Reheated fried fish can taste fresh again if you get the timing and temperature right in your air fryer. So, how long do you reheat fried fish in an air fryer? The short answer is about 4 to 6 minutes at 350°F to 375°F, depending on the thickness of the fish and whether it still has the breading on it.
That quick window is what makes the air fryer the best tool for this job. It circulates hot air fast, so the crust gets crisp again without steaming the fish into mush.
Below you’ll find exact times, temps, and a simple step-by-step method that works for cod, tilapia, catfish, salmon, and just about any leftover fried fish you have in the fridge.
Why The Air Fryer Works Better Than A Microwave Or Oven
A microwave heats unevenly and traps moisture. That moisture turns crispy batter into a soggy, rubbery mess in under a minute.
A regular oven can work, but it takes 15 to 20 minutes to preheat and another 10 to 15 minutes to reheat the fish. That’s a long wait for a few fillets.
The air fryer sits in the middle. It’s fast like a microwave but dry like an oven, so the coating re-crisps while the inside stays moist.
- Microwave: fast but soggy results
- Oven: good texture but slow
- Air fryer: fast and crispy, the best of both
How Long Do You Reheat Fried Fish In An Air Fryer
Here are the general time and temperature ranges. Use these as your starting point, then adjust based on your specific fillets.
Standard Reheating Times And Temperatures
- Thin fillets (under 1/2 inch): 350°F for 3 to 4 minutes
- Medium fillets (1/2 to 1 inch): 350°F for 4 to 6 minutes
- Thick fillets or fish sticks: 375°F for 5 to 6 minutes
- Frozen leftover fried fish: 375°F for 8 to 10 minutes
Flip the fish halfway through the cook time. This helps both sides crisp up evenly and prevents one side from burning.
Adjusting Time Based On The Breading
Heavy beer batter needs a slightly lower temp, around 350°F, so the outside doesn’t burn before the inside warms through. A light panko or cornmeal crust can handle 375°F without a problem.
If your fish was fried in a thick batter, add one extra minute and check it. If it was dusted in a thin coating, stick to the shorter end of the range.
Step-By-Step: Reheating Fried Fish In The Air Fryer
- Let the fish sit at room temperature for 5 to 10 minutes. Cold fish takes longer to heat through and can dry out.
- Preheat your air fryer to 350°F for 3 minutes. Preheating matters more than most people think.
- Lightly spray the basket with oil to stop sticking. Don’t soak the fish in oil, just a light mist.
- Place the fillets in a single layer. Leave space between them so air can move around each piece.
- Cook for 3 minutes, then flip each piece with tongs.
- Cook another 2 to 3 minutes, until the coating is crisp and the inside is hot.
- Check the internal temperature. It should reach 145°F for safety.
- Rest for 1 minute before serving so the heat spreads evenly.
Total time from fridge to plate: about 10 minutes. That’s hard to beat.
Common Mistakes That Ruin Reheated Fried Fish
Overcrowding The Basket
If you pile the fish on top of each other, the air can’t reach the surfaces. You’ll end up with pale, soft spots. Cook in batches if you have a lot of fish.
Using Too Much Oil
Some people douse the fish in oil thinking it will help. It doesn’t. It just makes the crust greasy and can cause smoking. A light spray is all you need.
Setting The Temperature Too High
Going above 400°F burns the outside while the inside stays cold. Stick to 350°F to 375°F for the best balance.
Not Flipping The Fish
The bottom side sits against the basket and gets less air flow. Flipping halfway fixes this simple problem.
How To Keep The Fish Moist Inside
The biggest fear with reheating fried fish is dryness. Here are a few tricks that help.
- Wrap the fish loosely in foil for the first 2 minutes, then open it for the last few minutes to crisp up.
- Spritz with a little water before cooking. A tiny amount of steam keeps the inside tender.
- Don’t overcook. Pull the fish as soon as it hits 145°F internally.
- Serve right away. Reheated fish loses quality the longer it sits.
Foil works well for thick fillets. For thin ones, skip the foil and go straight to the basket.
Can You Reheat Fried Fish More Than Once
No. Reheat it once, and only once. Each reheating cycle dries the fish out more and raises the risk of foodborne bacteria growth.
If you have a large batch, only reheat what you plan to eat. Keep the rest in the fridge in an airtight container and reheat a fresh portion the next time.
Leftover fried fish keeps in the fridge for 3 to 4 days. After that, toss it.
Storing Leftover Fried Fish The Right Way
How you store the fish affects how well it reheats. Follow these rules.
- Let the fish cool to room temperature first, but no more than 2 hours.
- Wrap each piece in paper towel, then place in an airtight container. The towel soaks up extra oil and moisture.
- Store in the fridge, not the freezer, if you plan to eat it within 3 days.
- For longer storage, freeze in a single layer, then transfer to a freezer bag.
Frozen fried fish reheats fine in the air fryer. Just add 4 to 5 extra minutes to the cook time and flip twice instead of once.
What About Different Types Of Fish
Not all fish reheat the same way. Here’s a quick guide.
Cod And Haddock
These flake easily, so handle them gently. Use 350°F for 4 minutes and flip carefully with a spatula.
Tilapia
Thin fillets cook fast. Start with 3 minutes at 350°F and check. They dry out quickly if you go too long.
Catfish
Catfish holds up well thanks to its firmer texture. Use 375°F for 5 minutes for a crispy cornmeal crust.
Salmon
Fried salmon is richer, so it stays moist. Reheat at 350°F for 4 to 5 minutes. Watch for the crust turning dark.
Fish Sticks And Nuggets
These are the easiest. Spread them in a single layer at 375°F for 4 to 5 minutes, shaking the basket once halfway.
Final Tips For Perfect Results Every Time
Keep a few things in mind and you’ll get consistent results.
- Every air fryer runs a little different. Your first batch is a test run. Note the time that worked.
- Smaller air fryers need less time. Larger ones may need an extra minute.
- Always check the internal temp with a meat thermometer. 145°F is the target.
- Serve with a squeeze of lemon or a side of tartar sauce to bring back that fresh flavor.
- Don’t stack the fish. One layer, always.
With these times and temps, your leftover fried fish will come out crispy, hot, and close to what it tasted like the first time. The air fryer makes it simple, and it only takes a few minutes.