Mattress Online discount codes

Redeem a discount code for an extra discount on your mattresses during September 2026

  • last updated:
  • www.mattressonline.co.uk
Free shipping deal

Get FREE next day delivery on eligible MattressOnline orders

Info
  1. Available on most eligible products.
  2. Order before 4 pm Monday to Thursday for next working day delivery.
  3. Order before 2 pm on Saturday for Sunday or Monday delivery.
  4. Some products and delivery locations may have different availability or lead times.
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60% discount

Choose memory foam mattresses with up to 60% off from MattressOnline

Info
  1. Applies to selected memory foam mattresses only.
  2. Discount is applied automatically, with no discount code required.
  3. Discount amount varies by product and size.
  4. Available while stocks last.
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Free shipping deal

Order eligible MattressOnline products with FREE next day delivery

Info
  1. Available on eligible products and delivery areas.
  2. Order before 4 pm Monday to Thursday for next working day delivery, or before 2 pm on Saturday for Sunday and Monday delivery.
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55% discount

Shop selected MattressOnline products with up to 55% off

Info
  1. Valid on selected sale products only.
  2. Available while stocks last.
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Recently expired Mattress Online discount codes, sometimes they still work!

50% discount
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Cot bed mattress deal at Mattress Online: save 50%

Discount code
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Free shipping deal
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Get FREE delivery on eligible Mattress Online orders

Info
  1. Available on most products.
  2. Next-day delivery requires ordering before the stated cut-off time.
  3. Some products and postcodes have different delivery times or charges.
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Get this discount
60% discount
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Shop selected Mattress Online sale products with up to 60% off

Info
  1. Selected sale products only.
  2. Discount varies by product and size.
  3. Stock availability may change.
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40% discount
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Shop clearance to get up to 40% off at Mattress Online

Info
  1. End-of-line and discontinued items.
  2. Limited stock availability.
  3. All items are brand new with full guarantee or warranty.
  4. Free next day delivery options to most areas.
  5. No code required.
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45% discount
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Discover cooling buys at Mattress Online with up to 45% off

Info
  1. Discount applies to selected cooling sleep products.
  2. Savings versus RRP.
  3. Free next day delivery options to most areas.
  4. No code required.
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50% discount
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Enjoy up to 50% off on next day mattresses at Mattress Online

Info
  1. Discount applies to selected products.
  2. Savings versus RRP.
  3. Free next day delivery across most areas.
  4. Order by 4pm Monday to Thursday or 2pm Saturday for next-day eligibility.
  5. No code required.
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25% discount
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Grab Silentnight favourites with up to 25% off at Mattress Online

Info
  1. Discount applies to selected Silentnight products.
  2. Savings versus RRP.
  3. Free next day delivery options to most areas.
  4. No code required.
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50% discount
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Sealy favourites at Mattress Online allow you to get up to 50% discount

Info
  1. Applies to selected Sealy mattresses shown on the page.
  2. No code needed; discounts are already applied.
  3. Offer is stock-dependent and may change or end.
  4. Free delivery available on most items.
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Previous promotions at Mattress Online

If you're looking for a discount at Mattress Online, it's a good idea to keep an eye out during major sales events. The brand frequently offers promotions around periods like Black Friday, providing a great opportunity to save on your purchase. Throughout the year, you can find deals offering a significant price reduction, with the maximum discount previously reaching as high as 60% on selected items. These promotions often apply to specific ranges, such as rolled mattresses or the company's own brand products. While many offers are applied automatically, it's always worth checking for a Mattress Online discount code to see if you can get an even better price. Finding a valid discount code can help you secure your new mattress for less.

More ways to get a Mattress Online discount

Plan your free delivery

To get your items with free next day delivery, make sure you order by 4pm from Monday to Thursday. If you are ordering on a Sunday, the cut-off is 3pm. Planning your purchase around these times ensures you will not miss out on this convenient and money-saving delivery option.

Find discounts on specific mattress types

At Mattress Online, keep an eye out for promotions on specific categories like rolled mattresses or the company's own brand products. These sales often feature a significant discount, allowing you to save money on the exact type of mattress you need. You usually will not need a discount code.

