In a bowl, mix gochujang, garlic, soy sauce, honey, rice vinegar, and sesame oil. Add the salmon fillets and coat them evenly. Cover and refrigerate for at least 15 minutes.
Place sliced cucumber in a bowl with salt. Let sit for 15 minutes to draw out moisture. Rinse briefly and pat dry with a paper towel.
Add garlic, gochugaru, soy sauce, sugar, and rice vinegar. Toss to combine. Finish with chopped green onions and mix again.
Preheat air fryer to 375°F (190°C). Cook marinated salmon for 8–10 minutes, or until internal temperature reaches 145°F (63°C).
Serve salmon over a bed of rice, add a side of cucumber salad, and sprinkle sesame seeds on top.
Enjoy!