How to Reheat Leftover Fish in An Air Fryer

Air fryer with fish inside

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If you have leftover seafood in your fridge then heating it is essential before you put it on your plate. Fish and fish foods are pretty easy to attract nasty bacteria. So, eating it cold is a no-go. Now, if you don’t have a microwave but happen to have an air fryer then you might wonder, how to reheat leftover fish in an air fryer? 

To reheat leftover fish in an air fryer, you’ll only need to add a bit of water at the base of the dish or butter the fish’s top for moisture to retain. It is also recommended to wrap the fish with tin foil to prevent it from drying out. It would be best if you cooked it for six minutes at 360 ̊ F (180˚ C). 

In this article, I’ll highlight the important things you should remember while reheating your leftover fish in an air fryer, along with the correct way of doing it. So, make sure to stick around until the end to get the complete picture. 

Is It Okay to Reheat Fish in An Air Fryer? 

Yes, it’s entirely okay to reheat fish in an air fryer. Besides, it’s also what the experts recommend you to do as it will stop you from overcooking the fish and keep the coating on your fish crispy. Working with fish isn’t the same as meat, so you’ll need to be extra careful while cooking and reheating it. 

Reheating food in the air fryer is a better alternative to a microwave oven because leftovers often taste better if you use an air fryer to reheat them. But if you’ve cooked your fish with sauce, I don’t recommend using an air fryer to reheat it as it might not do a good job. 

The best part of using an air fryer to reheat your leftovers is that it’s not at all time-consuming and is incredibly swift. Besides, it also preserves the flavors and textures of the food. 

How to Reheat Leftover Fish in an Air Fryer?

Before you reheat your fish, you should let it cool down thoroughly first. I recommend storing the fish inside an airtight container in your fridge. The reheating procedure may be different for the kind of fish you’ve cooked. 

The ideal temperature would be 180 ̊Celsius or 360 ̊ Fahrenheit to reheat some leftover fish. It’s best to start at 160 ̊, then increase it to 180 ̊. 

I recommend starting at 160 ̊to make sure that the fish fillets entirely heat from the inside. And then increasing it to 180 ̊will give your fish a crispy texture. 

The whole process of reheating does take less time than you’d think. In just under seven minutes, the entire process will be over. You’ll have to turn the fish over if you don’t want the other side to be soggy. 


Firstly, you’ll need to spray the air fryer with extra virgin olive oil. It’s best to avoid preheating as it might cook the fish too quickly. But if you want to preheat, put the temperature at 180 ̊ Celcius for three minutes. Next, you’ll need to put the fish in the air fryer basket. 

Then, you’ll have to fry it for four minutes at 160 ̊ Celsius. After four minutes, you’ll have to turn the fish on the other side and cook for another couple of minutes. But this time, you’ll want to bump up the temperature to 180 ̊ Celsius. 

When the air fryer’s beep sounds, you have to ensure that the fish’s middle is piping hot. This procedure is excellent for leftover battered or breaded fish. As I’ve already mentioned, remember to wrap the fish with tin foil to prevent the fish from sticking to the basket and cook it through. Now the fish is ready to serve. 

Once you put a cooked fish in the fridge, you’ll have about three days to reheat and eat it. I don’t recommend keeping the fish inside the refrigerator longer than that. Additionally, if you want to reheat frozen fish sticks, you can follow the same procedure and enjoy it with sandwiches. 

Precautions to Take while Reheating 

When you’re using an air fryer, you have to remember to take necessary precautions so that the food reheats correctly. Here are a few points you have to look out for to ensure that everything goes the way you want them. 

Add Enough Oil

Extra virgin olive oil

Air Fryers generally don’t require much oil, and in some cases, you won’t even need to add oil to the basket. But in the case of fish or similar food items, you’ll want to add enough oil to make sure you don’t end up with dried texture in your food. 

It’s never a good idea to use cooking sprays that include propellants as they may destroy the non-stick trays or baskets. An air fryer moves the food around inside, which is similar to a conventional oven. 

But with all these movements, your fish may lose moisture. So, you’ll want to add one teaspoon of extra virgin olive oil to bring the water and flavor back. Also, I recommend using a mister instead of a sprayer to preserve the fryer’s shelf life. 

Don’t Overfill the Air Fryer

When you’re reheating your fish, I advise you to do it in batches. You’ll want to reheat one serving first and then another serving if you’re reheating for two or more people. 

Doing so will cook your food evenly. Besides, I strongly advise against filling the basket more than halfway as it will interfere with the airflow and keep some parts uncooked. It could also damage the machine or take longer than usual to reheat. 

Always Keep Checking

When you’re reheating the fish, you have to keep checking as it cooks. Air fryers have a very ergonomic design where you can open it up, give the basket a few shakes, and put it back in. Though the cooking window is small, you’ll want to check it once after two minutes. 

If the fish is cooking faster than you’d expected, turn the heat down a bit. This step will let the food cook evenly inside at the correct speed. 

Turning the Fish Fillets

Turning the fish is an essential step, and you don’t want to skip it. As I have mentioned earlier, ignoring it might result in one crispy side and one soggy side. Besides, the fillets could also stick to the basket. 

So, when you’re checking the fish after two minutes into reheating it, you can turn the fish over. 

Be Careful Using Your Air Fryer

You must place your air fryer on a safe surface and unplug it once you’re done. Also, you have to be careful not to block the airflow of the air fryer. 

It’s best not to use additional accessories that don’t come with your air fryer. Additionally, the food will not require a lid, so it’s best not to add any. 

As you’ll be using the air fryer very often to try different recipes or reheat the leftovers, you’ll want to maintain the machine properly. These tips are applicable for reheating food like chicken, fries, pizza, onion rings, and vegetables. 


As you can see, using an air fryer to reheat your fish is not only possible but also an excellent idea. In this article, I talked about how to reheat leftover fish in an air fryer and the precautions you have to take while you’re at it. Hopefully, when you try it, you won’t be disappointed. 

Thanks for reading till the end. And, happy cooking! 

Chef Rooney

I like to cook. It makes me happy, and I know it does the same for others. If you ever want to learn how to make a great dish, just ask!

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