Best Time to Fly GUM to HNL: On-Time Stats by Hour & Airline
Guam International → Daniel K Inouye International
Data through July 2026 · Last updated October 18, 2026
365 flights were scheduled from Guam (GUM) to Honolulu (HNL) in the last 12 months, and 88.4% of those that flew arrived on time, 10.8 points above the US average of 77.6%.
United Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Tuesday was the most reliable day (95% on time) and May the worst month (87%).
The cancellation rate was 2.7% (US average 1.8%).
GUM to HNL on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| United Airlines | 88.4% | 79 min | 2.7% | 365 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly GUM to HNL
On-time arrival % by scheduled departure hour (local time), 730 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 91.2% | 2.2% | 730 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on GUM to HNL
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | Limited data | 14 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 90.0% | -1.6 pts | 0.0% | 30 |
| Summer peak (Jun 15 - Aug 15) | 89.1% | -2.6 pts | 4.0% | 124 |
| All other days | 91.6% | — | 2.0% | 562 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).