But they were made to work hard for them as they were forced to come from behind after Jaime Peters had given the visitors the lead in the first half.
The diminutive winger capitalised on an uncharacteristic mistake by Julian Speroni to give the away side the lead, but a mistake up the other end in the Ipswich box allowed Fonte to execute an emphatic volley into the roof of the net from six yards.
Up to Ipswich's opener the game had enjoyed very few chances, with both sides playing their part in a scrappy and, at times, rather dull affair.
On two minutes Alan Lee won a free kick outside the box but Ambrose curled it straight into the wall to mark Palace's first opportunity.
Supporters had to then wait until the 19th minute for the next chance and, unfortunately for Palace it proved first chance, first goal for Ipswich.
Clint Hill gave away a free kick on the right, and as it was floated in Speroni was less than convincing and just about got it away but when the next cross was whipped in, he dropped the ball to the feet of Peters who volleyed in to the back of the net.
But then the game suddenly sparked into life and transformed itself from a Boxing Day Turkey into a Christmas Cracker as a flurry of activity punctuated the final stages beginning with Palace restoring parity.
A long throw in from the right was not cleared properly by Damien Delaney and it fell to Fonte, who showed the composure of a centre forward to volley it past the keeper and into the roof of the net.
The drama was not finished there though as there was still time for a red card and goal line clearance .
The first came on 39 minutes when Jon Stead was straight red carded for a challenge on Freddie Sears. The Ipswich Town striker had been visibly aggrieved by a challenge from Claude Davis and then threw himself into a dangerous tackle on Sears.
Replays showed it was one footed but his studs were definitely up and the referee was in a good position to make the decision.
Then, a minute before the end of the half, Fonte almost got his second of the afternoon when he headed a corner goalwards, but Owen Garvan cleared it off the line.
The second half, though entertaining, was noticably starved of clear cut chances.
The first of them came on 57 minutes when Moses, who was again superb all afternoon as he terrorised the defenders, saw a low cross put over his own bar unconvincingly by Delaney.
The same man was at fault a minute later when Palace completed the turnaround when he again struggled to deal with another Moses cross.
The Ipswich defender swung a boot at it, but only succeeded in playing it to Derry on the edge of the box, who then played in a brilliant ball back over the top to Danns.
The midfielder raced on to it, and under the challenge of his marker managed to slot it past goalkeeper Arran Lee-Barratt.
The goal acted as a major confidence booster for Palace, and at times some of the football was great to watch.
On 75 minutes Clint Hill almost typified that confidence when he was inches away from converting an audacious overhead kick from a tight angle.
Picking it up inside the box, on the left hand side, he was shadowed by Ipswich's goalkeeper for a reason best known to him, and spotting the opportunity Hill tried the clever effort only to see it just wide.
The lead was almost extended three minutes later when Clyne broke with the ball from his own half and played in Moses on the right.
With no marker Moses took the ball to the edge of the box and unleashed a fierce effort to the near post, but was denied superbly by Lee-Barratt.
The Ipswich keeper was then in action on 84 minutes when he was forced down to his right by an Ambrose effort, while Derry also drew him into a save with a 25 yard strike and Ambrose struck the top of the bar with a free kick late on.
But the win was capped off with the final effort of the game when a quick break led by Neil Danns was finished by Moses.
It was just reward for a player that had worked tirelessly all afternoon and when he was found with a simple ball into the box from Danns, he had the simple task of slotting it past Lee-Barratt from 12 yards for his fifth goal in six games.
Att: 16, 496
Crystal Palace: 1. Julian Speroni, 2. Nathaniel Clyne, 3. Clint Hill, 4. Shaun Derry, 6. Jose Fonte, 7. Darren Ambrose, 8. Neil Danns, 11. Victor Moses, 16. Freddie Sears (22. Johannes Ertl, 70 ), 19. Alan Lee (18. Calvin Andrew, 90 ), 24. Claude Davis
Ipswich: 28. Arran Lee Barrett, 2. David Wright, 3. Damien Delaney, 4. Gareth McAuley (cpt), 7. Owen Garvan (25. Alan Quinn, 69), 12. Jaime Peters, 14. Jon Stead, 17. Jack Colback, 18. Colin Healy (9. Pablo Counago, 69), 22. Liam Rosenior, 23. Carlos Edwards (40. Connor Wickham, 45)
Subs: 10. David Norris, 16. Tamas Priskin, 32. Ian McLoughlin, 35. Tommy Smith,
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