United Airlines and Vistara, an Indian airline founded by TATA and Singapore Airlines, penned a codeshare agreement in 2019 that has now expanded.
United Airlines MileagePlus members can now both earn and redeem miles on Vistara operated flights effective February 1, 2020. I would assume that Vistara frequent flier program members are eligible to earn and burn on United.
You can access United’s page for the Vistara here.
Here’s current Vistara’s route network:
The airline is in the process of expanding its international presence and is looking for options opening London. The airline is scheduled to start receiving its first Dreamliner planes this year.
Here’s the United’s earning chart for Vistara:
The first chart is for United issued tickets on 016-stock. The latter is for all others, including flights ticketed directly with Vistara.
Indian based airlines haven’t done well in recent years. Kingfisher, which was about to join Oneworld, and JetAirways, once great airline, both collapsed. Air India, which was founded by TATA, is in government-funded life support.
Vistara was founded in 2013 by TATA and Singapore airlines and started its operations two years later. It certainly has benefited from the collapse of JetAirwys as it acquired some of their former aircraft.
I would assume that they start long-haul destinations from India once those Dreamliners begin to come online or they manage to acquire other aircraft. I have yet to fly on Vistara, but having this partnership makes it easier as it gives one more option where to credit the flights.