SPN to GUM flight delays & on-time performance
Nonstop flights from Saipan International Airport to Antonio B. Won Pat International Airport · 129 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SPN or GUM right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Saipan (SPN) to Guam (GUM) arrived on time 86% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 2.7% were cancelled, and 3% arrived an hour or more late.
- United Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 6am did best (92% on time); around 9am did worst (86%).
- Friday was the most reliable day to fly (94% on time) and Saturday the least (80%).
- The largest source of delay minutes was late-arriving aircraft (65%).
Which airline is most on time from SPN to GUM?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| United Airlines | 86% | 2.7% | 11 min | 2.8% | 365 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am45%14 flights
- 6am92%49 flights
- 9am86%300 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday82%5.8% cancelled
- Tuesday88%3.8% cancelled
- Wednesday82%1.9% cancelled
- Thursday84%1.9% cancelled
- Friday94%1.9% cancelled
- Saturday80%1.9% cancelled
- Sunday88%1.9% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft65%
- Airline (crew, maintenance, cleaning, fueling)27%
- Air traffic control & airport congestion7%
- Extreme weather0%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather90%
- Airline (crew, maintenance, cleaning, fueling)10%
- Air traffic control & airport congestion0%
- Security0%
SPN to GUM: common questions
- How often are SPN to GUM flights on time?
- 86% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Saipan to Guam cancelled?
- 2.7% of scheduled flights were cancelled (10 of 365).
- How long are typical delays?
- Across all flights the average arrival delay was 11 min (early arrivals count as zero). Flights that were late arrived 72 min behind schedule on average, and 2.8% of flights were an hour or more late.
- How long is taxi time at SPN?
- Flights on this route spent 12 min taxiing from the gate to takeoff on average.
Related routes
More flights to Guam
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SPN → GUM, nonstop flights by US airlines that report to the DOT. How we calculate this.