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Decatur to St. Louis flight ticket price

Compare live prices for DEC to STL. Use the search panel to change origin, destination, passengers, cabin and trip type instantly.
DEC → STL Approx. 177.02 km 10 May 2026 Live inventory
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Showing 25 of 45 live flights
United Airlines
UA-5032
19:25
05/10/2026
DEC
Decatur Airport
25h 48m
1 Stop
⏱ ORD · 23h 7mORD Airport
21:13
05/11/2026
+1
STL
St Louis Lambert International Airport
₹21,327
per person
✕ Non-refundable7 fare options
United Airlines
UA-5032
19:25
05/10/2026
DEC
Decatur Airport
3h 20m
1 Stop
⏱ ORD · 0h 42mORD Airport
22:45
05/10/2026
STL
St Louis Lambert International Airport
₹25,475
per person
✕ Non-refundable15 fare options
United Airlines
UA-5111
09:42
05/10/2026
DEC
Decatur Airport
4h 50m
1 Stop
⏱ ORD · 2h 6mORD Airport
14:32
05/10/2026
STL
St Louis Lambert International Airport
₹25,475
per person
✕ Non-refundable14 fare options
United Airlines
UA-5032
19:25
05/10/2026
DEC
Decatur Airport
4h 59m
1 Stop
⏱ ORD · 2h 22mORD Airport
00:24
05/11/2026
+1
STL
St Louis Lambert International Airport
₹25,475
per person
✕ Non-refundable14 fare options
United Airlines
UA-5111
09:42
05/10/2026
DEC
Decatur Airport
6h 57m
1 Stop
⏱ ORD · 4h 8mORD Airport
16:39
05/10/2026
STL
St Louis Lambert International Airport
₹29,028
per person
✕ Non-refundable11 fare options
United Airlines
UA-5111
09:42
05/10/2026
DEC
Decatur Airport
8h 30m
1 Stop
⏱ ORD · 5h 44mORD Airport
18:12
05/10/2026
STL
St Louis Lambert International Airport
₹29,270
per person
✕ Non-refundable2 fare options
United Airlines
UA-5111
09:42
05/10/2026
DEC
Decatur Airport
9h 11m
1 Stop
⏱ ORD · 6h 25mORD Airport
18:53
05/10/2026
STL
St Louis Lambert International Airport
₹29,270
per person
✕ Non-refundable2 fare options
United Airlines
UA-5111
09:42
05/10/2026
DEC
Decatur Airport
10h 9m
1 Stop
⏱ ORD · 7h 20mORD Airport
19:51
05/10/2026
STL
St Louis Lambert International Airport
₹29,270
per person
✕ Non-refundable2 fare options
United Airlines
UA-5111
09:42
05/10/2026
DEC
Decatur Airport
11h 31m
1 Stop
⏱ ORD · 8h 50mORD Airport
21:13
05/10/2026
STL
St Louis Lambert International Airport
₹29,270
per person
✕ Non-refundable2 fare options
United Airlines
UA-5111
09:42
05/10/2026
DEC
Decatur Airport
13h 3m
1 Stop
⏱ ORD · 10h 25mORD Airport
22:45
05/10/2026
STL
St Louis Lambert International Airport
₹29,270
per person
✕ Non-refundable2 fare options
United Airlines
UA-5111
09:42
05/10/2026
DEC
Decatur Airport
14h 42m
1 Stop
⏱ ORD · 12h 5mORD Airport
00:24
05/11/2026
+1
STL
St Louis Lambert International Airport
₹29,270
per person
✕ Non-refundable2 fare options
United Airlines
UA-5111
09:42
05/10/2026
DEC
Decatur Airport
22h 57m
1 Stop
⏱ ORD · 20h 11mORD Airport
08:39
05/11/2026
+1
STL
St Louis Lambert International Airport
₹33,980
per person
✕ Non-refundable🔥 Last 1 seats9 fare options
United Airlines
UA-5032
19:25
05/10/2026
DEC
Decatur Airport
23h 28m
1 Stop
⏱ ORD · 20h 42mORD Airport
18:53
05/11/2026
+1
STL
St Louis Lambert International Airport
₹33,980
per person
✕ Non-refundable🔥 Last 1 seats9 fare options
