Bring a large pot of salted water to a boil. Add pasta and cook according to package instructions until al dente, about 8-10 minutes. Drain and rinse under cold water.

In a large mixing bowl, combine cooled pasta, salmon, cherry tomatoes, cucumber, red onion, and dill. Stir gently to combine.

In another bowl, mix mayonnaise, sour cream, lemon juice, garlic powder, and salt and pepper. Whisk until smooth.

Pour the dressing over the pasta mixture and gently fold until everything is coated.

Cover and refrigerate for at least 30 minutes to chill and meld flavors.

Stir before serving. Enjoy chilled along with crusty garlic bread or a green salad.