There are 220 calories in a Onion Bun from Jason's Deli. Most of those calories come from carbohydrates (79%).
To burn the 220 calories in a Onion Bun, you would have to run for 19 minutes or walk for 31 minutes.
Let us know what you think! Review the nutrition facts above and then vote on whether you think a Onion Bun is healthy or not.
There are 7 Weight Watchers Freestyle Points, 7 WW SmartPoints and 6 WW PointsPlus in a serving of Onion Bun from Jason's Deli.