Singapore's Changi Airport (SIN) is located around 17 kilometres northeast from the Singapore city centre. The airport has four passenger terminals including a Budget Terminal built for low cost carriers. It is also one of the busiest cargo airports in the world. There are two lounges with 24-hour napping areas including showers, but iff you have any early flight departure, or a lengthy connection betwen flights, there are several hotels in the areas near Singapore International Airport where you can stay overnight, or drop in for a shower and quick nap. Many of the airport area hotels offer a free shuttle service between the hotel and the airport.