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St. Louis (STL) to Decatur (DEC) Flights from ₹24,535

Fares on this route currently start from ₹24,535. Compare live STL to DEC prices, non-stop and connecting flights, departure times and airline choices before booking. Use the search panel to change origin, destination, passengers, cabin and trip type instantly.
STL → DEC Approx. 177.02 km 04 Jun 2026 Live inventory
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Showing 25 of 64 live flights
United Airlines
UA-4423
07:22
06/04/2026
STL
St Louis Lambert International Airport
25h 35m
1 Stop
⏱ ORD · 22h 45mORD Airport
08:57
06/05/2026
+1
DEC
Decatur Airport
₹24,535
per person
✕ Non-refundable2 fare options
United Airlines
UA-4567
08:10
06/04/2026
STL
St Louis Lambert International Airport
24h 47m
1 Stop
⏱ ORD · 22h 0mORD Airport
08:57
06/05/2026
+1
DEC
Decatur Airport
₹24,535
per person
✕ Non-refundable🔥 Last 1 seats2 fare options
United Airlines
UA-1382
13:13
06/04/2026
STL
St Louis Lambert International Airport
4h 43m
1 Stop
⏱ ORD · 2h 2mORD Airport
17:56
06/04/2026
DEC
Decatur Airport
₹28,213
per person
✕ Non-refundable6 fare options
United Airlines
UA-4395
11:25
06/04/2026
STL
St Louis Lambert International Airport
6h 31m
1 Stop
⏱ ORD · 3h 42mORD Airport
17:56
06/04/2026
DEC
Decatur Airport
₹28,213
per person
✕ Non-refundable🔥 Last 4 seats5 fare options
United Airlines
UA-4517
10:25
06/04/2026
STL
St Louis Lambert International Airport
22h 32m
1 Stop
⏱ ORD · 19h 48mORD Airport
08:57
06/05/2026
+1
DEC
Decatur Airport
₹29,186
per person
✕ Non-refundable🔥 Last 2 seats2 fare options
United Airlines
UA-4517
10:25
06/04/2026
STL
St Louis Lambert International Airport
7h 31m
1 Stop
⏱ ORD · 4h 48mORD Airport
17:56
06/04/2026
DEC
Decatur Airport
₹29,186
per person
✕ Non-refundable🔥 Last 2 seats2 fare options
United Airlines
UA-1382
13:13
06/04/2026
STL
St Louis Lambert International Airport
19h 44m
1 Stop
⏱ ORD · 17h 2mORD Airport
08:57
06/05/2026
+1
DEC
Decatur Airport
₹29,657
per person
✕ Non-refundable2 fare options
United Airlines
UA-4395
11:25
06/04/2026
STL
St Louis Lambert International Airport
21h 32m
1 Stop
⏱ ORD · 18h 42mORD Airport
08:57
06/05/2026
+1
DEC
Decatur Airport
₹29,657
per person
✕ Non-refundable🔥 Last 2 seats2 fare options
United Airlines
UA-1639
17:29
06/04/2026
STL
St Louis Lambert International Airport
24h 27m
1 Stop
⏱ ORD · 21h 45mORD Airport
17:56
06/05/2026
+1
DEC
Decatur Airport
₹38,105
per person
✕ Non-refundable🔥 Last 1 seats2 fare options
Delta Air Lines
DL-1536
07:05
06/04/2026
STL
St Louis Lambert International Airport
10h 51m
2 Stops
⏱ ATL · 2h 57mATL Airport⏱ ORD · 2h 58mORD Airport
17:56
06/04/2026
DEC
Decatur Airport
₹52,514
per person
✕ Non-refundable
Delta Air Lines
DL-1626
06:45
06/04/2026
STL
St Louis Lambert International Airport
11h 11m
2 Stops
⏱ DTW · 3h 16mDTW Airport⏱ ORD · 3h 44mORD Airport
17:56
06/04/2026
DEC
Decatur Airport
₹52,514
per person
✕ Non-refundable
Delta Air Lines
DL-1597
06:21
06/04/2026
STL
St Louis Lambert International Airport
11h 35m
2 Stops
⏱ MSP · 3h 41mMSP Airport⏱ MDW · 3h 26mMDW Airport
17:56
06/04/2026
DEC
Decatur Airport
₹52,514
per person
✕ Non-refundable
Delta Air Lines
DL-1524
06:00
06/04/2026
STL
St Louis Lambert International Airport
11h 56m
2 Stops
⏱ ATL · 3h 54mATL Airport⏱ ORD · 2h 58mORD Airport
17:56
06/04/2026
DEC
Decatur Airport
₹52,514
per person
✕ Non-refundable
Delta Air Lines
DL-1536
07:05
06/04/2026
STL
St Louis Lambert International Airport
10h 51m
2 Stops
⏱ ATL · 1h 21mATL Airport⏱ MDW · 4h 49mMDW Airport
17:56
06/04/2026
DEC
Decatur Airport
₹53,048
per person
✕ Non-refundable
Delta Air Lines
DL-1626
06:45
06/04/2026
STL
St Louis Lambert International Airport
11h 11m
2 Stops
⏱ DTW · 3h 8mDTW Airport⏱ MDW · 4h 3mMDW Airport
17:56
06/04/2026
DEC
Decatur Airport
₹53,048
per person
✕ Non-refundable
Delta Air Lines
DL-1626
06:45
06/04/2026
STL
St Louis Lambert International Airport
11h 11m
2 Stops
