Newcastle United fan Liam Sweeney was travelling to see his team play in New Zealand when Malaysia Airlines flight MH17 was shot down above Ukraine.
The crash on 17 July killed all 298 people on board. It's being blamed on pro-Russian rebels.
Debris at the crash site.
The 28 year old was among 10 British people on the flight.
Father Dermot Donnelly led mass: "We're here to celebrate," he said.
"Celebrate in the true sense of the word because to celebrate something means to put it into context and to give it meaning.
"Today we're reminded that death has no hope without faith in Christ."
Father Donnelly also lit the Easter Candle near the coffin.
He said: "Light is a powerful symbol because light always, always, always overpowers darkness.
"So we pray today that the hope that our faith brings will comfort those who love Liam in the days and the years ahead."
Mr Sweeney was described as a "tremendous bloke" by his father Barry.
He told the BBC: "Football was his life, it was all he talked about.
"I'd rather it was me sitting on that plane than him because he was only 28.
"I wish I'd been on the flight with him, we could have had a drink together."
John Alder
Liam had been travelling with friend and fellow fan John Alder. His remains have still not been found although it's understood his family will attend Mr Sweeney's funeral mass.
The family of John Alder also paid tribute.
In a statement they said: "We would like to thank everyone for their thoughts and wishes and incredibly generous gestures.
"We are struggling to comprehend what has happened, but we are touched and moved by your kind words, acts and the knowledge that so many people saw John for who he was: a kind, courteous man who was much loved as a son, brother, uncle and fan."
A private burial was held after mass.