SJC to PDX flight delays
San Jose, CA (SJC) Portland, OR (PDX) · 569 miles
1,621 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
84.88%
Arrived on time
Within 15 minutes of schedule
0%
Cancelled
Share of scheduled flights
54 min
When late, late by
Average across delayed arrivals
9 min
Delay per flight
Averaged over every flight flown
What the record says about this route
Which airline you fly changes the odds here. Alaska Airlines arrived on time 16 points more often than Southwest Airlines over the same period on the same route — same airports, same weather, same air traffic control. A gap that survives all of that is about how the two airlines are run.
Flights from San Jose to Portland keep to schedule more reliably than most. On a route this punctual the day you fly matters more than the airline you pick.
Which airline should you fly on this route?
Over January 2025 – August 2026, Alaska Airlines arrived on time most often on SJC to PDX. Southwest Airlines was late most often. Flights ran closest to schedule in May and worst in July.
Every airline on SJC to PDX
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 | 973 | 79.12% | 0% | 50 min | C |
| SkyWest Airlines | 484 | 92.98% | 0% | 66 min | A |
| Alaska Airlines | 164 | 95.12% | 0% | 101 min | A |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
PDX to SJC Portland back to San Jose 82.27% on time BOther routes from San Jose
Common questions
Are flights from San Jose to Portland usually delayed?
84.88% of flights on the SJC to PDX route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is better than the average route in this record.
Which airline is most on time from San Jose to Portland?
Alaska Airlines, at 95.12% on time across 164 flights. The least punctual on the route was Southwest Airlines at 79.12%.
How often are SJC to PDX flights cancelled?
0% of scheduled flights did not operate — about 1 in every thousand. That is in the normal range.
What is the best month to fly San Jose to Portland?
May, when 90.5% of flights arrived on time. The worst was July at 75%.
When SJC to PDX flights are late, how late are they?
About 54 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 SJC to PDX 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 →