Grand Rapids (GRR) to Sanford (SFB): On-Time Performance
Data through July 2026
The calendar drives reliability on GRR–SFB. October 2024 flights landed on schedule 92% of the time, but July 2025 dropped to 37% — a gap of 55 points. Across the full period the route averages 73% on-time against a national 78%. Morning departures also hold up better than evening ones (84% vs 50%), which matters most in the rough months.
- On-time
- 73%
- arrived <15 min late
- Avg delay
- 22 min
- completed flights
- Cancelled
- 0.7%
- Flights/day
- 1.1
- last 12 months
- Duration
- 2h 38m
- scheduled
- Distance
- 1,001 mi
Monthly on-time trend
Best time to fly from GRR to SFB
Aim for departures around 8 a.m. (88% on-time); avoid 9 p.m. departures (23%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 71% | 31 min |
| Tuesday | 74% | 15 min |
| Wednesdaybest | 79% | 11 min |
| Thursday | 72% | 28 min |
| Friday | 73% | 16 min |
| Saturday | 75% | 18 min |
| Sunday | 67% | 28 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft40%
- Airline operations34%
- National airspace system17%
- Weather8%
Frequently asked questions
- How often are flights from GRR to SFB delayed?
- 28% of GRR–SFB 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 GRR to SFB?
- Departures around 8 a.m. have the best record (88% on-time), while departures around 9 p.m. have the worst (23%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from GRR to SFB?
- The scheduled GRR–SFB flight time averages 2h 38m over 1,001 miles. Actual arrival times vary — flights on this route land 15+ minutes late 28% of the time.
- How often are GRR to SFB flights cancelled?
- 0.7% 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 GRR to SFB?
- July 2025 was the roughest month in this dataset, with only 37% of arrivals on time. The best was October 2024 at 92%. If your dates are flexible, that 55-point gap is worth planning around.
Explore related pages
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Related guides
Based on 836 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.