United Airlines
UA-5032
19:25
05/10/2026
DEC
Decatur Airport
24h 26m
1 Stop
⏱ ORD · 21h 37mORD Airport
19:51
05/11/2026
+1
STL
St Louis Lambert International Airport
₹33,980
per person
✕ Non-refundable🔥 Last 3 seats7 fare options
United Airlines
UA-5032
19:25
05/10/2026
DEC
Decatur Airport
13h 14m
1 Stop
⏱ ORD · 10h 28mORD Airport
08:39
05/11/2026
+1
STL
St Louis Lambert International Airport
₹34,338
per person
✕ Non-refundable2 fare options
United Airlines
UA-5111
09:42
05/10/2026
DEC
Decatur Airport
11h 27m
2 Stops
⏱ ORD · 6h 24mORD Airport⏱ DTW · 0h 46mDTW Airport
21:09
05/10/2026
STL
St Louis Lambert International Airport
₹36,803
per person
✕ Non-refundable2 fare options
United Airlines
UA-5111
09:42
05/10/2026
DEC
Decatur Airport
11h 56m
2 Stops
⏱ ORD · 4h 4mORD Airport⏱ ATL · 2h 57mATL Airport
21:38
05/10/2026
STL
St Louis Lambert International Airport
₹36,803
per person
✕ Non-refundable2 fare options
United Airlines
UA-5111
09:42
05/10/2026
DEC
Decatur Airport
13h 39m
2 Stops
⏱ ORD · 6h 46mORD Airport⏱ MSP · 2h 33mMSP Airport
23:21
05/10/2026
STL
St Louis Lambert International Airport
₹36,803
per person
✕ Non-refundable2 fare options
United Airlines
UA-5111
09:42
05/10/2026
DEC
Decatur Airport
13h 39m
2 Stops
⏱ ORD · 8h 18mORD Airport⏱ MSP · 0h 53mMSP Airport
23:21
05/10/2026
STL
St Louis Lambert International Airport
₹36,803
per person
✕ Non-refundable2 fare options
United Airlines
UA-5111
09:42
05/10/2026
DEC
Decatur Airport
14h 17m
2 Stops
⏱ ORD · 6h 15mORD Airport⏱ ATL · 2h 57mATL Airport
23:59
05/10/2026
STL
St Louis Lambert International Airport
₹36,803
per person
✕ Non-refundable2 fare options
United Airlines
UA-5032
19:25
05/10/2026
DEC
Decatur Airport
17h 45m
2 Stops
⏱ ORD · 10h 22mORD Airport⏱ DTW · 3h 2mDTW Airport
13:10
05/11/2026
+1
STL
St Louis Lambert International Airport
₹36,803
per person
✕ Non-refundable2 fare options
United Airlines
UA-5032
19:25
05/10/2026
DEC
Decatur Airport
17h 45m
2 Stops
⏱ ORD · 12h 44mORD Airport⏱ DTW · 0h 56mDTW Airport
13:10
05/11/2026
+1
STL
St Louis Lambert International Airport
₹36,803
per person
✕ Non-refundable2 fare options
United Airlines
UA-5032
19:25
05/10/2026
DEC
Decatur Airport
21h 51m
2 Stops
⏱ ORD · 14h 31mORD Airport⏱ DTW · 3h 6mDTW Airport
17:16
05/11/2026
+1
STL
St Louis Lambert International Airport
₹36,803
per person
✕ Non-refundable2 fare options
United Airlines
UA-5032
19:25
05/10/2026
DEC
Decatur Airport
21h 51m
2 Stops
⏱ ORD · 16h 44mORD Airport⏱ DTW · 1h 1mDTW Airport
17:16
05/11/2026
+1
STL
St Louis Lambert International Airport
₹36,803
per person
✕ Non-refundable2 fare options
United Airlines
UA-5032
19:25
05/10/2026
DEC
Decatur Airport
26h 13m
2 Stops
⏱ ORD · 20h 32mORD Airport⏱ ATL · 0h 43mATL Airport
21:38
05/11/2026
+1
STL
St Louis Lambert International Airport
₹36,803
per person
✕ Non-refundable2 fare options
😕 No flights match your filters.
Decatur (DEC)
📍 Decatur Airport
🌍 United States
🕐 GMT -6
📐 Latitude: 39.834598541259766
📐 Longitude: -88.8656997680664
St. Louis (STL)
📍 St Louis Lambert International Airport
🌍 United States
🕐 GMT -6
📐 Latitude: 38.748697
📐 Longitude: -90.370003

