Preheat your oven to 400°F and line a baking sheet with parchment paper.
Toss the asparagus spears with the olive oil, half of the sea salt, and half of the black pepper on the prepared baking sheet.
Roast the asparagus for 12-15 minutes until tender and slightly charred at the tips.
Season the salmon fillet with the remaining sea salt and black pepper.
Heat a non-stick skillet over medium-high heat and sear the salmon for 4-5 minutes per side until the internal temperature reaches 145°F.
Remove the salmon from the pan and set aside; reduce the heat to low.
Add the minced garlic to the skillet and sauté for 30 seconds until fragrant.
Stir in the heavy cream, lemon juice, and fresh dill, simmering for 1-2 minutes until the sauce thickens slightly.
Plate the salmon alongside the roasted asparagus and spoon the creamy dill sauce over the fish.