I am looking currently at flights from Darwin, Australia to Tel Aviv, Israel (airports are DRW to 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:

(1) 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.

(2) maybe there is simply a limit on how long a passenger is allowed to stay “airside” in transit?

Thank you!