The event in Planica had to be abandoned after just one round due to high winds, with Koch’s jump 242.5 points well clear of Simon Ammann in second.
Norwegian Bardal came into the event knowing that he could only miss out on the World Cup title if he failed to place and Gregor Schlierenzauer won the season-ending event.
And while Bardal was forced to settle for 23rd overall, Schlierenzauer could only manage fourth, handing his rival the Crystal Globe.
Bardal, who succeeds Thomas Morgenstern, becomes only the third Norwegian to win the overall World Cup title, following Vegard Opaas in 1987 and Espen Bredesen in 1994.
Former World Cup champion Ammann picked up second on the day with his jump worth 225.6, just ahead of Robert Kranjec on home snow in third.
Schlierenzauer’s fourth place at least guaranteed him second overall, with Andreas Kofler finishing third.
- Sports & Recreation
- Gregor Schlierenzauer
- Simon Ammann