Route · SEA → IDA · 2020–2025 BTS data
Seattle to Idaho Falls
The SEA–IDA corridor (Seattle, WA → Idaho Falls, ID) runs behind the national average, served by 2 carriers across roughly 566 miles.
Data updated 2026-06-13
- 77.1%
- On-time
- -1.9 pts
- vs US avg
- 55 min
- Delay when late
- 602
- Flights
Cancelled
1.0%
Best Month
Nov 2025 86%
Worst Month
Dec 2025 71%
Distance
566 mi
Carriers
2
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 55 | 16 | 0 | 1 | OO |
| Nov 2025 | 58 | 8 | 0 | 0 | OO |
| Dec 2022 | 31 | 6 | 4 | 0 | QX |
| Oct 2022 | 31 | 4 | 0 | 0 | QX |
| Sep 2022 | 30 | 8 | 0 | 1 | QX |
| Aug 2022 | 31 | 6 | 0 | 1 | QX |
| Jul 2022 | 31 | 3 | 0 | 0 | QX |
| Jun 2022 | 45 | 14 | 0 | 0 | QX |
| May 2022 | 44 | 13 | 0 | 0 | QX |
| Apr 2022 | 30 | 7 | 0 | 0 | QX |
| Mar 2022 | 31 | 6 | 0 | 0 | QX |
| Jan 2022 | 31 | 17 | 0 | 0 | QX |
| Dec 2021 | 31 | 6 | 2 | 0 | QX |
| Oct 2021 | 31 | 3 | 0 | 0 | QX |
| Sep 2021 | 30 | 6 | 0 | 0 | QX |
| Aug 2021 | 31 | 9 | 0 | 1 | QX |
| Jul 2021 | 31 | 6 | 0 | 0 | QX |
Cancellation Rate
1.0%
6 of 602 flights
Diversion Rate
0.7%
4 of 602 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
SEA - Seattle
Full on-time, delay-cause, and seasonal performance for Seattle, WA.
Origin airport →IDA - Idaho Falls
Full on-time, delay-cause, and seasonal performance for Idaho Falls, ID.
Destination airport →Compare the two airports
See SEA and IDA side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to SEA–IDA.
Routes with a similar on-time rate
What the Data Says About SEA to IDA
The Seattle to Idaho Falls corridor (SEA to IDA) posts a 77.1% on-time rate on the lower edge of the average band, based on 602 tracked flights. Late flights run 54.9 minutes behind on average. 2 carriers cover the 566-mile route; over the last 24 months, 6 of 602 flights were cancelled (1.0%) and 0.7% diverted.
The monthly split is wide on this route: Nov 2025 posted the strongest performance at 86% on-time, while Dec 2025 came in at just 71% - a 15-point swing worth factoring into travel timing.
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.