Made it through Regional Qualifying and Final Qualifying, both at the Prince’s course adjoining Royal St George’s.
First the 31-year-old topped the leaderboard in RQ with a five-under-par 67, then over two rounds his scores of 72 and 70 were good enough for a share of second.
His progress was charted all the way as one of four players chosen for the R&A’s “Road to The Open” series.
“Obviously to have it all on film is amazing and I’ll be boring my grandkids with it at some point,” said Forgan.
“I’m looking forward to watching it back – the highs and lows as there was a bit of everything in there.”
After a double-bogey on the 16th hole of his second round cost him top spot, he had to make a 10-foot putt for par on the last to avoid a play-off.
His first major comes a month before his wife is due to give birth and he added: “It’s obviously always been a dream and to play The Open in a couple of weeks is going to be amazing. It’s proof that people can do it and why people enter. It’s very, very surreal to be honest.”