Flight Reliability
UA 4668 · United Airlines
Denver → BFL (DEN–BFL)93% of its flights flew this route. The rest (COS–DEN) are included in these numbers.
85
Pretty Reliable
WanderNerd Reliability Score
- 81%
- Arrive within 15 minutes
- 8 min
- Average arrival delay
- 1.1%
- Cancelled
- 0 min
- Median arrival delay
Based on 365 historical flights. Data through May 2026.
What the data says
Morning-you made the right choice.
UA 4668 departing between 9 AM–12 PM arrived on time 84% of the time, versus 38% between 6–9 PM.
Friday is doing you no favors.
UA 4668 arrived on time 85% of the time on Saturdays. On Fridays: 75%.
Trending in the right direction.
UA 4668 arrived on time 89% of the time over the last three months in the data, compared with 81% in the three months before that.
The breakdown
- Mon77%(52 flights)
- Tue84%(51 flights)
- Wed81%(52 flights)
- Thu84%(51 flights)
- Fri75%(51 flights)
- Sat85%(52 flights)
- Sun81%(52 flights)
- 9 AM–12 PM84%(340 flights)
- 6–9 PM38%(21 flights)
94%
May
Jun 50% → May 94% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 50% | 26 |
| July 2025 | 65% | 31 |
| August 2025 | 87% | 31 |
| September 2025 | 80% | 30 |
| October 2025 | 84% | 31 |
| November 2025 | 90% | 30 |
| December 2025 | 81% | 31 |
| January 2026 | 84% | 31 |
| February 2026 | 79% | 28 |
| March 2026 | 90% | 31 |
| April 2026 | 83% | 30 |
| May 2026 | 94% | 31 |
- Departures on time
- 86%
- Diverted
- 0%
- Flights flown
- 361
- 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.