Historical on-time performance
St. Croix Island to Miami
1,139 miData through May 2026Source: US DOT · BTS
Flights on STX–MIA arrive on time 78% of the time over the last 12 months.
On-time rate78%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled0.7%of scheduled flights
based on 680 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- American AirlinesOn-time78%Medianon timep9050 minCancel0.7%Flights680
Why flights run late
Delay causes
- Airline32%
- Weather1%
- Air traffic (NAS)5%
- Late aircraft51%
- Security10%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline40%
- Weather20%
- Air traffic (NAS)40%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 5 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 STX → MIA
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 92% on time.
- Mornings92% on time · p90 5 min · 146 flights · limited
- Afternoons74% on time · p90 45 min · 1,021 flights
- Evenings73% on time · p90 50 min · 566 flights
- Middays72% on time · p90 65 min · 118 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 69% to 83% on time.
- Wednesdays83% on time · p90 25 min · 247 flights
- Fridays78% on time · p90 40 min · 274 flights
- Tuesdays78% on time · p90 50 min · 250 flights
- Mondays75% on time · p90 40 min · 269 flights
- Thursdays75% on time · p90 45 min · 267 flights
- Sundays70% on time · p90 65 min · 272 flights
- Saturdays69% on time · p90 60 min · 272 flights
Keep exploring