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Flight Reliability

AS 541 · Alaska Airlines

Austin → Portland (AUS–PDX)90% of its flights flew this route. The rest (SEA–ANC, SFO–SEA) are included in these numbers.

93
Nerd Approved
WanderNerd Reliability Score
87%
Arrive within 15 minutes
4 min early
Average arrival delay
0.4%
Cancelled
9 min early
Median arrival delay

Based on 259 historical flights. Data through May 2026.

What the data says

6–9 PM has a slight edge.

Departures between 6–9 PM arrived on time 92% of the time, against 86% between 6–9 AM.

Tuesdays have been rough.

AS 541 arrived on time 95% of the time on Fridays and just 77% on Tuesdays. That gap is worth planning around.

A bit ahead of the Alaska Airlines network.

AS 541 arrived on time 87% of the time, versus 80% across the Alaska Airlines network.

Trending in the right direction.

AS 541 arrived on time 97% of the time over the last three months in the data, compared with 83% in the three months before that.

The breakdown

On-time by weekday
  • Mon83%(41 flights)
  • Tue77%(34 flights)
  • Wed93%(29 flights)
  • Thu89%(35 flights)
  • Fri95%(40 flights)
  • Sat90%(41 flights)
  • Sun82%(38 flights)
On-time by departure window
  • 6–9 AM86%(233 flights)
  • 6–9 PM92%(25 flights)
On-time trend by month
93%
May

Jun 67% → May 93% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202567%30
July 202584%31
August 202586%29
September 202591%21
October 202590%20
November 202593%30
December 202564%14
March 2026100%14
April 202697%30
May 202693%30
Departures on time
85%
Diverted
0%
Flights flown
258
Months covered
12

Same route, other flights

Keep nerding

Based on 259 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.