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Route · BTM → SLC · 2020–2025 BTS data

Butte to Salt Lake City

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), BTM to SLC (Butte to Salt Lake City) ranks #3184 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

91.9%
On-time
+12.9 pts
vs US avg
103 min
Delay when late
3,311
Flights
#3184 of 4927
Corpus placement

Cancelled

0.0%

Best Month

Oct 2024 100%

Worst Month

Jun 2024 82%

Distance

358 mi

Carriers

1

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Oct 2025 31 1 0 0 OO
Sep 2025 30 2 0 0 OO
Aug 2025 31 0 0 0 OO
Jul 2025 31 4 0 0 OO
Jun 2025 30 1 0 0 OO
May 2025 30 0 0 0 OO
Dec 2024 58 3 0 0 OO
Nov 2024 56 4 0 0 OO
Oct 2024 57 0 0 0 OO
Sep 2024 58 3 0 0 OO
Aug 2024 62 2 0 0 OO
Jul 2024 62 6 0 0 OO
Jun 2024 56 10 0 0 OO
May 2024 58 2 0 0 OO
Apr 2024 55 3 0 0 OO
Mar 2024 58 6 0 0 OO
Feb 2024 54 2 0 0 OO
Jan 2024 56 6 0 0 OO
Dec 2023 56 2 0 0 OO
Nov 2023 56 1 0 0 OO
Oct 2023 57 2 0 0 OO
Sep 2023 56 2 0 0 OO
Aug 2023 57 2 0 0 OO
Jul 2023 58 1 0 0 OO

BTM–SLC seasonal on-time pattern

Best: May (95.3%) · weakest: July (88.7%)

88%90%92%94%96% JanFebMarAprMayJunJulAugSepOctNovDec 89.8%

Strongest calendar month

May

95.3% on-time · ~46 flights/mo

Busiest calendar month

December

~57 flights/mo avg

Weakest calendar month

July

88.7% on-time · ~50 flights/mo

Cancellation Rate

0.0%

0 of 1,213 flights

Diversion Rate

0.0%

0 of 1,213 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

BTM - Butte

Full on-time, delay-cause, and seasonal performance for Butte, MT.

BTM on-time profile

SLC - Salt Lake City

Full on-time, delay-cause, and seasonal performance for Salt Lake City, UT.

SLC on-time profile

Compare the two airports

See BTM and SLC side by side on delays, cancellations, and reliability.

Compare BTM vs SLC

What the Data Says About BTM to SLC

Butte to Salt Lake City (BTM to SLC) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 91.9% on-time rate across 3,311 flights, with delays that do happen averaging 102.8 minutes. The corridor runs roughly 358 miles and is served by 1 carrier. Over the most recent 24 months, 0 of 1,213 flights were cancelled (0.0%) and 0 diverted (0.0%).

The monthly split is wide on this route: Oct 2024 posted the strongest performance at 100% on-time, while Jun 2024 came in at just 82% - a 18-point swing worth factoring into travel timing.

On the multi-year calendar, BTM–SLC peaks in May at 95.3% on-time while December carries the heaviest traffic (~57 flights per month) ; the softest month is July at 88.7%, a 6.6-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does BTM to SLC rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, BTM to SLC ranks #3184 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from BTM to SLC? ▼
Flights from Butte to Salt Lake City have a 91.9% on-time rate based on 3,311 flights. The average delay is 102.8 minutes. The best recent month was Oct 2024 with 100% on-time.
What is the cancellation rate for BTM to SLC? ▼
Over the last 24 months, 0.0% of flights on this route were cancelled (0 of 1,213 flights) and 0.0% were diverted.
How far is the flight from BTM to SLC? ▼
The flight distance from Butte (BTM) to Salt Lake City (SLC) is approximately 358 miles. This route is served by 1 carrier.
When is the best time to fly from BTM to SLC? ▼
The best recent month for on-time performance was Oct 2024 (100% on-time). The worst was Jun 2024 (82% on-time). Consider booking during months with historically better performance.

Airports on this route

BTM Airport

Butte
SLC Airport

Salt Lake City
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.

Using BTM–SLC data

BTM–SLC runs 12.9 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare BTM and SLC airport profiles: delay causes and top routes differ even on the same corridor. BTM airport
  • If your dates flex, May (95.3% on-time) beats July (88.7%) on this corridor. Seasonal chart
  • 4 other routes post a similar 91.9% on-time rate; compare before you commit to this pairing. Similar routes

On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

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.