Chicago (ORD) to Key West (EYW): On-Time Performance
Data through July 2026
Chicago (ORD) to Key West (EYW) effectively runs on two schedules. In May 2026, 93% of arrivals were on time; in December 2025 that fell to 66% — a 27-point seasonal swing. Across the full period the route averages 79% on-time against a national 78%.
- On-time
- 79%
- arrived <15 min late
- Avg delay
- 13 min
- completed flights
- Cancelled
- 1.2%
- Flights/day
- 2.1
- last 12 months
- Duration
- 3h 22m
- scheduled
- Distance
- 1,251 mi
Best airline from ORD to EYW
3 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Envoy Airmost reliable | 80% | 11 min | 1.4% | 648 |
| Republic Airways | 80% | 11 min | 1.7% | 229 |
| United Airlines | 78% | 17 min | 0.3% | 340 |
Monthly on-time trend
Best time to fly from ORD to EYW
Aim for departures around 7 a.m. (87% on-time); avoid 11 a.m. departures (70%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 78% | 13 min |
| Tuesdaybest | 88% | 11 min |
| Wednesday | 84% | 10 min |
| Thursday | 77% | 13 min |
| Friday | 78% | 14 min |
| Saturday | 77% | 13 min |
| Sunday | 76% | 16 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft33%
- Airline operations19%
- National airspace system42%
- Weather7%
Frequently asked questions
- How often are flights from ORD to EYW delayed?
- 21% of ORD–EYW flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 13 minutes.
- Which airline is most reliable from ORD to EYW?
- Envoy Air has the best on-time record on this route at 80%, based on 648 flights. 3 airlines flew ORD–EYW frequently enough to compare in this period.
- What is the best time of day to fly from ORD to EYW?
- Departures around 7 a.m. have the best record (87% on-time), while departures around 11 a.m. have the worst (70%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from ORD to EYW?
- The scheduled ORD–EYW flight time averages 3h 22m over 1,251 miles. Actual arrival times vary — flights on this route land 15+ minutes late 21% of the time.
- How often are ORD to EYW flights cancelled?
- 1.2% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from ORD to EYW?
- December 2025 was the roughest month in this dataset, with only 66% of arrivals on time. The best was May 2026 at 93%. If your dates are flexible, that 27-point gap is worth planning around.
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Based on 1,217 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.