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Route Reliability

Anchorage → Seattle

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

89
Pretty Reliable
WanderNerd Reliability Score
85%
Arrive within 15 minutes
2 min early
Average arrival delay
1.1%
Cancelled
6,735
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 Lines90%1,642 flights
  2. 2.Alaska Airlines86%4,931 flights
  3. 3.Hawaiian Airlines31%162 flights

What the data says

Morning flights do better here.

ANC–SEA flights departing between 3–6 AM arrived on time 90% of the time, versus 75% between 3–6 PM.

Not much in it.

Weekday differences are small here: 84% to 87% on time across the week.

Delta Air Lines has a clear lead on this route.

Delta Air Lines arrived on time 90% of the time on this route; Hawaiian Airlines managed 31%.

Trending in the right direction.

ANC–SEA flights arrived on time 92% of the time over the last three months in the data, compared with 83% 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
  • Mon84%(997 flights)
  • Tue86%(962 flights)
  • Wed87%(892 flights)
  • Thu85%(964 flights)
  • Fri85%(965 flights)
  • Sat84%(880 flights)
  • Sun87%(997 flights)
On-time by departure window
  • 12–3 AM87%(1596 flights)
  • 3–6 AM90%(337 flights)
  • 6–9 AM87%(1331 flights)
  • 9 AM–12 PM90%(1018 flights)
  • 12–3 PM85%(1096 flights)
  • 3–6 PM75%(1095 flights)
  • 6–9 PM89%(184 flights)
On-time trend by month
94%
May

Jun 84% → May 94% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202584%695
July 202579%726
August 202579%719
September 202587%623
October 202589%546
November 202587%478
December 202580%470
January 202680%462
February 202689%414
March 202688%470
April 202695%461
May 202694%593

Keep nerding

Based on 6,735 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.