The couple, who got engaged last year but declined to ever officially confirm the news, was spotted wearing matching rings on their wedding fingers as they arrived at LAX together just weeks after they picked up their marriage licence, reported Radar Online.
The couple were spotted picked up their marriage licence on October 16.
"Evan and Jamie were at the Beverly Hills City marriage licence office around lunchtime today. I had to do a double take as at first I didn't recognise them. They looked like any other young couple in love.
"They were just waiting in line like regular people, holding hands and at one point Jamie leaned over and kissed Evan -- they certainly looked excited and happy," an eyewitness said.
The 'Mildred Pierce' actress first started dating the 'Billy Elliot' star in 2005 after they met on the set of Green Day's music video for 'Wake Me Up When September Ends' and got matching tattoos but split a year later.
They rekindled their romance in 2010 after Wood ended her seven-month engagement to rocker Marilyn Manson.