Historical on-time performance
New York to Chicago
725 miData through Dec 2025Source: US DOT · BTS
Flights on LGA–MDW arrive on time 72% of the time over the last 12 months.
On-time rate72%arrived within 15 min
p90 delay55 min1 in 10 flights is worse (tail risk)
Cancelled2.8%of scheduled flights
based on 2,354 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time72%Medianon timep9055 minCancel2.8%Flights2,354
Why flights run late
Delay causes
- Airline19%
- Weather6%
- Air traffic (NAS)25%
- Late aircraft51%
- 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 LGA → 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 · 1,993 flights
- Middays80% on time · p90 25 min · 1,122 flights
- Afternoons71% on time · p90 50 min · 1,887 flights
- Evenings65% on time · p90 75 min · 1,401 flights
- Overnights62% on time · p90 70 min · 974 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 73% to 79% on time.
- Saturdays79% on time · p90 35 min · 609 flights
- Tuesdays76% on time · p90 40 min · 1,177 flights
- Wednesdays76% on time · p90 40 min · 1,178 flights
- Thursdays74% on time · p90 40 min · 1,146 flights
- Mondays74% on time · p90 55 min · 1,159 flights
- Fridays73% on time · p90 55 min · 1,152 flights
- Sundays73% on time · p90 55 min · 956 flights
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