Diono US Promo Codes and Coupons September 2025

Diono US logo

Diono US

Diono.com is a premium car seat and stroller manufacturer known for their high-quality, safety-focused children's travel products. Founded in 1999, they specialize in convertible car seats, booster seats, and travel accessories designed to grow with children from birth through their childhood years.

diono.com

Today's Diono US discount codes

TOP PICK
Diono US logo

50% off

4 uses
high

worked 4 months ago

Take 50% off with promo code
Diono US logo

15% off

146 uses
high

worked 21 days ago

15% Off Storewide (minimum Order $200) at Diono US
Diono US logo

15% off

462 uses
high

worked 28 days ago

15% Off Storewide at Diono US
Diono US logo

10% off

315 uses
high

worked about 2 months ago

10% Off Storewide (minimum Order $50) at Diono US

Featured Diono US Products

LiteClik®30 XT / RXT SafePlus® Infant Car Seat Base

LiteClik®30 XT / RXT SafePlus® Infant Car Seat Base

Sold separately from our LiteClik®30 XT SafePlus® Infant Car Seat and LiteClik®30 RXT SafePlus® Infant Car Seat, this base includes a steel core and anti-rebound bar to offer the best protection for your infant.   Features: SafePlus® Engineering – Our steel anti-rebound bar reduces rebound rotation, and the use of a top tether provides stability similar to that of a load leg for an ultra-safe install for your little one. Quick and simple installation with confidence – Two bubble levels and a two-position leveling foot system help you achieve the best angle in your vehicle. Premium LATCH connectors and EasyPath® belt lock off – Help to ensure your infant car seat installation is secure. Additionally, you can buckle the seat in if you are ever base-less or using the infant car seat in rideshare vehicles.

USD 125.99

Radian® Side Impact Management Pod for 3R®SafePlus®, 3RXT®SafePlus®, 3QX SafePlus®, 3QXTSafePlus®, 3QXT® FirstClass™ SafePlus®, 3QXT®

Radian® Side Impact Management Pod for 3R®SafePlus®, 3RXT®SafePlus®, 3QX SafePlus®, 3QXTSafePlus®, 3QXT® FirstClass™ SafePlus®, 3QXT®

Replacement Side Impact Management (SIM) Pod. Compatible with all Radian SafePlus® models.

USD 39.99

Monterey® 6XT SafePlus® High-Back Booster

Monterey® 6XT SafePlus® High-Back Booster

We’ve taken our award-winning design, compact and convenient for travel, and made it easier to install with flexible latch connectors. Unbox, unfold, install, adjust and go in 2 minutes or less. With enhanced comfort we’ve updated this high back booster to continue to grow with your big kid, all without compromising on safety or design.    Features: 8 Years One Booster® - For your big kid from 40 - 120 lb. It's all you will ever need. One-hand easy-adjust - SafePlus® 12-position headrest and backrest that grows up with your child. Engineered for safety and comfort with 8 layers of Side Impact Protection. Built for comfort for every size - Our seat has improved comfort and premium layered padding on the seat base and back rest for an extra-cushioned ride. One removable cup holder - Keeps your big kid's drink close at hand. SafePlus® belt guides - Easy access to seatbelt buckle help your big kid with self-buckling - don't forget to check though! Unbox, unfold, install, adjust and go - All in 2 minutes or less. Thanks to the SafePlus® flexible LATCH connection, installation is a breeze. The flexible latches allow for universal compatibility with vehicles. Engineered with side impact protection - Our rigid shell is reinforced with 8 layers of high-impact aluminum and EPS energy absorbing foam, to protect the head, shoulders, and torso. Folds to the size of a carry-on bag - Simple storage options for on-the-go travel or small spaces.

