Hi sctba
Getting a flat is a real bummer, had a few myself.
No way get ride of the new tire, you need a new tube thats for sure, you can patch the inside of the tire if needed no prob. my flats in both rear and front just had new tubes fitted and then refitted the same tires, done by two different bike shops, so i would say no worries there mate.
but im from oz , not sure if you guys have some strange laws out there with tires, but if you needed a new tire everytime you had a puncher that would cost a fortune.