Flight Reliability
UA 4709 · United Airlines
GJT → Denver (GJT–DEN)100% of its flights flew this route. The rest (ORD–ATW) are included in these numbers.
81
Pretty Reliable
WanderNerd Reliability Score
- 81%
- Arrive within 15 minutes
- 6 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
Skip Tuesday if you can.
UA 4709 arrived on time 88% of the time on Saturdays. On Tuesdays: 75%.
A bit ahead of the GJT–DEN route.
UA 4709 arrived on time 81% of the time, versus 77% across the GJT–DEN route.
Recent months have been rougher.
UA 4709 arrived on time 76% of the time over the last three months in the data, compared with 86% in the three months before that.
The breakdown
- Mon77%(52 flights)
- Tue75%(52 flights)
- Wed84%(51 flights)
- Thu79%(52 flights)
- Fri84%(49 flights)
- Sat88%(50 flights)
- Sun81%(52 flights)
77%
May
Jun 63% → May 77% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 63% | 30 |
| July 2025 | 94% | 31 |
| August 2025 | 61% | 31 |
| September 2025 | 93% | 30 |
| October 2025 | 87% | 31 |
| November 2025 | 89% | 26 |
| December 2025 | 83% | 30 |
| January 2026 | 93% | 30 |
| February 2026 | 82% | 28 |
| March 2026 | 73% | 30 |
| April 2026 | 77% | 30 |
| May 2026 | 77% | 31 |
- Departures on time
- 81%
- Diverted
- 0%
- Flights flown
- 358
- 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.