Route · GEG → SLC · 2020–2025 BTS data
Spokane to Salt Lake City
The GEG–SLC corridor (Spokane, WA → Salt Lake City, UT) runs ahead of the national average, served by 3 carriers across roughly 546 miles.
Data updated 2026-06-13
- 89%
- On-time
- +10 pts
- vs US avg
- 87 min
- Delay when late
- 9,437
- Flights
Cancelled
0.4%
Best Month
Apr 2024 96%
Worst Month
Jul 2024 76%
Distance
546 mi
Carriers
3
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 147 | 10 | 1 | 0 | DL,OO |
| Nov 2025 | 135 | 11 | 1 | 0 | OO,DL |
| Oct 2025 | 146 | 16 | 1 | 0 | OO,DL |
| Sep 2025 | 137 | 13 | 0 | 0 | OO,DL |
| Aug 2025 | 144 | 22 | 1 | 1 | OO,DL |
| Jul 2025 | 146 | 17 | 0 | 0 | DL,OO |
| Jun 2025 | 144 | 14 | 0 | 0 | DL,OO |
| May 2025 | 150 | 23 | 0 | 0 | DL,OO |
| Apr 2025 | 152 | 9 | 0 | 0 | OO,DL |
| Mar 2025 | 145 | 13 | 0 | 0 | DL,OO |
| Feb 2025 | 106 | 19 | 0 | 0 | DL,OO |
| Jan 2025 | 123 | 10 | 0 | 0 | DL,OO |
| Dec 2024 | 147 | 26 | 0 | 0 | DL,OO |
| Nov 2024 | 128 | 12 | 0 | 0 | DL,OO |
| Oct 2024 | 146 | 9 | 0 | 0 | OO,DL |
| Sep 2024 | 139 | 12 | 0 | 1 | OO,DL |
| Aug 2024 | 133 | 30 | 0 | 0 | DL,OO |
| Jul 2024 | 145 | 35 | 9 | 0 | DL,OO |
| Jun 2024 | 144 | 18 | 0 | 0 | DL,OO |
| May 2024 | 150 | 20 | 0 | 0 | DL,OO |
| Apr 2024 | 146 | 6 | 1 | 1 | DL,OO |
| Mar 2024 | 141 | 9 | 0 | 0 | DL,OO |
| Feb 2024 | 107 | 11 | 0 | 0 | DL,OO |
| Jan 2024 | 123 | 28 | 0 | 0 | DL,OO |
Cancellation Rate
0.4%
14 of 3,324 flights
Diversion Rate
0.1%
3 of 3,324 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
GEG - Spokane
Full on-time, delay-cause, and seasonal performance for Spokane, WA.
Origin airport →SLC - Salt Lake City
Full on-time, delay-cause, and seasonal performance for Salt Lake City, UT.
Destination airport →Compare the two airports
See GEG and SLC side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to GEG–SLC.
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What the Data Says About GEG to SLC
Spokane to Salt Lake City (GEG to SLC) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 89% on-time rate across 9,437 flights, with delays that do happen averaging 86.6 minutes. The corridor runs roughly 546 miles and is served by 3 carriers. Over the most recent 24 months, 14 of 3,324 flights were cancelled (0.4%) and 3 diverted (0.1%).
The monthly split is wide on this route: Apr 2024 posted the strongest performance at 96% on-time, while Jul 2024 came in at just 76% - a 20-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.