Best Time to Fly SJC to ORD: On-Time Stats by Hour & Airline
Norman Y. Mineta San Jose International → Chicago O'Hare International
Data through July 2026 · Last updated October 18, 2026
301 flights were scheduled from San Jose (SJC) to Chicago (ORD) in the last 12 months, and 91.2% of those that flew arrived on time, 13.5 points above the US average of 77.6%.
United Airlines was the only reporting airline with regular flights on this route.
February has been the best month (98% on time) and Tuesday the weakest day of the week (90%).
1.7% of flights were cancelled, versus 1.8% nationally.
SJC to ORD 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 |
|---|---|---|---|---|
| United Airlines | 90.9% | 43 min | 1.7% | 293 |
| American Airlines | Limited data | 8 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SJC to ORD
On-time arrival % by scheduled departure hour (local time), 666 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 92.4% | 1.2% | 576 |
| 8am–9am | Limited data | 12 | |
| 9am–10am | Limited data | 4 | |
| 10am–11am | Limited data | 5 | |
| 11am–12pm | Limited data | 1 | |
| 12pm–1pm | Limited data | 1 | |
| 2pm–3pm | Limited data | 3 | |
| 4pm–5pm | Limited data | 1 | |
| 5pm–6pm | Limited data | 2 | |
| 7pm–8pm | Limited data | 1 | |
| 10pm–11pm | 93.1% | 0.0% | 58 |
| 11pm–12am | Limited data | 2 | |
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 ORD
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) | Limited data | 14 | ||
| Christmas & New Year (Dec 20 - Jan 3) | Limited data | 22 | ||
| Summer peak (Jun 15 - Aug 15) | 93.2% | +1.7 pts | 3.2% | 124 |
| All other days | 91.5% | — | 0.4% | 506 |
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).