Route · BIL → SLC · 2020–2025 BTS data
Billings to Salt Lake City
The BIL–SLC corridor (Billings, MT → Salt Lake City, UT) runs ahead of the national average, served by 3 carriers across roughly 387 miles.
Data updated 2026-06-13
- 91.5%
- On-time
- +12.5 pts
- vs US avg
- 94 min
- Delay when late
- 6,399
- Flights
Cancelled
0.6%
Best Month
Sep 2025 98%
Worst Month
Feb 2025 73%
Distance
387 mi
Carriers
3
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 90 | 14 | 0 | 0 | DL,OO |
| Nov 2025 | 88 | 5 | 4 | 0 | OO,DL |
| Oct 2025 | 92 | 6 | 0 | 0 | OO,DL |
| Sep 2025 | 90 | 2 | 0 | 0 | OO,DL |
| Aug 2025 | 93 | 8 | 0 | 0 | OO,DL |
| Jul 2025 | 92 | 7 | 1 | 0 | DL,OO |
| Jun 2025 | 90 | 3 | 0 | 0 | DL,OO |
| May 2025 | 93 | 3 | 0 | 0 | DL,OO |
| Apr 2025 | 90 | 6 | 0 | 0 | OO,DL |
| Mar 2025 | 91 | 5 | 0 | 0 | DL,OO |
| Feb 2025 | 78 | 21 | 1 | 0 | OO,DL |
| Jan 2025 | 88 | 11 | 0 | 0 | DL,OO |
| Dec 2024 | 88 | 11 | 0 | 0 | DL,OO |
| Nov 2024 | 85 | 4 | 1 | 0 | OO,DL |
| Oct 2024 | 88 | 5 | 0 | 0 | OO,DL |
| Sep 2024 | 81 | 4 | 1 | 0 | OO,DL |
| Aug 2024 | 88 | 9 | 1 | 0 | DL,OO |
| Jul 2024 | 91 | 7 | 3 | 0 | DL,OO |
| Jun 2024 | 89 | 10 | 0 | 0 | DL,OO |
| May 2024 | 88 | 13 | 0 | 0 | DL,OO |
| Apr 2024 | 86 | 8 | 0 | 0 | DL,OO |
| Mar 2024 | 88 | 12 | 0 | 0 | DL,OO |
| Feb 2024 | 78 | 12 | 0 | 0 | DL,OO |
| Jan 2024 | 87 | 14 | 0 | 0 | DL,OO |
Cancellation Rate
0.6%
12 of 2,112 flights
Diversion Rate
0.0%
0 of 2,112 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
BIL - Billings
Full on-time, delay-cause, and seasonal performance for Billings, MT.
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 BIL 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 BIL–SLC.
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What the Data Says About BIL to SLC
Billings to Salt Lake City (BIL to SLC) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 91.5% on-time rate across 6,399 flights, with delays that do happen averaging 94.1 minutes. The corridor runs roughly 387 miles and is served by 3 carriers. Over the most recent 24 months, 12 of 2,112 flights were cancelled (0.6%) and 0 diverted (0.0%).
The monthly split is wide on this route: Sep 2025 posted the strongest performance at 98% on-time, while Feb 2025 came in at just 73% - a 25-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.