Route Reliability
Chicago → Key West
ORD–EYW · 1,251 miles · Chicago O'Hare International Airport to Key West International Airport
- 81%
- Arrive within 15 minutes
- 1 min
- Average arrival delay
- 1.4%
- Cancelled
- 665
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.American Airlines83%386 flights
- 2.United Airlines78%279 flights
What the data says
Mornings have a slight edge.
Departures between 6–9 AM arrived on time 83% of the time, against 78% between 9 AM–12 PM.
Sunday scaries are real for this one.
ORD–EYW flights arrived on time 88% of the time on Tuesdays. On Sundays: 77%.
American Airlines has a slight edge here.
American Airlines arrived on time 83% of the time on this route; United Airlines managed 78%.
Ticking up lately.
ORD–EYW flights arrived on time 85% of the time over the last three months in the data, compared with 78% in the three months before that.
Best historical flights
Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.
Top flights by on-time rate
More flights on this route
The breakdown
- Mon79%(86 flights)
- Tue88%(88 flights)
- Wed81%(91 flights)
- Thu82%(92 flights)
- Fri79%(95 flights)
- Sat80%(110 flights)
- Sun77%(92 flights)
- 6–9 AM83%(235 flights)
- 9 AM–12 PM78%(265 flights)
- 12–3 PM82%(123 flights)
- 3–6 PM81%(31 flights)
Nov 76% → May 93% on time
| Month | On-time percentage | Flights |
|---|---|---|
| November 2025 | 76% | 66 |
| December 2025 | 66% | 88 |
| January 2026 | 83% | 100 |
| February 2026 | 87% | 96 |
| March 2026 | 79% | 109 |
| April 2026 | 82% | 94 |
| May 2026 | 93% | 82 |
Keep nerding
Based on 665 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.