USD 189.99

Monterey® 2XT

Monterey® 2XT

The original 2-in-1 booster seat with one of a kind, easy-adjust, separate height and width expansion. Transforms from a high-back booster to a backless booster as your big kid grows. This seat has been awarded Best Bet Booster by IIHS. Features: 8 Years One Booster - for your big kid from 40 - 120 lb. It's all you will ever need. Easy-adjust - 11-position headrest that grows up with your child. Engineered for safety and comfort with 2 layers of Side Impact Protection. One of a kind - easy-adjust expandable backrest allows up to 6.5 in to grow with your big kid. With 2 layers of Side Impact Protection and deep padded cushioning. Two built-in retractable 2-in-1 cup holder and snack tray - keeps your big kid's drink close at hand and stows away their essentials. Our contoured premium soft fabrics - with layered foam padding that provide comfort and support can be easily removed for machine washing. SafePlus® belt guides - easy access to seatbelt buckle help your big kid with self buckling - don't forget to check though! Easy, quick and secure installation - engineered with automotive steel LATCH connectors and 2 easy adjust LATCH straps allow you to quickly tighten and secure your booster to your vehicle. Engineered with side impact protection - our rigid shell is reinforced with 2 layers of high-impact aluminum and EPS energy absorbing foam,to protect the head, shoulders, and torso.

USD 159.99

What Diono US coupons are available today?

We track so many discount codes. Read about today's Diono US coupon statistics.

18
Diono US deals available today
6
Active Diono US codes
50% off
Biggest discount available
Get the best Diono US promo codes and coupons that actually work. Our community of sustainability minded shoppers helps you save by testing and sharing:
  • Verified promo codes with live success rates from recent shoppers!
  • Exclusive single-use codes shared by our community (18 active codes).
  • Drop alerts when Diono US's most popular items go on sale!
  • Deals for those who want extra savings opportunities
  • Insider savings tips from experienced Diono US shoppers who know the best deals.

Why TerraCoupons finds better Diono US discounts:

  • Live success tracking: See exactly which codes are working for other shoppers right now
  • Real-time feedback: Every code attempt is tracked and ranked to show you the best options first
  • Sale predictions: Get alerted when Diono US's next big discount event is coming
  • Exclusive savings: reseller discounts, shopping tips and sustainability tips you won't find elsewhere
Note: Our community tests every Diono US promo code and shares results in real-time. Check success rates and shopping tips in the activity feed to find what works best for your purchase.
Diono US logo

20% off

274 uses
high

worked 11 days ago

20% Off Storewide (Minimum Order: $150) at Diono US
Diono US logo

15% off

69 uses
high

worked 26 days ago

15% Off Storewide (minimum Order $100) at Diono US
Diono US logo

25% off

2 uses
medium

worked 5 months ago

Save 25% off with coupon code
Diono US logo

25% off

6 uses
medium

worked 7 months ago

Get 25% off with discount code

More Diono US Products

Cuddle Soft® 2-in-1 Head Support

Cuddle Soft® 2-in-1 Head Support

The Diono Cuddle Soft®, 2-in-1 head support, is a comforting body support for babies. The nested design supports their delicate head, shoulders and torso in cushioned comfort. Features: FULL BODY SUPPORT - The nested design supports their delicate head, shoulders and torso in cushioned comfort GROWS WITH BABY - Clever 2-in-1 design has a removable inner cushion to adjust the head support as baby grows up to 15 lb INFANT CARRIER, CAR SEAT & STROLLER COMPATIBLE - For cushioned comfort and support on the go, however you choose to travel ULTRA-SOFT FABRIC - Made from ultra-soft velvet-touch fabric, it is comforting and soft next to baby's sensitive skin DESIGNED FOR LIFE - Accidents happen, that's why Cuddle Soft® can be easily machine washed for added parent convenience

USD 13.99

Monterey® 4DXT 2-in-1 High-Back Booster Main Cover Model Year 2019 to Present

Monterey® 4DXT 2-in-1 High-Back Booster Main Cover Model Year 2019 to Present

Replacement cover for the Monterey® 4DXT 2-in-1 High-Back Booster (Model Year 2019 to Present).

USD 109.99

Radian® 3R® Car Seat

Radian® 3R® Car Seat

The original 3 Across All-In-One™ convertible car seat - now available in new, two-toned colorways with additional features. Up to 10 years of safe use and great value This seat has been awarded Best Bet Booster by IIHS. Features: 10 Years One Car Seat® - from Birth to Booster (5 - 120 lb) it's all you will need. Grows with your child, ultimate protection on every road trip. 4 modes in 1 seat! Rear Facing for Longer - lovingly engineered to keep your child rear-facing up to 50 lb. Fits 3-Across - our famous slim-fit design with zero compromises to safety, space, or comfort. Mechanically engineered from reinforced automotive grade high-strength steel, our unique core shell shields and protects your child. High-quality ComfortPlus Memory Foam, always included. The original and only all-in-one convertible car seat that folds for travel or compact storage. FAA approved for airline use. Exclusive Features - With limited colored seats, you will also receive a head support pillow, comfort cushion and 2 XL cup holders. These additions are included only with the following color seats - Black Storm, Blue Surge, Blue Razz Ice, Purple Wildberry and Pink Cotton Candy.

