New Jersey governor Mikie Sherril previously criticised Fifa’s refusal to subsidise transport at the event and insisted local taxpayers would not foot the bill.
Travel at the World Cups in Russia and Qatar was free, and the USA had committed to offer the same perk in its 2018 host agreement.
In a tweak to the agreement made in 2023, it was decided that supporters would be able to travel at cost.
Responding to criticism, Fifa also claimed there was no precedent for transport price rises for a major event at MetLife Stadium.
In a social media post on Tuesday, Sherril said commercial sponsorship meant the price for the 30-minute train journey could be cut.
“Good news: Ahead of NJ Transit World Cup train tickets going on sale, NJ Transit is lowering ticket prices to $98 without New Jersey taxpayer money,” Sherill wrote.
“Thank you to our partners for helping make this possible.”
New York governor Kathy Hochul said “getting to the World Cup should be as accessible as possible” after announcing the 75% reduction in round-trip bus fares on social media.
She added that 20% of tickets would be reserved for New Yorkers in recognition that they are “helping host the world”.
Elsewhere, fans travelling to Foxborough, Boston are facing transport price hikes of more than 300%.
Round-trip tickets from central Boston (South Station) to Boston Stadium at Foxborough usually cost $20 (£15) but fans will be charged $80 (£60) at the World Cup.
The prices in New Jersey and Foxborough will hit England and Scotland fans.
The Three Lions take on Ghana in Foxborough on 23 June, and then face Panama at MetLife Stadium on 27 June.
Steve Clarke’s Scotland have two games in Foxborough – against Haiti on 13 June and Morocco on 19 June.
Kansas City is offering return bus tickets to the stadium for $15, while Philadelphia has confirmed their usual price of $2.90 will remain the same for the tournament.