Flight Reliability
UA 200 · United Airlines
GUM → Honolulu (GUM–HNL)
87
Pretty Reliable
WanderNerd Reliability Score
- 90%
- Arrive within 15 minutes
- 5 min early
- Average arrival delay
- 2.5%
- Cancelled
- 8 min early
- Median arrival delay
Based on 365 historical flights. Data through May 2026.
What the data says
Saturdays have been rough.
UA 200 arrived on time 96% of the time on Fridays and just 80% on Saturdays. That gap is worth planning around.
Better than the United Airlines network average.
UA 200 arrived on time 90% of the time, versus 79% across the United Airlines network.
Recent months have been rougher.
UA 200 arrived on time 83% of the time over the last three months in the data, compared with 96% in the three months before that.
The breakdown
- Mon88%(49 flights)
- Tue96%(48 flights)
- Wed86%(51 flights)
- Thu92%(51 flights)
- Fri96%(52 flights)
- Sat80%(51 flights)
- Sun91%(53 flights)
80%
May
Jun 89% → May 80% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 89% | 28 |
| July 2025 | 94% | 31 |
| August 2025 | 87% | 31 |
| September 2025 | 97% | 29 |
| October 2025 | 94% | 31 |
| November 2025 | 83% | 29 |
| December 2025 | 100% | 31 |
| January 2026 | 90% | 31 |
| February 2026 | 96% | 27 |
| March 2026 | 87% | 31 |
| April 2026 | 81% | 26 |
| May 2026 | 80% | 30 |
- Departures on time
- 84%
- Diverted
- 0.3%
- Flights flown
- 355
- Months covered
- 12
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.