Route · GTF → SLC · 2020–2025 BTS data
Great Falls to Salt Lake City
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), GTF to SLC (Great Falls to Salt Lake City) ranks #2122 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
- 89 min
- Delay when late
- 5,902
- Flights
- #2122 of 4927
- Corpus placement
Cancelled
0.2%
Best Month
Jun 2025 99%
Worst Month
Jan 2024 77%
Distance
463 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 90 | 7 | 1 | 0 | OO |
| Nov 2025 | 87 | 7 | 4 | 0 | OO |
| Oct 2025 | 92 | 4 | 0 | 0 | OO |
| Sep 2025 | 90 | 3 | 0 | 0 | OO |
| Aug 2025 | 91 | 8 | 0 | 0 | OO |
| Jul 2025 | 92 | 6 | 0 | 0 | OO |
| Jun 2025 | 90 | 1 | 0 | 0 | OO |
| May 2025 | 93 | 5 | 0 | 0 | OO |
| Apr 2025 | 88 | 7 | 0 | 0 | OO |
| Mar 2025 | 88 | 3 | 0 | 0 | OO |
| Feb 2025 | 78 | 10 | 0 | 0 | OO |
| Jan 2025 | 84 | 9 | 0 | 0 | OO |
| Dec 2024 | 88 | 5 | 0 | 0 | OO |
| Nov 2024 | 83 | 12 | 0 | 0 | OO |
| Oct 2024 | 84 | 4 | 0 | 0 | OO |
| Sep 2024 | 81 | 3 | 0 | 0 | OO |
| Aug 2024 | 88 | 3 | 0 | 0 | OO |
| Jul 2024 | 88 | 3 | 0 | 0 | OO |
| Jun 2024 | 88 | 4 | 0 | 1 | OO |
| May 2024 | 88 | 7 | 0 | 0 | OO |
| Apr 2024 | 86 | 7 | 0 | 0 | OO |
| Mar 2024 | 88 | 7 | 0 | 0 | OO |
| Feb 2024 | 78 | 15 | 0 | 0 | OO |
| Jan 2024 | 83 | 19 | 0 | 0 | OO |
GTF–SLC seasonal on-time pattern
Best: September (94.6%) · weakest: February (88.9%)
Strongest calendar month
September
94.6% on-time · ~89 flights/mo
Busiest calendar month
August
~95 flights/mo avg
Weakest calendar month
February
88.9% on-time · ~71 flights/mo
Cancellation Rate
0.2%
5 of 2,086 flights
Diversion Rate
0.0%
1 of 2,086 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
GTF - Great Falls
Full on-time, delay-cause, and seasonal performance for Great Falls, MT.
GTF on-time profileSLC - Salt Lake City
Full on-time, delay-cause, and seasonal performance for Salt Lake City, UT.
SLC on-time profileCompare the two airports
See GTF and SLC side by side on delays, cancellations, and reliability.
Compare GTF vs SLCOrigin-hub reliability standing
Among GTF's stronger departures
GTF → SLC posts a 91.9% on-time rate, landing in the ≥85% band with 3 of 4 BTS-tracked routes leaving Great Falls. The same hub also shows 1 mid-band and 0 challenged departures · fleet-wide on-time rank #47 of 4927 (highest on-time = #1).
Similar routes
Other BTS-tracked routes with comparable performance or trip length to GTF–SLC.
Routes with a similar on-time rate
What the Data Says About GTF to SLC
Great Falls to Salt Lake City (GTF to SLC) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 91.9% on-time rate across 5,902 flights, with delays that do happen averaging 88.5 minutes. The corridor runs roughly 463 miles and is served by 1 carrier. Over the most recent 24 months, 5 of 2,086 flights were cancelled (0.2%) and 1 diverted (0.0%).
The monthly split is wide on this route: Jun 2025 posted the strongest performance at 99% on-time, while Jan 2024 came in at just 77% - a 22-point swing worth factoring into travel timing.
On the multi-year calendar, GTF–SLC peaks in September at 94.6% on-time while August carries the heaviest traffic (~95 flights per month) ; the softest month is February at 88.9%, a 5.7-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does GTF to SLC rank among US routes by traffic? ▼
How often are flights delayed from GTF to SLC? ▼
What is the cancellation rate for GTF to SLC? ▼
How far is the flight from GTF to SLC? ▼
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Airports on this route
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 GTF–SLC data
GTF–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 GTF and SLC airport profiles: delay causes and top routes differ even on the same corridor. GTF airport
- If your dates flex, September (94.6% on-time) beats February (88.9%) 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.
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.