Wearing identical black T-shirts emblazoned with the words "World Champions" in gold letters, members of the United States squad waved to the crowds from slow-moving open-top floats.
The women's team members earn less than 10 % of what the men earn, despite the team outperforming the men both on the field and in revenue generation.
The mayor, a Democratic presidential candidate, said he would insist that Congress pass an amendment to the Amateur Sports Act "requiring equal pay for men and women in all of our national sports teams".
"There is no rationale why the women should not get paid what men get paid", he said during the singing at the Battery.
Star player Megan Rapinoe also spoke at the event and incorporated equal pay into her message.
Watch the parade in the video above.
Fans of the World Cup champion USA women's soccer team are gathered at City Hall in NY for a ceremony where Mayor Bill de Blasio will give the players symbolic keys to the city.
"This group is so resilient, is so tough, has such a sense of humour, is just so badass", Rapinoe told the crowd at City Hall. We have tattoos, dreadlocks. "Straight girls and gay girls", she said.
Star striker Alex Morgan also addressed the crowd.
"The whole team has been very powerful, and it's just really empowered me", says Yvonne Duck, another who turned out for the parade.More news: JAXA: Hayabusa2 has landed on Ryugu
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"America cheered as the women's soccer team won an historic fourth World Cup, but our support shouldn't end with ticker-tape parades", Feinstein said in a statement.
To rectify the wage gap, on March 8, 2019 - which coincided with International Women's Day - all 28 members of the women's national soccer team sued the US Soccer Federation for gender wage discrimination.
The team continued their charge during the parade, passing around a sign that read, "Parades are cool".
Indeed, when the US Women's soccer team makes its way up Broadway this morning, it will be on familiar ground. "Your hope is [that] back in the USA, more kids want to go out and play this great sport", she said. The same chant could be heard during the ticker-tape parade in New York City on Wednesday.
The USWNT Players' Association and the USSF agreed on a new collective bargaining agreement that ensured that the team would continue to play, but the new CBA failed to resolve many areas of grievance, per Sports Illustrated.
After the festivities in NY, the players will jet off to California to appear at the ESPYs, the United States sports world's equivalent of the Oscars, taking place in Los Angeles later on Wednesday. The team will embark on a victory tour that will consist of several friendly matches starting in August in Pasedena, California.
One stop that looks unlikely is a trip to the White House.
"Despite the fact that these female and male players are called upon to perform the same job responsibilities on their teams and participate in worldwide competitions for their single common employer, the USSF, the female players have been consistently paid less money than their male counterparts", the lawsuit said, per ESPN. "They're out there in the media and they're inspiring people, and that's what I feel like it's all about, so they definitely should get equal pay as a man". "I don't think that we want that to be co-opted or corrupted by this administration".
Former US President Barack Obama has tweeted his congratulations to the US women's football team after their 2-0 triumph against the Netherlands at the 2019 FIFA Women's World Cup in France.