Historical on-time performance
Miami to Jacksonville
335 miData through May 2026Source: US DOT · BTS
Flights on MIA–JAX arrive on time 72% of the time over the last 12 months.
On-time rate72%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled1.0%of scheduled flights
based on 1,534 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Envoy AirbestOn-time83%Medianon timep9030 minCancel0.9%Flights703
- American AirlinesOn-time64%Medianon timep9070 minCancel1.1%Flights831
Why flights run late
Delay causes
- Airline31%
- Weather8%
- Air traffic (NAS)15%
- Late aircraft46%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline7%
- Weather47%
- Air traffic (NAS)47%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 15 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 MIA → JAX
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 — 89% on time.
- Mornings89% on time · p90 10 min · 1,108 flights
- Middays83% on time · p90 30 min · 662 flights
- Afternoons67% on time · p90 70 min · 765 flights
- Overnights66% on time · p90 65 min · 1,391 flights
- Evenings63% on time · p90 85 min · 1,378 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 65% to 78% on time.
- Tuesdays78% on time · p90 45 min · 754 flights
- Wednesdays76% on time · p90 50 min · 727 flights
- Mondays74% on time · p90 60 min · 755 flights
- Saturdays71% on time · p90 55 min · 774 flights
- Fridays71% on time · p90 60 min · 772 flights
- Thursdays71% on time · p90 60 min · 754 flights
- Sundays65% on time · p90 80 min · 768 flights
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