Benik Afobe scored twice and Jed Wallace added the third on an afternoon where Town manager Paul Cook admitted his side found things difficult against Gary Rowett's men.
The game saw new signing Conor Chaplin make his first appearance in an Ipswich shirt, playing the final 20 minutes from the bench, while fellow new boy George Edmundson missed out with a minor knock.
In the Millwall goal was former Blue Bartosz Bialkowski, who was returning to the club where he won a hat-trick of player-of-the-year awards before departing in the wake of relegation.
Photographer Stephen Waller was on hand to capture the best of the action.
Fans at the game. (Image: © Copyright Stephen Waller)
Young fans at the game. (Image: © Copyright Stephen Waller)
Joe Pigott with a first half effort saved by Millwall keeper Bartosz Bialkowski. (Image: © Copyright Stephen Waller)
Macauley Bonne in action. (Image: © Copyright Stephen Waller)
Kane Vincent-Young goes to ground. (Image: © Copyright Stephen Waller)
Wes Burns first half effort hits the post. (Image: © Copyright Stephen Waller)
Wes Burns first half effort hits the post. (Image: © Copyright Stephen Waller)
Wes Burns fires in a second half shot against Millwall (Image: © Copyright Stephen Waller)
Millwalls Jake Cooper and Towns Luke Woolfenden battle for a high ball. (Image: © Copyright Stephen Waller)
A fan waves as she heads for the exit at the end of the game. (Image: © Copyright Stephen Waller)
Wes Burns in action early in the game. (Image: © Copyright Stephen Waller)
Tempers flare in the first half. (Image: © Copyright Stephen Waller)
Danny McNamara picked uo a yellow card for this challenge on Armando Dobra. (Image: © Copyright Stephen Waller)
Danny McNamara picked uo a yellow card for this challenge on Armando Dobra. (Image: © Copyright Stephen Waller)
Benik Afobe wheels away after scoring his and Millwalls first. (Image: © Copyright Stephen Waller)
Matt Penney pictured during the game against Millwall. (Image: © Copyright Stephen Waller)
Janoi Donacien fires in the ball. (Image: © Copyright Stephen Waller)
Kane Vincent-Young with a second half volley that was deflected out for a Town corner. (Image: © Copyright Stephen Waller)
Kane Vincent-Young with a second half volley that was deflected out for a Town corner. (Image: © Copyright Stephen Waller)
Former Town keeper Bartosz Bialkowski, back at Portman Road with Millwall, acknowledges Town fans as he leaves the pitch. (Image: © Copyright Stephen Waller)
Former Ipswich team-mates Tomas Holy and Bartosz Bialkowski embrace at the end of the Millwall match. (Image: © Copyright Stephen Waller)
Armando Dobra weaves away from Danny McNamara. (Image: © Copyright Stephen Waller)
Rekeem Harper hasn't started a league game for Ipswich Town since September 11. (Image: © Copyright Stephen Waller)
Town manager Paul Cook looks on. (Image: © Copyright Stephen Waller)
Town manager Paul Cook. (Image: © Copyright Stephen Waller)
Lee Evans with aTown free-kick. (Image: © Copyright Stephen Waller)
Matt Penney pictured during the game against Millwall. (Image: © Copyright Stephen Waller)
Macauley Bonne looks to head the ball through to Wes Burns. (Image: © Copyright Stephen Waller)
Macauley Bonne is challenged from behind by Shaun Hutchinson. (Image: © Copyright Stephen Waller)
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