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Flight Reliability

AS 2272 · Alaska Airlines

Portland → San Jose (PDX–SJC)98% of its flights flew this route. The rest (SEA–SMF, SMF–SEA) are included in these numbers.

91
Nerd Approved
WanderNerd Reliability Score
86%
Arrive within 15 minutes
2 min early
Average arrival delay
0.9%
Cancelled
7 min early
Median arrival delay

Based on 234 historical flights. Data through May 2026.

What the data says

The 3–6 PM departure wins.

AS 2272 departing between 3–6 PM arrived on time 97% of the time, versus 84% between 9 PM–12 AM.

Thursdays have been rough.

AS 2272 arrived on time 100% of the time on Saturdays and just 81% on Thursdays. That gap is worth planning around.

A bit ahead of the Alaska Airlines network.

AS 2272 arrived on time 86% of the time, versus 80% across the Alaska Airlines network.

Trending in the right direction.

AS 2272 arrived on time 94% of the time over the last three months in the data, compared with 79% in the three months before that.

The breakdown

On-time by weekday
  • Mon85%(40 flights)
  • Tue85%(34 flights)
  • Wed87%(30 flights)
  • Thu81%(37 flights)
  • Fri84%(37 flights)
  • Sat100%(15 flights)
  • Sun90%(39 flights)
On-time by departure window
  • 6–9 AM—(2 flights)
  • 9 AM–12 PM—(2 flights)
  • 3–6 PM97%(34 flights)
  • 9 PM–12 AM84%(194 flights)
On-time trend by month
95%
Apr

Jun 77% → Apr 95% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202577%26
July 202588%25
August 202588%25
September 202589%26
October 202565%17
November 202585%20
December 202587%15
February 202694%17
March 202694%31
April 202695%20
Departures on time
86%
Diverted
0%
Flights flown
232
Months covered
12

Same route, other flights

Keep nerding

Based on 234 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.