I made a flight plan on simbrief from VIDP to KSFO. There are two main routes this flight takes:
South of the Himalayas and across the Pacific, normally in the winter when the jet stream is stronger.
North of the Himalayas and through Siberia, when the jet stream is less powerful.
There were two flights irl (United/Air India) and both have been using the northern route this entire week. Neither has gone south recently. However, the first route option that simbrief provided last night was for the southern route. It ended up being almost an hour longer than the real flight.
Two of the provided routes went north but my question is: how do you determine which route will be the fastest. When you switch between routes simbrief doesn’t adjust the ete. Does anyone know a practical way to get simbrief to provide the fastest route?