Historical on-time performance
Miami to Key West
126 miData through Dec 2025Source: US DOT · BTS
Flights on MIA–EYW arrive on time 85% of the time over the last 12 months.
On-time rate85%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled1.0%of scheduled flights
based on 1,294 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Envoy AirOn-time85%Medianon timep9025 minCancel1.0%Flights1,294
Why flights run late
Delay causes
- Airline20%
- Weather12%
- Air traffic (NAS)31%
- Late aircraft37%
- 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 → EYW
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 81% to 87% on time.
- Mornings87% on time · p90 15 min · 251 flights
- Middays83% on time · p90 30 min · 1,745 flights
- Evenings81% on time · p90 30 min · 990 flights
- Afternoons81% on time · p90 30 min · 615 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 79% to 86% on time.
- Tuesdays86% on time · p90 20 min · 511 flights
- Wednesdays86% on time · p90 20 min · 489 flights
- Mondays85% on time · p90 20 min · 515 flights
- Fridays81% on time · p90 30 min · 522 flights
- Thursdays81% on time · p90 25 min · 503 flights
- Sundays81% on time · p90 30 min · 529 flights
- Saturdays79% on time · p90 40 min · 559 flights
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