I am looking currently at flights from Darwin, Australia (DRW) to Tel Aviv, Israel (TLV).
There are not many offerings on airline websites for routes between these airports. The itineraries I found have a very long connection in Singapore (SIN) airport, around 18 hours. I don't really mind the long connection, but would wish to remain "airside" and not have to go through immigration/passport-control and "formally enter" the country (Singapore).
What I found is quite a convoluted route, with Singapore Airlines and Finnair through Singapore (SIN) airport and then Helsinki (HEL) airport.
I am wondering whether there would be any issue with staying for 18 hours "airside" in transit in Changi airport in Singapore. Main issues I can think of are:
There will be an issue passing on my baggage when the connection is so long, so I will need to go pass immigration and collect it myself. I could probably travel with carry-on baggage only if that will help.
Maybe there is simply a limit on how long a passenger is allowed to stay "airside" in transit?