Singapore being so small means Changi isn't far from real civilisation. In fact, for those living in the Eastern end of Singapore, it's just a few kilometers away. But for most travellers arriving into Singapore, destination is likely to be town. Head out of customs, and ample signage will send you on your way. Here are your options: TaxiTaxis in Singapore are cheap compared to the rest of the developed world, so don't shy away from the idea of getting a taxi to wherever you're headed. Into Town, total fares can vary from $20 up to $35 depending on traffic and time. Typical journey time should be around half an hour, though expect it to take longer at rushhour times (7:00-9:30am and 5pm-8pm), plus during those times there is a surcharge of 35% on the metered fare. Trips starting from the airport are subject to a $3/$5 surcharge depending on time. There is also a 50% surcharge between midnight and 5am, so if you're coming in the early hours be prepared to pay more. Many cabs accept credit cards, though some do not. If you prefer to pay by card, make sure you check before you board – a sticker is often shown on the window. A good way to predict the fare is to use gothere.sg where you can search for “changi airport to wherever” and select taxi from the modes of transport. Remember to set the time to your approximate time of arrival to include surcharges and tolls. Note that you might want to avoid the more expensive Chrysler taxis that have fares that are 50% higher than the others. Simply indicate this to the assistant if directed to one. Other cars, including Mercedes (if you're lucky) cost the same (with a few tens of cents difference in starting fare). If the lines are long, you may want to just take what's given. Large TaxiIf you've got more passengers and/or baggage than will fit in a standard saloon, you might like to consider a Maxi Cab, Space Cab, or Mini Bus. These can be arranged on the spot, or in-advance, and charged fixed fares to any destination. Note that you may be charged for additional stops if you are not all going to the same place. Fares start from a fixed $45 depending on the type of vehicle. More here. Airport ShuttleThere is a shuttle bus from Changi that serves most of the major hotels. The cost is $9 per adult and $6 per child. You'll want to check the details with the Ground Transportation Desk. MRT TrainThe MRT (Mass Rapid Transit) is Singapore's World Class metro network, and it comes into Changi. You'll need to walk about 7-10 minutes, following the signs to the trains. If you'll be in Singapore for a few days and are planning to use public transport, get an EZ-Link card from the ticketing window. It will cost you $12 including $7 of credit (the remaining $5 is a card deposit). If you prefer a single ticket, use the machines, and note that there's a $1 deposit, in addition to the fare, that is refunded when you return the smart card. Note that there are no special child tickets for foreigners, though Children under 0.9m tall travel free. The trip into town will cost around $1.70, and take 35-45 minutes depending on waiting times (typically a few minutes) and where exactly you're going. If you have to change onto another line, you might like to plan your trip in advance; again gothere.sg is a great tool. The last train leaves from Changi Airport MRT station at just after 11:15pm, after which you'll have to chose another option, until about 6am. Note that you will have to change to another train at Tanah Merah Interchange. Despite what the map seems to suggest, trains from Changi Airport stop at that station, where you simply cross the platform and make your way into the city. Airport ShuttleThe Airport Shuttle seems to work well. It is a air conditioned small van with luggage room (the driver lifts the heavy pieces). It leaves SIN every twenty or thirty minutes and tends to not be at all full, typically several other passengers/stops. This is a good option when traffic is light (i.e., post-midnight arrivals) or if you will not be able to access your hotel room immediately. It can be fun to get a bit of a city tour upon arrival. – thanks to MSPeconomist BusIf your idea of fun is coming off a transpac and sitting on a bus for an hour, there are a few bus services that serve Changi. The buses are airconditioned, but expect journeys to take an hour or more depending on where you're going. Bus 24 goes to Ang Mo Kio, 27 to Hougang, 34 to Punggol, 53 to Bishan, and 36 into the City. Note that busses don't run much past midnight and resume again at around 6am. If you've got anything to add, please let me know and I'll put it into this post. Specifically, I've got no experience with the Airport Shuttle or with Car Rentals.