Route · IDA → SEA · 2020–2025 BTS data
Idaho Falls to Seattle
The IDA–SEA corridor (Idaho Falls, ID → Seattle, WA) runs ahead of the national average, served by 2 carriers across roughly 566 miles.
Data updated 2026-06-13
- 79.4%
- On-time
- +0.4 pts
- vs US avg
- 70 min
- Delay when late
- 602
- Flights
Cancelled
1.5%
Best Month
Nov 2025 83%
Worst Month
Dec 2025 75%
Distance
566 mi
Carriers
2
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 55 | 14 | 0 | 0 | OO |
| Nov 2025 | 58 | 10 | 0 | 0 | OO |
| Dec 2022 | 31 | 10 | 4 | 1 | QX |
| Oct 2022 | 31 | 2 | 0 | 0 | QX |
| Sep 2022 | 30 | 3 | 0 | 0 | QX |
| Aug 2022 | 31 | 5 | 0 | 0 | QX |
| Jul 2022 | 31 | 0 | 0 | 0 | QX |
| Jun 2022 | 45 | 12 | 0 | 0 | QX |
| May 2022 | 44 | 8 | 0 | 0 | QX |
| Apr 2022 | 30 | 8 | 1 | 0 | QX |
| Mar 2022 | 31 | 4 | 1 | 0 | QX |
| Jan 2022 | 31 | 22 | 0 | 0 | QX |
| Dec 2021 | 31 | 11 | 2 | 0 | QX |
| Oct 2021 | 31 | 4 | 0 | 0 | QX |
| Sep 2021 | 30 | 6 | 0 | 0 | QX |
| Aug 2021 | 31 | 2 | 0 | 0 | QX |
| Jul 2021 | 31 | 3 | 1 | 0 | QX |
Cancellation Rate
1.5%
9 of 602 flights
Diversion Rate
0.2%
1 of 602 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
IDA - Idaho Falls
Full on-time, delay-cause, and seasonal performance for Idaho Falls, ID.
Origin airport →SEA - Seattle
Full on-time, delay-cause, and seasonal performance for Seattle, WA.
Destination airport →Compare the two airports
See IDA and SEA side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to IDA–SEA.
Routes with a similar on-time rate
What the Data Says About IDA to SEA
602 tracked flights put the IDA to SEA pairing (Idaho Falls to Seattle) at a 79.4% on-time rate, squarely in line with the wider network. Delays that do occur run 69.8 minutes on average. Across the 566-mile route and its 2 carriers, the trailing 24 months show 1.5% cancelled and 0.2% diverted (602 flights sampled).
Monthly performance varies moderately here: Nov 2025 was the strongest month at 83% on-time versus Dec 2025 at 75%, a 8-point difference.
Frequently Asked Questions
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Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.