⏱ DTW · 0h 41mDTW Airport⏱ ORD · 6h 16mORD Airport
17:56
06/04/2026
DEC
Decatur Airport
₹53,048
per person
✕ Non-refundable
Delta Air Lines
DL-1597
06:21
06/04/2026
STL
St Louis Lambert International Airport
11h 35m
2 Stops
⏱ MSP · 2h 11mMSP Airport⏱ ORD · 4h 58mORD Airport
17:56
06/04/2026
DEC
Decatur Airport
₹53,048
per person
✕ Non-refundable
Delta Air Lines
DL-1524
06:00
06/04/2026
STL
St Louis Lambert International Airport
11h 56m
2 Stops
⏱ ATL · 2h 18mATL Airport⏱ MDW · 4h 49mMDW Airport
17:56
06/04/2026
DEC
Decatur Airport
₹53,048
per person
✕ Non-refundable
Delta Air Lines
DL-1393
19:01
06/04/2026
STL
St Louis Lambert International Airport
13h 56m
2 Stops
⏱ ATL · 1h 2mATL Airport⏱ ORD · 7h 46mORD Airport
08:57
06/05/2026
+1
DEC
Decatur Airport
₹53,048
per person
✕ Non-refundable
Delta Air Lines
DL-1393
19:01
06/04/2026
STL
St Louis Lambert International Airport
22h 55m
2 Stops
⏱ ATL · 1h 2mATL Airport⏱ ORD · 16h 46mORD Airport
17:56
06/05/2026
+1
DEC
Decatur Airport
₹53,048
per person
✕ Non-refundable
Delta Air Lines
DL-1536
07:05
06/04/2026
STL
St Louis Lambert International Airport
25h 52m
2 Stops
⏱ ATL · 1h 21mATL Airport⏱ MDW · 19h 49mMDW Airport
08:57
06/05/2026
+1
DEC
Decatur Airport
₹53,048
per person
✕ Non-refundable
Delta Air Lines
DL-1536
07:05
06/04/2026
STL
St Louis Lambert International Airport
25h 52m
2 Stops
⏱ ATL · 2h 57mATL Airport⏱ ORD · 17h 58mORD Airport
08:57
06/05/2026
+1
DEC
Decatur Airport
₹53,048
per person
✕ Non-refundable
Delta Air Lines
DL-1626
06:45
06/04/2026
STL
St Louis Lambert International Airport
26h 12m
2 Stops
⏱ DTW · 0h 41mDTW Airport⏱ ORD · 21h 16mORD Airport
08:57
06/05/2026
+1
DEC
Decatur Airport
₹53,048
per person
✕ Non-refundable
Delta Air Lines
DL-1626
06:45
06/04/2026
STL
St Louis Lambert International Airport
26h 12m
2 Stops
⏱ DTW · 3h 8mDTW Airport⏱ MDW · 19h 3mMDW Airport
08:57
06/05/2026
+1
DEC
Decatur Airport
₹53,048
per person
✕ Non-refundable
Delta Air Lines
DL-1626
06:45
06/04/2026
STL
St Louis Lambert International Airport
26h 12m
2 Stops
⏱ DTW · 3h 16mDTW Airport⏱ ORD · 18h 44mORD Airport
08:57
06/05/2026
+1
DEC
Decatur Airport
₹53,048
per person
✕ Non-refundable
😕 No flights match your filters.
St. Louis (STL)
📍 St Louis Lambert International Airport
🌍 United States
🕐 GMT -6
📐 Latitude: 38.748697
📐 Longitude: -90.370003
Decatur (DEC)
📍 Decatur Airport
🌍 United States
🕐 GMT -6
📐 Latitude: 39.834598541259766
📐 Longitude: -88.8656997680664

✈ Distance: St. Louis,USA to Decatur,USA — 177.02 km

📅 Results on this page are loaded for 04 Jun 2026. Click View all flights for the complete live search.

St. Louis to Decatur — what to expect when booking

The STL–DEC route is served by multiple carriers throughout the year. Fares on this route can move quickly — a price available now may not be there 30 minutes later.

If your dates are flexible, try shifting your departure by a day or two using the date strip above. Mid-week departures often show lower base fares compared to weekend starts on many routes.

The distance between St. Louis,USA and Decatur,USA is approximately 177.02 km.

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More flights from Decatur (DEC)
2 routes
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❓ Frequently asked questions — St. Louis to Decatur flights

Generally yes — fares on most routes are most competitive around 4–6 weeks before departure. Booking earlier usually means better availability and a lower base fare when your dates are fixed.

The straight-line distance between St. Louis,USA (STL) and Decatur,USA (DEC) is approximately 177.02 km. Actual flying distance may vary slightly depending on routing.

Non-stop availability on this route varies by airline schedule and season. Use the filters below to quickly check whether direct options are available on your selected date.

Mid-week departures often show lower prices than weekend travel on many routes. Use the date strip above to compare nearby days quickly.