Grilling salmon in foil generally takes about 10 to 20 minutes, depending on the thickness of the fillet and grill temperature.

• Most sources recommend grilling salmon foil packets over medium-high heat (around 375°F to 425°F) for approximately 10 to 18 minutes until the salmon flakes easily with a fork or reaches an internal temperature of 145°F, which is considered fully cooked by the FDA

• A common approach is to grill for about 14-18 minutes with the foil packet closed, then optionally open the foil for the last 3-5 minutes to lightly brown the top

• Thinner fillets (around 1 inch thick) may take closer to 10-12 minutes, while thicker fillets (1.5 inches or more) can take up to 20 minutes

• Using a meat thermometer inserted into the thickest part of the salmon is the best way to ensure doneness, aiming for 145°F internal temperature

• After grilling, letting the salmon rest for about 5-10 minutes allows juices to redistribute for optimal flavor and texture

In summary, expect to grill salmon in foil for roughly 10-20 minutes at medium-high heat, adjusting for thickness and confirming doneness with a thermometer or flake test.