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Route Reliability

Juneau → Seattle

JNU–SEA · 909 miles · Juneau International Airport to Seattle–Tacoma International Airport

80
Pretty Reliable
WanderNerd Reliability Score
80%
Arrive within 15 minutes
4 min
Average arrival delay
2.0%
Cancelled
1,583
Flights in the data

Data through May 2026.

Who flies it best

Ranked by on-time arrivals. Historical results, not predictions.

  1. 1.Delta Air Lines93%140 flights
  2. 2.Alaska Airlines79%1,443 flights

What the data says

Morning-you made the right choice.

JNU–SEA flights departing between 3–6 AM arrived on time 91% of the time, versus 77% between 12–3 PM.

Friday is doing you no favors.

JNU–SEA flights arrived on time 84% of the time on Sundays. On Fridays: 77%.

Delta Air Lines runs this route best.

Delta Air Lines arrived on time 93% of the time on this route; Alaska Airlines managed 79%.

Ticking up lately.

JNU–SEA flights arrived on time 82% of the time over the last three months in the data, compared with 77% in the three months before that.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon81%(219 flights)
  • Tue82%(223 flights)
  • Wed78%(220 flights)
  • Thu82%(223 flights)
  • Fri77%(220 flights)
  • Sat78%(222 flights)
  • Sun84%(223 flights)
On-time by departure window
  • 12–3 AM83%(92 flights)
  • 3–6 AM91%(140 flights)
  • 6–9 AM80%(492 flights)
  • 12–3 PM77%(472 flights)
  • 3–6 PM91%(21 flights)
  • 6–9 PM79%(333 flights)
On-time trend by month
85%
May

Jun 80% → May 85% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202580%187
July 202580%213
August 202577%203
September 202580%176
October 202582%122
November 202587%87
December 202570%82
January 202678%87
February 202683%82
March 202670%91
April 202691%90
May 202685%130

Keep nerding

Based on 1,583 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.