Canada booked a spot for the June 21 match after winning Group A Monday with a 1-1 draw against the Netherlands.
Sunday's game is not yet sold out, but tickets are going fast, Rita Rogers, Vancouver venue manager for the World Cup told CBC News.
"Oh it's huge," she said. "I don't think the phones have stopped ringing since that win yesterday. The spike was tremendous and it hasn't really stopped."
The Better Business Bureau is warning consumers to be careful when shopping online for game tickets, saying customers should be extra vigilant before parting with their hard-earned cash.
Legitimate ticket brokers are already seeing a huge rush in demand. Kingsley Bailey from vancouverticket.com said Tuesday afternoon that the cheapest ticket on the secondary market is around $75.
He expected that price to rise to around $125 by game time.
And, Bailey added, if Canada wins and qualifies for the quarter finals — also to be played in Vancouver — ticket prices will soar again.
"At the beginning of the tournament the demand was mediocre because we didn't have a Canada guaranteed game here," he said.
"But now that we [do] all hell is breaking loose. Everyone wants to see this Canada game on June 21."
As to who Canada will play, that won't be determined until after the first round group matches are finished.