Route · TWF → SLC · 2020–2025 BTS data
Twin Falls to Salt Lake City
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), TWF to SLC (Twin Falls to Salt Lake City) ranks #2869 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 92.9%
- On-time
- +13.9 pts
- vs US avg
- 108 min
- Delay when late
- 4,062
- Flights
- #2869 of 4927
- Corpus placement
Cancelled
0.1%
Best Month
Sep 2025 100%
Worst Month
Feb 2025 82%
Distance
175 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 59 | 3 | 0 | 0 | OO |
| Nov 2025 | 57 | 3 | 0 | 0 | OO |
| Oct 2025 | 61 | 1 | 0 | 0 | OO |
| Sep 2025 | 60 | 0 | 0 | 0 | OO |
| Aug 2025 | 56 | 1 | 0 | 0 | OO |
| Jul 2025 | 62 | 3 | 0 | 1 | OO |
| Jun 2025 | 60 | 2 | 0 | 0 | OO |
| May 2025 | 62 | 1 | 0 | 0 | OO |
| Apr 2025 | 60 | 3 | 0 | 0 | OO |
| Mar 2025 | 62 | 4 | 0 | 0 | OO |
| Feb 2025 | 56 | 10 | 0 | 0 | OO |
| Jan 2025 | 61 | 4 | 0 | 0 | OO |
| Dec 2024 | 57 | 4 | 0 | 0 | OO |
| Nov 2024 | 46 | 6 | 0 | 0 | OO |
| Oct 2024 | 53 | 2 | 0 | 0 | OO |
| Sep 2024 | 56 | 2 | 0 | 0 | OO |
| Aug 2024 | 62 | 4 | 0 | 0 | OO |
| Jul 2024 | 62 | 7 | 0 | 0 | OO |
| Jun 2024 | 60 | 4 | 0 | 0 | OO |
| May 2024 | 62 | 5 | 0 | 0 | OO |
| Apr 2024 | 60 | 6 | 0 | 0 | OO |
| Mar 2024 | 62 | 4 | 0 | 0 | OO |
| Feb 2024 | 58 | 10 | 0 | 0 | OO |
| Jan 2024 | 62 | 5 | 2 | 0 | OO |
TWF–SLC seasonal on-time pattern
Best: September (95.5%) · weakest: February (86.2%)
Strongest calendar month
September
95.5% on-time · ~63 flights/mo
Busiest calendar month
February
~71 flights/mo avg
Weakest calendar month
February
86.2% on-time · ~71 flights/mo
Cancellation Rate
0.1%
2 of 1,416 flights
Diversion Rate
0.1%
1 of 1,416 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
TWF - Twin Falls
Full on-time, delay-cause, and seasonal performance for Twin Falls, ID.
TWF 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 TWF and SLC side by side on delays, cancellations, and reliability.
Compare TWF vs SLCSimilar routes
Other BTS-tracked routes with comparable performance or trip length to TWF–SLC.
Routes with a similar on-time rate
What the Data Says About TWF to SLC
Twin Falls to Salt Lake City (TWF to SLC) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 92.9% on-time rate across 4,062 flights, with delays that do happen averaging 107.8 minutes. The corridor runs roughly 175 miles and is served by 1 carrier. Over the most recent 24 months, 2 of 1,416 flights were cancelled (0.1%) and 1 diverted (0.1%).
The monthly split is wide on this route: Sep 2025 posted the strongest performance at 100% on-time, while Feb 2025 came in at just 82% - a 18-point swing worth factoring into travel timing.
On the multi-year calendar, TWF–SLC peaks in September at 95.5% on-time while February carries the heaviest traffic (~71 flights per month) ; the softest month is February at 86.2%, a 9.3-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does TWF to SLC rank among US routes by traffic? ▼
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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 TWF–SLC data
TWF–SLC runs 13.9 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.
- Compare TWF and SLC airport profiles: delay causes and top routes differ even on the same corridor. TWF airport
- If your dates flex, September (95.5% on-time) beats February (86.2%) on this corridor. Seasonal chart
- 4 other routes post a similar 92.9% 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.