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

Seattle, WA (SEA) to Juneau, AK (JNU) flight delay odds

75.2% of 1,589 official scheduled SEA-to-JNU flights arrived on time; 12.8% arrived at least 30 minutes late and 1.4% 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 SIGNALGenerally reliable
75.2%arrived on time
12.8%30+ min late
1.4%cancelled
1,589scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late5.0%all scheduled flights
120+ minutes late1.7%all scheduled flights
Diverted0.4%did not reach as scheduled
Average arrival+4.4 mincompleted flights

Which departure time was most reliable for SEA to JNU?

Among qualifying SEA-to-JNU departure window results, Afternoon had the highest on-time rate: 84.4% of 262 flights. Evening was lowest at 64.8% across 233 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning36282.0%8.6%0.3%
Late morning47872.8%12.8%1.3%
Afternoon26284.4%9.9%0.4%
Evening23364.8%19.3%1.7%
Night25470.1%15.7%3.9%

Which weekday was most reliable for SEA to JNU?

Among qualifying SEA-to-JNU weekday results, Wednesday had the highest on-time rate: 79.8% of 228 flights. Thursday was lowest at 69.2% across 224 flights.

DayFlightsOn time30+ minCancelled
Monday22675.7%12.4%0.4%
Tuesday23279.3%9.1%1.7%
Wednesday22879.8%11.0%0.9%
Thursday22469.2%17.4%1.3%
Friday22776.2%14.5%0.9%
Saturday22673.9%11.5%1.3%
Sunday22672.1%13.7%3.1%

Which airline was most reliable for SEA to JNU?

Among qualifying SEA-to-JNU airline results, Delta Air Lines had the highest on-time rate: 79.4% of 141 flights. Alaska Airlines was lowest at 74.8% across 1,448 flights.

AirlineFlightsOn time30+ minCancelled
Alaska Airlines1,44874.8%12.8%1.5%
Delta Air Lines14179.4%12.1%0.7%

Which month was most reliable for SEA to JNU?

Among qualifying SEA-to-JNU month results, April 2026 had the highest on-time rate: 90.0% of 90 flights. July 2025 was lowest at 59.4% across 217 flights.

MonthFlightsOn time30+ minCancelled
July 202521759.4%18.4%1.8%
August 202520473.0%16.7%0.5%
September 202518085.6%8.9%1.7%
October 202512379.7%9.8%2.4%
November 20258782.8%9.2%0.0%
December 20259062.2%20.0%4.4%
January 20269170.3%11.0%4.4%
February 20268477.4%14.3%1.2%
March 20269375.3%12.9%1.1%
April 20269090.0%2.2%0.0%
May 202613180.9%10.7%0.0%
June 202619975.9%12.6%0.5%

What drove SEA to JNU delay minutes?

Airline was the largest recorded SEA-to-JNU delay category, accounting for 46.2% of 17,397 BTS-attributed delay minutes during July 2025–June 2026.

Airline46.2%
Late aircraft33.2%
National airspace15.2%
Weather5.3%
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.