How long does cooked salmon last in the fridge?

The short version: cooked salmon, refrigerated promptly in a sealed container, is generally good for about three to four days — the same conservative window that applies to most cooked leftovers. Salmon does not get extra time for having been fresh, expensive, or wild-caught; once it is cooked, it is on the same clock as a pot of leftover stew. What makes it worth its own answer is not the number. It is that the usual way people check whether cooked leftovers are still fine — a sniff — is a genuinely worse test for fish than it is for almost anything else in the fridge.

Cooking does not reset how perishable fish is

Raw fish spoils faster than most other proteins because the same enzymes and bacteria that break down its flesh work even in the cold, and oily fish like salmon has fat that starts to oxidise from the moment it is cut. Cooking kills the bacteria that were present at the time and slows the chemistry down, but it does not undo the fact that salmon started this race with a shorter fuse than a chicken breast or a beef roast. That is why cooked salmon sits at the same three-to-four-day line as other cooked leftovers rather than getting a longer one: the cooking buys it parity with chicken, not an advantage over it.

Why your nose is the wrong test here

With milk, a sour smell is reliable evidence — it shows up well before the milk is actually risky, so trusting your nose is a genuinely good strategy. Cooked fish does not cooperate the same way, in either direction. A stronger "fishy" smell on day three is often just the fat in the salmon slowly oxidising in the fridge, which is a real change in quality but not the same thing as spoilage — plenty of salmon that smells more noticeably fishy than it did on day one is still perfectly fine to eat. At the same time, the bacteria that actually matter in fish that has sat too long do not reliably announce themselves with a dramatic smell before they matter, the same asymmetry that shows up with reheated chicken and rice on this site. The result is a smell test that gives you false alarms in one direction and false reassurance in the other. That is exactly why the date it was cooked, not how it smells today, is the number worth trusting here.

What actually shortens or extends the window

How it was cooked and served. Plain grilled, baked or pan-seared salmon holds up for the full three to four days. Salmon finished in a butter, cream or dairy-based sauce, or flaked into a salad with mayonnaise, behaves like the sauce it is sitting in — treat it more like a three-day food, the same way a creamy pasta gets a shorter window than plain noodles.

How fast it cooled. A whole fillet left to cool on a plate on the counter can sit in the food-safety danger zone, roughly 4–60°C, for longer than it looks like from the outside. Flaking it or cutting it into smaller pieces before it goes into a shallow container gets it through that range faster than leaving it whole ever will. Into the fridge within about two hours of cooking is the part that matters most, not anything decided afterward.

Where it came from. Salmon from a buffet, a poke bowl, or a restaurant portion taken home in a box has usually already spent time between hot and room temperature that you cannot see or verify. Treat the moment it left the heat as day zero rather than the moment you reheated it at home, and lean toward the shorter end of the window with anything you did not cook yourself.

Freezing solves the timeline, not the texture

Cooked salmon freezes safely, and the clock genuinely stops while it stays frozen rather than just slowing down — a real option if four days is not realistic. What freezing does not solve is texture. Salmon's flesh is delicate, and ice crystals forming inside it tend to break down the flake on thawing, leaving it noticeably drier and more prone to falling apart than it was fresh out of the pan. Freezing it still submerged in whatever sauce or liquid it was cooked in protects the texture far better than freezing a bare fillet does, if that is an option. Either way, thaw it in the fridge rather than on the counter, and use it within a few months for quality rather than treating the freezer as indefinite storage.

Reheating without drying it out

Salmon has less connective tissue and fat holding it together than chicken does, so it dries out faster under harsh reheating. A low oven, or a covered pan on low heat with a splash of water or stock added, brings it back to steaming hot without pushing all the remaining moisture out of it the way a full-power microwave blast tends to. The safety target is the same as for any other reheated leftover — hot all the way through, not just warm on the surface — but getting there gently is the difference between salmon that is still worth eating and salmon that has turned into fish-flavoured cardboard.

The part that is genuinely hard to keep straight from memory is which container in the fridge is Tuesday's salmon and which is tonight's dinner, especially once both are flaked into similar-looking tubs. Munch logs each batch with the day it was cooked and where it is stored, shared with everyone in the house, so the portion with the least time left is the one that actually surfaces first, rather than the one pushed to the back of the shelf that nobody remembers making.

None of this needs to be memorised as a table of exceptions. It needs one number — three to four days, freeze if that will not happen — and the willingness to let the calendar make the call rather than a smell that, for this particular food, is not telling you what you think it is.