Save on accessories

Your savings do not have to stop with the mattress. You can often find deals on accessories, such as the 50% discount on selected Silky Silks pillowcases. It is a great way to add extra comfort to your bed while taking advantage of another opportunity to get a good price.

Make the most of your trial period

The free 60-night comfort trial gives you confidence in your purchase. Remember that you need to try the mattress for a minimum of thirty nights before you can arrange an exchange. This ensures you have enough time to properly adjust to your new mattress before making a final decision.

About Mattress Online

About Mattress Online

Mattress Online started its journey back in 2003. Founded in Rotherham, the company has grown to become the UK's leading independent online mattress retailer. At mattressonline.co.uk, you can find a wide range of mattresses, beds, and bedding from top brands. As an NBF Approved Retail Champion, you can trust their products are safe and honestly described. The company is also committed to sustainability by offering a mattress recycling service. This ensures that one hundred percent of old mattress components are recycled. You can connect with them on social media for sleep tips and updates. Their focus on customer service has earned them numerous awards.

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Services and benefits at Mattress Online

Get free next day delivery

Many items at Mattress Online come with free next day delivery, helping you get your new bed or mattress quickly. To qualify, place your order by 4pm from Monday to Thursday or by 3pm on Sunday. Always check the product page for specific availability and cut-off times.

Try your mattress at home

Take advantage of the free 60-night comfort trial on all mattresses to ensure you have made the right choice. You need to sleep on it for a minimum of thirty nights before you can arrange an exchange. The mattress must be clean and undamaged to be eligible.

Choose your delivery options

If you need more flexibility, you can arrange for a weekend delivery for a fee of £17.50. For extra convenience, you can also have your order brought to a room of your choice for £20. These options provide more control over how and when you receive your items.

Find sale savings

You can often find a good discount in the sale section, with prices reduced on many items. This discount is applied directly, so you can see the final price while you browse. This makes it simple to find a great deal on your purchase without needing any extra steps.

Your guide to Mattress Online discounts

Save up to 60% on selected items by browsing the dedicated sale section on the Mattress Online website.

Get free next-day delivery on most products when you place your order before the daily cut-off time.

Try your new mattress at home with the free 60-night comfort trial to ensure it is the perfect fit.

Arrange for your old mattress to be collected and recycled, ensuring all components are responsibly handled.

Choose a weekend delivery slot for a fee of £17.50 if that is more convenient for your schedule.

Find special promotions on specific product categories, such as rolled mattresses or own-brand items.

Enjoy the convenience of having your order brought to a room of your choice for a small additional fee.

Receive discounts on bedding accessories like pillowcases when you shop for your new mattress.

Shop with confidence knowing that Mattress Online is an NBF Approved Retail Champion for quality products.

Secure your purchase for less by applying one of our tested and verified discount codes at the checkout.

News

Mattress Online explains sleep paralysis

Mattress Online has published a new blog post about sleep paralysis, a sleep issue that can feel unsettling if it happens to you. The article explains what sleep paralysis is, why it can occur, and what it may feel like when you wake up unable to move or speak. It also covers when it could be worth speaking to a healthcare professional. If you want to understand your sleep better, take a look at the latest advice and explore the site’s promotions too.

Mattress Online adds new sleep and performance expertise

Mattress Online has added Sleep and Performance Coach Chester Maglo to its expert panel, bringing together sleep science and physical recovery in one place. The move gives you more practical advice when you are choosing a mattress or looking to improve your sleep routine. It also means the brand can share more guidance on how rest supports everyday wellbeing. If you are browsing for a new bed, it is worth checking the latest promotions and advice online.

Create a calmer bedroom with simple plant ideas

If you want your bedroom to feel more peaceful, Mattress Online now shares a guide on choosing houseplants for sleep-friendly spaces. The advice covers plants that may help with air quality, allergy comfort, and a fresher-looking room. It is a simple way to make your bedtime area feel more inviting without a big change. Take a look at the expert tips and see which plant could work for your home.