Best cheap mattress sales and deals for September 2021

Hoping to find a new mattress on sale? Here's some of the cheapest and best mattress deals going on this month

best cheap mattress deals 2021
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If you're hoping to find a deal on a new mattress this month, look no further than the page you've just landed on. Each month shoppers can find new mattress deals and discounts from top manufacturers and retailers across the net, like Mattress Firm offering discounts as well as some of the best bed-in-a-box brands taking upwards of 30% off their products.

While this guide is dedicated to finding you the best mattress deals today, even shopping for a cheap mattress on sale takes quite a bit of forethought. Do you experience back pain in the morning? Maybe you run hot at night and need a mattress that offers a cooler night's sleep. If you're entirely sure of what you're looking for, our guide to the best mattress may give you some insight.

You can also check out the convenient guides below to help you find a proper mattress, including mattresses to help alleviate backpain, mattresses for side sleepers, proper pillows and more.

Labor Day mattress sales are going live! You can find some of the best Labor Day mattress sales and deals this year below, or you can head to our hub of the best Labor Day sales to find even more great savings and offers.

So check out all of the best cheap mattress deals and sales this month below to find your new mattress on sale cheap. You'll find all the details needed to make a wise purchase, along with possible savings and other notable mattress deals and discounts happening. 

Best mattress sales today


Back to School Sale
Use the coupon code provided by Allswell at checkout to receive 10% off all bedding, bath and spa products, and more sitewide. While not their best mattress sale, it offers a flat 10% discount across the board that can take upwards of $500 off your purchase.View Deal


30% off all mattress plus free delivery
Save upwards of $500 on a new mattress from Amerisleep with 30% off all purchases for a limited time. Amerisleep will also ship free of charge and features no contact delivery / exchanges.
View Deal


Avocado Summer Sale
Avocado actually has a few sales happening right now with a mix of price drops and coupon codes to check out. Save $100 on the Green and Vegan hybrid mattress or Latex mattress or save $250 on the new Organic Luxury Plus mattress with special on-site coupon codes.View Deal


$400 off all mattresses + up to $499 of free sleep accessories
Awara is taking $400 off all mattresses plus sending up to $499 in sleep accessories with every mattress purchase. No promo codes needed, just shop and automatically receive the discount at checkout.View Deal


25% off all mattresses + free $250 gift set
BEAR mattresses are excellent choices for sleepers with active lifestyles, offering exceptional comfort and recovery for the restless. As part of their extended Memorial Day sale, save 25% sitewide plus receive a $250 gift set (two pillows and a mattress topper) completely free when you use promo code SUMMER at checkout.
View Deal

Casper Mattress

15% off mattresses, 10% off everything else
Casper is offering 15% off all mattresses plus 10% of all other items. You can also save upwards of 50% off on select Final Sale items. No promo codes needed.View Deal


$200 off any mattress + $399 in free sleep accessories
DreamCloud makes two luxurious mattresses: the DreamCloud Luxury Hybrid and the pricier, fancier DreamCloud Premier. This month, shoppers can save $200 plus get $399 in accessories absolutely free.View Deal

Eight Sleep Pods

$100 off the Pod
A premium mattress with a premium price tag, Eight Sleep Pod mattress is an incredible product that is worth every penny. That said, its price tag can shun many but right now shoppers can save $100 off the Pod mattress.View Deal

Leesa Mattress

15% off mattresses and bundles
Leesa mattresses are great for any budget, offering a mix of budget-friendly memory foam and pocket spring mattresses. This month, shoppers can save up to $500 on mattress plus 15% off select sleep bundles.View Deal

Nectar Mattress

$399 of sleep accessories with every mattress
Nectar makes just one mattress, but it's a good one for so many reasons (head to our Nectar mattress review for more details). This month, shoppers can receive $400 worth of sleep accessories with their purchase during their extended Memorial Day sale.View Deal

Purple Mattress

Receive over $200 in bedding and pillows FREE
The Purple mattress is "instantly soft where you want it, firm where you need it and comfortably cool all night". Purple is offering free sheets and pillows with any purchase right now.View Deal

Saatva Mattress

$200 off any purchases of $1,000 or more
Saatva offers a range of excellent inner-spring and memory foam mattresses with pricing on par with comparable bed-in-a-box brands.  Shoppers save $200 off any purchase of $1,000 or more during Saatva's sale..View Deal


$150 off any mattress + up to $540 in free gifts
A mattress designed for athletic recovery and support, the Zoma mattress features targeted zones that help promote muscle recovery and relaxation. Extending their Memorial Day sale, shoppers can get $150 off any mattress plus up to $540 in free gifts.View Deal

Want to browse yourself? Here are all the mattress sales going on right now...