USD 199.99

Everett NXT

Everett NXT

Slim-fit, lightweight booster seat equipped with easy click rigid LATCH connectors for safe and secure installation every time. This seat has been awarded Best Bet Booster by IIHS. Features: 8 Years One Booster - for your big kid from 40 - 120 lb. It's all you will ever need. Easy-adjust - 7-position headrest that grows up with your child. Engineered for safety and comfort with 2 layers of Side Impact Protection. Built for comfort for every size - our backrest has deep padded cushioning. Two detachable 2-in-1 cup holder and snack tray - keeps your big kid's drink close at hand and stows away their essentials. Our contoured premium soft fabrics - with layered foam padding that provide comfort and support can be easily removed for machine washing. Open loop belt guides - easy access to seatbelt buckle help your big kid with self buckling - don't forget to check though! Easy, quick and secure installation - engineered with automotive steel rigid LATCH connectors allow you to secure the booster to your vehicle.

USD 129.99

Diono US logo

15% off

47 uses
low

worked 8 months ago

15% Off Storewide at Diono US
Diono US logo

15% off

48 uses
low

worked 8 months ago

15% Off Select Items at Diono US
Diono US logo

15% off

19 uses
low

worked 10 months ago

15% Off Storewide at Diono US
Diono US logo

1% off

21 uses
low

worked 10 months ago

1% Off Storewide (Minimum Order: $300) at Diono US

Sustainability Score

62%
While Diono demonstrates commitment to product safety and durability, their sustainability practices show room for improvement. They provide limited transparency about their manufacturing processes and supply chain. Though they use some recycled materials and have implemented packaging reduction initiatives, they lack comprehensive environmental policies and clear carbon reduction goals. Their labor practices documentation is minimal, and they could improve their reporting on factory conditions and worker welfare.

About Diono US

4.0 (2)

FAQs

Diono typically offers their largest discounts during Black Friday/Cyber Monday, Prime Day (if participating), and end-of-season clearance events, usually in January and July.

Yes, Diono offers a 20% military discount for active duty, veterans, and their families through ID.me verification.

Sign up for Diono's newsletter to receive exclusive offers, follow their social media for flash sales, and check their website during major shopping holidays. They also occasionally offer bundle deals when purchasing multiple items.

Yes, Diono offers price matching on identical products from authorized retailers within 30 days of purchase.

In the past month, Diono US has launched 0 new promo coupons for shopper discounts. This indicates that Diono US does not provide regular opportunities for customers to save money on their purchases.

On average, Diono US provides some discount coupons each month. Based on historical data, the average time between Diono US coupon releases every Infinity days. However, this rate depends on various factors such as seasonal promotions (Black Friday, Cyber Monday, etc.), product launches, or other marketing initiatives. To stay informed about upcoming discounts and promotions, we recommend checking Diono US website regularly, subscribing to email newsletters, and following them on social media.

Diono US is offering 6 working store-wide codes, however they are also offering 12 additional discount codes with a best discount of 50% off

terra.coupons is the #1 provider of discount codes for your favorite retailers, such as Diono US. As a crowd-sourced platform for coupon codes, we accurate codes for over 10,000 stores. Save time and avoid expired codes by checking terra.coupons for the latest Diono US discount codes.

Curated by

Aleksa P.

Aleksa P.

Deal Curator

Last updated September 2025

Aleksa is a deal finder from the tech-savvy city of Austin, Texas. A keen coder by day and a discount guru by night, Aleksa checks back regularly to update you with new deals.

Latest Diono US coupon activity

Track real-time Diono US coupon activity from our community. See which codes are working right now at Diono US, when they were last verified, and any usage restrictions. Our feed helps you quickly find active codes and avoid expired ones.

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