Delta pilot asking a quick question....

Trying to get to India in January. You all seem to be the only US carrier in town that still makes it all the way there vs having to go with a foreign carrier.

Anyone have any expertise on how either a jumpseat would work or an ID90? My original goal was to stay on Delta metal as long as possible, either to AMS, CDG or HKG and then ID90 it. But, if I'm on a non-Delta flight anyway, it might be easier to make it work stateside on United than try to make it happen overseas with KLM, Air France, Jet, etc...

Any info would be helpful (am I allowed to jumpseat on United internationally to and from India, are any ID90's ever upgraded, how packed are the flights, etc..etc...?)

Thanks,
HTBH