Is it required to have a Round-trip ticket? or Can we use a one-way ticket going to the U.S.? Posted on August 24, 2014 by Mrs. Presson Round-trip ticket or One-way ticket, it doesn’t matter. It all boils down to your personal preference AND budget. I used a one-way ticket because it was cheaper than any other ticket I’ve seen online. Note(s): If you purchased a round-trip ticket, make sure you cancel the return trip upon getting married to your US Citizen…