Small: $6.25 — 460 Calories
Medium: $9.25 — 910 Calories
Large: $13.50 — 1550 Calories
This sub features a house-made tuna salad—a blend of tuna, mayo, relish, and black pepper. When ordered “Fully Involved,” it comes topped with melted provolone cheese, mayo, lettuce, tomato, onions, and deli mustard, with a signature dill pickle spear on the side.
View Full – Firehouse Subs Menu With Price
💰 Estimated Pricing
Prices vary by location and delivery platform fees.
- Small: $6.25 – $7.50
- Medium: $9.25 – $11.00
- Large: $13.50 – $15.50
📊 Nutrition & Calories
Values are based on the standard “Fully Involved” recipe on a white roll.
| Size | Calories | Total Fat (g) | Protein (g) | Carbs (g) | Sodium (mg) |
| Small (4″) | 460 | 28g | 20g | 31g | 1,090mg |
| Medium (8″) | 910 | 57g | 39g | 62g | 1,840mg |
| Large (12″) | 1,550 | 97g | 71g | 100g | 2,990mg |
⚠️ Allergen List
The Tuna Salad sub contains the following allergens in its standard preparation:
- ✅ Fish (Tuna)
- ✅ Wheat/Gluten (Sub Roll)
- ✅ Milk/Dairy (Provolone Cheese)
- ✅ Egg (Mayonnaise in the tuna blend and as a topping)
- ✅ Soy (Bread and Soybean oil in mayo)
- ✅ Mustard (Deli mustard topping)
FAQs
Is the tuna salad made fresh?
Yes. Firehouse Subs prepares the tuna salad in-house using tuna, mayo, relish, and black pepper.
Is the Tuna Salad sub served hot or cold?
It’s usually served cold. The cheese may be melted on the bread first, then the cold tuna is added.
What does “Fully Involved” mean?
It means mayo, deli mustard, lettuce, tomato, and onion, plus a dill pickle spear on the side.
Is there a gluten-free option?
Yes. You can choose a gluten-free roll (usually Medium only) or order it Sub-in-a-Tub with no bread.
Can I make it a combo?
Yes. Add a drink and a side like chips, a cookie, or chili to make it a combo.
