Grand Rapids (GRR) to Sanford (SFB): On-Time Performance
Data through May 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 53%), which matters most in the rough months.
- On-time
- 73%
- arrived <15 min late
- Avg delay
- 22 min
- completed flights
- Cancelled
- 0.5%
- Flights/day
- 1.1
- last 12 months
- Duration
- 2h 37m
- scheduled
- Distance
- 1,001 mi
Monthly on-time trend
Best time to fly from GRR to SFB
Aim for departures around 8 a.m. (87% on-time); avoid 9 p.m. departures (23%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 70% | 31 min |
| Tuesday | 77% | 13 min |
| Wednesdaybest | 79% | 11 min |
| Thursday | 70% | 24 min |
| Friday | 73% | 17 min |
| Saturday | 75% | 20 min |
| Sunday | 67% | 30 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft39%
- Airline operations34%
- National airspace system18%
- Weather9%
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 2024-06 and 2026-05. 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 (87% 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 37m 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?
- 0.5% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, 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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Based on 809 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.