New York-based John Gellert emerged as the lucky winner when his name was chosen in the draw at Doha International Airport ahead of the festive season.
Upon hearing the news, Gellert said the timing could not have been better as he was soon to become a father for the first time.
"I was pleasantly surprised by the news as I have been buying the Qatar Duty Free tickets for many years when traveling from Qatar and never thought that I would win," said Gellert, who bought his winning ticket during a rushed trip back to New York from Dubai to celebrate his father's 80th birthday.
"The money will help us build our new home and fund the education of our child and I am very grateful to Qatar Duty Free for helping me win this exciting promotion."
Qatar Airways Group Chief Executive Officer Akbar Al-Baker congratulated Gellert, saying this was the second American to win the instant dollar millionaire prize this year.
"On behalf of Qatar Duty Free, congratulations go out to Gellert for his wonderful win coming at a time of joy and celebration for him and his family. "The draw has been an exciting attraction for duty free shoppers at Doha International Airport ever since its introduction five years ago."
The US dollar millionaire raffle was launched in May 2006 giving passengers a great opportunity to win the bumper prize as each draw is made after 5,000 tickets are sold.
Departing and transiting passengers at Doha International Airport are able to purchase raffle tickets for $263 or QR950 each.
Tickets can also be bought online by anyone from Qatar Duty Free's website at qatardutyfree.com.qa
