From Phuket, long-haul journeys with Singapore Airlines generally involve a connection in Singapore and typically range from around 13 to just over 21 hours in total travel time, depending on routing and connection.
In Europe, cities such as London, Manchester, Frankfurt, Rome, and Istanbul are long-haul options, usually taking between roughly 13 and 17 hours including your connection.
In the Americas, Seattle, Los Angeles, and New York are among the furthest destinations, with total travel times often between about 17 and 21 hours.
In West Asia and Africa, Dubai, Riyadh, and Cape Town are considered longer journeys, with approximate travel durations from around 10 hours to over 15 hours depending on the specific route and any additional stops.
In the Southwest Pacific, Sydney and Brisbane in Australia are also long-haul or upper mid-haul options, typically taking from roughly 9 to 11 hours in total.