Also check your preferred airlines' policies for this. Some are letting you cancel for a refund for all flights, instead of just the usual cancel for future credit. If your city pair looks like it could be affected, maybe book a backup flight if you know you can get a refund on it if you don't need it.
Just be careful to ensure this kind of issue is even covered by travel insurance. Travel insurance gets weird when government decisions enter the fray.
I see some pretty good prices on Harmony in fall 2027. Too bad our school board has decided to muck with the school calendar so I have no idea what dates I'd have open then.