San Francisco is a large city located at the western portion of USA. The city has very high ratings that often exceed 300 or more. The tourism ratings are usually higher than the business ratings.
The default airport here is San Francisco International Airport (SFO).
High ratings make this place a very attractive place for many players to open a hub here and fly to as many destinations as possible. This results in intense competition that beginners may not be able to handle very well despite San Francisco's ability to sustain routes with such fierce price wars. Besides that, San Francisco's position is slightly isolated as although flights to cities in the eastern part of US (e.g. Atlanta and New York) and South America (e.g. Lima and Buenos Aires). There are few cities to connect to to the west of the city. However, this becomes small issue when long ranged aircraft becomes available and flights to Asian (e.g. Tokyo and Beijing) and European (e.g. London and Moscow) cities become possible. Still, beginners are advised not to start in San Francisco. The best routes out of San Francisco are often the monopolised routes to medium sized cities compared to competition laden routes to large cities as the former can generate a higher income than the latter. Examples of medium sized cities include Tampa, Montreal, Cancun and Kingston.
San Francisco International Airport often will achieve maximum slot usage within 15 to 20 years into the game. This makes the city in need of a second airport soon afterwards and it can be built by any player or the national government. Buying over the airport from the national government is a great idea and should be pursued as soon as a player have sufficient funds and credits to do so, since the level 8 airport will give whoever owns it massive profits. Building the second (sometimes the third) airport, however, is best left for the national government as the airport will unlikely attain a status beyond a level 4 due to the amount of routes that can be made is not as abundant as the cities in Europe.
When flying to large cities, with or without competition, large capacity aircraft with high satisfaction are ideal choices to service the route. Examples include the Boeing 747, Airbus A380 and McDonnell Douglas MD-11. Flights to small and medium sized cities should use medium capacity planes like the Boeing 767, Airbus A300 and Ilyushin IL-86. Appropriate long range planes for routes to Asian and European cites include the Airbus A340, Boeing 777 and McDonnell Douglas DC-10. Small capacity planes should be avoided in order to minimise the number of planes servicing a route. This helps to lessen depreciation on an airline.