A direct flight from London Heathrow (LHR) to Sydney Kingsford Smith (SYD) will keep you in the air for roughly 21 to 23 hours. Yes, you read that right—almost an entire day. But here’s the kicker: that’s only the time from takeoff to landing. Add in the two hours you need at the airport before departure, plus the layover if you’re not on QF1 (the famous kangaroo route), and you’re looking at a total travel time of 24 to 30 hours door-to-door. I know, I know—it sounds like a cruel joke.
Why so long? Because the Earth is really, really big when you try to fly from one side to the other. The actual distance is about 10,500 miles (17,000 kilometers). To put that in perspective, that’s the same as flying from New York to Tokyo, then continuing another 2,000 miles. Your plane won’t even take the shortest path—it has to curve over northern Europe and Asia to avoid the northern polar ice cap and tricky winds.
