Historical on-time performance
Grand Rapids to Chicago
Flights on GRR–ORD arrive on time 66% of the time over the last 12 months.
based on 4,007 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- American AirlinesOn-time72%Medianon timep9065 minCancel3.3%Flights456
- Republic AirwaysOn-time70%Medianon timep9060 minCancel2.4%Flights673
- Envoy AirOn-time67%Medianon timep9060 minCancel3.4%Flights953
- United AirlinesOn-time65%Median5 minp9065 minCancel1.3%Flights1,033
- SkyWest AirlinesOn-time60%Medianon timep90115 minCancel3.3%Flights892
Why flights run late
Delay causes
- Airline30%
- Weather11%
- Air traffic (NAS)30%
- Late aircraft29%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
When flights don't go
Why flights were cancelled
- Airline6%
- Weather65%
- Air traffic (NAS)30%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 105 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 GRR → ORD
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 58% to 80% on time.
- Mornings80% on time · p90 35 min · 3,623 flights
- Middays78% on time · p90 50 min · 2,644 flights
- Afternoons67% on time · p90 80 min · 1,217 flights
- Evenings58% on time · p90 70 min · 1,844 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 70% to 77% on time.
- Saturdays77% on time · p90 40 min · 1,269 flights
- Tuesdays76% on time · p90 50 min · 1,325 flights
- Wednesdays75% on time · p90 40 min · 1,324 flights
- Thursdays73% on time · p90 50 min · 1,379 flights
- Mondays71% on time · p90 65 min · 1,379 flights
- Sundays71% on time · p90 65 min · 1,340 flights
- Fridays70% on time · p90 60 min · 1,387 flights
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