I have a trip planned for Singapore that is currently booked with China Eastern (JFK-PVG-SIN) for early March and hsa a very high chance of ultimately being cancelled given present conditions of coronavirus 2019-nCoV. I can get a full refund for the ticket, or change dates, but they've said they can't rebook/reroute me on other SkyTeam airlines if the flight is ultimately cancelled.
Since I'd rather not be stuck with rebooking a week or so in advance and pay the exhorbitant extra price that goes with it, I've been looking at alternate routes.
I can rebook with Korean Air or Delta for a JFK-ICN-SIN route (codeshared). All else equal, I would normally book with Korean because I'd get extra MQD on the conversion, but I know that in the event there are problems, Delta is able to quickly reroute me with SkyTeam partners like Air France or KLM (something I've experienced now on several transatlantic flights).
If something were to happen to cause a problem with the JFK-ICN-SIN flight, would Korean Air be willing/able to reroute me through another SkyTeam partner or would I be stuck with refund/rebook on KA only?