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Route Reliability

Portland → San Jose

PDX–SJC · 569 miles · Portland International Airport to San José Mineta International Airport

90
Nerd Approved
WanderNerd Reliability Score
84%
Arrive within 15 minutes
2 min
Average arrival delay
0.4%
Cancelled
2,553
Flights in the data

Data through May 2026.

Who flies it best

Ranked by on-time arrivals. Historical results, not predictions.

  1. 1.Alaska Airlines89%1,554 flights
  2. 2.Southwest Airlines78%999 flights

What the data says

Morning-you made the right choice.

PDX–SJC flights departing between 3–6 AM arrived on time 98% of the time, versus 58% between 6–9 PM.

Skip Tuesday if you can.

PDX–SJC flights arrived on time 89% of the time on Saturdays. On Tuesdays: 81%.

Alaska Airlines runs this route best.

Alaska Airlines arrived on time 89% of the time on this route; Southwest Airlines managed 78%.

Ticking up lately.

PDX–SJC flights arrived on time 90% of the time over the last three months in the data, compared with 86% in the three months before that.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon86%(400 flights)
  • Tue81%(348 flights)
  • Wed86%(344 flights)
  • Thu82%(397 flights)
  • Fri84%(392 flights)
  • Sat89%(268 flights)
  • Sun84%(391 flights)
On-time by departure window
  • 3–6 AM98%(59 flights)
  • 6–9 AM93%(572 flights)
  • 9 AM–12 PM88%(340 flights)
  • 12–3 PM87%(513 flights)
  • 3–6 PM80%(510 flights)
  • 6–9 PM58%(241 flights)
  • 9 PM–12 AM84%(305 flights)
On-time trend by month
88%
May

Jun 78% → May 88% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202578%218
July 202579%221
August 202586%252
September 202582%243
October 202580%237
November 202585%206
December 202583%237
January 202686%183
February 202689%167
March 202690%182
April 202691%191
May 202688%203

Same trip, other airports

Keep nerding

Based on 2,553 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.