How Long to Bake Chicken Breast at 350, 375, 400 and 425°F

By The Recipes by Mom kitchen · Last checked October 21, 2026 · Not kitchen-tested; see how our recipes are made

A 6 to 8 ounce boneless, skinless chicken breast baked at 400°F (200°C) will take between 18 and 25 minutes to cook. The single most important factor for both safety and quality, however, is not the time but the final internal temperature. All poultry must reach a minimum internal temperature of 165°F (74°C) to be safe to eat.

The cooking times in any reference table are estimates. Every oven is different, and the exact size and thickness of the chicken breast will change how long it needs. Using the time as a guide and an instant-read thermometer to confirm the temperature is the most reliable method for properly cooked chicken.

How Long to Bake Chicken Breast at 350, 375, 400 and 425°F: time chart

Table source: USDA FSIS approximate chicken cooking times (Chicken from Farm to Table). Ovens, grills and pieces vary: start checking at the low end of each range.

Good to know

• USDA’s chicken chart lists 20 to 30 minutes for a 4-ounce boneless breast half roasted at 350°F
• Pound thick breasts to an even thickness so they cook evenly
• Let chicken rest a few minutes before slicing

What changes the cooking time

Several factors determine how long a chicken breast needs to bake. Adjust your expectations based on these variables:

• Oven Temperature: Higher temperatures result in shorter cooking times. A boneless breast that takes 25 to 30 minutes at 350°F (175°C) will be ready in 15 to 20 minutes at 425°F (220°C).
• Size and Thickness: The times provided are for average 6 to 8 ounce breasts. Smaller pieces will cook faster, while larger, thicker ones will require more time. Uneven thickness is a common issue, as breasts are naturally thicker on one end. This can lead to the thin end overcooking while the thick end is still undercooked.
• Bone-in vs. Boneless: Bones absorb and distribute heat differently than the meat itself, which means bone-in chicken takes longer to cook. A bone-in breast half at 400°F (200°C) needs 35 to 45 minutes, significantly longer than the 18 to 25 minutes for a boneless breast at the same temperature.

How to know when chicken is done

Visual cues like clear juices or white flesh are not reliable indicators of doneness. The only way to be certain that chicken is cooked safely is to use a food thermometer. This simple tool prevents both undercooked, unsafe chicken and overcooked, dry chicken.

To check the temperature, insert the thermometer probe into the thickest part of the breast, being careful not to touch any bones if you are cooking bone-in chicken. The reading should be 165°F (74°C). If the chicken is not yet at temperature, return it to the oven and check again in a few minutes.

This temperature guidance is set by the USDA to ensure harmful bacteria are destroyed. For safety, all poultry, whether it is whole, in parts, or ground, must be cooked to 165°F (74°C).

Tips for better baked chicken

A few simple steps can improve the texture and consistency of your baked chicken breasts.

• Even out the thickness. For more even cooking, we suggest pounding the thicker end of a boneless breast. Place the chicken between two pieces of plastic wrap or parchment paper and gently pound it with a meat mallet or rolling pin until it is a relatively uniform thickness. This helps the entire piece finish cooking at the same time.
• Let the chicken rest. After removing the chicken from the oven, let it rest on a cutting board for a few minutes before slicing or serving. This allows the juices to redistribute throughout the meat. Slicing into it immediately will cause the juices to run out onto the board.
• Prepare the chicken. A simple coating of oil can help prevent the chicken from drying out and encourages browning. Seasoning with salt, pepper, and other spices before baking adds flavor.

Sources and method

• USDA FSIS Safe Minimum Internal Temperature Chart
• USDA FSIS approximate chicken cooking times (Chicken from Farm to Table)
• Time ranges not marked as USDA are typical ranges from standard cooking practice

Last checked October 21, 2026.