Flight Reliability
UA 4684 · United Airlines
Denver → SAF (DEN–SAF)100% of its flights flew this route. The rest (OMA–IAH) are included in these numbers.
75
Usually Fine
WanderNerd Reliability Score
- 78%
- Arrive within 15 minutes
- 13 min
- Average arrival delay
- 1.9%
- Cancelled
- 7 min early
- Median arrival delay
Based on 365 historical flights. Data through May 2026.
What the data says
Friday is doing you no favors.
UA 4684 arrived on time 82% of the time on Tuesdays. On Fridays: 70%.
A bit behind the DEN–SAF route.
UA 4684 arrived on time 78% of the time, versus 81% across the DEN–SAF route.
Ticking up lately.
UA 4684 arrived on time 82% of the time over the last three months in the data, compared with 78% in the three months before that.
The breakdown
- Mon79%(52 flights)
- Tue82%(51 flights)
- Wed80%(51 flights)
- Thu76%(49 flights)
- Fri70%(50 flights)
- Sat80%(51 flights)
- Sun75%(52 flights)
- 12–3 PM—(1 flights)
- 6–9 PM78%(355 flights)
90%
May
Jun 47% → May 90% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 47% | 30 |
| July 2025 | 54% | 28 |
| August 2025 | 80% | 30 |
| September 2025 | 83% | 30 |
| October 2025 | 94% | 31 |
| November 2025 | 90% | 30 |
| December 2025 | 73% | 30 |
| January 2026 | 79% | 29 |
| February 2026 | 82% | 27 |
| March 2026 | 77% | 30 |
| April 2026 | 80% | 30 |
| May 2026 | 90% | 31 |
- Departures on time
- 75%
- Diverted
- 0.5%
- Flights flown
- 356
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 365 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.