Mikel Arteta’s side is six points behind leader Liverpool, which has a game in hand.
Second-bottom Ipswich had won two of its last three away games but was up against it from the start at the Emirates.
The visitors did not have one touch in the Gunners’ box during the first 45 minutes on Friday and, although Ipswich showed signs of life after the break, it was Arsenal which continued to dominate the game, marshaled by Declan Rice in midfield.
Kai Havertz got the only goal midway through the first half when he knocked in a cross from Leandro Trossard.
Havertz, Rice, Mikel Merino, Martin Odegaard and Gabriel Jesus all had chances but none of them could add to Arsenal’s tally.
“It’s so tough, every team is tough to break down,” Havertz said.
“They fight for each other and at the end we’re very proud for the win.
Arsenal is a point above third-place Chelsea and two points clear of season surprise team Nottingham Forest in fourth.
Seagulls and Bees share the points on south coast
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Brighton had most of the chances but could not find the net in a 0-0 draw with Brentford that extended the south coast club’s winless run to six league games.
It was a frustrating night for the home side and especially Julio Enciso. The Paraguay striker had a host of opportunities to score but couldn’t make them count.
Along with Southampton, Brentford has the worst away record in the league with seven losses and two draws and it was easy to see why in this toothless performance.
Brentford had an early goal from Yoane Wissa ruled out for offside and, although it came a bit more into the game in the second half, it failed to pressure Icelandic goalkeeper Hakon Valdimarsson, who made his Premier League debut eight minutes before halftime when Mark Flekken went off with a thigh injury.
One bright spot for the home side was the return of winger Solly March. He came on as a late substitute to make his first appearance for Brighton since injuring a knee against Manchester City 14 months ago.
The result leaves Brighton in 10th place with 26 points, one spot and two points ahead of the Bees.
