Historical on-time performance
Fort Lauderdale to Chicago
1,182 miData through May 2026Source: US DOT · BTS
Flights on FLL–ORD arrive on time 68% of the time over the last 12 months.
On-time rate68%arrived within 15 min
p90 delay70 min1 in 10 flights is worse (tail risk)
Cancelled1.6%of scheduled flights
based on 3,258 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesbestOn-time74%Medianon timep9050 minCancel0.7%Flights1,448
- American AirlinesOn-time68%Medianon timep9070 minCancel1.6%Flights827
- Spirit AirlinesOn-time60%Medianon timep9085 minCancel3.1%Flights983
Why flights run late
Delay causes
- Airline25%
- Weather6%
- Air traffic (NAS)35%
- Late aircraft33%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
When flights don't go
Why flights were cancelled
- Airline15%
- Weather68%
- Air traffic (NAS)17%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 53 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 FLL → ORD
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 83% on time.
- Mornings83% on time · p90 20 min · 2,380 flights
- Middays79% on time · p90 45 min · 2,225 flights
- Evenings63% on time · p90 85 min · 1,061 flights
- Afternoons57% on time · p90 95 min · 2,642 flights
- Overnights56% on time · p90 120 min · 949 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 63% to 75% on time.
- Tuesdays75% on time · p90 60 min · 1,199 flights
- Wednesdays72% on time · p90 50 min · 1,188 flights
- Thursdays70% on time · p90 55 min · 1,373 flights
- Saturdays70% on time · p90 65 min · 1,356 flights
- Mondays70% on time · p90 75 min · 1,365 flights
- Fridays67% on time · p90 75 min · 1,374 flights
- Sundays63% on time · p90 85 min · 1,402 flights
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