thermoflask.com
20 offers to explore · Updated
SAVE ON YOUR NEXT ORDER
Common Thermoflask codes from the offers we've collected, shared for reference only. A code isn't guaranteed to work, so check the offer's terms at checkout.
Shop at thermoflask.com →Save 10% on your first purchase at Thermoflask.
Expires Nov 27, 2026.
Save up to 50% on Replacement Parts, Water Bottles, and more at Thermoflask.
At Thermoflask, save 15% on Water Bottles and Accessories, plus more categories to explore.
Save 20% on all purchases at Thermoflask, plus explore even more items.
Save up to 15% on Water Bottles, Kids Bottles, and more at Thermoflask.
At Thermoflask, save 15% on Replacement Parts and Accessories, plus more categories to explore.
All orders qualify for free express shipping, automatically applied at checkout.
Expires Nov 16, 2026.
Save 15% on all purchases at Thermoflask, plus check out even more deals.
Save 15% now at Thermoflask.
Save up to 10% on Kids Bottles, Water Bottles, and more at Thermoflask.
Get your Water Bottles and more delivered for free from Thermoflask.
Save 10% on your first order. Find top Kids Bottles selections and Replacement Parts essentials, with other curated items.
Save 20% on your order at Thermoflask.
Save 20% at Thermoflask today.
No offers match this filter.
Past promotions for reference. These offers may no longer be redeemable.
INSPIRELIFE15MISSCAROLINABARBOSASLING20DLAFFGX-67M694X53WCheckout screenshots supplied by the collected source. Historical results do not guarantee current availability.
| Code | Discount | Offer | Expires |
|---|---|---|---|
| welcome10 | 10% OFF | Save 10% Sitewide | Nov 27, 2026 |
| SLING | 50% OFF | Save 50% Sitewide | See merchant |
| KUFAMBA_THETRAVELINGTRIBE | 15% OFF | Save 15% on All Orders | See merchant |
| bf25 | 20% OFF | Save 20% on All Orders | See merchant |
| FREESPIRITHALEY | 15% OFF | Save 15% Sitewide | See merchant |
Thermoflask makes insulated drinkware for people who spend time outdoors as well as for everyday use at home, at work or on the way to school. The bottles and accessories are built from BPA-free stainless steel with double-wall vacuum insulation, which holds cold drinks for up to 24 hours and hot drinks for up to 12 hours. Lids are made to stay leakproof and many models include a strap for carrying, so the bottles work for hiking, camping and commuting. A kids' range offers smaller, durable bottles for school and family outings.
The brand sells through its own website and its bottles are also widely stocked by large US retailers such as Costco and Target. Shoppers buying on the site can pay with PayPal. Orders over $49 ship free within the contiguous United States, and that offer excludes Hawaii, Alaska, US territories, APO addresses and Canada.
Returns are accepted within 30 days for unused bottles or accessories that are in resalable condition with their original packaging, and the customer covers the cost of sending them back. Refunds go back as credit, with processing taking 3-7 business days, though the credit can take 1-2 billing cycles to appear. Teachers and first responders can each take 10% off bottles and bundles once their status is verified through GovX, and signing up for the newsletter brings a 10% off along with news and deals.
Confirm current details directly with the merchant.
Codes go into the discount code box at the Thermoflask checkout; deals need no code.
Pick a code from the list above. Its details give the discount and any conditions, such as a minimum spend or an end date.
Select Show Code. A window opens with the full code, a Copy code button and a link to thermoflask.com.
Add your items at thermoflask.com, then paste the code into the discount code box in your cart or at checkout.
Make sure the discount shows in the order total before you pay. If it does not, the order may not meet one of the code's conditions.
Yes, Thermoflask gives first responders a 10% off on bottles and bottle bundles, and eligibility is confirmed through GovX.
Yes, teachers can get 10% off insulated bottles and bundles through GOVX. Teacher status has to be verified with GOVX before the discount applies.
Yes, Thermoflask gives a 10% off for signing up for its newsletter, which also brings exclusive news and deals.
Yes, orders over $49 ship free within the contiguous United States. Hawaii, Alaska, US Territories, APO addresses and Canada are not covered by that free shipping.
The best discount at Thermoflask is 50% off on select items. Other discounts include 20% off on all purchases, free shipping on orders over $39, and 50% off on a bottle and sling.
On this page, 2 offers are for new customers only. A code also fails when the cart has excluded items or the promotion has ended.
SLING gives the biggest discount on this page, 50% off.
3 of the 20 offers are sitewide, including welcome10. The others cover selected products or orders, as their details say.
About 5 a month. Over the past year 59 codes were collected, with the most, 37, in Feb 2026.
30 days.
Unused bottles or accessories in resalable condition with original packaging.
3-7 business days for processing1-2 billing cycles for credit to appear.
Refund.
Customer is responsible for return shipping costs.
Credit.
Thermoflask accepts PayPal.
Thermoflask has official accounts on Facebook, Instagram, Pinterest and TikTok.
Over the past year, 59 Thermoflask codes were collected, about 5 a month. The busiest month was Feb 2026, with 37 codes. The most popular discount was 30% off, offered in Dec 2025.
Browse more stores in Thermoflask’s categories.