Thinly slice the cucumber into rounds. Finely slice the green onions.
For extra crunch, toss the cucumber slices with the salt and let stand for 10-15 minutes to draw out moisture. Drain and gently pat dry with a paper towel.
In a large bowl, stir together the honey, soy sauce, rice vinegar, Korean red pepper flakes, and sesame seeds.
Add the sliced vegetables to the bowl with the sauce. Toss gently until evenly coated.
Serve immediately for crisp, fresh cucumber texture, or cover and refrigerate for 15-30 minutes for a stronger flavor.