Route
EWR → SDF
Newark Liberty International Airport Louisville Muhammad Ali International Airport
How punctual is this route?
- On-time arrivals
- 80.7%
- Less than 15 minutes late
- Cancelled
- 5.8%
- Of scheduled flights
- Average delay when late
- 88 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,020
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 45%
- Airline (crew, maintenance, cleaning) 26%
- Air traffic control & airport 19%
- Extreme weather 10%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 88.5% | 63 |
| October 2025 | 74.7% | 93 |
| November 2025 | 74.4% | 86 |
| December 2025 | 75.7% | 74 |
| January 2026 | 84.8% | 87 |
| February 2026 | 88.9% | 80 |
| March 2026 | 76.7% | 88 |
| April 2026 | 85.5% | 83 |
| May 2026 | 92.1% | 91 |
| June 2026 | 81.4% | 90 |
| July 2026 | 71.6% | 92 |
| August 2026 | 76.2% | 93 |
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 | 1,016 | 80.8% | 5.8% | 88 min |
| United Airlines | 3 | 66.7% | 0.0% | 62 min |
| NK | 1 | 100.0% | 0.0% | — |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
YX3609
21% late · 228 flights
-
YX3531
20% late · 165 flights
-
YX3415
19% late · 134 flights
-
YX3629
6% late · 93 flights
-
YX3421
12% late · 82 flights
-
YX3678
27% late · 80 flights
-
YX3714
19% late · 53 flights
-
YX3512
44% late · 47 flights
-
YX3483
22% late · 35 flights
-
YX3412
0% late · 21 flights
-
YX3496
5% late · 21 flights
-
YX3599
5% late · 21 flights
-
YX3579
25% late · 20 flights
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