Route · SLC → BOI · 2020–2025 BTS data
Salt Lake City to Boise
The SLC–BOI corridor (Salt Lake City, UT → Boise, ID) runs ahead of the national average, served by 4 carriers across roughly 290 miles.
Data updated 2026-06-13
- 88%
- On-time
- +9 pts
- vs US avg
- 68 min
- Delay when late
- 10,115
- Flights
Cancelled
0.6%
Best Month
Feb 2024 94%
Worst Month
Jan 2024 71%
Distance
290 mi
Carriers
4
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 149 | 24 | 3 | 1 | DL,OO |
| Nov 2025 | 147 | 16 | 5 | 0 | OO,DL |
| Oct 2025 | 155 | 17 | 0 | 0 | DL,OO |
| Sep 2025 | 150 | 19 | 0 | 0 | OO,DL |
| Aug 2025 | 155 | 21 | 0 | 0 | OO,DL |
| Jul 2025 | 150 | 21 | 0 | 0 | OO,DL |
| Jun 2025 | 147 | 21 | 2 | 0 | OO,DL |
| May 2025 | 148 | 18 | 0 | 0 | DL |
| Apr 2025 | 136 | 18 | 0 | 0 | DL |
| Mar 2025 | 138 | 17 | 0 | 0 | DL |
| Feb 2025 | 112 | 21 | 0 | 0 | OO,DL |
| Jan 2025 | 127 | 17 | 1 | 0 | OO,DL |
| Dec 2024 | 147 | 29 | 0 | 0 | DL,OO |
| Nov 2024 | 135 | 14 | 0 | 0 | OO,DL |
| Oct 2024 | 146 | 13 | 0 | 0 | OO,DL |
| Sep 2024 | 139 | 11 | 0 | 0 | OO,DL |
| Aug 2024 | 133 | 28 | 1 | 0 | DL |
| Jul 2024 | 144 | 34 | 7 | 0 | DL,OO |
| Jun 2024 | 144 | 23 | 0 | 0 | DL,OO |
| May 2024 | 150 | 24 | 0 | 0 | DL,OO |
| Apr 2024 | 146 | 15 | 0 | 0 | DL,OO |
| Mar 2024 | 143 | 22 | 0 | 0 | DL,OO |
| Feb 2024 | 116 | 7 | 0 | 0 | DL |
| Jan 2024 | 129 | 37 | 0 | 0 | DL,OO |
Cancellation Rate
0.6%
19 of 3,386 flights
Diversion Rate
0.0%
1 of 3,386 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
SLC - Salt Lake City
Full on-time, delay-cause, and seasonal performance for Salt Lake City, UT.
Origin airport →BOI - Boise
Full on-time, delay-cause, and seasonal performance for Boise, ID.
Destination airport →Compare the two airports
See SLC and BOI side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to SLC–BOI.
Routes with a similar on-time rate
What the Data Says About SLC to BOI
Salt Lake City to Boise (SLC to BOI) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 88% on-time rate across 10,115 flights, with delays that do happen averaging 68.2 minutes. The corridor runs roughly 290 miles and is served by 4 carriers. Over the most recent 24 months, 19 of 3,386 flights were cancelled (0.6%) and 1 diverted (0.0%).
The monthly split is wide on this route: Feb 2024 posted the strongest performance at 94% on-time, while Jan 2024 came in at just 71% - a 23-point swing worth factoring into travel timing.
Frequently Asked Questions
How often are flights delayed from SLC to BOI? ▼
What is the cancellation rate for SLC to BOI? ▼
How far is the flight from SLC to BOI? ▼
When is the best time to fly from SLC to BOI? ▼
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.