Historical on-time performance
Miami to St. Croix Island
1,139 miData through Dec 2025Source: US DOT · BTS
Flights on MIA–STX arrive on time 74% of the time over the last 12 months.
On-time rate74%arrived within 15 min
p90 delay45 min1 in 10 flights is worse (tail risk)
Cancelled0.0%of scheduled flights
based on 565 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- American AirlinesOn-time74%Medianon timep9045 minCancel0.0%Flights565
Why flights run late
Delay causes
- Airline36%
- Weather5%
- Air traffic (NAS)16%
- Late aircraft43%
- Security0%
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 MIA → STX
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Middays are the most reliable time of day to fly this route — 76% on time.
- Middays76% on time · p90 40 min · 1,589 flights
- Evenings66% on time · p90 65 min · 180 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 69% to 84% on time.
- Wednesdays84% on time · p90 25 min · 245 flights
- Tuesdays78% on time · p90 40 min · 246 flights
- Fridays77% on time · p90 40 min · 266 flights
- Thursdays76% on time · p90 55 min · 261 flights
- Mondays75% on time · p90 45 min · 266 flights
- Sundays70% on time · p90 65 min · 267 flights
- Saturdays69% on time · p90 45 min · 266 flights
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