Old Mar 24, 19, 12:45 pm
  #9  
margarita girl
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Join Date: Jun 2007
Location: Toronto vicinity
Programs: UA 1K, AC MM E50, AA EXP, SPG P100, Marriott Plat, Fairmont Plat
Posts: 11,598
I've done this before but in the reverse (use a Cdn card on US website.) Obviously, you can't sign in to your account. You must use guest mode. IIRC, I entered my correct street address, but used a fake state and zip code. Can't remember what I used for the city. I believe it worked for either MC or Visa, but not both. You'll have to experiment. But the transaction went through. Once I had my PNR, I just added my UA number and it appeared in my account. No issues.
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