Historical on-time performance
San Juan to St. Croix Island
94 miData through Dec 2025Source: US DOT · BTS
Flights on SJU–STX arrive on time 82% of the time over the last 12 months.
On-time rate82%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.7%of scheduled flights
based on 276 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- JetBlue AirwaysOn-time82%Medianon timep9035 minCancel0.7%Flights276
Why flights run late
Delay causes
- Airline34%
- Weather1%
- Air traffic (NAS)8%
- Late aircraft57%
- Security1%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly SJU → STX
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 76% to 81% on time.
- Afternoons81% on time · p90 55 min · 252 flights
- Middays76% on time · p90 30 min · 106 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 67% to 83% on time.
- Tuesdays83% on time · p90 25 min · 52 flights · limited
- Thursdays81% on time · p90 35 min · 58 flights · limited
- Sundays67% on time · p90 75 min · 60 flights · limited
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