Singapore Changi Airport (IATA: SIN, ICAO: WSSS) , or simply Changi Airport, is the primary civilian airport for Singapore, and one of the largest transportation hubs in Southeast Asia.
 It is currently rated the World's Best Airport by Skytrax, for the fifth consecutive year (Skytrax's World's Best Airport 2013–2017) and is one of the world's busiest airports by international passenger and cargo traffic.
 The airport is located in Changi, at the eastern end of Singapore, approximately 17.2 km northeast from Marina Bay (Singapore's Downtown Core), on a 13 km2 site.
 It is operated by Changi Airport Group and it is the home base of Singapore Airlines, Singapore Airlines Cargo, SilkAir, Scoot, Jetstar Asia Airways and BOC Aviation.
Malaysia–Singapore Airlines (MSA) came into being in 1966 as a result of a joint ownership of the airline by the governments of Malaysia and Singapore.
 The airline ceased operations after 6 years in 1972 when both governments decided to set up their own national airlines.
 Hence from that year onwards, "Malaysian Airline System", now called Malaysia Airlines, and Singapore Airlines were formed.
Scoot Tigerair Pte Ltd. (operating as Scoot) is a Singaporean low-cost long-haul airline owned by Singapore Airlines through its subsidiary Budget Aviation Holdings.
 It launched flights in June 2012 on medium and long-haul routes from Singapore, predominantly to China and India.
 Initially, Scoot's fleet consisted of Boeing 777 aircraft obtained from Singapore Airlines.
 The airline began to transition its fleet to Boeing 787 Dreamliner aircraft from 2015.
 On 25 July 2017, Tigerair was officially merged into Scoot using Tigerair's air operator's certificate (AOC) but retaining the 'Scoot' brand.
 With the change of AOC, the airline's IATA code was changed from TZ to TR, previously used by Tigerair.
 Its head office is at Singapore Changi Airport.
Singapore Airlines, based at Singapore Changi Airport, is the flag carrier of the Republic of Singapore.
 Ranking amongst the top 15 air carriers worldwide in terms of the scale of revenue-passengers-kilometres, and 10th in the world for the volume of international passengers carried, Singapore Airlines is one of the largest airline businesses in Asia.
Singapore Airlines Cargo freighters serve 19 destinations in 13 countries as of April 2017.
 As SIA Cargo also manages the cargo holds of all Singapore Airlines, SilkAir, Scoot and NokScoot aircraft, the company additionally offers cargo product services to all destinations on the Singapore Airlines Group network.
The Singapore Flying College (Abbreviation: SFC) is a flight school based in Singapore.
 Established in 1988 under the Singapore Airlines Group, it is the training school for ab-initio cadet pilots with Singapore Airlines, SilkAir and Singapore Airlines Cargo.
Singapore Airlines Cargo (abbreviated as SIA Cargo) is a cargo airline based in Singapore.
 It is a subsidiary of Singapore Airlines and was incorporated in 2001.
 SIA Cargo operates seven dedicated freighter aircraft and also manages the bellyhold of all NokScoot, Singapore Airlines, Scoot and SilkAir aircraft.
 Its head office is on the fifth floor of the SATS Airfreight Terminal 5 at Singapore Changi Airport.
Singapore Airlines Flight 006 (SQ006/SIA006) was a scheduled Singapore Airlines passenger flight from Singapore Changi Airport to Los Angeles International Airport via Chiang Kai-shek International Airport (now Taiwan Taoyuan International Airport) in Taipei, Taiwan.
 On 31 October 2000, at 23:17 Taipei local time (15:17 UTC), the Boeing 747-412 operating the flight attempted to take off from the wrong runway at Chiang Kai-shek International Airport during a typhoon.
 The aircraft crashed into construction equipment on the runway, killing 83 of the 179 occupants aboard.
 As of 2014, the accident is the third-deadliest on Taiwanese soil.
 It is also the first and only Singapore Airlines crash to result in fatalities.
Continental Airlines flew to 62 domestic destinations and 78 international destinations in 39 countries at the time of its merger with United Airlines.
 This list does not include cities only served by Continental Express and Continental Connection.
Singapore Airlines flies to 62 international destinations (including seasonal destinations) in 30 countries on five continents (as of Nov 2016) from its primary hub in Singapore.
 India and Australia are served by highest number of destinations with 6 each.
 Most Popular Destination is Hong Kong with 7 Daily Direct Flights.

Question: Question: How many countries have Singapore Airlines flew been to?
Answer: 30 countries