According to figures shared with local organisers, around 40,934 tickets had been sold for the June 12th clash as of April 10th, via The Athletic.

FIFA lists SoFi Stadium's World Cup capacity at 69,650, meaning tens of thousands of seats may still need to be filled.

Well, that's interesting. So basically, they sold less than half.

The stadium bowl has open sides and seats 70,240 spectators for most events, with the ability to expand by 30,000 seats for larger events. Source

The United States’ opening game of the 2026 World Cup was expected to be one of the hottest tickets of the tournament.

And it would be if the prices were even remotely affordable. The cheapest ticket in the nosebleeds is $1100, while the best seats are around $2500... for a group stage game! The most expensive seat to the FINAL in Qatar was $1100.