Air Fryer Lemon Dijon Salmon (Easy 20-Minute Dinner)

This is one of the best and easiest dinners you can make in the air fryer. If you love salmon as much as I do, there is nothing like a piece of perfectly roasted Air Fryer Lemon Dijon Salmon — tender and flaky on the inside with a bright lemon-garlic-mustard glaze on top.

If you’ve never roasted salmon in the air fryer, you’re in for a treat. The fillet comes out juicy in the center with just enough caramelization on the surface, and the whole thing is on the table in about 20 minutes. It’s light, effortless, and uses ingredients you probably already have in your pantry and refrigerator, which makes it perfect for a busy weeknight or a lazy weekend when you want something delicious without spending all day in the kitchen.

I absolutely love cooking seafood in the air fryer — it does a genuinely perfect job with fish. If you’re new to it, this recipe is the perfect place to start. If you’ve been air-frying salmon for years, this lemon Dijon version deserves a spot in your regular rotation.

Why You’ll Love This Recipe

• Foolproof flavor. The lemon juice brightens, the Dijon adds a gentle tang, and the garlic and thyme round it all out.
• It’s fast. From the fridge to the dinner table in about 20 minutes, start to finish.
• Just 5 main ingredients. Salmon, olive oil, Dijon mustard, garlic, and lemon — plus a few pantry seasonings.
• No babysitting. The air fryer’s circulating hot air cooks the salmon quickly and evenly, so there’s no flipping or fussing required.
• Naturally healthy. High in protein and omega-3s, low in carbs, gluten-free, and easily adapted for keto, Whole30, and dairy-free diets.

Ingredients Needed for Air Fryer Lemon Dijon Salmon

This recipe is incredibly simple — just five core ingredients combine to create one flavorful dish. Here’s what each one brings to the plate:

• Salmon fillets: About 5 to 8 ounces each. Look for fillets of even thickness so they cook at the same rate. Fresh or fully thawed works best.
• Olive oil: Or another high-heat oil such as avocado oil, melted butter, coconut oil, or grapeseed oil. This helps the surface crisp and keeps the fish moist.
• Dijon mustard: Use a good-quality Dijon, since its flavor leads in this dish.
• Garlic: Minced fresh, or jarred minced garlic to save time.
• Lemon juice: Fresh-squeezed gives the brightest flavor.
• Ground thyme: Or substitute parsley, dill, or Italian seasoning.
• Kosher salt and black pepper: To season.
• Lemon wedges: For serving and a final squeeze at the table.

Tip: The step-by-step directions, exact measurements, and full nutrition information are in the printable recipe card at the bottom of this post.

How to Air Fry Salmon (Step by Step)

Craving a restaurant-style meal at home? Air fryer salmon is healthier, easier, and faster than you’d expect. Here’s exactly how to make it.

Step One: Make the Lemon Dijon Sauce and Season

In a small mixing bowl, whisk together the olive oil, minced garlic, Dijon mustard, lemon juice, and thyme. Spread about half of the mixture evenly over the top of each salmon fillet, then season with kosher salt and black pepper. Reserve the rest of the sauce for serving.

Step Two: Air Fry the Salmon Fillets

Lightly spray your air fryer basket or tray to prevent sticking. Place the salmon skin-side down in the basket, leaving a little space between fillets so the air can circulate. Set the temperature to 400°F (200°C) and air fry for 5 to 7 minutes, depending on thickness.

Step Three: Finish and Serve

Spread the reserved lemon Dijon sauce over the cooked salmon and garnish with fresh lemon slices or wedges. Let the salmon rest for a couple of minutes so the juices redistribute, then plate, serve, and enjoy.

Air Fryer Salmon Temperature and Timing

Getting the temperature right is the difference between dry fish and a juicy, flaky fillet. Here are the numbers that matter:

• Cooking temperature: 400°F (200°C).
• Cooking time: 5 to 7 minutes for a standard fillet; up to 8 to 10 minutes for thicker, center-cut pieces.
• Safe internal temperature: 145°F (63°C) at the thickest part, measured with an instant-read thermometer. For a slightly softer, restaurant-style center, many cooks pull salmon at 125–130°F and let carryover heat finish it.

Every air fryer runs a little differently, so check the salmon early the first time you make it and adjust from there.

Step Three: Serving Air-Fried Salmon

Spread the rest of the sauce over the salmon, and garnish with lemon slices/wedges.

Pro Tips for the Best Air Fryer Salmon

• Preheat the air fryer to 400°F for 3 to 5 minutes before cooking. A hot basket gives the salmon a better sear and helps it cook quickly and evenly.
• Brush the salmon with oil to help it crisp. Olive oil, avocado oil, or room-temperature butter all work.
• Season with restraint. Air frying intensifies flavors, so go a little lighter on salt and spices than you think you need.
• Cook skin-side down. If your fillet has skin, this keeps the flesh moist and crisps the skin.
• Don’t overcrowd the basket. Leave space between fillets so the hot air can circulate and cook everything evenly.
• Let it rest for a few minutes before serving so the juices stay in the fish instead of running onto the plate.

Variations to Try

• Garlic Butter: Use melted butter in place of olive oil for a richer finish.
• Honey Dijon Salmon: Whisk a teaspoon of honey or maple syrup into the sauce for a sweet-savory glaze.
• Spicy Lemon Dijon: Add a pinch of red pepper flakes or a dash of hot sauce.
• Herb-Forward: Swap the thyme for fresh dill, parsley, or chives.

What to Serve with Lemon Dijon Salmon

This salmon pairs with almost anything. A few favorites: crispy Air Fryer Steakhouse Potatoes, a simple green salad, roasted asparagus or Brussels sprouts, or a scoop of rice. For a full air-fryer dinner, round it out with one of the easy sides from the Fork To Spoon air fryer collection.

How to Store and Reheat

• Refrigerate: Store leftover salmon in an airtight container in the fridge for up to 3 days.
• Freeze: Wrap tightly and freeze for up to 2 months; thaw overnight in the fridge before reheating.
• Reheat: Warm in the air fryer at 350°F for 3 to 4 minutes until just heated through. Avoid the microwave, which can dry it out and overcook the fish.

Frequently Asked Questions

Is it safe to cook salmon in an air fryer? Yes. Cooking salmon in an air fryer is safe as long as you follow proper food-safety guidelines. Use an instant-read thermometer to confirm the thickest part of the fillet reaches 145°F (63°C) before serving.

How long do you air fry salmon? Most fillets take 5 to 10 minutes at 400°F, depending on thickness and your air fryer model. Start checking at the 5-minute mark.

Do I need to flip the salmon while it cooks? No. The circulating air cooks both sides, so flipping isn’t necessary. If you want extra crispiness on both sides, you can flip it halfway through.

Should I remove the skin before cooking? It’s up to you. Leave the skin on for crispy skin and easier handling, or remove it before cooking if you prefer skinless salmon.

Can I cook frozen salmon in the air fryer? Yes. Frozen salmon will take a few extra minutes — add roughly 3 to 5 minutes and confirm it reaches 145°F internally. Pat it dry and season once the surface has thawed slightly.

What are good seasoning options for air fryer salmon? Salt, pepper, garlic powder, lemon juice, dill, and paprika all work beautifully. Experiment with herb and spice blends to find your favorite.

More Air Fryer Salmon and Seafood Recipes

If you loved this dish, try these next:

• Air Fryer Maple Glazed Salmon
• Air Fryer Salmon With Mushroom Sauce
• Air Fryer Lemon Dill Salmon
• The Best Air Fryer Fish Recipes