Best Time to Fly SLC to TWF: On-Time Stats by Hour & Airline
Salt Lake City International → Joslin Field - Magic Valley Regional
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 92.9% of Salt Lake City (SLC) to Twin Falls (TWF) flights arrived on time (831 scheduled flights). That is 15.2 points above the national average of 77.6%.
SkyWest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Saturday was the most reliable day (95% on time) and December the worst month (87%).
The cancellation rate was 0.5% (US average 1.8%).
SLC to TWF on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlines | 92.9% | 89 min | 0.5% | 831 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SLC to TWF
On-time arrival % by scheduled departure hour (local time), 1,528 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 9am–10am | 93.1% | 0.0% | 131 |
| 11am–12pm | 88.2% | 0.0% | 273 |
| 1pm–2pm | 92.4% | 0.3% | 369 |
| 2pm–3pm | Limited data | 24 | |
| 3pm–4pm | Limited data | 12 | |
| 4pm–5pm | Limited data | 6 | |
| 5pm–6pm | 91.2% | 0.0% | 34 |
| 8pm–9pm | 93.9% | 0.0% | 33 |
| 9pm–10pm | 94.4% | 0.3% | 646 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SLC to TWF
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | Limited data | 24 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 90.4% | -2.2 pts | 0.0% | 52 |
| Summer peak (Jun 15 - Aug 15) | 93.2% | +0.6 pts | 0.0% | 280 |
| All other days | 92.6% | — | 0.3% | 1,172 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).