DAL to SJC flight delays
Dallas, TX (DAL) San Jose, CA (SJC) · 1,450 miles
458 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
66.96%
Arrived on time
Within 15 minutes of schedule
1.97%
Cancelled
Share of scheduled flights
49 min
When late, late by
Average across delayed arrivals
18 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The season swings this route hard. In September it ran 68.1 points more punctual than in June — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
The route has been getting worse. The later months run 24 points less punctual than the earlier ones. A drift of that size is rarely weather; it is more often an airline adding frequencies faster than the airports can absorb them.
The two directions do not behave alike. SJC to DAL arrives on time 17.7 points more often than the outbound. Delay accumulates through the flying day, so whichever direction is scheduled later tends to carry the worse record — which is an argument for booking the morning departure if the choice exists.
This is a late route. Flights from Dallas to San Jose miss their scheduled arrival often enough that a tight connection at the far end is a connection at risk.
Which airline should you fly on this route?
Over January 2025 – August 2026, Southwest Airlines arrived on time most often on DAL to SJC. Flights ran closest to schedule in September and worst in June.
Every airline on DAL to SJC
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| Southwest Airlines | 458 | 66.96% | 1.97% | 49 min | F |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
SJC to DAL San Jose back to Dallas 84.7% on time BOther routes from Dallas
Common questions
Are flights from Dallas to San Jose usually delayed?
66.96% of flights on the DAL to SJC route arrived within 15 minutes of schedule, so roughly 3 in every ten arrived late. That is worse than the average route in this record.
Which airlines fly from Dallas to San Jose?
Only Southwest Airlines appears in the published record on this route, with 458 flights and 66.96% arriving on time.
How often are DAL to SJC flights cancelled?
1.97% of scheduled flights did not operate — about 20 in every thousand. That is in the normal range.
What is the best month to fly Dallas to San Jose?
September, when 84.8% of flights arrived on time. The worst was June at 16.7%.
When DAL to SJC flights are late, how late are they?
About 49 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on DAL to SJC during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →