Affordable king size mattresses

Finding the right balance between space and value is easy with affordable king size mattresses. Designed to give you plenty of room to stretch out without stretching your budget, these options make it simple to upgrade your sleep experience. Discover a range of comfortable choices that help you get quality rest while keeping costs in check. Explore affordable king size mattresses and enjoy more room to relax every night.

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Sleepy's Basic Memory Foam Firm Mattress

3156

Starting at

$299⁷⁷

$999⁹⁹

$700 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Pain, Bed Partner, Temperature, Toss and Turn
Support

Sleepy's Basic Innerspring Firm Mattress

8638

Starting at

$219⁹⁹

Firm Comfort, best for

Back, Stomach Sleepers
Temperature, Pain, Bed Partner, Allergies, Toss and Turn

Tulo Bamboo 8" Medium Green Tea Memory Foam Mattress

5526

Starting at

$292⁹⁹

$809⁹⁹

$517 OFF

Medium Comfort, best for

Back, Side, Stomach Sleepers
Pain, Bed Partner, Temperature, Toss and Turn

Tulo Copper Memory Foam 6" Firm Mattress

Starting at

$259⁹⁹

$899⁹⁹

$640 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Pain, Temperature

Finding affordable king size mattresses has never been easier for shoppers who want the spacious comfort of a larger bed without exceeding their budget. A king size mattress offers generous sleeping space—perfect for couples, families with kids, or anyone who loves to stretch out. Mattress Firm provides a selection of affordable king size mattresses in a range of comfortable styles and materials, so you can find quality options that fit your sleep needs and lifestyle. Whether you prefer memory foam, innerspring or hybrid designs, you can shop confidently knowing there’s a mattress that combines both value and comfort.

Choosing an affordable king size mattress doesn’t mean sacrificing features or durability. The latest budget-friendly models often include enhanced support systems, cooling technologies and pressure-relieving layers to ensure restful nights. Shopping at Mattress Firm makes it easy to compare top brands and discover great prices on king size mattresses all year long. Our Sleep Experts® are ready to help you identify the best affordable option—including firm, plush or medium-feel mattresses—so you can enjoy luxurious sleep at an exceptional price. Explore our collection online or in-store to experience how simple it is to get premium sleep solutions within your budget.

What features should I look for in an affordable king size mattress? + -

When shopping for an affordable king size mattress, consider features like supportive materials, comfort layers, motion isolation and breathability. Look for mattresses that balance quality and value to ensure a restful night's sleep without compromising on comfort.

How can I make my affordable king size mattress last longer? + -

To extend the life of your king size mattress, rotate it regularly, use a mattress protector and keep it clean. Proper support from a sturdy bed frame also helps maintain its shape and performance over time.

Are there different types of affordable king size mattresses available? + -

Yes, you can find affordable king size mattresses in various types such as memory foam, innerspring, hybrid and gel-infused options. Each type offers unique benefits to suit different sleep preferences.

Can an affordable king size mattress provide good support for couples? + -

Many affordable king size mattresses are designed with features like reinforced edges and motion isolation to offer comfortable support for couples. These features help minimize disturbances and maximize sleeping space.

How do I choose the right firmness level in an affordable king size mattress? + -

Selecting the right firmness depends on your sleep position and personal preference. Side sleepers often prefer softer mattresses for pressure relief, while back or stomach sleepers may benefit from medium or firm options for added support.