They are REQUIRED to refund your tickets, yes.

HOWEVER--do you still want to go??? Since were talking November here, you COULD just wait to see how things shake out, IF you still want to go.

Delta in particular has been doing a lot of changing around of their schedules--cancelling flights and then adding back flights on different days, a few days later. I assume this is due to low passenger loads. UNLESS they file bankruptcy, which I have no indication that they will (or they won't), IF you still want to go, there is not an advantage to you to go ahead and contact them now to get your money back. Of course, if they file bankruptcy, you could be scr*wed, but hopefully that won't happen.

IF they add back more flights on different days (or if there are flights available around your time right now that will work), call them and ask to be switched to a different day. Since they cancelled your flight, they are required to give you your money back, which they do not want to do. It is to THEIR advantage to not give you your money back, but to fly you down on a different day, even if their listed price for that day is more than what you paid. So, first, if there are flights available now around your date that will work for you, call and ask to be switched to that date. They will probably do that for you, free of charge. If you cancel now and get your money back and a few days from now, they add back dates that will work for you, then they will NOT be able to reinstate your booking for the price you paid (if it was less). You can book at the new, higher price, for sure, but they won't honor the price you originally had.

So, IF you still want to go, there is little advantage to you to go ahead and get your money back now. You are ENTITLED to your money back, pursuant to FAA rules. If you wait a bit, you may be able to switch to a different date that will work for you. Or, if by some miracle, the price goes down from what you booked, then go ahead and cancel and get your money back and re-book.