Dallas (DAL) to San Jose (SJC): On-Time Performance
Data through May 2026
The calendar drives reliability on DAL–SJC. October 2024 flights landed on schedule 93% of the time, but May 2026 dropped to 41% — a gap of 51 points. Across the full period the route averages 75% on-time against a national 78%. Morning departures also hold up better than evening ones (90% vs 65%), which matters most in the rough months.
- On-time
- 75%
- arrived <15 min late
- Avg delay
- 14 min
- completed flights
- Cancelled
- 1.4%
- Flights/day
- 1.3
- last 12 months
- Duration
- 3h 44m
- scheduled
- Distance
- 1,450 mi
Monthly on-time trend
Best time to fly from DAL to SJC
Aim for departures around 6 a.m. (97% on-time); avoid 9 p.m. departures (60%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 68% | 19 min |
| Tuesday | 79% | 12 min |
| Wednesday | 74% | 14 min |
| Thursday | 82% | 13 min |
| Fridaybest | 84% | 8 min |
| Saturday | 68% | 14 min |
| Sunday | 68% | 20 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft63%
- Airline operations29%
- National airspace system6%
- Weather2%
Frequently asked questions
- How often are flights from DAL to SJC delayed?
- 25% of DAL–SJC 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 14 minutes.
- What is the best time of day to fly from DAL to SJC?
- Departures around 6 a.m. have the best record (97% on-time), while departures around 9 p.m. have the worst (60%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from DAL to SJC?
- The scheduled DAL–SJC flight time averages 3h 44m over 1,450 miles. Actual arrival times vary — flights on this route land 15+ minutes late 25% of the time.
- How often are DAL to SJC flights cancelled?
- 1.4% 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 DAL to SJC?
- May 2026 was the roughest month in this dataset, with only 41% of arrivals on time. The best was October 2024 at 93%. If your dates are flexible, that 51-point gap is worth planning around.
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Based on 1,077 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.