Best Time to Fly BWI to ROC: On-Time Stats by Hour & Airline
Baltimore/Washington International Thurgood Marshall → Frederick Douglass Grtr Rochester International
Data through July 2026 · Last updated October 18, 2026
1,105 flights were scheduled from Baltimore (BWI) to Rochester (ROC) in the last 12 months, and 75.6% of those that flew arrived on time, 2.0 points below the US average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Tuesday was the most reliable day (79% on time) and June the worst month (64%).
The cancellation rate was 1.4% (US average 1.8%).
BWI to ROC on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Southwest Airlines | 75.6% | 48 min | 1.4% | 1,105 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly BWI to ROC
On-time arrival % by scheduled departure hour (local time), 2,216 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 12am–1am | Limited data | 1 | |
| 9am–10am | 80.5% | 0.0% | 41 |
| 10am–11am | 85.5% | 0.8% | 473 |
| 11am–12pm | 83.7% | 0.5% | 216 |
| 12pm–1pm | Limited data | 2 | |
| 1pm–2pm | 79.3% | 0.0% | 92 |
| 2pm–3pm | 86.8% | 0.0% | 190 |
| 3pm–4pm | 74.0% | 0.9% | 211 |
| 4pm–5pm | 80.4% | 1.5% | 203 |
| 5pm–6pm | 55.3% | 2.1% | 48 |
| 6pm–7pm | Limited data | 9 | |
| 7pm–8pm | Limited data | 3 | |
| 8pm–9pm | 70.2% | 0.0% | 159 |
| 9pm–10pm | 69.8% | 2.5% | 279 |
| 10pm–11pm | 51.2% | 3.5% | 289 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on BWI to ROC
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 80.5% | +2.4 pts | 0.0% | 41 |
| Christmas & New Year (Dec 20 - Jan 3) | 63.7% | -14.3 pts | 2.1% | 93 |
| Summer peak (Jun 15 - Aug 15) | 65.2% | -12.9 pts | 3.2% | 372 |
| All other days | 78.1% | — | 0.9% | 1,710 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).