IF, it comes to that. I do believe most if not all flights will be suspended/canceled for some time. Same was the case most recently in Thailand where the protestors were active against current govt. and it caused many international flights to be canceled.
True. Though to be fair, protesters were occupying Bangkok Airport and thus flight cancellations. Here the situation will be different, and the risk is air crafts can be hit by mistake if missiles are flying all over. Unlikely, yes, but thats perhaps the worst case scenario.