Here you can have I believe two delays, having prepaid transportation counts for it, just let them know. The ticket has to be dated before the summons for serving so you can't rush out and buy tickets once you get it I don't know the policy of the airlines, I would assume each one is different, but I wouldn't expect any of the majors to do much about it for you.
It's not the airlines responsibility to cover you, no matter what the duty was, you took that risk buying a non refundable ticket and not getting insurance for it.