Cook the pasta according to package directions, then drain and let it cool completely.
In a large bowl, combine cooked pasta, cucumber, cherry tomatoes, red onion, dill, and feta cheese.
In a small bowl, whisk together olive oil, red wine vinegar, lemon juice, salt, and pepper.
Pour the dressing over the salad and toss to combine.
Chill for at least 30 minutes before serving for best flavor.