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

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

78.7% of 1,591 official scheduled JNU-to-SEA flights arrived on time; 10.7% arrived at least 30 minutes late and 1.9% 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
78.7%arrived on time
10.7%30+ min late
1.9%cancelled
1,591scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late4.6%all scheduled flights
120+ minutes late1.8%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+3.9 mincompleted flights

Which departure time was most reliable for JNU to SEA?

Among qualifying JNU-to-SEA departure window results, Early morning had the highest on-time rate: 80.8% of 646 flights. Night was lowest at 75.0% across 80 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning64680.8%8.2%1.9%
Afternoon47875.3%14.0%1.5%
Evening38780.1%10.9%1.6%
Night8075.0%10.0%7.5%

Which weekday was most reliable for JNU to SEA?

Among qualifying JNU-to-SEA weekday results, Sunday had the highest on-time rate: 80.2% of 227 flights. Friday was lowest at 76.1% across 226 flights.

DayFlightsOn time30+ minCancelled
Monday22778.9%10.1%2.6%
Tuesday23479.1%12.0%1.7%
Wednesday22777.5%11.5%2.2%
Thursday22479.9%9.4%0.4%
Friday22676.1%12.4%2.2%
Saturday22679.2%9.7%0.9%
Sunday22780.2%9.7%3.5%

Which airline was most reliable for JNU to SEA?

Among qualifying JNU-to-SEA airline results, Delta Air Lines had the highest on-time rate: 91.5% of 141 flights. Alaska Airlines was lowest at 77.4% across 1,450 flights.

AirlineFlightsOn time30+ minCancelled
Alaska Airlines1,45077.4%11.2%2.1%
Delta Air Lines14191.5%5.0%0.7%

Which month was most reliable for JNU to SEA?

Among qualifying JNU-to-SEA month results, April 2026 had the highest on-time rate: 91.1% of 90 flights. December 2025 was lowest at 64.0% across 89 flights.

MonthFlightsOn time30+ minCancelled
July 202521777.9%11.1%1.4%
August 202520575.6%14.1%1.0%
September 202518076.7%14.4%2.2%
October 202512578.4%8.8%2.4%
November 20258886.4%6.8%1.1%
December 20258964.0%19.1%7.9%
January 20269273.9%13.0%5.4%
February 20268481.0%6.0%2.4%
March 20269367.7%12.9%2.2%
April 20269091.1%2.2%0.0%
May 202613083.8%7.7%0.0%
June 202619885.4%8.1%1.0%

What drove JNU to SEA delay minutes?

Airline was the largest recorded JNU-to-SEA delay category, accounting for 42.9% of 18,813 BTS-attributed delay minutes during July 2025–June 2026.

Airline42.9%
Late aircraft30.7%
National airspace19.6%
Weather5.9%
Security1.0%
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.