Port of Subs under 300 calories: 38 orders, ranked

Of the 197 single orders we track at Port of Subs, 38 come in at or under 300 calories — 19%. The most protein in one item under 300 is the Grilled Chicken Caesar Salad, 37 g for 260 calories; the most filling by protein and fiber per calorie is the Grilled Chicken Spinach Salad (35 g protein, 3 g fiber, 230 cal). 24 entrées fit under 300; 142 do not.

Source: Port of Subs nutrition guide (official) · Data refreshed October 16, 2026

• 38 orders under 300
• 37g most protein in one item
• 37g protein in a full meal
• 142 entrées over 300

As of October 2026, 38 of the 197 Port of Subs single orders we track come in at or under 300 calories, and the most protein in a complete Port of Subs meal under 300 is 37 g (A Grilled Chicken Caesar Salad and a 21-ounce Coca-Cola Zero Sugar).

Three complete Port of Subs meals under 300 calories

Under 300, the most-protein meal is built on the Grilled Chicken Caesar Salad (260 cal), which leaves 40 calories for its sides and drink. One meal-sized entrée, up to two different sides and a drink — the MinMax app's meal and the best under the cap, drink included (water only where no published drink fits; the lightest meal takes a zero-calorie drink, or water).

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Every Port of Subs order under 300 calories, ranked by protein

Single orders only — no desserts, kids' meals, combos, sauces or toppings — by grams of protein, then calories. The median order under 300 is 260 calories and 24 of the 38 are entrées. Figures as Port of Subs published them, rounded to whole numbers (how we check them).

What 300 calories buys at Port of Subs

The 8 lightest orders under 300: Spinach Salad (50), Garden Salad (60), Caesar Salad (80), Baked Lay's BBQ (140), Baked Lay's Original (140), Cheetos Original (160), Cheetos Crunchy Hot (170) and Maui Onion (190).

What doesn't fit under 300

142 of 166 Port of Subs entrées are over 300 calories; the lightest of them, the Classic Sub #14 - Lettuce Wrap, misses by 10 calories at 310. With more room, see Port of Subs under 400. Closest misses: Classic Sub #14 - Lettuce Wrap (310), Classic Sub #3 - Lettuce Wrap (320), Classic Sub #4 - Lettuce Wrap (320), Classic Sub #14 - Salad (330) and Classic Sub #16 - Lettuce Wrap (340).

More at Port of Subs

• Port of Subs calories & nutrition (394 items listed)
• Port of Subs under 400 calories (75 orders)
• Port of Subs under 500 calories (90 orders)
• Port of Subs under 600 calories (113 orders)
• High-protein Port of Subs orders (100 items)
• Port of Subs calorie calculator (build an order under your cap)

Under 300 calories at other chains

The same cap at 3 Subs & sandwiches chains, or the cross-chain pillar: fast food under 300 calories.

• QuikTrip under 300
• Sheetz under 300
• Cousins Subs under 300