Flight Reliability
UA 3653 · United Airlines
Louisville → Chicago (SDF–ORD)
85
Pretty Reliable
WanderNerd Reliability Score
- 84%
- Arrive within 15 minutes
- 6 min
- Average arrival delay
- 1.8%
- Cancelled
- 5 min early
- Median arrival delay
Based on 333 historical flights. Data through May 2026.
What the data says
Friday is doing you no favors.
UA 3653 arrived on time 89% of the time on Saturdays. On Fridays: 77%.
A bit ahead of the SDF–ORD route.
UA 3653 arrived on time 84% of the time, versus 77% across the SDF–ORD route.
A bit ahead of the United Airlines network.
UA 3653 arrived on time 84% of the time, versus 79% across the United Airlines network.
The breakdown
- Mon81%(47 flights)
- Tue85%(47 flights)
- Wed87%(46 flights)
- Thu85%(47 flights)
- Fri77%(47 flights)
- Sat89%(46 flights)
- Sun83%(47 flights)
- 6–9 AM83%(145 flights)
- 9 AM–12 PM85%(182 flights)
86%
Apr
Jun 87% → Apr 86% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 87% | 30 |
| July 2025 | 77% | 30 |
| August 2025 | 93% | 30 |
| September 2025 | 93% | 30 |
| October 2025 | 90% | 31 |
| November 2025 | 85% | 27 |
| December 2025 | 81% | 31 |
| January 2026 | 77% | 30 |
| February 2026 | 82% | 28 |
| March 2026 | 71% | 31 |
| April 2026 | 86% | 29 |
- Departures on time
- 93%
- Diverted
- 0%
- Flights flown
- 327
- Months covered
- 11
Same route, other flights
Keep nerding
Based on 333 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.