Joslin Field - Magic Valley Regional (TWF) Delays and On-Time Departures
Twin Falls, ID · ranked 1st of 333 airports for on-time departures
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, Twin Falls (TWF) had 831 scheduled departures and 96.4% of them left on time (US average 77.4%).
That ranks 1st of 333 US airports tracked on this site, with 0.5% of departures cancelled.
Over 24 months, Tuesday was the most reliable day (98% on time) and February the worst month (91%).
Best time of day to fly out of Twin Falls (TWF)
On-time departure % by scheduled departure hour (local time), last 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 97.9% | 0.3% | 725 |
| 9am–10am | Limited data | 5 | |
| 11am–12pm | 95.4% | 0.0% | 131 |
| 12pm–1pm | Limited data | 23 | |
| 1pm–2pm | 90.4% | 0.0% | 250 |
| 3pm–4pm | 95.1% | 0.5% | 393 |
| 7pm–8pm | Limited data | 1 | |
Airlines at TWF ranked by on-time departures
Last 12 months. Airlines with fewer than 30 departures are marked “limited data”.
| Airline | On-time departures | On-time arrivals | Cancelled | Departures |
|---|---|---|---|---|
| SkyWest Airlines | 96.4% | 95.4% | 0.5% | 831 |
80%+ good 70–79.9% fair <70% poor
Best day to fly out of TWF
On-time departures by day, 24 months.
Best month to fly out of TWF
On-time departures by month, 24 months.
Holiday travel at Twin Falls (TWF)
On-time departures during holiday periods compared with all other days, last 24 months.
| Period | On-time departures | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | Limited data | 24 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 98.1% | +2.6 pts | 0.0% | 52 |
| Summer peak (Jun 15 - Aug 15) | 96.1% | +0.6 pts | 0.0% | 280 |
| All other days | 95.5% | — | 0.3% | 1,172 |
Monthly on-time departure trend at TWF
On-time departure % each month, with the 12-month US average for reference.
Routes from Twin Falls (TWF)
Every route from TWF with its own page, by number of flights (last 12 months, on-time arrivals).
| To | On time | Cancelled | Flights |
|---|---|---|---|
| TWF → Salt Lake City (SLC) | 95.4% | 0.5% | 831 |