Historical on-time performance
Chicago to Grand Rapids
137 miData through Dec 2025Source: US DOT · BTS
Flights on MDW–GRR arrive on time 77% of the time over the last 12 months.
On-time rate77%arrived within 15 min
p90 delay45 min1 in 10 flights is worse (tail risk)
Cancelled0.5%of scheduled flights
based on 866 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time77%Medianon timep9045 minCancel0.5%Flights866
Why flights run late
Delay causes
- Airline28%
- Weather2%
- Air traffic (NAS)8%
- Late aircraft60%
- Security1%
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 MDW → GRR
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 63% to 87% on time.
- Mornings87% on time · p90 15 min · 650 flights
- Middays85% on time · p90 20 min · 606 flights
- Afternoons76% on time · p90 35 min · 452 flights
- Evenings70% on time · p90 40 min · 249 flights
- Overnights63% on time · p90 70 min · 917 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 69% to 83% on time.
- Saturdays83% on time · p90 30 min · 316 flights
- Tuesdays80% on time · p90 35 min · 427 flights
- Wednesdays79% on time · p90 25 min · 427 flights
- Fridays75% on time · p90 50 min · 424 flights
- Mondays73% on time · p90 50 min · 427 flights
- Thursdays72% on time · p90 40 min · 425 flights
- Sundays69% on time · p90 50 min · 428 flights
Advertisement
Keep exploring