Luke Donald of England was second in a tie with Fredrik Andersson Hed of Sweden.
Padraig Harrington signed for a one over par 72 having made the turn in level par but dropping a shot on the back nine to come in on 3 under for the tournament and the best of the Irish challengers. Harrington finished in a tie for 6th alongside Danny Willett and Robert Karlsson.
Paul McGinley had a level par round reaching the halfway one under and then dropping a shot on the back nine to finish two over for the event.
Damien McGrane was two under at the turn but then carded bogeys on 15 and 16 to go one under for the day and 2 over for the tournament.
Graeme McDowell was two over one under for the day despite an eagle on the 17th. But a round with seven bogeys proved costly and he finished with a 3 over total.
Gareth Maybin carded two birdies early to finish the front nine in 33 completing the day one over with a 69 and finish 3 over.
Rory McIlroy was two over par for the day having lost momentum early with a double bogey on the 3rd hole. He ended the BMW PGA Championship on 5 over.
Peter Lawrie double bogeyed the 15th to card 39 on the back nine having made the turn in 33 to end the final round one over par and 6 over for the tournament.
Shane Lowry finished 4 over par on the final day with a 75 to sign for 8 over total. A triple bogey on the 8th the biggest setback for the winner of last year's 3 Irish Open.
