Historical on-time performance
Chicago to Grand Rapids
Flights on MDW–GRR arrive on time 75% of the time over the last 12 months.
based on 928 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time75%Medianon timep9045 minCancel0.8%Flights928
Why flights run late
Delay causes
- Airline32%
- Weather4%
- Air traffic (NAS)12%
- Late aircraft52%
- Security1%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline0%
- Weather100%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 7 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 MDW → GRR
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 64% to 87% on time.
- Middays87% on time · p90 20 min · 635 flights
- Mornings87% on time · p90 15 min · 572 flights
- Afternoons77% on time · p90 35 min · 459 flights
- Evenings70% on time · p90 45 min · 245 flights
- Overnights64% on time · p90 70 min · 921 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 71% to 82% on time.
- Saturdays82% on time · p90 35 min · 318 flights
- Wednesdays82% on time · p90 25 min · 415 flights
- Tuesdays81% on time · p90 35 min · 415 flights
- Fridays74% on time · p90 50 min · 418 flights
- Thursdays73% on time · p90 45 min · 419 flights
- Mondays73% on time · p90 50 min · 415 flights
- Sundays71% on time · p90 45 min · 432 flights
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