Robert Snodgrass gave the Canaries a half-time lead, a Ben Foster howler gifted Grant Holt a second, the third was an own goal from former Ipswich defender Gareth McAuley and Jonny Howson scored a spectacular late fourth.
"I thought we were excellent from the first minute right through to the 93rd minute," said Hughton, following a third win in 20 games.
"Incredibly relieved. We've embarked on a tough season, we've had some good periods in that season.
"We've found it difficult since Christmas to get the right formulas to win us football matches.
"On a day that it really counted, it was arguably our best performance of the season."