# Joslin Field Magic Valley Regional Airport (TWF / KTWF)

**Joslin Field Magic Valley Regional Airport** (IATA: TWF, ICAO: KTWF) is a medium airport in Twin Falls, Idaho, United States. It opened in Feb 1948. It has 2 runways; the longest is 8,704 ft (2,653 m). In 2025 it handled 69 thousand passengers.

Web page: https://dromopedia.com/airports/ktwf

## At a glance

- IATA / ICAO: TWF / KTWF
- FAA: TWF
- Type: Medium airport
- Serves: Twin Falls, Idaho, United States
- Opened: Feb 1948
- Elevation: 4,153 ft / 1,266 m
- Coordinates: 42.4818, -114.4880
- Runways: 2
- Longest runway: 8,704 ft / 2,653 m
- Instrument procedures: 6 approaches, 1 departure
- Passengers: 69,210 (2025)
- Time zone: UTC-7/-6 · America/Boise
- Website: http://www.tfid.org/?NID=136
- Wikipedia: https://en.wikipedia.org/wiki/Magic_Valley_Regional_Airport (6 languages)
- Wikidata: https://www.wikidata.org/wiki/Q6730879
- Weather station: KTWF
- Ident: KTWF

## Timeline

- Feb 1948: Joslin Field Magic Valley Regional Airport opens.

## Runways

| Ident | Length | Width | Surface | True headings | Lighted |
| --- | --- | --- | --- | --- | --- |
| 08/26 | 8,704 ft / 2,653 m | 150 ft / 46 m | Asphalt | 091° / 271° | yes |
| 12/30 | 3,224 ft / 983 m | 75 ft / 23 m | Asphalt | 136° / 316° |  |

- 12/30 slopes 1.3%: threshold 12 at 4,107 ft / 1,252 m, threshold 30 at 4,148 ft / 1,264 m.
- FAA airport diagram: https://aeronav.faa.gov/d-tpp/2611/00885AD.PDF

## Passengers per year

| Year | Passengers | Source |
| --- | --- | --- |
| 2015 | 72,247 | BTS T-100 Segment |
| 2016 | 81,656 | BTS T-100 Segment |
| 2017 | 94,514 | BTS T-100 Segment |
| 2018 | 96,410 | BTS T-100 Segment |
| 2019 | 105,585 | BTS T-100 Segment |
| 2020 | 48,210 | BTS T-100 Segment |
| 2021 | 71,904 | BTS T-100 Segment |
| 2022 | 35,464 | BTS T-100 Segment |
| 2023 | 42,981 | BTS T-100 Segment |
| 2024 | 66,766 | BTS T-100 Segment |
| 2025 | 69,210 | BTS T-100 Segment |

## Routes

2 destinations in 1 country. From the airport's Wikipedia article.

### Year-round (2)

- [SLC](https://dromopedia.com/airports/kslc.md) Salt Lake City International Airport · United States · 175 mi / 281 km · Delta Connection
- [LAS](https://dromopedia.com/airports/klas.md) Harry Reid International Airport · United States · 444 mi / 714 km · Breeze Airways

## Airlines

The figure is how many destinations each airline flies from TWF, as the routes above have them. Hubs from Wikidata.

### Passenger (2)

- MX [Breeze Airways](https://dromopedia.com/airlines/breeze-airways) · 1
- [Delta Connection](https://dromopedia.com/airlines/delta-connection) · 1

## Rankings

Ranked among 48,075 open airports; = marks a shared place.

| Measure | Value | World | Region | Country |
| --- | --- | --- | --- | --- |
| Passengers | 69K (2025) | #1,948 of 3,974 | #437 in North America | #295 in US |
| Longest runway | 8,704 ft / 2,653 m | #1,979 of 29,858 | #438 in North America | #324 in US |
| Elevation | 4,153 ft / 1,266 m | =3,272 of 43,403 | =1,757 in North America | =1,397 in US |
| Age | Opened 1948 | =3,279 of 15,079 | =2,168 in North America | =2,110 in US |
| Runways | 2 | =715 of 29,978 | =435 in North America | =391 in US |

## Radio frequencies

| Type | Description | MHz |
| --- | --- | --- |
| A/D | TWIN FALLS APP/DEP | 126.700 |
| ASOS | ASOS | 135.025 |
| CTAF | CTAF | 118.200 |
| GND | TWIN FALLS GND | 121.700 |
| RDO | BOISE RDO | 122.250 |
| TWR | TWIN FALLS TWR | 118.200 |
| UNIC | UNICOM | 122.950 |

## Nearby airports

- [BYI](https://dromopedia.com/airports/kbyi.md) Burley Municipal Airport · 37 mi / 59 km
- [SUN](https://dromopedia.com/airports/ksun.md) Friedman Memorial Airport · 71 mi / 115 km
- [MUO](https://dromopedia.com/airports/kmuo.md) Mountain Home Air Force Base · 80 mi / 129 km

## Sources

- [BTS T-100 Segment](https://www.transtats.bts.gov/Tables.asp?QO_VQ=EEE&QO_anzr=Nv4%20Pn44vr45): US traffic: Bureau of Transportation Statistics, T-100 Segment (Public Domain (US Government))
- [FAA NASR](https://www.faa.gov/air_traffic/flight_info/aeronav/aero_data/NASR_Subscription/): US airport data: FAA National Airspace System Resources (Public Domain (US Government))
- [NOAA Aviation Weather Center](https://aviationweather.gov/data/api/): Weather data: NOAA Aviation Weather Center (Public Domain (US Government))
- [OurAirports](https://ourairports.com/data/): Airport data from OurAirports (Public Domain)
- [Wikidata](https://www.wikidata.org): Structured data from Wikidata (CC0 1.0)
- [Wikipedia: “Magic Valley Regional Airport”](https://en.wikipedia.org/w/index.php?title=Magic_Valley_Regional_Airport&oldid=1367030905), revision of 31 Jul 2026 (CC BY-SA 4.0)
- [timezone-boundary-builder](https://github.com/evansiroky/timezone-boundary-builder): Time zone boundaries © OpenStreetMap contributors, timezone-boundary-builder (ODbL 1.0)
- Every figure with its source: https://dromopedia.com/airports/ktwf/data