Route · BOS → SLC · 2020–2025 BTS data
Boston to Salt Lake City
The BOS–SLC corridor (Boston, MA → Salt Lake City, UT) runs ahead of the national average, served by 3 carriers across roughly 2,105 miles.
Data updated 2026-06-13
- 81.8%
- On-time
- +2.8 pts
- vs US avg
- 76 min
- Delay when late
- 6,672
- Flights
Cancelled
0.5%
Best Month
Feb 2024 90%
Worst Month
Jun 2024 64%
Distance
2,105 mi
Carriers
3
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 107 | 36 | 2 | 0 | DL,B6 |
| Nov 2025 | 97 | 17 | 0 | 0 | B6,DL |
| Oct 2025 | 92 | 18 | 0 | 1 | DL |
| Sep 2025 | 92 | 11 | 0 | 0 | DL,B6 |
| Aug 2025 | 116 | 18 | 0 | 2 | B6,DL |
| Jul 2025 | 123 | 30 | 2 | 0 | B6,DL |
| Jun 2025 | 109 | 23 | 0 | 0 | B6,DL |
| May 2025 | 93 | 12 | 0 | 0 | DL |
| Apr 2025 | 90 | 17 | 0 | 0 | DL |
| Mar 2025 | 151 | 34 | 1 | 1 | B6,DL |
| Feb 2025 | 96 | 25 | 0 | 1 | B6,DL |
| Jan 2025 | 83 | 10 | 1 | 0 | B6,DL |
| Dec 2024 | 88 | 23 | 0 | 0 | B6,DL |
| Nov 2024 | 87 | 11 | 0 | 1 | B6,DL |
| Oct 2024 | 112 | 11 | 1 | 0 | DL,B6 |
| Sep 2024 | 114 | 14 | 0 | 0 | B6,DL |
| Aug 2024 | 124 | 32 | 0 | 0 | B6,DL |
| Jul 2024 | 122 | 33 | 5 | 0 | B6,DL |
| Jun 2024 | 120 | 43 | 0 | 0 | B6,DL |
| May 2024 | 124 | 21 | 0 | 0 | B6,DL |
| Apr 2024 | 120 | 25 | 1 | 0 | B6,DL |
| Mar 2024 | 117 | 20 | 0 | 1 | B6,DL |
| Feb 2024 | 84 | 8 | 0 | 0 | B6,DL |
| Jan 2024 | 87 | 18 | 0 | 1 | B6,DL |
Cancellation Rate
0.5%
13 of 2,548 flights
Diversion Rate
0.3%
8 of 2,548 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
BOS - Boston
Full on-time, delay-cause, and seasonal performance for Boston, MA.
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 BOS 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 BOS–SLC.
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What the Data Says About BOS to SLC
6,672 tracked flights put the BOS to SLC pairing (Boston to Salt Lake City) at a 81.8% on-time rate, squarely in line with the wider network. Delays that do occur run 75.7 minutes on average. Across the 2,105-mile route and its 3 carriers, the trailing 24 months show 0.5% cancelled and 0.3% diverted (2,548 flights sampled).
The monthly split is wide on this route: Feb 2024 posted the strongest performance at 90% on-time, while Jun 2024 came in at just 64% - a 26-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.