Unless the node is operated/owned by you, there is not much you can do about it.
If your carrier has direct peering with them, you can request them, but I doubt they'd do much for a broadband customer.
Even if you were enterprise, unless the issue stemmed from incorrect routing, they would not do much.
NSP prefer keeping routing as much dynamic as possible, and it also seems they do not seem to have direct landing peering in Middle-East.
While, it seems Airtel has direct peering with AWS at UAE-IX, AWS is using selective policy i.e., only very Premium Customer would have their routes advertised here.
I am seeing about 132ms and 160ms respectively as well from Mumbai.
238ms on Airtel, appears to be going via DE-CIX.