The fourth season of One Tree Hill began airing on September 27, 2006. The season concluded on June 13, 2007, after 21 episodes. This is the first season to air on the newly formed The CW …

Season 4 of One Tree Hill aired its first episode on September 27, 2006 on the CW network and ended on June 13, 2007 with the season finale. This season consists of 21 episodes.

As graduation day dawns in Tree Hill, some dreams begin as others end. Haley prepares for her graduation speech and her role as a young mother, while Nathan prepares for life without basketball.

Watch One Tree Hill on HBO Max. Plans start at $10.99/month. In a small North Carolina town, two estranged half brothers carry on very different lives.

In an episode shot on location in Honey Grove, Texas as part of a national contest, the teens of Tree Hill mount a rescue mission to save Mouth from his ill-advised road trip with Rachel. Nathan fears for his …

Currently you are able to watch "One Tree Hill - Season 4" streaming on Hulu, HBO Max, HBO Max Amazon Channel or buy it as download on Amazon Video, Apple TV, Fandango At Home.

Stream full episodes of One Tree Hill season 4 online on The Roku Channel. The Roku Channel is your home for free and premium TV, anywhere you go.