Match ends, Ipswich Town 0, Burnley 1.
Burnley extended their lead at the top of the Championship as Scott Arfield's header earned victory at Ipswich.
The former Huddersfield midfielder stooped to guide Kieran Trippier's cross into the far corner.
Ipswich were denied a half-time lead when Trippier cleared off the line from Cole Skuse's half-volley.
For Burnley, Michael Kightly's 20-yard shot was stopped by Scott Loach before Arfield struck to take the Clarets two points clear of QPR.
Sean Dyche's side have won nine of their opening 12 Championship matches - their best start to a season since 1897, when they gained 10 victories from their first 12 Division Two games.
In the early stages, Burnley captain Jason Shackell made a decent early block after David McGoldrick had been teed up by Daryl Murphy's header, while Ipswich keeper Dean Gerken was forced off injured six minutes before half-time, to be replaced by Loach.
The home side continued to create chances at the other end, though, with Paul Anderson heading wide after Trippier sliced a clearance high into the air.
Burnley's right-back was involved again two minutes before half-time, when keeper Tom Heaton flapped at a looping Luke Hyam cross, but Skuse was denied a first goal for Ipswich when Trippier cleared his half-volley off the line.
Skuse then hit a 25-yard shot just wide after picking up Ryan Tunnicliffe's low pass inside.
Burnley striker Sam Vokes and Ipswich defender Aaron Cresswell both had penalty appeals rejected after the interval.
Vokes tumbled over with Luke Chambers nearby, but was judged to have tripped over his own feet, while Cresswell's goal-bound shot was deflected by Shackell with Ipswich's players appealing in vain for handball.
Anderson's 20-yard shot for the home side fizzed just wide, while Kightly's effort from a similar distance tested Loach at the other end.
But with the game edging towards a draw, David Jones fed Trippier on the right-hand side and his low cross was headed into the far corner by Arfield.
Ipswich manager Mick McCarthy:
"I don't think Burnley were any more accomplished than us, but they had a Johnny-on-the-spot who came in and scored.
"We got what we deserved as they defended their goal better than us for the 90 minutes.
"I was delighted with how we played against a very good side but are they better than us? I don't think so."
Burnley manager Sean Dyche:
"It is all about small margins. They had the better of the first half but we had a solid framework, did the basics, and were solid enough not to concede.
"The second half levelled out, although there were pockets of good play. I was thinking it was going to be a 0-0, and then a fine moment of quality saw a good cross and a good header."
- 22GerkenSubstituted forLoachat 39'minutes
- 11AndersonSubstituted forTabbat 85'minutes
- 9MurphySubstituted forNoubleat 85'minutes
- 8MarneySubstituted forEdgarat 88'minutes
- 19KightlySubstituted forTreacyat 82'minutes
- Graham Scott
- Shots on Target
Second Half ends, Ipswich Town 0, Burnley 1.
Offside, Burnley. Ben Mee tries a through ball, but Sam Vokes is caught offside.
Corner, Burnley. Conceded by Luke Chambers.
Attempt missed. Danny Ings (Burnley) right footed shot from outside the box is high and wide to the right. Assisted by Sam Vokes with a headed pass.
Substitution, Burnley. David Edgar replaces Dean Marney.
Tommy Smith (Ipswich Town) wins a free kick in the defensive half.
Foul by Sam Vokes (Burnley).
Aaron Cresswell (Ipswich Town) wins a free kick in the defensive half.
Foul by Scott Arfield (Burnley).
Substitution, Ipswich Town. Jay Tabb replaces Paul Anderson.
Substitution, Ipswich Town. Frank Nouble replaces Daryl Murphy.
David McGoldrick (Ipswich Town) wins a free kick in the defensive half.
Foul by David Jones (Burnley).
Substitution, Burnley. Keith Treacy replaces Michael Kightly.
Goal! Ipswich Town 0, Burnley 1. Scott Arfield (Burnley) header from the right side of the box to the bottom right corner. Assisted by Kieran Trippier with a cross.
Delay over. They are ready to continue.
Delay in match Luke Hyam (Ipswich Town) because of an injury.
Attempt missed. David McGoldrick (Ipswich Town) header from the centre of the box is too high. Assisted by Luke Hyam.
Luke Hyam (Ipswich Town) wins a free kick on the left wing.