Historical on-time performance
Chicago to Key West
Flights on ORD–EYW arrive on time 79% of the time over the last 12 months.
based on 531 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Not enough comparable data to name a most-on-time carrier — low-data carriers aren't ranked.
- Envoy AirOn-time81%Medianon timep9040 minCancel1.3%Flights372
- United AirlinesOn-time77%Medianon timep9055 minCancel1.5%Flights66
- Republic AirwaysOn-time73%Medianon timep9045 minCancel2.2%Flights93
Why flights run late
Delay causes
- Airline16%
- Weather12%
- Air traffic (NAS)36%
- Late aircraft36%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline13%
- Weather75%
- Air traffic (NAS)13%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 8 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 ORD → EYW
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 77% to 77% on time.
- Middays77% on time · p90 55 min · 783 flights
- Mornings77% on time · p90 35 min · 570 flights
Best day of week
Tuesdays are the most reliable day to fly this route — 87% on time.
- Tuesdays87% on time · p90 30 min · 195 flights · limited
- Wednesdays79% on time · p90 35 min · 198 flights · limited
- Fridays76% on time · p90 50 min · 201 flights
- Mondays75% on time · p90 40 min · 194 flights · limited
- Thursdays75% on time · p90 50 min · 198 flights · limited
- Saturdays74% on time · p90 45 min · 223 flights
- Sundays74% on time · p90 55 min · 201 flights
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