An Argentina fan holds a replica of the World Cup trophy in the stands during the 2022 final.

ANNE-CHRISTINE POUJOULAT/AFP via Getty Images

You've probably heard by now that this year's World Cup is set to be the most expensive yet.But what does that actually mean for fans?Ahead of the tournament, Business Insider crunched the numbers to game out how much it would cost a fan to follow their home team through the biggest sporting event in the world.Using booking websites and publicly available information from host cities, we calculated how much a fan would spend to attend the event based on four data points: the cost of each game ticket, flights, hotels, and local transit. All flight, ticket, and hotel data was gathered in early May; a fan's true spend could fluctuate if they book earlier or later.There are 48 teams competing in this year's World Cup. The event runs for roughly five weeks, from June 11 to July 19. To narrow down the scope of the experiment, we decided to follow the finalists of the last tournament and two big favorites for the 2026 tournament: Argentina and France.The results? Get ready to spend.We found that a dedicated Argentina fan could have to shell out over $30,000 to follow their team the whole way through the tournament.