The West Kootenay Regional Airport, (Castlegar Airport) (IATA: YCG, ICAO: CYCG) is a small regional airport located 2 NM south southeast of Castlegar, British Columbia, Canada.
 It is owned and operated by the City of Castlegar, and has a 15317 sqft passenger terminal.
 Due to the mountainous terrain impinging on both runway approaches, there is no possibility of a straight-in approach.
 The airport is therefore certified for day operations only, and the glideslope on approach is set to a steep 5.0° rather than the standard 3.0°.
 The instrument approaches to Castlegar are considered among the most challenging of any in use at a commercial airport in North America.
 As of 2011, the Dash-8s serving the airport required minimums of 3400 foot cloud ceilings and three miles visibility (Air Canada Jazz adds 100 feet and one mile to these minimums).
Carlisle Lake District Airport (IATA: CAX, ICAO: EGNC) is a small regional airport located 5 NM east northeast of Carlisle, Cumbria, England.
Bagan Sungai Burong is a small fishing village about 50 km west from Teluk Intan, in the state of Perak, Malaysia.
 It is situated south-west of Ipoh city, the state capital.
Irthington is a village and civil parish within the City of Carlisle district in Cumbria, England, situated to the north-east of Carlisle Lake District Airport.
 The population in 2011 was 860 according to the 2011 census.
Narrandera Airport (also known as Narrandera-Leeton Airport) (IATA: NRA, ICAO: YNAR) is a small regional airport in the local government area of Narrandera in the Riverina region of New South Wales, Australia.
 The airport is located 4 NM northwest of Narrandera along Irrigation Way.
 The airport services the towns of Leeton and Narrandera as it is located between the two towns.
Oristano-Fenosu Airport is a small regional airport located in the central western Sardinia, Italy.
 (IATA: FNU, ICAO: LIER) next to the town of Oristano.
 The Airport is entitled at the brave and famous oristanianman Trasvolatori Ernesto Campanelli, is located at about 3 km east of Oristano, in the farming village called Fenosu, on the road N. 57 - Oristano- Palmas Arborea.
 It is lapped by Highway 131, the island's most important road artery, and occupies a central position.
Trollhättan-Vänersborg Airport (IATA: THN, ICAO: ESGT) is a small regional airport situated outside Trollhättan, Sweden.
 Braathens Regional Airlines (BRA) has its corporate head office on the airport property.
Newara is a village and a panchayat in the weir tehsil of the Bharatpur district in the state of Rajasthan, India.
 It is situated south-west of Bharatpur at a distance of about 37 km.
 Newara is situated 5 km away from the NH-11 road, between Jaipur and Agra.
Flinders Island Airport (IATA: FLS, ICAO: YFLI) is a small regional airport located 2 NM northwest of Whitemark on Flinders Island off the north-east coast of Tasmania, Australia.
 The airport is owned and operated by the Flinders Council.
 The airport site has a total area of approximately 134 hectares.
 Access to the airport is off Palana Road.
 The primary aviation facilities at Flinders Island Airport consist of two sealed runways, a sealed taxiway, a sealed apron, a grassed apron and a fuel storage facility.
 Adjacent to the sealed apron is a passenger terminal building with an associated car parking area.
 There is only one small hangar on the site at present.
 The primary use of Flinders Island Airport is for Regular Public Transport (RPT) services operated by Sharp Airlines which offers services to and from Melbourne and Launceston.
 The airport is also used for charter and freight services, emergency services and private/recreational flying.
Maryborough Airport (IATA: MBH, ICAO: YMYB) is located approximately 3 km north of the town centre.
 The airport serves as a small regional airport serving Maryborough and Rainbow Bay.
 However, increasing competition with Hervey Bay Airport has led to a decrease in commercial air traffic.

Question: What small regional airport is situated south-west to the village of Irthington?
Answer: Carlisle Lake District Airport