Costa Del Mar Promo Codes in October 2026

New email subscribers get a welcome code for their first order over $50. Sign up with your email, and the code lands in your inbox. Recent offers have run around $10 to $15 off, so check your email for the exact amount before you check out.

Here is a smart move before you subscribe. The welcome code is one-time use only, so if there is a sitewide code live, use that one first, then sign up for email and save your welcome code for a later order. That way you score both discounts instead of just one.

Staying subscribed pays off beyond that first order, too. Since promotions tend to pop up around major holidays and seasonal changes, you get first dibs. Around Black Friday and Cyber Monday, for example, Costa has offered savings like 30% off eyeglasses and 50% off prescription lenses.

Students get 15% off through verification on UNiDAYS. Sign up or log in to your free UNiDAYS account, verify your student status, and apply the code at checkout.

A few things to know before you buy. The code works on full-price items only, with orders starting at $50 and capped at $300. It skips new launches, limited editions, and markdown promos, and it cannot stack on top of another code.

So if a frame is already marked down and that price beats 15% off, get the sale price instead and save your student code for a full-price pair. If the code ever stops working, re-verify through UNiDAYS to regenerate a new one.

Military, veterans, first responders, nurses, medical providers, teachers, and government employees get 15% off through ID.me. Costa applies the discount to its top-performing gear.

Click the ID.me button at checkout or on the ID.me discount page, and verify once. After that, the special discount comes off full-price items. Plus, the code stays ready for every order you place down the road, which makes it one of the better ongoing deals for qualifying shoppers.

One thing to remember is that the verified coupon code cannot stack with a separate coupon code. When that happens, compare the two and go with whichever drops your total the most.

Shipping is free on orders of $50 or more. That includes Puerto Rico and the U.S. Virgin Islands. Orders under $50 pay a flat $4.99 fee, and expedited shipping runs $18. Standard delivery takes up to seven business days.

A cart sitting just under the line, say around $40, is a good spot to add one more item you already planned to buy and clear $50. That way the $4.99 fee drops off, instead of paying it now and again on a second small order later.

There is another way to dodge the fee on smaller orders. Pick up in-store is free and usually ready in about two business days at your nearest Costa store. Choose it at checkout, then enter your ZIP or city to find the nearest store. For an order under $50, this is the better route when you want to skip the shipping charge and get your pair faster than the seven-day standard option.

You and your friend both get an extra 10% off through Costa's referral program. Send a friend 10% off their order, and 10% comes back to you once their purchase goes through. To join, you need a free Costa account, and your friend has to be a new customer placing a first order.

The smartest time to send a referral is when someone you know is already in the market for a pair. Their order earns them a discount and sends one your way, so both of you save on something you were buying anyway.

You can also share your link with a few friends who wear or want sunglasses, since each new order that comes through sends another reward back to you.