Originally Posted by
Often1
I don't know any carrier that will or even has the ability to extend ticket validity beyond one year.
Your best bet here is to make a claim on your travel insurance based on the current medical emergency.
You've learnt something today
Delta can and will extend tickets. Not sure of the restrictions, but I had a ticket with an expiration date 6 months in the future and used it to buy a ticket 8 months in the future. I did have to escalate but a supervisor did it. So create a compelling case and you may be lucky.