Let's take a look to itinerary of a flight from Dubai to Tokyo taken here
It's the same airline.
One more example. Here is the route of flight from Istanbul to Tokyo

Can somebody explain why return route is so different flying from East to West?
Let's take a look to itinerary of a flight from Dubai to Tokyo taken here
It's the same airline.
One more example. Here is the route of flight from Istanbul to Tokyo

Can somebody explain why return route is so different flying from East to West?