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Flight Reliability

AS 1455 · Alaska Airlines

Portland → Anchorage (PDX–ANC)

92
Nerd Approved
WanderNerd Reliability Score
85%
Arrive within 15 minutes
0 min
Average arrival delay
0%
Cancelled
9 min early
Median arrival delay

Based on 301 historical flights. Data through May 2026.

What the data says

Mornings have a slight edge.

Departures between 6–9 AM arrived on time 90% of the time, against 85% between 3–6 PM.

Thursday is the weak spot.

AS 1455 arrived on time 91% of the time on Mondays. On Thursdays: 78%.

A bit ahead of the PDX–ANC route.

AS 1455 arrived on time 85% of the time, versus 80% across the PDX–ANC route.

A bit ahead of the Alaska Airlines network.

AS 1455 arrived on time 85% of the time, versus 80% across the Alaska Airlines network.

The breakdown

On-time by weekday
  • Mon91%(45 flights)
  • Tue90%(40 flights)
  • Wed83%(40 flights)
  • Thu78%(45 flights)
  • Fri80%(45 flights)
  • Sat85%(41 flights)
  • Sun89%(44 flights)
On-time by departure window
  • 6–9 AM90%(19 flights)
  • 3–6 PM85%(281 flights)
On-time trend by month
97%
May

Jun 79% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202579%19
July 202571%31
August 202581%31
September 202593%30
October 202580%30
November 202586%29
December 202574%31
February 202690%10
March 202691%23
April 2026100%30
May 202697%30
Departures on time
80%
Diverted
0.3%
Flights flown
300
Months covered
12

Same route, other flights

Keep nerding

Based on 301 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.