Originally Posted by
number_6
And the answer is ... the absurd runway situation at NRT. The extra time is taxi/wait time for getting off the ground at NRT. Typically 30+ minutes delay. Inbound gets priority so does not suffer from the same delay. JL got tired of having a late arrival into DEL so they incorporated this (accurately) into their schedules. The rest of the difference is due to winds, of course, which does amount to almost 2 hours for a 3679 mile flight. The rest is NRT airport delay.
But the difference is dropping down to 2 hours in a few days... does that mean the NRT runway problem is going to be solved by then?