Thinking about how to reheat fries in an air fryer for the next time you have leftovers? You’re in the right place for all the tips to make your homemade or fast food fries just as crispy as day one. Turn to the air fryer as the best method for giving fries a second life in just a couple minutes.

Crispy french fries are cooked in a Ninja air fryer.

Can I reheat fries in the air fryer?

Of course you can reheat fries in the air fryer—it’s the best way to do it! The air fryer method really only takes a couple of minutes, and you’ll get the same delicious fries every time. Whether you have a toaster oven air fryer or basket air fryer, the cooking time is the same.

How to Reheat Fries in the Air Fryer

The reheating process in the air fryer depends on the thickness and quantity of fries. Either way, your fries will take a very short amount of time. Whether they are leftover soggy fries, curly fries, waffle fries, steak fries, or thin fries, follow these 4 simple steps for the best results:

Pro Tip: If you’re looking to buy this amazing kitchen appliance, consider my favorite trusty air fryer.

Exterior of the air fryer.

Here are the simple steps for reheating fries:

  1. Preheat air fryer to 350°F.
  2. Once your air fryer is hot, add the fries to the air fryer basket or tray in a single layer. You might have to reheat your fries in batches if they don’t all fit.
  3. Cook thin fries for 2-3 minutes max, and thick fries for 3-5 minutes shaking them every 1-2 minutes.
  4. If they aren’t as crispy as you’d like, keep them in the air fryer for an extra minute.

Pro Tip: If your fries weren’t originally deep-fried, then brush on a little bit of olive oil for a crispy finish.

Why is air frying leftover fries the best way?

Air frying leftover fries activates the oil that’s already on the fries helping you crisp them up when they’re day-old. There is no need to coat them again with extra oil because the hot air of the air fryer does that work for you.

What are the benefits of using an air fryer to reheat fries?

​There are many benefits to air frying leftover fries, one being that you get that crispy almost McDonalds -like texture. Additionally, it takes less than 10 minutes! It’s such an easy way to whip up a side dish to any meal no matter the type of fries. 

Sweet potato fries are placed in an air fryer.

Fries Expert Tips & Tricks

  • Don’t overcrowd your air fryer. Make sure you place your fries in a single layer and batch cook them if you don’t have enough room for all of them.
  • Bring your leftover fries from a restaurant to room temperature before adding them in the air fryer. This prevents a soggy fry.

How to Store Fries

There are two ways to store fries:

  1. In an airtight container or bag for up to 3 days, OR
  2. In the freezer for up to 3 months after the fries have cooled completely. 
The crispy sweet potato fries are in one layer in the air fryer.

Fries FAQ

How long do leftover fries last?

If stored in an airtight container or bag, they will last up to 3 days in the fridge.

What is the best way to reheat fries?

Using an air fryer is the best way because the hot air circulates all around the fries, reviving their crispiness.

What can I do with leftover fries?

Use leftover fries for salad toppings, soups, and pizzas. Create nacho fries or casseroles or put them inside burgers, sandwiches, and burritos. 

Are leftover fries good in the air fryer?

Yes, thanks to the air fryer, you can enjoy restaurant-style fries at home in just a few short minutes!

How do you make old fries crispy again?

Reheat your fries in an air fryer or oven at a low temperature (350°F) for just a few minutes to crisp them back up.

Can reheating fries in the air fryer dry them out?

No, as long as you place your fries in a single layer, an air fryer will not make them soggy or dry.

Is it ok to reheat fries?

Yes, it’s completely safe to reheat already cooked fries. 

Why are my fries not crispy after reheating them?

The temperature might be too low, or the air fryer basket might be overcrowded. 

Can you reheat leftover McDonald’s fries?

Yes, simply preheat your air fryer to 375°F for 5 minutes. Then, add the fries in for 10 minutes.

Is it good to spray oil on leftover fries before reheating?

An initial layer of spray oil can enhance leftover fries’ crispiness, but too much oil will make them soggy.

A pile of air fryer french fries are shown on a white plate on the counter.

The Best Fries Recipes

Air Fryer Tips & Tricks

Crispy french fries are cooked in a Ninja air fryer.
Print Recipe
5 from 2 votes

How to Reheat Fries

Thinking about how to reheat fries in an air fryer for the next time you have leftovers? You're in the right place for all the tips to make your homemade or fast food fries just as crispy as day one.
Prep Time5 minutes
Cook Time5 minutes
Total Time10 minutes
Course: Appetizer, Dinner, dip, lunch, Side Dish, sides, Snack
Cuisine: American
Author: London Brazil

Equipment

Instructions

  • Preheat air fryer to 350°F.
  • Add the fries to the air fryer basket or tray in a single layer. If they don't all fit in a single layer, reheat them in batches.
  • Cook thin fries for 2-3 minutes max, and thick fries for 3-5 minutes shaking them every 1-2 minutes.
  • If they aren't as crispy as you'd like, keep them in the air fryer for an extra minute.

Notes

If your fries weren’t originally deep-fried, then brush on a little bit of olive oil for a crispy finish.
5 Secrets to Healthier Family Dinners
Tips & recipes for getting yummy — and healthy — meals on the table.

You May Also Like

Thanks for
Stopping By!

I’m London! Join me as we cook up nourishing meals for you and your loved ones and learn a few healthy cooking tips and tricks!

Leave a comment

Your email address will not be published. Required fields are marked *

Recipe Rating