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Flight Reliability

AS 197 · Alaska Airlines

Portland → Anchorage (PDX–ANC)

83
Pretty Reliable
WanderNerd Reliability Score
77%
Arrive within 15 minutes
4 min
Average arrival delay
0%
Cancelled
0 min
Median arrival delay

Based on 262 historical flights. Data through May 2026.

What the data says

12–3 PM has a slight edge.

Departures between 12–3 PM arrived on time 79% of the time, against 74% between 9 PM–12 AM.

Thursdays have been rough.

AS 197 arrived on time 94% of the time on Saturdays and just 65% on Thursdays. That gap is worth planning around.

A bit behind the PDX–ANC route.

AS 197 arrived on time 77% of the time, versus 80% across the PDX–ANC route.

A bit behind the Alaska Airlines network.

AS 197 arrived on time 77% of the time, versus 80% across the Alaska Airlines network.

The breakdown

On-time by weekday
  • Mon77%(39 flights)
  • Tue72%(39 flights)
  • Wed76%(38 flights)
  • Thu65%(37 flights)
  • Fri76%(38 flights)
  • Sat94%(32 flights)
  • Sun82%(38 flights)
On-time by departure window
  • 12–3 PM79%(136 flights)
  • 9 PM–12 AM74%(125 flights)
On-time trend by month
87%
Mar

Jun 70% → Mar 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202570%30
July 202561%31
August 202574%31
September 202593%30
November 202593%29
December 202557%30
January 202684%31
February 202680%25
March 202687%15
Departures on time
82%
Diverted
0.4%
Flights flown
261
Months covered
10

Same route, other flights

Keep nerding

Based on 262 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.