Best Time to Fly SPN to GUM: On-Time Stats by Hour & Airline
Francisco C. Ada Saipan International → Guam International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 85.6% of Saipan (SPN) to Guam (GUM) flights arrived on time (365 scheduled flights). That is 8.0 points above the national average of 77.6%.
United Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Friday was the most reliable day (94% on time) and July the worst month (76%).
The cancellation rate was 2.7% (US average 1.8%).
SPN to GUM 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 | 85.6% | 72 min | 2.7% | 365 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SPN to GUM
On-time arrival % by scheduled departure hour (local time), 732 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 14 | |
| 6am–7am | 91.8% | 0.0% | 49 |
| 9am–10am | 90.7% | 1.4% | 665 |
| 3pm–4pm | Limited data | 2 | |
| 9pm–10pm | Limited data | 1 | |
| 10pm–11pm | Limited data | 1 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SPN to GUM
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) | 93.3% | +2.0 pts | 0.0% | 30 |
| Summer peak (Jun 15 - Aug 15) | 81.8% | -9.5 pts | 2.4% | 124 |
| All other days | 91.3% | — | 1.6% | 564 |
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).