Historical on-time performance
Memphis to Chicago
480 miData through Dec 2025Source: US DOT · BTS
Flights on MEM–MDW arrive on time 85% of the time over the last 12 months.
On-time rate85%arrived within 15 min
p90 delay20 min1 in 10 flights is worse (tail risk)
Cancelled1.1%of scheduled flights
based on 648 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time85%Medianon timep9020 minCancel1.1%Flights648
Why flights run late
Delay causes
- Airline32%
- Weather0%
- Air traffic (NAS)32%
- Late aircraft36%
- 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 MEM → MDW
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 73% to 88% on time.
- Mornings88% on time · p90 15 min · 1,010 flights
- Middays84% on time · p90 20 min · 99 flights · limited
- Afternoons74% on time · p90 40 min · 622 flights
- Evenings73% on time · p90 50 min · 258 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 79% to 87% on time.
- Saturdays87% on time · p90 15 min · 178 flights · limited
- Tuesdays83% on time · p90 30 min · 297 flights
- Wednesdays82% on time · p90 25 min · 295 flights
- Mondays81% on time · p90 25 min · 311 flights
- Fridays80% on time · p90 30 min · 309 flights
- Sundays79% on time · p90 30 min · 297 flights
- Thursdays79% on time · p90 35 min · 305 flights
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