Route · BOI → GEG · 2020–2025 BTS data
Boise to Spokane
The BOI–GEG corridor (Boise, ID → Spokane, WA) runs ahead of the national average, served by 6 carriers across roughly 287 miles.
Data updated 2026-06-13
- 86.3%
- On-time
- +7.3 pts
- vs US avg
- 68 min
- Delay when late
- 3,018
- Flights
Cancelled
0.2%
Best Month
Oct 2022 98%
Worst Month
Dec 2022 64%
Distance
287 mi
Carriers
6
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 31 | 1 | 0 | 0 | OO |
| Jul 2025 | 31 | 5 | 0 | 0 | OO |
| Jun 2025 | 30 | 7 | 0 | 0 | OO |
| May 2025 | 39 | 4 | 0 | 0 | OO |
| Dec 2024 | 50 | 13 | 0 | 0 | OO |
| Nov 2024 | 78 | 9 | 0 | 0 | OO |
| Sep 2024 | 105 | 18 | 1 | 0 | OO |
| Aug 2024 | 110 | 21 | 0 | 0 | OO |
| Jul 2024 | 111 | 20 | 0 | 0 | OO |
| Jun 2024 | 92 | 26 | 0 | 0 | OO |
| May 2024 | 91 | 8 | 0 | 0 | OO |
| Apr 2024 | 104 | 7 | 0 | 0 | OO |
| Mar 2024 | 49 | 4 | 0 | 0 | OO |
| Nov 2023 | 31 | 6 | 1 | 0 | OO |
| Oct 2023 | 80 | 12 | 0 | 0 | OO |
| Sep 2023 | 98 | 3 | 0 | 0 | OO |
| Dec 2022 | 70 | 25 | 0 | 0 | OO,QX |
| Nov 2022 | 59 | 13 | 0 | 0 | OO,QX |
| Oct 2022 | 58 | 1 | 0 | 0 | OO,QX |
| Sep 2022 | 73 | 4 | 0 | 0 | QX |
| Aug 2022 | 89 | 6 | 0 | 0 | QX |
| Jul 2022 | 90 | 8 | 2 | 0 | QX |
| Jun 2022 | 90 | 15 | 0 | 0 | QX |
| May 2022 | 86 | 19 | 0 | 1 | QX |
Cancellation Rate
0.2%
4 of 1,745 flights
Diversion Rate
0.1%
1 of 1,745 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
BOI - Boise
Full on-time, delay-cause, and seasonal performance for Boise, ID.
Origin airport →GEG - Spokane
Full on-time, delay-cause, and seasonal performance for Spokane, WA.
Destination airport →Compare the two airports
See BOI and GEG side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to BOI–GEG.
Routes with a similar on-time rate
What the Data Says About BOI to GEG
Boise to Spokane (BOI to GEG) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 86.3% on-time rate across 3,018 flights, with delays that do happen averaging 68.0 minutes. The corridor runs roughly 287 miles and is served by 6 carriers. Over the most recent 24 months, 4 of 1,745 flights were cancelled (0.2%) and 1 diverted (0.1%).
The monthly split is wide on this route: Oct 2022 posted the strongest performance at 98% on-time, while Dec 2022 came in at just 64% - a 34-point swing worth factoring into travel timing.
Frequently Asked Questions
How often are flights delayed from BOI to GEG? ▼
What is the cancellation rate for BOI to GEG? ▼
How far is the flight from BOI to GEG? ▼
When is the best time to fly from BOI to GEG? ▼
Flight Guides
Tips and data-driven advice for choosing reliable routes.
Explore PlainFlights
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.