Best Time to Fly SJC to BWI: On-Time Stats by Hour & Airline
Norman Y. Mineta San Jose International → Baltimore/Washington International Thurgood Marshall
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 80.9% of San Jose (SJC) to Baltimore (BWI) flights arrived on time (242 scheduled flights). That is 3.3 points above the national average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Wednesday was the most reliable day (89% on time) and September the worst month (72%).
The cancellation rate was 0.4% (US average 1.8%).
SJC 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 | 80.9% | 30 min | 0.4% | 242 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SJC to BWI
On-time arrival % by scheduled departure hour (local time), 332 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 9am–10am | Limited data | 15 | |
| 10am–11am | Limited data | 1 | |
| 11am–12pm | Limited data | 11 | |
| 12pm–1pm | Limited data | 6 | |
| 8pm–9pm | 89.9% | 0.7% | 150 |
| 9pm–10pm | 75.2% | 0.0% | 149 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SJC to BWI
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Summer peak (Jun 15 - Aug 15) | 80.9% | -0.1 pts | 1.7% | 117 |
| All other days | 80.9% | — | 0.0% | 215 |
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).