International Flight and vacation best credit card?

So I’m planning to study abroad in Korea this fall. Airfare is around 2k. Domestic flight 400 as well. I have a summer trip planned. 600 on Turo car rental and 1k on Airbnb. Considering I want to open my first travel card which could be the best in this case. Current cards AMEX BCP, BOFA CCR, C1 Savor