BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
ORD→EYW

Chicago, IL (ORD) to Key West, FL (EYW) flight delay odds

79.1% of 717 official scheduled ORD-to-EYW flights arrived on time; 14.1% arrived at least 30 minutes late and 1.3% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALGenerally reliable
79.1%arrived on time
14.1%30+ min late
1.3%cancelled
717scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late7.0%all scheduled flights
120+ minutes late2.4%all scheduled flights
Diverted0.6%did not reach as scheduled
Average arrival+0.1 mincompleted flights

Which departure time was most reliable for ORD to EYW?

Among qualifying ORD-to-EYW departure window results, Early morning had the highest on-time rate: 83.0% of 229 flights. Late morning was lowest at 76.6% across 329 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning22983.0%11.8%0.9%
Late morning32976.6%15.2%0.9%
Afternoon12679.4%14.3%2.4%

Which weekday was most reliable for ORD to EYW?

Among qualifying ORD-to-EYW weekday results, Tuesday had the highest on-time rate: 87.6% of 97 flights. Sunday was lowest at 73.8% across 103 flights.

DayFlightsOn time30+ minCancelled
Monday9876.5%15.3%3.1%
Tuesday9787.6%10.3%0.0%
Wednesday9881.6%11.2%0.0%
Thursday10178.2%14.9%0.0%
Friday10379.6%15.5%0.0%
Saturday11776.9%14.5%1.7%
Sunday10373.8%16.5%3.9%

Which airline was most reliable for ORD to EYW?

Among qualifying ORD-to-EYW airline results, Envoy Air had the highest on-time rate: 80.8% of 407 flights. United Airlines was lowest at 76.1% across 138 flights.

AirlineFlightsOn time30+ minCancelled
Envoy Air40780.8%12.8%1.2%
Republic Airways17277.3%14.5%1.7%
United Airlines13876.1%17.4%0.7%

Which month was most reliable for ORD to EYW?

Among qualifying ORD-to-EYW month results, May 2026 had the highest on-time rate: 91.6% of 83 flights. December 2025 was lowest at 65.2% across 89 flights.

MonthFlightsOn time30+ minCancelled
November 20256971.0%18.8%4.3%
December 20258965.2%27.0%1.1%
January 202610083.0%14.0%0.0%
February 20269884.7%9.2%0.0%
March 202611376.1%14.2%3.5%
April 20269480.9%17.0%0.0%
May 20268391.6%6.0%1.2%
June 20266078.3%5.0%0.0%

What drove ORD to EYW delay minutes?

Late aircraft was the largest recorded ORD-to-EYW delay category, accounting for 37.8% of 8,700 BTS-attributed delay minutes during July 2025–June 2026.

Airline16.8%
Late aircraft37.8%
National airspace36.1%
Weather9.4%
Security0.0%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.