Best Time to Fly ROC to BWI: On-Time Stats by Hour & Airline
Frederick Douglass Grtr Rochester International → Baltimore/Washington International Thurgood Marshall
Data through July 2026 · Last updated October 18, 2026
1,105 flights were scheduled from Rochester (ROC) to Baltimore (BWI) in the last 12 months, and 82.6% of those that flew arrived on time, 5.0 points above the US average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
September has been the best month (92% on time) and Thursday the weakest day of the week (81%).
1.2% of flights were cancelled, versus 1.8% nationally.
ROC to BWI 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 | 82.6% | 64 min | 1.2% | 1,105 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ROC to BWI
On-time arrival % by scheduled departure hour (local time), 2,217 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 92.4% | 1.4% | 214 |
| 6am–7am | 93.8% | 0.8% | 517 |
| 7am–8am | Limited data | 4 | |
| 8am–9am | Limited data | 5 | |
| 9am–10am | Limited data | 9 | |
| 10am–11am | Limited data | 21 | |
| 11am–12pm | 84.8% | 0.0% | 105 |
| 12pm–1pm | 77.3% | 0.6% | 492 |
| 1pm–2pm | 81.1% | 1.8% | 113 |
| 2pm–3pm | Limited data | 4 | |
| 3pm–4pm | 86.4% | 1.3% | 157 |
| 4pm–5pm | 75.4% | 1.6% | 248 |
| 5pm–6pm | 71.1% | 1.3% | 237 |
| 6pm–7pm | 69.7% | 2.2% | 91 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on ROC to BWI
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) | 92.7% | +8.0 pts | 0.0% | 41 |
| Christmas & New Year (Dec 20 - Jan 3) | 64.8% | -19.9 pts | 2.1% | 93 |
| Summer peak (Jun 15 - Aug 15) | 77.6% | -7.1 pts | 1.6% | 372 |
| All other days | 84.7% | — | 0.9% | 1,711 |
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).