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How Long to Cook Flounder

2 cooking methods with times, temperatures, and tips. Safe to 145°F (USDA FSIS).

Bake

Flounder

Cook Time

7-13 min

Set Bake To

400°F

cooking temperature

Safe Internal Temp

145°F

63°C · USDA FSIS

Preheat Bake before cooking

Cooking Tips

  • Season with lemon, garlic, and herbs
  • Fish is done when it flakes easily with a fork
  • Do not overcook or it becomes dry

Rest for 2 minutes before serving

Resting allows juices to redistribute for a moister result.

Bake Temperature Options

TemperatureCook Time
375°F10-16 min
400°Frecommended7-13 min

Adjust Cooking Time by Weight

Adjust for Weight

6oz
3 oz12 oz

Adjusted cooking time

7-13 min

All 2 Ways to Cook Flounder

Kitchen Timer

Kitchen Timer

10:00

10 min preset

min
:
sec

Frequently Asked Questions

How long does it take to cook Flounder?

Flounder typically takes 7-13 minutes using the Oven method at 400°F. Times vary by cooking method and weight.

What temperature should Flounder be cooked to?

Flounder must reach an internal temperature of 145°F (63°C) according to USDA FSIS guidelines. Always verify with a meat thermometer.

What is the best method to cook Flounder?

Flounder can be prepared using 2 different methods: Bake, Stovetop (Pan Sear). The most popular method is Bake.

Can I cook Flounder from frozen?

Yes, you can cook Flounder from frozen. Add approximately 50% more cooking time (multiply by 1.5x). Always verify the internal temperature reaches the safe minimum before serving.

How do I know when Flounder is done?

The most reliable way to check doneness is using an instant-read meat thermometer. Flounder is done when the internal temperature reaches 145°F (63°C). Do not rely on color alone.