He survived a launch crash without injury on Thursday and decided to call it a day.
Mr Haskins (39) and his climbing companions Ben West, of Australia, and Siddhi Mama and Phemba Sherpa, of Nepal, reached the summit of Manaslu (8136m) on Thursday.
The team was the last to descend to base camp (4900m).
Mr Haskins said on his website on Thursday night the team was "pretty exhausted".
"Essentially, I didn't get to fly from the mountain. I tried but had issues with the wind and made a number of abortive attempts before calling it a day. That and I was the last person on the hill above camp 3. Everybody else was at camp 2 by this stage," Mr Haskins said.
Asked by email yesterday if he would try again, Mr Haskins replied: "No mate - we won't be heading back up the mountain! We are currently the last team here and the icefall is really beginning to fall apart ... I did make a attempt to fly and ended up having a small launch crash.
The wind was slightly katabatic and even though I had plenty of speed with my skis, the canopy did not inflate well at just under 7000m and then my canopy overshot me and I aborted my flight - lots of snow flying and scraping down the mountain sideways on my skis.
"Started to make another attempt (which meant that I had to climb back up and sort out my canopy etc) but then made the choice to not fly," he said.
"So, overall, a successful summit, I learnt a lot about how the canopy reacts at altitude, made a number of flights from lower altitudes and suffered no injuries or frostbite."
The Speedfly8000 attempt was assisted by a Hillary Expedition Grant.
Speedflying involves launching from a mountain and flying and skiing down, using a specialised wing, at speeds of up to 100kmh.
