Route
EYW → ORD
Key West International Airport Chicago O'Hare International Airport
How punctual is this route?
- On-time arrivals
- 68.7%
- Less than 15 minutes late
- Cancelled
- 1.5%
- Of scheduled flights
- Average delay when late
- 95 min
- Flights arriving 15+ minutes late
- Flights tracked
- 815
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 39%
- Airline (crew, maintenance, cleaning) 28%
- Air traffic control & airport 25%
- Extreme weather 8%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| October 2025 | 80.0% | 6 |
| November 2025 | 70.8% | 69 |
| December 2025 | 59.1% | 89 |
| January 2026 | 64.3% | 100 |
| February 2026 | 56.8% | 97 |
| March 2026 | 75.2% | 114 |
| April 2026 | 64.1% | 94 |
| May 2026 | 85.0% | 83 |
| June 2026 | 65.5% | 60 |
| July 2026 | 79.7% | 62 |
| August 2026 | 73.2% | 41 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| Envoy Air | 464 | 67.8% | 1.3% | 90 min |
| Republic Airways | 213 | 80.4% | 1.9% | 88 min |
| United Airlines | 138 | 54.5% | 1.4% | 109 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
UA2304
46% late · 133 flights
-
MQ3657
34% late · 125 flights
-
MQ3829
33% late · 90 flights
-
YX3499
16% late · 82 flights
-
MQ3996
33% late · 76 flights
-
YX3570
41% late · 52 flights
-
MQ3582
21% late · 44 flights
-
MQ3960
36% late · 44 flights
-
MQ3596
26% late · 30 flights
-
MQ3954
26% late · 27 flights
-
YX3532
6% late · 21 flights
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