Is this a bad idea?

I am moving overseas in February and I wanted to have my plane ticket bought by now. The prices are very low right now but I don’t have the money. I will have the money by the end of January but I know prices will have shot up a few hundred dollar by then. I was thinking about getting a credit card just to buy the plane ticket and completely paying it all off next month. I’ve been told before that is the only way credit cards really help your credit. To be honest having a credit card scares me and I would never want to use it again. I don’t want to mess my credit up because it is really good right now. Do you have any suggestions of what else I could do? Or do you think the credit card idea isn’t so bad?