Joslin Field Magic Valley Regional Airport (TWF): Delays & On-Time Performance
Data through July 2026
Joslin Field Magic Valley Regional Airport (TWF) runs noticeably smoother than most US airports: 95% of its ~2 daily departures leave on time, 17 points above the national average, with an average departure delay of just 6 minutes. 1 airlines fly from Twin Falls, ID to 1 destinations.
- Departures on-time
- 95%
- left <15 min late
- Avg dep delay
- 6 min
- Arrivals on-time
- 92%
- Cancelled
- 0.3%
- Destinations
- 1
- nonstop
- Airlines
- 1
Plan your departure from TWF
The choices most likely to improve your odds, based on this airport’s historical record.
- Best departure time
- Around 6 a.m.
- 98% on-time
- Best day to fly
- Saturday
- 97% on-time
- Cancellation risk
- 0.3%
- below the US average
Monthly on-time trend
Best time of day to depart from TWF
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 96% | 7 min |
| Tuesday | 95% | 5 min |
| Wednesday | 96% | 4 min |
| Thursday | 91% | 8 min |
| Friday | 94% | 5 min |
| Saturdaybest | 97% | 4 min |
| Sunday | 92% | 9 min |
Busiest routes from TWF
| Route | Flights/12mo | On-time | Avg delay |
|---|---|---|---|
| TWF → SLC (Salt Lake City) | 831 | 94% | 6 min |
Where flights into TWF come from
| Route | Flights/12mo | On-time | Avg delay |
|---|---|---|---|
| SLC (Salt Lake City) → TWF | 831 | 92% | 7 min |
What causes delays at TWF
Share of total delay minutes by cause, as reported by carriers to the US DOT, weighted across routes departing TWF.
- Airline operations81%
- National airspace system2%
- Weather18%
Alternative airports near Twin Falls
Other airports within 120 miles, compared on departure reliability.
| Airport | Distance | On-time departures | Avg delay |
|---|---|---|---|
| SUN — Friedman Memorial Airport | 71 mi | 87% | 16 min |
| BOI — Boise Air Terminal/Gowen Field | 115 mi | 85% | 11 min |
Compare the airport-level record first, then check the exact route you plan to book.
Frequently asked questions
- How often are flights delayed at TWF?
- 5% of departures from Joslin Field Magic Valley Regional Airport left 15+ minutes late between 2024-07 and 2026-07, with an average departure delay of 6 minutes. The national on-time average over the same period was 78%.
- What is the best time of day to depart from TWF?
- Flights scheduled around 6 a.m. depart on time 98% of the time at TWF, versus 89% around 1 p.m.. Booking before noon is the usual rule of thumb here.
- How often are flights cancelled at TWF?
- 0.3% of scheduled departures from TWF were cancelled in this period, compared with a national rate of 1.6%.
Popular route pages from this airport
Related guides
Based on 1,590 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.