Saipan (SPN) to Guam (GUM): On-Time Performance
Data through July 2026
Saipan (SPN) to Guam (GUM) effectively runs on two schedules. In December 2024, 100% of arrivals were on time; in April 2026 that fell to 63% — a 38-point seasonal swing. Across the full period the route averages 90% on-time against a national 78%.
- On-time
- 90%
- arrived <15 min late
- Avg delay
- 10 min
- completed flights
- Cancelled
- 1.6%
- Flights/day
- 1.0
- last 12 months
- Duration
- 45m
- scheduled
- Distance
- 129 mi
Monthly on-time trend
Best time to fly from SPN to GUM
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 91% | 18 min |
| Tuesday | 94% | 2 min |
| Wednesday | 87% | 19 min |
| Thursday | 88% | 16 min |
| Fridaybest | 94% | 7 min |
| Saturday | 84% | 6 min |
| Sunday | 93% | 4 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft57%
- Airline operations24%
- National airspace system5%
- Weather14%
Frequently asked questions
- How often are flights from SPN to GUM delayed?
- 10% of SPN–GUM flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 10 minutes.
- How long is the flight from SPN to GUM?
- The scheduled SPN–GUM flight time averages 45m over 129 miles. Actual arrival times vary — flights on this route land 15+ minutes late 10% of the time.
- How often are SPN to GUM flights cancelled?
- 1.6% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from SPN to GUM?
- April 2026 was the roughest month in this dataset, with only 63% of arrivals on time. The best was December 2024 at 100%. If your dates are flexible, that 38-point gap is worth planning around.
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Based on 763 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.