Flight Reliability
UA 3609 · United Airlines
Newark → Louisville (EWR–SDF)85% of its flights flew this route. The rest (ORD–ECP, MKE–EWR) are included in these numbers.
- 77%
- Arrive within 15 minutes
- 9 min
- Average arrival delay
- 8.0%
- Cancelled
- 12 min early
- Median arrival delay
Based on 324 historical flights. Data through May 2026.
What the data says
Morning-you made the right choice.
UA 3609 departing between 6–9 AM arrived on time 91% of the time, versus 74% between 6–9 PM.
Sunday scaries are real for this one.
UA 3609 arrived on time 90% of the time on Tuesdays and just 64% on Sundays. That gap is worth planning around.
A bit behind the EWR–SDF route.
UA 3609 arrived on time 77% of the time, versus 82% across the EWR–SDF route.
Keep a backup plan handy.
UA 3609 was cancelled 8.0% of the time. Typical for U.S. flights is around 1–2%.
The breakdown
- Mon75%(44 flights)
- Tue90%(41 flights)
- Wed77%(43 flights)
- Thu73%(41 flights)
- Fri83%(46 flights)
- Sat77%(44 flights)
- Sun64%(39 flights)
- 6–9 AM91%(21 flights)
- 9 AM–12 PM83%(12 flights)
- 12–3 PM80%(10 flights)
- 6–9 PM74%(174 flights)
- 9 PM–12 AM79%(81 flights)
Jun 57% → May 87% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 57% | 14 |
| July 2025 | 60% | 25 |
| August 2025 | 73% | 30 |
| September 2025 | 82% | 28 |
| October 2025 | 70% | 30 |
| November 2025 | 80% | 25 |
| December 2025 | 79% | 28 |
| January 2026 | 85% | 27 |
| February 2026 | 88% | 25 |
| March 2026 | 78% | 27 |
| May 2026 | 87% | 31 |
- Departures on time
- 76%
- Diverted
- 0%
- Flights flown
- 298
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 324 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.