Flank steak is a popular cut of beef that is known for its rich flavor and texture. If you’re wondering how long it takes to cook flank steak in the oven, you’ve come to the right place. In this article, we’ll explore the best way to prepare flank steak in the oven and give you an idea of how long it should take.

Preparing Flank Steak

Before we get into cooking times, let’s talk about preparing your flank steak. To make sure your steak is tender and juicy, it’s important to marinate it for at least a few hours before cooking. You can use your favorite marinade recipe or simply season your steak with salt, pepper, and garlic powder.

Once your flank steak has been marinated, it’s time to preheat your oven. Set the temperature to 400°F.

Cooking Time

The cooking time for flank steak in the oven will depend on a few factors such as thickness and desired level of doneness. Here are some general guidelines:

  • If your flank steak is 1 inch thick or less, cook for 10-12 minutes for medium-rare or 12-14 minutes for medium.
  • If your flank steak is thicker than 1 inch, cook for 14-16 minutes for medium-rare or 16-18 minutes for medium.

Checking Doneness

It’s important to check the internal temperature of your flank steak before removing it from the oven. Use a meat thermometer inserted into the thickest part of the meat to check doneness.

  • For medium-rare, the internal temperature should read between 130°F and 135°F.
  • For medium, the internal temperature should read between 135°F and 145°F.

Resting the Steak

Once your flank steak has reached the desired level of doneness, remove it from the oven and let it rest for 5-10 minutes. This will allow the juices to redistribute throughout the meat, resulting in a more tender and flavorful steak.


In conclusion, flank steak can be a delicious and easy-to-prepare meal when cooked in the oven. By following these guidelines, you should be able to achieve a perfectly cooked steak every time.

Remember to marinate your steak beforehand, check the internal temperature with a meat thermometer, and let it rest before slicing. Happy cooking!