BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
ANC→SEA

Anchorage, AK (ANC) to Seattle, WA (SEA) flight delay odds

84.5% of 6,681 official scheduled ANC-to-SEA flights arrived on time; 8.2% arrived at least 30 minutes late and 1.1% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALLower disruption
84.5%arrived on time
8.2%30+ min late
1.1%cancelled
6,681scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late4.0%all scheduled flights
120+ minutes late1.6%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival-2.9 mincompleted flights

Which departure time was most reliable for ANC to SEA?

Among qualifying ANC-to-SEA departure window results, Late morning had the highest on-time rate: 88.5% of 999 flights. Evening was lowest at 79.3% across 706 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning1,62386.9%6.0%0.7%
Late morning99988.5%6.5%1.9%
Afternoon1,70179.9%9.9%1.2%
Evening70679.3%12.6%0.7%
Night1,65286.5%7.9%1.2%

Which weekday was most reliable for ANC to SEA?

Among qualifying ANC-to-SEA weekday results, Wednesday had the highest on-time rate: 86.2% of 897 flights. Monday was lowest at 82.9% across 993 flights.

DayFlightsOn time30+ minCancelled
Monday99382.9%10.1%1.1%
Tuesday98584.9%7.7%0.8%
Wednesday89786.2%6.5%0.8%
Thursday97183.6%8.2%1.2%
Friday97384.4%7.9%1.5%
Saturday88283.8%8.3%1.1%
Sunday98085.6%8.8%1.2%

Which airline was most reliable for ANC to SEA?

Among qualifying ANC-to-SEA airline results, Delta Air Lines had the highest on-time rate: 88.5% of 1,630 flights. Hawaiian Airlines was lowest at 27.2% across 125 flights.

AirlineFlightsOn time30+ minCancelled
Alaska Airlines4,92684.6%7.7%1.2%
Delta Air Lines1,63088.5%7.7%0.7%
Hawaiian Airlines12527.2%37.6%2.4%

Which month was most reliable for ANC to SEA?

Among qualifying ANC-to-SEA month results, April 2026 had the highest on-time rate: 94.7% of 452 flights. July 2025 was lowest at 76.1% across 746 flights.

MonthFlightsOn time30+ minCancelled
July 202574676.1%11.7%2.7%
August 202572676.3%11.8%1.0%
September 202562586.4%7.5%0.3%
October 202555587.2%6.5%1.3%
November 202548585.4%6.8%1.4%
December 202547578.1%14.7%1.1%
January 202647577.7%13.3%2.7%
February 202641588.2%6.7%0.2%
March 202647886.2%8.6%1.0%
April 202645294.7%2.9%0.0%
May 202658593.3%3.4%0.5%
June 202666489.0%3.9%0.8%

What drove ANC to SEA delay minutes?

Airline was the largest recorded ANC-to-SEA delay category, accounting for 43.9% of 61,231 BTS-attributed delay minutes during July 2025–June 2026.

Airline43.9%
Late aircraft33.6%
National airspace14.3%
Weather7.7%
Security0.5%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.