FlightRecord

Seattle (SEA) to Idaho Falls (IDA): On-Time Performance

Data through July 2026

SkyWest Airlines effectively owns the SEA–IDA corridor, operating 100% of its flights and landing on time 80% of the time. The route overall runs 80% on-time, about level with the national average.

On-time
80%
arrived <15 min late
Avg delay
11 min
completed flights
Cancelled
0.3%
Flights/day
1.0
last 12 months
Duration
1h 49m
scheduled
Distance
566 mi

Monthly on-time trend

Monthly on-time percentage for SEA to IDA flights50%75%100%October 2025: 92% on-time (12 flights)92Oct 2025November 2025: 86% on-time (58 flights)86December 2025: 69% on-time (55 flights)69January 2026: 82% on-time (11 flights)82Jan 2026March 2026: 93% on-time (29 flights)93April 2026: 85% on-time (41 flights)85May 2026: 77% on-time (39 flights)77May 2026June 2026: 77% on-time (60 flights)77July 2026: 77% on-time (62 flights)77

Best time to fly from SEA to IDA

Aim for departures around 8 p.m. (89% on-time); avoid 11 a.m. departures (70%).

On-time percentage by scheduled departure hour, SEA to IDA11 a.m.: 70% on-time (30 flights)1112 p.m.: 80% on-time (106 flights)121 p.m.: 78% on-time (37 flights)137 p.m.: 79% on-time (53 flights)198 p.m.: 89% on-time (63 flights)209 p.m.: 75% on-time (64 flights)21scheduled departure hour

By day of week

DayOn-timeAvg delay
Monday85%6 min
Tuesday77%16 min
Wednesday83%12 min
Thursday69%14 min
Friday77%10 min
Saturday84%8 min
Sundaybest85%10 min

What causes delays on this route

Share of total delay minutes by cause, as reported by carriers to the US DOT.

  • Late-arriving aircraft52%
  • Airline operations28%
  • National airspace system10%
  • Weather10%

Frequently asked questions

How often are flights from SEA to IDA delayed?
20% of SEA–IDA flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 11 minutes.
What is the best time of day to fly from SEA to IDA?
Departures around 8 p.m. have the best record (89% on-time), while departures around 11 a.m. have the worst (70%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
How long is the flight from SEA to IDA?
The scheduled SEA–IDA flight time averages 1h 49m over 566 miles. Actual arrival times vary — flights on this route land 15+ minutes late 20% of the time.
How often are SEA to IDA flights cancelled?
0.3% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
What day of the week is most reliable for SEA to IDA?
Sunday flights have the best record at 85% on-time. Day-of-week differences on this route are meaningful — Thursday trails at 69%.

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Based on 367 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.