Historical on-time performance
Atlanta to Key West
646 miData through Dec 2025Source: US DOT · BTS
Flights on ATL–EYW arrive on time 77% of the time over the last 12 months.
On-time rate77%arrived within 15 min
p90 delay45 min1 in 10 flights is worse (tail risk)
Cancelled0.8%of scheduled flights
based on 1,449 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Delta Air LinesOn-time77%Medianon timep9045 minCancel0.8%Flights1,449
Why flights run late
Delay causes
- Airline44%
- Weather17%
- Air traffic (NAS)23%
- Late aircraft16%
- Security0%
Most delay minutes here are attributed to Airline.
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 (2023-01 .. 2025-12).
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 · 1,097 flights
- Middays79% on time · p90 35 min · 1,156 flights
- Evenings78% on time · p90 45 min · 1,078 flights
- Afternoons78% on time · p90 35 min · 1,084 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 75% to 84% on time.
- Tuesdays84% on time · p90 25 min · 628 flights
- Wednesdays81% on time · p90 30 min · 628 flights
- Thursdays81% on time · p90 40 min · 626 flights
- Saturdays80% on time · p90 35 min · 640 flights
- Mondays80% on time · p90 40 min · 630 flights
- Fridays79% on time · p90 30 min · 627 flights
- Sundays75% on time · p90 50 min · 636 flights
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