JNU to SEA flight delays & on-time performance
Nonstop flights from Juneau International Airport to Seattle–Tacoma International Airport · 909 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at JNU or SEA right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Juneau (JNU) to Seattle (SEA) arrived on time 81% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 1.8% were cancelled, and 5% arrived an hour or more late.
- Delta Air Lines was the most punctual airline here (92% on time); Alaska Airlines was the least (80%).
- Departures scheduled around 8pm did best (96% on time); around 1pm did worst (73%).
- Monday was the most reliable day to fly (83% on time) and Thursday the least (79%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (43%).
Which airline is most on time from JNU to SEA?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Delta Air Lines | 92% | 0.7% | 11 min | 2.9% | 141 |
| Alaska Airlines | 80% | 1.9% | 14 min | 4.9% | 1,449 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 1am83%19 flights
- 2am78%30 flights
- 5am90%143 flights
- 6am66%43 flights
- 7am81%460 flights
- 12pm75%144 flights
- 1pm73%80 flights
- 2pm78%254 flights
- 5pm90%21 flights
- 6pm81%341 flights
- 8pm96%51 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday83%1.8% cancelled
- Tuesday79%1.8% cancelled
- Wednesday81%2.2% cancelled
- Thursday79%0.4% cancelled
- Friday81%1.7% cancelled
- Saturday80%0.9% cancelled
- Sunday82%3.5% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)43%
- Late-arriving aircraft30%
- Air traffic control & airport congestion19%
- Extreme weather6%
- Security1%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)50%
- Extreme weather50%
- Air traffic control & airport congestion0%
- Security0%
JNU to SEA: common questions
- How often are JNU to SEA flights on time?
- 81% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Juneau to Seattle cancelled?
- 1.8% of scheduled flights were cancelled (28 of 1,590).
- How long are typical delays?
- Across all flights the average arrival delay was 13 min (early arrivals count as zero). Flights that were late arrived 63 min behind schedule on average, and 4.7% of flights were an hour or more late.
- How long is taxi time at JNU?
- Flights on this route spent 13 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SEA to JNU — 79% on time
More flights from Juneau
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: JNU → SEA, nonstop flights by US airlines that report to the DOT. How we calculate this.