Historical on-time performance
St. Thomas to San Juan
Flights on STT–SJU arrive on time 70% of the time over the last 12 months.
based on 477 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- JetBlue AirwaysOn-time70%Medianon timep9085 minCancel2.3%Flights477
Why flights run late
Delay causes
- Airline16%
- Weather1%
- Air traffic (NAS)15%
- Late aircraft67%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline9%
- Weather64%
- Air traffic (NAS)27%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 11 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 STT → SJU
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 67% to 70% on time.
- Middays70% on time · p90 65 min · 624 flights
- Evenings67% on time · p90 50 min · 158 flights · limited
- Afternoons67% on time · p90 80 min · 1,086 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 61% to 78% on time.
- Tuesdays78% on time · p90 50 min · 249 flights
- Wednesdays73% on time · p90 70 min · 240 flights
- Thursdays71% on time · p90 70 min · 271 flights
- Sundays69% on time · p90 50 min · 257 flights
- Fridays64% on time · p90 75 min · 241 flights
- Saturdays62% on time · p90 90 min · 377 flights
- Mondays61% on time · p90 85 min · 233 flights
Keep exploring