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Flight Reliability

AS 576 · Alaska Airlines

San Diego → Portland (SAN–PDX)93% of its flights flew this route. The rest (SEA–DFW, PSP–PDX) are included in these numbers.

88
Pretty Reliable
WanderNerd Reliability Score
87%
Arrive within 15 minutes
6 min early
Average arrival delay
1.6%
Cancelled
14 min early
Median arrival delay

Based on 192 historical flights. Data through May 2026.

What the data says

The 9 AM–12 PM departure wins.

AS 576 departing between 9 AM–12 PM arrived on time 89% of the time, versus 46% between 12–3 AM.

Sunday scaries are real for this one.

AS 576 arrived on time 96% of the time on Saturdays and just 74% on Sundays. That gap is worth planning around.

A bit ahead of the Alaska Airlines network.

AS 576 arrived on time 87% of the time, versus 80% across the Alaska Airlines network.

Ticking up lately.

AS 576 arrived on time 94% of the time over the last three months in the data, compared with 91% in the three months before that.

The breakdown

On-time by weekday
  • Mon89%(28 flights)
  • Tue78%(27 flights)
  • Wed90%(29 flights)
  • Thu89%(27 flights)
  • Fri89%(27 flights)
  • Sat96%(28 flights)
  • Sun74%(23 flights)
On-time by departure window
  • 12–3 AM46%(11 flights)
  • 9 AM–12 PM89%(176 flights)
  • 12–3 PM—(2 flights)
On-time trend by month
90%
May

Jun 46% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202546%11
November 202587%30
December 202587%31
January 202686%29
February 2026100%11
March 2026100%13
April 202692%26
May 202690%31
Departures on time
83%
Diverted
0%
Flights flown
189
Months covered
9

Same route, other flights

Keep nerding

Based on 192 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.