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Airline Reliability

Alaska Airlines

Carrier code AS · 459,055 flights in the data

82
Pretty Reliable
WanderNerd Reliability Score
80%
Arrive within 15 minutes
4 min
Average arrival delay
1.4%
Cancelled
5 min early
Median arrival delay

Data through May 2026.

What the data says

Morning flights do better here.

Alaska Airlines flights departing between 3–6 AM arrived on time 94% of the time, versus 75% between 6–9 PM.

Tuesday comes out ahead.

A small edge: 83% on time on Tuesdays against 77% on Fridays.

The breakdown

On-time by weekday
  • Mon80%(67201 flights)
  • Tue83%(62077 flights)
  • Wed82%(61898 flights)
  • Thu79%(66086 flights)
  • Fri77%(66275 flights)
  • Sat82%(60212 flights)
  • Sun79%(67567 flights)
On-time by departure window
  • 12–3 AM86%(3232 flights)
  • 3–6 AM94%(6532 flights)
  • 6–9 AM87%(96049 flights)
  • 9 AM–12 PM81%(84234 flights)
  • 12–3 PM79%(77197 flights)
  • 3–6 PM78%(81124 flights)
  • 6–9 PM75%(69053 flights)
  • 9 PM–12 AM79%(33895 flights)
On-time trend by month
83%
May

Jun 74% → May 83% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202574%37492
July 202575%38561
August 202577%38488
September 202585%35184
October 202582%34712
November 202582%33599
December 202575%35252
January 202681%38290
February 202684%35152
March 202681%40503
April 202685%40459
May 202683%43624

Busiest Alaska Airlines routes

Biggest airports

Based on 459,055 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.