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Route Reliability

Seattle → Anchorage

SEA–ANC · 1,448 miles · Seattle–Tacoma International Airport to Ted Stevens Anchorage International Airport

79
Usually Fine
WanderNerd Reliability Score
75%
Arrive within 15 minutes
7 min
Average arrival delay
1.0%
Cancelled
6,739
Flights in the data

Data through May 2026.

Who flies it best

Ranked by on-time arrivals. Historical results, not predictions.

  1. 1.Delta Air Lines79%1,643 flights
  2. 2.Alaska Airlines74%4,935 flights
  3. 3.Hawaiian Airlines57%161 flights

What the data says

Morning flights do better here.

SEA–ANC flights departing between 6–9 AM arrived on time 86% of the time, versus 72% between 3–6 PM.

Friday is doing you no favors.

SEA–ANC flights arrived on time 80% of the time on Tuesdays. On Fridays: 72%.

Delta Air Lines has a clear lead on this route.

Delta Air Lines arrived on time 79% of the time on this route; Hawaiian Airlines managed 57%.

Trending in the right direction.

SEA–ANC flights arrived on time 78% of the time over the last three months in the data, compared with 71% in the three months before that.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon74%(1001 flights)
  • Tue80%(958 flights)
  • Wed76%(897 flights)
  • Thu73%(973 flights)
  • Fri72%(954 flights)
  • Sat76%(880 flights)
  • Sun76%(1004 flights)
On-time by departure window
  • 6–9 AM86%(842 flights)
  • 9 AM–12 PM72%(1513 flights)
  • 12–3 PM78%(1021 flights)
  • 3–6 PM72%(982 flights)
  • 6–9 PM75%(1167 flights)
  • 9 PM–12 AM72%(1142 flights)
On-time trend by month
80%
May

Jun 68% → May 80% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202568%696
July 202567%729
August 202573%716
September 202589%623
October 202578%544
November 202586%478
December 202556%471
January 202676%465
February 202680%413
March 202668%473
April 202686%461
May 202680%598

Keep nerding

Based on 6,739 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.