Denver is a large city located in USA, the city has high business and tourism ratings ranging from 200-300.
The default airport name is Denver Int'l Airport (DEN).
Denver is one of the highest ranked cities in USA. Because of this the city attracts many players, creating heavy competition. As such, starting here is not recommended. Denver has an excellent location allowing it to connect to not only American cities but also those in Western Europe. The city can sustain the heavy competition it often attracts, however it is more profitable to operate monopoly routes to mid-sized cities.
Denver Int'l Airport will usually attain maximum slot usage within the first 10 to 15 years into the game. This makes the airport a great buy, especially during the Economic Crisis of the late 70s. Despite this, additional airports are a bit risky as they could reach Level 6 or 7, but could also be stuck at Level 4 or 5, therefore making them a risky move.
The best airport to operate are large airplanes such as Airbus A380 or Boeing 747, or McDonnell Douglas DC-10 to generate huge profits. To mid sized cities use medium planes such as the Boeing 757, Airbus A330 or Lockheed L-1011. Small planes are not recommended due to value depreciation.