Air Fryer Reference
Reheat Salmon in an Air Fryer
Reheat · leftover
- Temperature
- 300 °F
- 149 °C
- Total time
- 4 min
- Flipping
- Not needed
- Serving
- 1–2 leftover 4–6 oz fillets or steaks in a single layer with ½-inch gaps. A 5-qt basket fits 2 pieces; a 4-qt basket fits 1.
- leftover
Doneness
The flesh at the thickest point is opaque pink-orange and separates cleanly into flakes at a fork test — not translucent (under-warmed, below 145 °F) and not chalky-grey (over-cooked past 160 °F). The edges show a faint golden re-warm; the skin is lightly crisp on the bottom. Lemon-dill aroma should be bright and fresh. Thicker steaks pull at 5 minutes; salmon cakes and meatballs also pull at 5 minutes.
Technique
Do not preheat — a cold start is essential for delicate fish. Place fillets skin-side down on the basket grate. Drizzle 1 tsp lemon juice (or reserved cooking juices) over each fillet and lay a fresh dill sprig on top before reheating. Set 300 °F (149 °C) for 4 minutes with no flip — flipping risks breaking the flake. At the 4-minute mark, probe the thickest point with an instant-read thermometer. 145 °F means it's ready; 125–140 °F means it needs another 60 seconds. For a 1–1½-inch thick salmon steak, cook 5 minutes total. For salmon meatballs or cakes, cook 5 minutes and flip at 2½ minutes. Sugar-glazed salmon (teriyaki, honey, maple) scorches at 300 °F — drop to 275 °F and cook 5 minutes instead.
Watch out for
- Use 300 °F, not 400 °F. Salmon's delicate omega-3-rich flesh over-cooks faster than almost any other protein. At 325 °F or higher the surface temperature races past 145 °F within 60 seconds, turning the fillet chalky, dry, and strongly fishy-smelling.
- Probe the thickest point to confirm 145 °F (USDA safe temperature for leftover fish). The surface can look done while the centre is still at 110–120 °F, especially on thicker fillets or steaks. When probing a steak near a bone, avoid touching the bone — it reads 10–15 °F hotter than the surrounding flesh.
- Drizzle lemon juice (and a dill sprig if you have one) over the fillet before reheating. Fish oils oxidise in the fridge, and without an aromatic refresh the reheated fish can fill the kitchen with a strong fishy smell. The lemon volatilises during the 4-minute cook and masks the oxidised aroma.
- Skip the air fryer for hot-smoked salmon (e.g. Acme, Ducktrap) and cold-smoked lox entirely — the cure and smoke break down unpleasantly at 300 °F, and cold-smoked lox is intended to be served cold. For cream-sauce salmon leftovers, reheat on the stovetop over low heat with 1–2 tablespoons of added cream; the fat emulsion breaks in a dry air fryer.