Route
ORD → SDF
Chicago O'Hare International Airport Louisville Muhammad Ali International Airport
How punctual is this route?
- On-time arrivals
- 75.8%
- Less than 15 minutes late
- Cancelled
- 3.6%
- Of scheduled flights
- Average delay when late
- 75 min
- Flights arriving 15+ minutes late
- Flights tracked
- 2,792
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 51%
- Airline (crew, maintenance, cleaning) 23%
- Air traffic control & airport 20%
- Extreme weather 7%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 88.7% | 222 |
| October 2025 | 85.2% | 256 |
| November 2025 | 78.5% | 194 |
| December 2025 | 62.7% | 179 |
| January 2026 | 65.1% | 181 |
| February 2026 | 73.0% | 198 |
| March 2026 | 69.0% | 219 |
| April 2026 | 73.5% | 312 |
| May 2026 | 78.4% | 311 |
| June 2026 | 75.1% | 231 |
| July 2026 | 78.4% | 248 |
| August 2026 | 74.7% | 241 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| Republic Airways | 1,850 | 75.8% | 4.1% | 80 min |
| SkyWest Airlines | 650 | 72.4% | 3.1% | 66 min |
| Envoy Air | 282 | 84.6% | 1.1% | 58 min |
| United Airlines | 5 | 20.0% | 0.0% | 45 min |
| American Airlines | 4 | 50.0% | 0.0% | 71 min |
| OH | 1 | — | 100.0% | — |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
YX3598
26% late · 348 flights
-
YX3551
24% late · 275 flights
-
YX4603
25% late · 258 flights
-
YX4593
29% late · 86 flights
-
YX3659
26% late · 82 flights
-
YX4668
13% late · 74 flights
-
YX4704
7% late · 71 flights
-
YX4480
31% late · 66 flights
-
OO5412
29% late · 64 flights
-
MQ3741
10% late · 52 flights
-
YX3520
28% late · 50 flights
-
YX4432
28% late · 46 flights
-
YX4630
17% late · 44 flights
-
YX4697
26% late · 44 flights
-
YX4599
21% late · 43 flights
-
YX4646
7% late · 43 flights
-
OO5467
18% late · 41 flights
-
OO5703
29% late · 41 flights
-
YX4360
39% late · 36 flights
-
OO5571
22% late · 35 flights
-
OO5607
41% late · 35 flights
-
OO4670
18% late · 34 flights
-
MQ4005
3% late · 33 flights
-
OO5671
41% late · 32 flights
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