Likely match cities for USA: All 10 US host cities. Use the Fanpath tournament simulator to map USA's most probable bracket path across all 16 host cities before booking anything.
US fans have the massive advantage of no international flights. The priority is match tickets — USA group games will be the hardest to get.
Solo fan cost estimate: $2,000–$6,000 solo (domestic travel advantage) excluding international flights. Coordinating with other USA fans through Fanpath (shared accommodation, group transport) cuts this by 40–60%.