Historical on-time performance
Fort Lauderdale to Chicago
1,166 miData through Dec 2025Source: US DOT · BTS
Flights on FLL–MDW arrive on time 76% of the time over the last 12 months.
On-time rate76%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled1.1%of scheduled flights
based on 1,138 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time76%Medianon timep9050 minCancel1.1%Flights1,138
Why flights run late
Delay causes
- Airline31%
- Weather4%
- Air traffic (NAS)13%
- Late aircraft52%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly FLL → MDW
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 88% on time.
- Mornings88% on time · p90 15 min · 1,224 flights
- Middays76% on time · p90 35 min · 908 flights
- Afternoons66% on time · p90 65 min · 411 flights
- Evenings59% on time · p90 65 min · 888 flights
- Overnights59% on time · p90 80 min · 241 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 68% to 80% on time.
- Wednesdays80% on time · p90 35 min · 481 flights
- Tuesdays79% on time · p90 40 min · 480 flights
- Thursdays75% on time · p90 40 min · 497 flights
- Saturdays73% on time · p90 45 min · 648 flights
- Fridays72% on time · p90 45 min · 500 flights
- Mondays70% on time · p90 50 min · 504 flights
- Sundays68% on time · p90 70 min · 562 flights
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