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Flight Reliability

AS 1393 · Alaska Airlines

Portland → San Francisco (PDX–SFO)

73
Usually Fine
WanderNerd Reliability Score
69%
Arrive within 15 minutes
11 min
Average arrival delay
0.5%
Cancelled
2 min early
Median arrival delay

Based on 208 historical flights. Data through May 2026.

What the data says

Thursdays have been rough.

AS 1393 arrived on time 81% of the time on Saturdays and just 55% on Thursdays. That gap is worth planning around.

Lagging the PDX–SFO route.

AS 1393 arrived on time 69% of the time, versus 76% across the PDX–SFO route.

Lagging the Alaska Airlines network.

AS 1393 arrived on time 69% of the time, versus 80% across the Alaska Airlines network.

Recent months have been rougher.

AS 1393 arrived on time 62% of the time over the last three months in the data, compared with 72% in the three months before that.

The breakdown

On-time by weekday
  • Mon68%(31 flights)
  • Tue77%(31 flights)
  • Wed71%(31 flights)
  • Thu55%(29 flights)
  • Fri71%(31 flights)
  • Sat81%(21 flights)
  • Sun63%(32 flights)
On-time by departure window
  • 3–6 PM69%(196 flights)
  • 6–9 PM70%(10 flights)
On-time trend by month
42%
May

Nov 82% → May 42% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
November 202582%27
December 202566%29
January 202686%29
February 202664%28
March 202690%29
April 202656%27
May 202642%31
Departures on time
73%
Diverted
0.5%
Flights flown
206
Months covered
8

Same route, other flights

Keep nerding

Based on 208 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.