About 1 in 4 UA 3609 flights from Newark arrived 15+ minutes late, diverted or cancelled over the past year (28%); 8.3% were cancelled. The typical flight landed 13 minutes early.
UA 3609: EWR → SDF
Scheduled to leave Newark at 8:45 p.m. local time, operated by Republic Airways as YX 3609. Over the past year it arrived on time 72% of the time (228 flights), better than other UA flights on the route at that hour (67%). Last seen in the data Aug 31, 2026.
Usually United Airlines's last flight of the day from Newark to Louisville (97% of days). United Airlines's last EWR–SDF flight was cancelled 8.4% of the time, against 4.2% for its earlier ones. If it's cancelled, the next United Airlines flight is usually around 10:05 a.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 33 | 70% |
| Tuesday | 33 | 82% |
| Wednesday | 32 | 75% |
| Thursday | 32 | 63% |
| Friday | 33 | 85% |
| Saturday | 33 | 76% |
| Sunday | 32 | 56% |
Why it was late
All flights EWR → SDF · Connecting off UA 3609? Check the risk
Questions
How often is UA 3609 from EWR to SDF late?
United Airlines 3609 from Newark, NJ to Louisville, KY arrived 15 or more minutes late, was diverted or was cancelled on 28% of 228 scheduled flights between September 2025 and August 2026. 8.3% were cancelled.
Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check United Airlines for today's flight. Method.