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

📅 Results on this page are loaded for 10 May 2026. Click View all flights for the complete live search.

Decatur to St. Louis — what to expect when booking

The DEC–STL 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 Decatur,USA and St. Louis,USA is approximately 177.02 km.

Before you book

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More flights from Decatur (DEC)
1 routes
Decatur → Chicago
DEC → ORD
More flights from St. Louis (STL)
55 routes
St. Louis → Atlanta
STL → ATL
St. Louis → Boston
STL → BOS
St. Louis → Burlington IA
STL → BRL
St. Louis → Cancun
STL → CUN
St. Louis → Cape Girardeau
STL → CGI
St. Louis → Charlotte
STL → CLT
St. Louis → Chicago
STL → MDW
St. Louis → Cincinnati
STL → CVG
St. Louis → Cleveland
STL → CLE
St. Louis → Columbus
STL → CMH
St. Louis → Dallas
STL → DAL
St. Louis → Decatur
STL → DEC
St. Louis → Denver
STL → DEN
St. Louis → Detroit
STL → DTW
St. Louis → Fort Lauderdale
STL → FLL
St. Louis → Fort Leonard Wood
STL → TBN
St. Louis → Fort Myers
STL → RSW
St. Louis → Fort Worth
STL → DFW
St. Louis → Grand Rapids
STL → GRR
St. Louis → Houston
STL → IAH
St. Louis → Houston
STL → HOU
St. Louis → Jonesboro
STL → JBR
St. Louis → Kansas City
STL → MCI
St. Louis → Kirksville
STL → IRK
St. Louis → Las Vegas
STL → LAS
St. Louis → Little Rock
STL → LIT
St. Louis → Los Angeles
STL → LAX
St. Louis → Marion
STL → MWA
St. Louis → Miami
STL → MIA
St. Louis → Milwaukee
STL → MKE
St. Louis → Minneapolis
STL → MSP
St. Louis → Montego Bay
STL → MBJ
St. Louis → Nashville
STL → BNA
St. Louis → New Orleans
STL → MSY
St. Louis → New York
STL → JFK
St. Louis → Oklahoma City
STL → OKC
St. Louis → Omaha
STL → OMA
St. Louis → Orlando
STL → MCO
St. Louis → Owensboro
STL → OWB
St. Louis → Philadelphia
STL → PHL
St. Louis → Phoenix
STL → PHX
St. Louis → Pittsburgh International Airport
STL → PIT
St. Louis → Puerto Vallarta
STL → PVR
St. Louis → Punta Cana
STL → PUJ
St. Louis → Quincy
STL → UIN
St. Louis → Raleigh
STL → RDU
St. Louis → Salt Lake City
STL → SLC
St. Louis → San Antonio
STL → SAT
St. Louis → San Diego
STL → SAN
St. Louis → San Francisco
STL → SFO
St. Louis → Seattle
STL → SEA
St. Louis → Tampa
STL → TPA
St. Louis → Toronto
STL → YYZ
St. Louis → Tulsa
STL → TUL
St. Louis → Washington DC
STL → DCA
❓ Frequently asked questions — Decatur to St. Louis 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 Decatur,USA (DEC) and St. Louis,USA (STL) 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.