Flight Reliability
UA 5310 · United Airlines
Denver → SAF (DEN–SAF)
85
Pretty Reliable
WanderNerd Reliability Score
- 77%
- Arrive within 15 minutes
- 7 min
- Average arrival delay
- 0%
- Cancelled
- 8 min early
- Median arrival delay
Based on 365 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
UA 5310 arrived on time 87% of the time on Saturdays and just 64% on Sundays. That gap is worth planning around.
A bit behind the DEN–SAF route.
UA 5310 arrived on time 77% of the time, versus 81% across the DEN–SAF route.
It basically never cancels.
Out of 365 scheduled flights, only 0.0% were cancelled.
Ticking up lately.
UA 5310 arrived on time 73% of the time over the last three months in the data, compared with 69% in the three months before that.
The breakdown
- Mon75%(52 flights)
- Tue79%(52 flights)
- Wed77%(52 flights)
- Thu79%(52 flights)
- Fri77%(52 flights)
- Sat87%(52 flights)
- Sun64%(53 flights)
81%
May
Jun 73% → May 81% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 73% | 30 |
| July 2025 | 81% | 31 |
| August 2025 | 81% | 31 |
| September 2025 | 83% | 30 |
| October 2025 | 87% | 31 |
| November 2025 | 90% | 30 |
| December 2025 | 71% | 31 |
| January 2026 | 68% | 31 |
| February 2026 | 68% | 28 |
| March 2026 | 65% | 31 |
| April 2026 | 73% | 30 |
| May 2026 | 81% | 31 |
- Departures on time
- 78%
- Diverted
- 0%
- Flights flown
- 365
- 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.