"Hi-Fly" (also sometimes spelled "Hi Fly" or "High Fly") is one of the best known compositions by pianist Randy Weston, written in the 1950s and inspired by his experience of being 6 feet 8 inches tall, "and how the ground looks different to you than everybody else".
 Since first being recorded on 1958's "New Faces at Newport", "Hi-Fly" appears on several other albums by Weston, including "Live at the Five Spot" (1959), "Niles Littlebig" (1969), "Tanjah" (1973), "Perspective" (with Vishnu Wood, 1976), "Rhythms and Sounds" (1978), "Earth Birth" (1995), "Zep Tepi" (2005), and "The Storyteller" (2009).
Braathens (until 1998 known as Braathens SAFE) was a Norwegian scheduled and charter airline that operated from 1946 to 2004.
 The airline used 53 airports serving 50 destinations, 23 of which were in Norway and 6 in Sweden.
 Braathens provided international services to 24 airports serving 22 cities in 17 countries.
 Seven of these cities are in Asia, the rest in Europe.
 In addition, Braathens served numerous destinations as both a regular and an ad-hoc charter airline.
 Braathens' main hubs were Oslo Airport, Fornebu (1949–98), Oslo Airport, Gardermoen (1998–2007) and Stockholm Arlanda Airport (1997–99).
 The main technical base was at Stavanger Airport, Sola.
Hi Fly Malta is a Maltese charter airline based at Malta International Airport and a subsidiary of the Portuguese Hi Fly.
Comlux - The Aviation Group is a corporate charter airline based in Switzerland, with subsidiaries under a separate AOC in Malta, Aruba and Kazakhstan, and regional branches in Russia, the United States, Bahrain and Hong Kong.
 Comlux holds three AOCs: one in Malta, one in Aruba and one in Kazakhstan.
 They also used to hold one in Switzerland.
MN Aviation, Inc., doing business as MN Aviation Services, is a Puerto Rican Air Charter airline located at the Luis Muñoz Marín International Airport in San Juan.
 The airline was founded in 1993.
Primaris Airlines was an American charter airline located in Enterprise, Nevada, in the United States.
 It operated domestic and international services.
 Its main base was McCarran International Airport, Las Vegas.
Euralair was a charter airline based in France.
 Euralair was founded in 1964 as an air-taxi and executive charter company.
 In 1966 it became charter airline and operated its first charter flights in 1968 when it received the first Fokker F-27 (F-BRHL) on November 11, 1968 and the second (F-BRQL) on October 15, 1969; the last one sold to the Swiss company Belair (as HB-AAZ) in June 1973.
 In order to develop its charter activity, on November 1971 Euralair bought from Austrian Airline the first Sud Aviation Caravelle VIR (F-BSEL) and in 1973 the second (F-BTDL).
Canada 3000 Inc. was a Canadian discount charter airline offering domestic and international flights.
 It was the largest charter airline in the world at the time of its operation, with over 90 destinations worldwide, although it changed to scheduled service in 2000 after the Canadian Airlines and Air Canada merger.
 Canada 3000 competed with Air Canada, WestJet, and fellow charter airline Air Transat.
 In November 2001, the airline went out of business after a sharp decline in revenues following the September 11, 2001, terrorist attacks in the United States.
 There have been several attempts to restart the airline since then.
 The airline was headquartered in Etobicoke in the west-end of Toronto, Ontario.
Hi Fly is a Portuguese charter airline headquartered in Lisbon.
Air X Charter is an airline based in Malta, offering airline charter services to destinations on-demand.
 The company is headquartered in Malta, and has its base of operations located at Malta International Airport.

Question: Hi Fly Malta is a subsidiary of a charter airline located in what city?
Answer: Lisbon