Preheat the oven to 400F on convection mode (or 425F regular bake) and drizzle the olive oil on a large baking sheet.
Rub both sides of each tortilla in the oil and sprinkle with salt. Bake for 6 minutes on the first side, flip and bake for 3-5 more minutes until deep golden brown and crispy.
In a small bowl, add the lemon juice, garlic, olive oil, salt, and pepper. Whisk until combined.
In a medium bowl, add the cucumber, cabbage, cherry tomatoes, red onion, avocado, and fresh dill. Pour on the dressing and toss until all ingredients are evenly distributed.
Spoon the salad onto the tostadas and sprinkle with flaky salt. Garnish with a sprig of fresh dill on each and enjoy!
