If your squid isn’t already cleaned, remove the quill (clear backbone), beak, viscera, and eyes. Rinse under cold water and pat dry. Slice the tubes into ½-inch rings and trim or leave the tentacles based on their size.
Place the flour in a shallow bowl or a large resealable plastic bag. Add the squid rings and tentacles, toss or shake to coat evenly, then shake off any excess flour.
Pour the oil into a deep skillet or fryer to a depth of about 1 to 1½ inches. Heat over medium-high until it reaches 350°F (175°C). To test, drop in a small piece of squid—it should sizzle immediately.
Working in small batches, fry the squid for 1–2 minutes, until golden brown and crisp. Do not overcrowd the pan.
Use a slotted spoon to transfer the fried calamari to a plate lined with paper towels to drain. Season with salt immediately.
Serve hot with lemon wedges on the side for squeezing over. Enjoy!