His opponent Joe Swail (N.Ireland) took the early lead with 5-2 before Carter stormed back with seven frames on the trot to win 9-5.
Anthony Hamilton (England) and Neil Robertson (Australia) lost out in the semifinals.
Carter received £35,000 for the victory and Swail got £17,500 for his runner-up spot.
Marco Fu (Hong Kong) had the highest break of the tournament with a 142. That earnt him £2,000.
Defending champion Mark Selby (England) lost 5-3 to Hamilton in the quarterfinals.
This was the first ranking title for Carter. Swail was also looking for his first title. The popular Irishman will be happy to finally have reached a final though. This was his 10th(!) semi-final appearance.
Carter improves from fourth to third in the provisional rankings. Swail jumps eight places, from 28th to 20th. The top two remain the same. Ronnie O'Sullivan (England) stays on top, followed by Stephen Maguire (Scotland).
The event took place at the Newport Centre, Newport, Wales 16-22 February, 2009. It was the sixth ranking tournament of eight on the 2008/2009 Main Tour. Next up on the snooker calendar is the Honghe Industrial China Open which starts 30th March 2009.
- Welsh Open 2009 (World Snooker)
- Carter storms to Welsh Open title (BBC)
- Carter seals first ranking event (Eurosport)
- Carter Comeback Sinks Swail (Sporting Life)
- Ali Carter clinches breakthrough victory after match of two halves (Times Online)
- Welsh Open 2009 (Global Snooker)
- Ali Carter: Welsh Open Champion (Snooker Scene blog)
- Welsh Open 2009: Captain Carter flies to Welsh glory (Pro Snooker Blog)
- Welsh Open - Newport (Fergal O'Brien)
- Welsh Open Qualifying (Fergal O'Brien)
- Cuefacts - Welsh Open 2009 (Global Snooker)
- SnookerManager: Welsh Open 2009
- Welsh Open 2009 (snooker) (Wikipedia)
- Ali Carter (Pro Snooker Blog)
- Allister Carter (Wikipedia)
- Stephen Lee wins Welsh crown (2006 Welsh Open)
- Neil Robertson wins Welsh Open (2007 Welsh Open)
- Mark Selby wins Welsh Open after impressive comeback (2008 Welsh Open)
- It's Ronnie again in the Northern Ireland Trophy (2008/2009 Main Tour)
- Walden strikes gold in Shanghai Masters (2008/2009 Main Tour)
- John Higgins captures Grand Prix (2008/2009 Main Tour)
- It's three out of three for Neil Robertson with Bahrain Championship win (2008/2009 Main Tour)
- Shaun Murphy wins 2008 UK Championship (2008/2009 Main Tour)
- O'Sullivan wins fourth Masters (2008/2009 Main Tour)