What does it cost to travel to u.s.a?
is the question: what r the requirements to travel to the usa ? or how much is the ticket?
if u wanna know how much the ticket costs, then do an online search.
but if u wanna know about the basics in planning a trip to the usa, then that's a long seminar i wouldnt be able to give. but the basics r:
valid passport, affidavit of support,visa, ticket