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

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

Historically, 74.4% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 6,681 flights.

HISTORICAL ROUTE SIGNALGenerally reliable
74.4%arrived on time
13.6%30+ min late
1.0%cancelled
6,681scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late5.4%all scheduled flights
120+ minutes late1.7%all scheduled flights
Diverted0.0%did not reach as scheduled
Average arrival+6.0 mincompleted flights

When is this route most reliable?

The same route can behave differently through the day. These are scheduled departure windows, not actual departure times. Small time windows with fewer than 40 flights are withheld.

Departure windowFlightsOn time30+ minCancelled
Early morning79384.6%6.6%2.8%
Late morning1,52471.1%15.0%1.1%
Afternoon1,42476.6%12.9%0.7%
Evening1,75271.9%16.0%0.8%
Night1,18872.9%13.8%0.3%

Weekday comparison

Day-of-week results use at least 30 scheduled flights per row. Look for broad patterns, not tiny percentage differences.

DayFlightsOn time30+ minCancelled
Monday99173.0%14.8%0.6%
Tuesday98079.9%9.8%0.5%
Wednesday90274.8%13.3%0.6%
Thursday97571.5%14.9%0.9%
Friday95970.9%16.1%1.4%
Saturday88974.8%12.8%1.3%
Sunday98575.8%13.5%1.7%

Airline comparison

Marketing-carrier results make codeshare flights easier to compare as travelers buy them. Dedicated route-airline reports require at least 160 flights.

AirlineFlightsOn time30+ minCancelled
Alaska Airlines4,92874.0%13.6%1.1%
Delta Air Lines1,63077.2%12.8%0.6%
Hawaiian Airlines12352.8%26.8%1.6%

Monthly trend

Month-by-month results show whether a twelve-month average hides an unusual period.

MonthFlightsOn time30+ minCancelled
July 202574564.3%18.0%2.1%
August 202572471.5%15.5%1.1%
September 202562488.3%6.7%0.2%
October 202555375.4%13.0%1.6%
November 202548383.9%7.5%1.2%
December 202547853.8%27.6%1.0%
January 202647873.4%14.2%2.5%
February 202641479.5%10.1%0.2%
March 202647866.1%20.1%1.0%
April 202645284.1%6.6%0.0%
May 202658779.0%10.7%0.2%
June 202666575.6%12.3%0.5%

What drove reported delay minutes?

BTS cause minutes are reported for qualifying delayed flights. These shares describe recorded delay minutes—not the chance that a particular cause will affect your next flight.

Airline50.1%
Late aircraft27.3%
National airspace20.4%
Weather2.0%
Security0.1%
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.