At The Fours Restaurant and Sports Bar on Sunday, exuberant New England fans cheered as the Patriots ran onto the gridiron inside Gillette Stadium — and the cheering continued over the next three hours as the team clinched a 24-20 win that sends them to their third Super Bowl in four years.

“I feel completely stoked,’’ Melissa Berglund, 38, of East Boston, said inside the pub in Boston’s Bulfinch Triangle. “We’re going to win our sixth Super Bowl ring right now.’’

Earlier, Berglund confessed, she had been unsure the Patriots could pull off a victory.

“We were very, very, very worried. Very worried,’’ she said. “They came through in the end, as they always do. We’re going to go on and we’re going to beat Minnesota, or Philly, or whatever, and Tom Brady is going to solidify himself as the best quarterback in the history of the sport.’’

At the Cask ‘n Flagon, next to Fenway Park, the room erupted with cheers as strangers hugged and high-fived one another when the Patriots scored their third touchdown, effectively securing the win.

“I’m ecstatic, like freaking amazing,’’ said Kirby Talley, 26, an Arkansas native who was watching the game with her boyfriend.

The change in lead was a huge relief, she said.

“I was crying at one point. I was like, ‘No, this can’t be it,’ ’’ Talley said. “We’ve been waiting on this. We knew it was coming; we’re going to be cocky.’’

The AFC championship game was full of nail-biting moments for fans, as the Jacksonville Jaguars took the lead in the second quarter with back-to-back touchdowns.

The Cask ’n’ Flagon got quieter in those moments, as fans stood anxiously watching the screens.

“It’s a little bit somber right now,’’ said Mario Sindone, 52, of Scituate, after a Patriots touchdown near the end of the first half brought the score to 14-10, with Jacksonville leading.

“Everybody’s still excited, but I think there was an expectation that we would be in the lead going into the half,’’ said Sindone, a Patriots fan for 20 years.

Sindone said he came to Boston to watch the game so he could experience the camaraderie of being with other fans, and that he had expected the Jaguars could give the Pats a run for their money.

Throughout the unpredictable game, the mood inside The Fours fluctuated with the Patriots’ fortunes.

Many fans had just come from the nearby TD Garden, where the Celtics lost to the Orlando Magic earlier in the afternoon.

They didn’t want a second loss, they said, especially to another Florida team.

“What the hell! Oh my God, what was that!’’ yelled Angel Means, 59, of Burlington, Vt.

She had driven down with her husband, David, to be among her people — Patriots Nation. Watching an AFC championship game in Vermont is just not the same, she said.

Originally from Georgia, Means has lived in New England for 32 years and is a die-hard New England Patriots fan, she said.

“I’m just trying to support my super fan,’’ said David Means, looking at his wife with a smile.

She said he tried to remind her of the Patriots comeback during the 2017 Super Bowl. “That’s once in a lifetime,’’ he said she responded.

The worse the Patriots played, the louder Jaguars fan Robert Reyes got. His hoots and screams echoed as the rest of the crowd groaned.

Reyes, 27, is a Jacksonville resident who traveled to Boston to watch the game with his grandfather Miguel Zavala, 63, uncle Mike Zavala, 36, and cousin Michael Zavala, 10, who all moved from Florida to Weston four years ago.

At the far end of the pub, Reyes made a point to cheer for the Jaguars as rowdily as he could.

“I’ve got to make up for a whole bar of people,’’ Reyes told his family. “I have to represent. I’m going into enemy territory to stand here proud.’’

After the Patriots won, fans inside The Fours were excited but also sympathetic to Reyes. It was one heck of a game, they said.

Bill Nixon, 35, of South Boston, was magnanimous.

“I’m going to buy that Jags fan a shot,’’ Nixon said, pointing at Reyes.

Mike Zavala, called the Patriots’ victory a “great comeback win.’’

Reyes’s young cousin is looking forward to a new pair of Curry 4 basketball shoes. That was the bet the boy made with Reyes, and Reyes lost.

“But, see, I’m a man of honor,’’ Reyes said. “What I said was, if the Jaguars would make it all the way, I’ll fly up to spend this time with family to watch the game.’’

At the table next door, Angel Means couldn’t stop hugging her husband as the game’s final minutes wound down.

“After the last Super Bowl,’’ she said, “you can never stop watching.’’

Jeremy C. Fox can be reached at jeremy.fox@globe.com. Follow him on Twitter @jeremycfox. Cristela Guerra can be reached at cristela.guerra@globe.com. Follow her on Twitter @CristelaGuerra. J.D. Capelouto can be reached at jd.capelouto@globe.com. Follow him on Twitter @jdcapelouto.