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Route Reliability

Seattle → IDA

SEA–IDA · 566 miles · Seattle–Tacoma International Airport to IDA Airport

87
Pretty Reliable
WanderNerd Reliability Score
81%
Arrive within 15 minutes
4 min
Average arrival delay
0.4%
Cancelled
720
Flights in the data

Data through May 2026.

Alaska Airlines is the only airline in this data on this route, arriving on time 81% of the time across 720 flights. No comparison to make.

What the data says

The 3–6 PM departure wins.

SEA–IDA flights departing between 3–6 PM arrived on time 89% of the time, versus 70% between 9 AM–12 PM.

Saturday comes out ahead.

A small edge: 84% on time on Saturdays against 78% on Thursdays.

Ticking up lately.

SEA–IDA flights arrived on time 86% of the time over the last three months in the data, compared with 83% 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%(102 flights)
  • Tue84%(101 flights)
  • Wed80%(103 flights)
  • Thu78%(101 flights)
  • Fri81%(101 flights)
  • Sat84%(102 flights)
  • Sun80%(105 flights)
On-time by departure window
  • 9 AM–12 PM70%(30 flights)
  • 12–3 PM80%(297 flights)
  • 3–6 PM89%(36 flights)
  • 6–9 PM84%(288 flights)
  • 9 PM–12 AM77%(64 flights)
On-time trend by month
82%
May

Jun 70% → May 82% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202570%60
July 202574%61
August 202571%62
September 202585%60
October 202584%62
November 202586%58
December 202570%54
January 202690%62
February 202687%55
March 202688%59
April 202687%60
May 202682%62

Keep nerding

Based on 720 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.