Grand Rapids (GRR) to Baltimore (BWI): On-Time Performance
Data through May 2026
Grand Rapids (GRR) to Baltimore (BWI) effectively runs on two schedules. In April 2025, 97% of arrivals were on time; in May 2025 that fell to 65% — a 32-point seasonal swing. Across the full period the route averages 79% on-time against a national 78%.
- On-time
- 79%
- arrived <15 min late
- Avg delay
- 12 min
- completed flights
- Cancelled
- 0.6%
- Flights/day
- 1.2
- last 12 months
- Duration
- 1h 38m
- scheduled
- Distance
- 528 mi
Monthly on-time trend
Best time to fly from GRR to BWI
Aim for departures around 5 a.m. (93% on-time); avoid 4 p.m. departures (67%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 77% | 12 min |
| Tuesday | 81% | 13 min |
| Wednesday | 79% | 11 min |
| Thursday | 76% | 14 min |
| Friday | 71% | 14 min |
| Saturdaybest | 93% | 5 min |
| Sunday | 79% | 15 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft56%
- Airline operations20%
- National airspace system23%
- Weather1%
Frequently asked questions
- How often are flights from GRR to BWI delayed?
- 21% of GRR–BWI 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 12 minutes.
- What is the best time of day to fly from GRR to BWI?
- Departures around 5 a.m. have the best record (93% on-time), while departures around 4 p.m. have the worst (67%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from GRR to BWI?
- The scheduled GRR–BWI flight time averages 1h 38m over 528 miles. Actual arrival times vary — flights on this route land 15+ minutes late 21% of the time.
- How often are GRR to BWI flights cancelled?
- 0.6% 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 BWI?
- May 2025 was the roughest month in this dataset, with only 65% of arrivals on time. The best was April 2025 at 97%. If your dates are flexible, that 32-point gap is worth planning around.
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Based on 788 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.