Historical on-time performance
Agana to Saipan
129 miData through May 2026Source: US DOT · BTS
Flights on GUM–SPN arrive on time 89% of the time over the last 12 months.
On-time rate89%arrived within 15 min
p90 delay10 min1 in 10 flights is worse (tail risk)
Cancelled2.1%of scheduled flights
based on 337 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesOn-time89%Medianon timep9010 minCancel2.1%Flights337
Why flights run late
Delay causes
- Airline70%
- Weather10%
- Air traffic (NAS)9%
- Late aircraft11%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline14%
- Weather86%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 7 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly GUM → SPN
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best day of week
On-time rates are fairly even by day on this route — ranging from 88% to 98% on time.
- Tuesdays98% on time · p90 on time · 156 flights · limited
- Fridays97% on time · p90 on time · 158 flights · limited
- Sundays97% on time · p90 5 min · 158 flights · limited
- Thursdays94% on time · p90 on time · 170 flights · limited
- Mondays94% on time · p90 on time · 170 flights · limited
- Saturdays91% on time · p90 10 min · 157 flights · limited
- Wednesdays88% on time · p90 15 min · 156 flights · limited
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