Extras are where a $9 sub becomes a $14 sub. Subway's base prices are competitive; its add-on pricing is not, and it varies more between franchises than almost anything else on the menu. Here is what each upgrade typically costs, what it adds nutritionally, and which ones are genuinely good value.

Add-on prices in 2026

Extra6-inchFootlongCalories added
Double meat$2.50–$4.50$4.00–$7.50+60–220
Extra cheese$0.60–$1.25$1.00–$2.00+40–80
Avocado$1.50–$2.50$2.50–$4.00+60–120
Bacon$1.25–$2.25$2.00–$3.50+80–160
Extra vegfreefree+5–25
Extra saucefreefree+30–110
Sauce cup on the side$0.30–$0.75$0.30–$0.75varies
Make it a meal (chips + drink)$2.99–$4.29$2.99–$4.29+300–500

Franchisees set these, so treat the ranges as a sanity check rather than a quote. The app shows your store's real numbers before you pay — see the app guide and menu prices.

Which extras are worth it

Worth paying for

  • Double meat on lean proteins. On turkey, roast beef or rotisserie chicken it takes a sub from ~24 g to ~45 g protein for a couple of dollars — cheaper per gram than most protein bars.
  • Avocado on a veg-forward build. The only add-on that changes the texture of a whole sandwich; essential on the Veggie Delite.
  • Extra cheese on a toasted sub. Under a dollar for a noticeably better sandwich. Options are ranked in cheese types.

Usually not

  • Double meat on Meatball or Steak. The fillings are already heavy and the bread cannot hold it — see Meatball Marinara.
  • Bacon on a cured-meat sub. Adding bacon to a B.M.T. mostly adds sodium.
  • Make it a meal, when a drink is not needed. Chips alone usually price lower than the combo uplift.

The free upgrades people forget

  • Every vegetable is free, including extra of any one of them.
  • Red wine vinegar, oil, salt, pepper and all sauces are free on the sandwich.
  • Toasting is free, as is a second pass through the oven if the cheese has not melted.
  • Asking for meat "spread out" rather than stacked costs nothing and makes every bite even.
  • Extra bread ends or a cut into quarters for sharing — no charge.

Loading free veg is also the cheapest way to make a 6-inch feel like a Footlong; the value maths is in Footlong vs 6-inch.

How to keep the bill down

Order in the app so the extras total is visible before you commit, stack a coupon or offer (see coupons and discounts), and buy one Footlong with double meat rather than two 6-inch subs when feeding two people. Rewards points are earned on the extras too — details in MVP Rewards.

FAQ

How much is double meat at Subway?

Usually $2.50–$4.50 on a 6-inch and $4.00–$7.50 on a Footlong, depending on the protein and store.

Is avocado extra at Subway?

Yes, always a paid add-on — roughly $1.50–$2.50 on a 6-inch.

Are extra vegetables free?

Yes, and so are extra sauces on the sandwich. Sauce cups on the side usually cost a little.

Does double cheese cost more?

Yes, but it is the cheapest meaningful upgrade on the board — often under a dollar.