Booking tickets to see family in Australia and noticed Qantas fly non stop London to Perth, taking 16 hrs 45 mins. My flight would be 2 hour stop in Perth to refuel then 3.5 hours onto Melbourne. Would I be crazy to consider spending nearly 17 hours on a single flight with 2 young children? I would only be saving 2ish hours in total travel time compared to other routes. Has anyone done this and would recommend?