OnTimeStats

Historical on-time performance

Detroit to Grand Rapids

120 miData through May 2026Source: US DOT · BTS

Flights on DTW–GRR arrive on time 71% of the time over the last 12 months.

On-time rate71%arrived within 15 min
p90 delay95 min1 in 10 flights is worse (tail risk)
Cancelled1.1%of scheduled flights

based on 1,513 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • SkyWest Airlines
    On-time71%
    Medianon time
    p9095 min
    Cancel1.1%
    Flights1,513

Why flights run late

Delay causes

  • Airline70%
  • Weather20%
  • Air traffic (NAS)11%
  • Late aircraft0%
  • Security0%

Most delay minutes here are attributed to Airline.

When flights don't go

Why flights were cancelled

  • Airline6%
  • Weather63%
  • Air traffic (NAS)31%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 16 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 DTW → 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 68% to 83% on time.

  • Mornings83% on time · p90 30 min · 867 flights
  • Middays81% on time · p90 45 min · 942 flights
  • Afternoons76% on time · p90 60 min · 1,191 flights
  • Overnights68% on time · p90 70 min · 976 flights
  • Evenings68% on time · p90 105 min · 499 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 72% to 80% on time.

  • Saturdays80% on time · p90 35 min · 608 flights
  • Wednesdays77% on time · p90 50 min · 636 flights
  • Thursdays77% on time · p90 60 min · 648 flights
  • Tuesdays76% on time · p90 50 min · 634 flights
  • Sundays74% on time · p90 80 min · 654 flights
  • Mondays74% on time · p90 70 min · 649 flights
  • Fridays72% on time · p90 65 min · 646 flights

Keep exploring

Related pages

Methodology

A flight is on time when it arrives within 15 minutes of schedule — the US DOT / BTS standard. Median and p90(the “1-in-10 bad day”) are read from the full arrival-delay distribution, never averaged across periods.

Figures cover a carrier’s own BTS-coded flights. Cells below ~200 flights are flagged as limited data. All numbers are pre-computed from public BTS On-Time Performance data.