in 15 offers
The lowest price for Hydro Flask 21 oz Standard Flex Straw Cap right now is $43.59 at Snowcountry.eu, compared across 14 retailers.
The all-time low was $35.00 on 1 July 2026 — today's price is 25% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 4 Oct 2026.
Hydro Flask 21 oz Standard Flex Straw Cap
Last updated at 04/10/2026 06:50:04
Hydro Flask – Standard Flex Straw Cap 621 ml (21 oz) Bottle – Stainless Steel, Leakproof, Cupholder Compatible – Insulated Cold 24 Hrs – Harbor Blue
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Hydro Flask 21oz / 621ml Standard Mouth + Flex Straw Cap - Water bottle
Delivery $95.75
Hydro Flask Standard Mouth Harbour Blue Bottle with Flex Straw Cap 621mL
Delivery $9.95
Hydro Flask 21oz (621ml) Standard Mouth Bottle with Flex Straw Cap - Harbour Blue - One Size
Delivery between 12–14 Oct $46
Hydro Flask | 21 Oz Standard Flex Cap | Keel Surf & Supply Harbor Blue
Free delivery
Bottle Hydro Flask 621 ml Standard Flex Straw Cap Harbor Blue 621 ml
Delivery between Tue – Sat $77.90
Hydro Flask 21oz (621mL) Standard Mouth with Flex Straw Cap Stainless Steel Water Bottle Harbour Blue
Delivery between Thu – Fri $4
Hydration 21 oz Flex Straw Cap Harbor Blue
Delivery $9.95
Hydro Flask 21oz Flex Straw Cap | Insulated Water Bottle | That Eco Place Harbor
Delivery between 8–16 Oct $14.90
Hydroflask 21 Oz Standard Flex Straw Cap
Delivery $9.95
| Brand | Hydro Flask |
Hydro Flask – Standard Flex Straw Cap 621 ml (21 oz) Bottle – Stainless Steel, Leakproof, Cupholder Compatible – Insulated Cold 24 Hrs – Harbor Blue
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Hydro Flask 21oz / 621ml Standard Mouth + Flex Straw Cap - Water bottle
Delivery $95.75
Hydro Flask Standard Mouth Harbour Blue Bottle with Flex Straw Cap 621mL
Delivery $9.95
Hydro Flask 21oz (621ml) Standard Mouth Bottle with Flex Straw Cap - Harbour Blue - One Size
Delivery between 12–14 Oct $46
Hydro Flask | 21 Oz Standard Flex Cap | Keel Surf & Supply Harbor Blue
Free delivery
| Brand | Hydro Flask |
