Historical on-time performance
Atlanta to Key West
646 miData through May 2026Source: US DOT · BTS
Flights on ATL–EYW arrive on time 79% of the time over the last 12 months.
On-time rate79%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled1.0%of scheduled flights
based on 1,456 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Delta Air LinesOn-time79%Medianon timep9040 minCancel1.0%Flights1,456
Why flights run late
Delay causes
- Airline48%
- Weather18%
- Air traffic (NAS)20%
- Late aircraft14%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline53%
- Weather47%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Airline. 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 ATL → EYW
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 — 84% on time.
- Mornings84% on time · p90 25 min · 1,098 flights
- Middays79% on time · p90 35 min · 1,117 flights
- Afternoons78% on time · p90 35 min · 1,083 flights
- Evenings78% on time · p90 45 min · 1,090 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 75% to 83% on time.
- Tuesdays83% on time · p90 25 min · 624 flights
- Wednesdays83% on time · p90 25 min · 619 flights
- Thursdays82% on time · p90 40 min · 623 flights
- Saturdays79% on time · p90 40 min · 640 flights
- Fridays79% on time · p90 30 min · 625 flights
- Mondays79% on time · p90 40 min · 626 flights
- Sundays75% on time · p90 45 min · 631 flights
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