Sanford (SFB) to Grand Rapids (GRR): On-Time Performance
Data through July 2026
When you fly SFB to GRR matters as much as anything else about the booking: the route swung from 93% on-time in May 2026 to just 49% in July 2025. Across the full period the route averages 72% on-time against a national 78%. Morning departures also hold up better than evening ones (87% vs 62%), which matters most in the rough months.
- On-time
- 72%
- arrived <15 min late
- Avg delay
- 22 min
- completed flights
- Cancelled
- 0.6%
- Flights/day
- 1.1
- last 12 months
- Duration
- 2h 40m
- scheduled
- Distance
- 1,001 mi
Monthly on-time trend
Best time to fly from SFB to GRR
Aim for departures around 10 a.m. (91% on-time); avoid 5 p.m. departures (35%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 68% | 24 min |
| Tuesdaybest | 82% | 10 min |
| Wednesday | 78% | 18 min |
| Thursday | 71% | 18 min |
| Friday | 69% | 18 min |
| Saturday | 73% | 17 min |
| Sunday | 69% | 43 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft36%
- Airline operations35%
- National airspace system12%
- Weather15%
- Security2%
Frequently asked questions
- How often are flights from SFB to GRR delayed?
- 28% of SFB–GRR flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 22 minutes.
- What is the best time of day to fly from SFB to GRR?
- Departures around 10 a.m. have the best record (91% on-time), while departures around 5 p.m. have the worst (35%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from SFB to GRR?
- The scheduled SFB–GRR flight time averages 2h 40m over 1,001 miles. Actual arrival times vary — flights on this route land 15+ minutes late 28% of the time.
- How often are SFB to GRR flights cancelled?
- 0.6% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from SFB to GRR?
- July 2025 was the roughest month in this dataset, with only 49% of arrivals on time. The best was May 2026 at 93%. If your dates are flexible, that 44-point gap is worth planning around.
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Based on 836 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.