.41 | 3h 48m | 740 km/h | Fixed fare | Not published |
The flight gets you into St Louis. It does not get you a bed, and neither do we.
A room in St Louis for the night the flight gets in
Sort by distance from Union Station and you can see which places are ten minutes on foot and which are not.
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When to book Decatur to St Louis
The same search run across the whole booking window, so the shape of the curve is visible rather than described.
- €25.0990 days
- €20.1460 days
- €27.2945 days
- €16.8430 days
- €26.7421 days
- €28.3914 days
- €25.647 days
- €40.263 days
- €39.391 days
- Cheapest lead time
- Fares bottom out around 30 days ahead, at €16.84.
- How much it moves
- The gap between the cheapest and dearest lead time is 139 percent. The dearest point is €40.26, 3 days out.
- What that means
- Today sits inside the cheap window, which closes about 30 days before departure. Waiting from here has usually cost money on this corridor rather than saved it.
Which departure day costs least
Median cheapest fare for each weekday, taken across the next three weeks of real prices.
- €27.29Sun
- €26.74Mon
- €28.94Tue
- €31.41Wed
- €32.00Thu
- €30.59Fri
- €34.99Sat
Where you leave from and where you arrive
Decatur
- SPI
- DEC
St. Louis
- STL
What the journey actually looks like
- How far it really runs
- The route covers 177 km against 172 km in a straight line, a detour of 2 percent. Track and road geometry account for the difference.
- First and last departure
- The first service of the day leaves Decatur at 06:12 and the last at 06:12, across 1 departure The return direction keeps its own timetable, so the times back are not these times reversed.
Flights against the other ways to make this journey
| Mode | Door to door | Moving | At the ends | From | CO2 | Per day |
|---|---|---|---|---|---|---|
| Train | 2h | 1h 16m | 44m | €25.64 | 5.7 kg | 1 |
| Flight | 3h 48m | 38m | 3h 10m | €31.41 | 43.5 kg | 1 |
Questions about Decatur to St Louis
The questions people actually ask about this journey, answered from the same prices and times the page above is built on rather than written once and left to go stale.
How long does the Flight from Decatur to St Louis take?
The Flight from Decatur to St Louis takes 3h 48m door to door, of which 38m is spent moving. The route runs 177 km. The difference between the two times is reaching the terminal and leaving it at the far end, which every time on this page includes.
How much does the Flight from Decatur to St Louis cost?
The Flight from Decatur to St Louis starts at €31.41 for one passenger, as of 14 September 2026. A typical fare is €31.41. Both are the total including taxes, supplier fees and our service fee, so the price here is the price at checkout.
Who runs the Flight from Decatur to St Louis?
1 operators run the Flight from Decatur to St Louis: Air Choice One. Between them they file around 1 departure a day. The operator table on this page compares them on fare, journey time, cruising speed, fare conditions and what is provided on board.
Which terminal does the Flight from Decatur to St Louis use?
The Flight from Decatur to St Louis leaves from Decatur SPI and arrives at St. Louis STL. Allow about 3h 10m for reaching the departure terminal and leaving the arrival one. That time is already inside every door to door figure quoted on this page.
Is the Flight the best way from Decatur to St Louis?
Travelling from Decatur to St Louis by Train costs €25.64 and takes 2h door to door, against 3h 48m by Flight. Which is better depends on whether the money or the hours matter more on this trip. The comparison table on this page shows every mode side by side.
When should I book the Flight from Decatur to St Louis?
Fares for the Flight from Decatur to St Louis bottom out around 30 days ahead, at €16.84. The gap between the cheapest and dearest lead time across the window is 139 percent, measured on 14 September 2026. Booking inside the final week has consistently cost more.
How much CO2 does the Flight from Decatur to St Louis produce?
The Flight from Decatur to St Louis produces about 43.5 kg of CO2 per passenger over 177 km, which works out at roughly 246 grams per passenger kilometre. That figure is for the whole journey and for one traveller, not for the vehicle.
Where these numbers come from
Places, coordinates, operators, which operator serves which pair, and every distance on this page are real and come from open data. Where a corridor has a filed timetable the departure times are real too, and ferry fares are the prices the operators publish themselves.
Observed service A carrier record shows this named operator serving this named pair, and we carry that through unchanged.
Where no operator publishes a fare for a corridor, the price here is our own estimate, worked out from the real distance and the real operator through a fare curve that follows lead time, day of the week and season. It tells you roughly what the journey costs. It is not a seat anyone has agreed to sell, and the payment step will not take it.
Defined in full at Door to door, Fares, The booking window, Carbon
- On this page
- Every figure above was computed for Decatur to St Louis on 14 September 2026: 177 km of route against 172 km in a straight line, 1 services a day, 1 operator a cheapest fare of €31.41, and 3h 48m door to door on the fastest mode. The return direction is computed separately and its numbers are not these numbers.