Affordable king size mattresses

Find affordable king size mattresses to create a comfortable sleep space without stretching your budget. Explore options at different price points and compare styles to find the right mattress for your bedroom and sleep needs.

Sleepy's Basic Innerspring Firm Mattress

8758

Starting at

$249⁹⁹

Firm Comfort, best for

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

Sleepy's Rest Firm 2.0 Innerspring Mattress

7039

Starting at

$449⁹⁹

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

Sealy Essentials Sudley 8.5" Firm Mattress

989

Starting at

$499⁷⁷

$999⁹⁹

$500 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Temperature
Bed Partner
Toss and Turn

Tulo Bamboo 6" Firm Green Tea Memory Foam Mattress

5604

Starting at

$259⁹⁹

$729⁹⁹

$470 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

Sealy Essentials Spruce 5.5" Firm Mattress

1373

Starting at

$549⁹⁹

$949⁹⁹

$400 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Temperature
Bed Partner
Toss and Turn

Sleepy's By Sealy Spring Luna Euro Top Mattress

4672

Starting at

$599⁹⁹

Medium Comfort, best for

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

Queen mattress & base now $499 with code ELEVATE

Beautyrest BR800 Greenwood 10.5" Firm Mattress

3413

Starting at

$569⁹⁹

$1299⁹⁹

$730 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Bed Partner
Toss and Turn
Temperature
Pain

Sierra Sleep By Ashley Chime 10" Hybrid Mattress

927

Starting at

$439⁹⁹

$1099⁹⁹

$660 OFF

Medium Comfort, best for

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

Beautyrest BR800 Greenwood 11.5" Medium Firm Mattress

3243

Starting at

$589⁹⁹

$1299⁹⁹

$710 OFF

Medium Comfort, best for

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

Sealy Frisco 2.0 Firm Mattress

557

Starting at

$269⁷⁷

$539⁹⁹

$270 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Bed Partner
Temperature

Sierra Sleep By Ashley Chime 12" Memory Foam Mattress

468

Starting at

$574⁹⁹

$1574⁹⁹

$1000 OFF

Plush Comfort, best for

Side Sleepers
Pain
Bed Partner
Toss and Turn

Sealy Tanglewood Medium Mattress

Starting at

$264⁷⁷

$529⁹⁹

$265 OFF

Medium Comfort, best for

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

Sealy Frisco Firm Mattress

Starting at

$269⁷⁷

$539⁹⁹

$270 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Bed Partner
Temperature

Sierra Sleep By Ashley Chime 8" Memory Foam Mattress

142

Starting at

$449⁹⁹

$1249⁹⁹

$800 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Bed Partner
Toss and Turn

Sealy Frisco 1.1 Firm Mattress

Starting at

$539⁹⁹

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Bed Partner
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Sealy Tanglewood 2.0 Medium Mattress

Starting at

$264⁷⁷

$529⁹⁹

$265 OFF

Medium Comfort, best for

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

Affordable king size mattresses can make a spacious sleep setup more attainable without requiring a premium-level budget. A king mattress gives two sleepers room to spread out, shift positions and maintain personal space, which can be especially helpful for couples with different sleep habits or anyone who shares the bed with children or pets. It can also be a practical choice for a larger primary bedroom, a guest suite or a home where comfort and generous proportions matter. Budget-friendly king mattresses may be available at starting prices around $170 to $300, particularly among mattress-in-a-box options, although prices, promotions and availability can change. These lower-cost choices may work well for a guest room, a temporary living arrangement, a first home or a shopper who needs dependable comfort while keeping initial expenses in check. They may also suit someone furnishing a vacation home or preparing a welcoming space for visiting family during the cooler months. For everyday use, it helps to look beyond the first price you see and consider the materials, construction and expected lifespan. A mattress made with foam may provide pressure-relieving cushioning and help limit motion transfer when one person turns over. An innerspring mattress can offer a familiar responsive feel, airflow through the coil system and sturdy support for sleepers who do not want to feel deeply hugged by the bed. A hybrid design combines coils with foam or another comfort material, creating a balance of lift, contouring and breathability. No single construction is best for everyone. Side sleepers often appreciate cushioning around the shoulders and hips, while back and stomach sleepers may prefer a more supportive surface that helps keep the body level. Sleepers with different preferences can look for a middle-of-the-road feel, such as medium or medium-firm, or choose a design that combines a supportive core with a softer comfort layer. Taking a few minutes to think about your sleeping position, preferred feel and sensitivity to movement can make an affordable purchase feel much more personal.

Room size and bed support deserve equal attention when choosing an affordable king size mattress. A standard king mattress is wider than a queen, so measure the room and leave enough space for walking around the bed, opening drawers and placing nightstands. Check the mattress dimensions as well as the frame dimensions, since a close fit helps prevent shifting and keeps the sleep surface supported from edge to edge. The foundation or platform should be compatible with the mattress, and slat spacing should follow the mattress manufacturer's requirements. If a mattress arrives compressed in a box, give it time to expand according to the included instructions and allow the room to air out before adding sheets. A mattress protector can help guard against spills, perspiration and everyday wear, while breathable sheets and a suitable comforter can make the sleep environment feel inviting as the weather changes. For shoppers comparing very low-priced options, comfort is only one part of the value equation. Look at the thickness and density of the comfort layers, the type of support system, the edge construction and the terms for delivery, returns, trial periods and warranty coverage. An ultra-affordable mattress can be a sensible solution for occasional use, but a daily mattress may be worth a larger investment when stronger materials and lasting support are priorities. Some shoppers find that spending roughly $500 to $1,000 opens the door to more substantial construction, though the right value depends on body weight, sleep style, household needs and how long you expect to use the mattress. A guest-room mattress might be chosen for easy care and broad appeal, while a mattress for nightly use may deserve closer attention to pressure relief, temperature regulation and motion isolation. If a plusher surface is part of your comfort plan, explore Affordable King Size Pillow Top Mattresses for additional cushioning. Whether you are furnishing a new bedroom, replacing an older sleep surface or helping someone create a more comfortable home, an affordable king size mattress can bring generous space and restorative support together. Consider the full sleep setup, choose materials that fit your habits and review the purchase terms carefully so finding better zzz's feels simple from delivery through bedtime. We make sleep easy™.

What mattress materials are available in affordable king mattresses? + -

Affordable king mattresses may feature memory foam, innerspring coils, hybrid designs or a combination of materials. Each construction offers a different feel, from contouring foam to responsive coils.

How do I choose the right comfort level for an affordable king mattress? + -

Consider whether you prefer a plush, medium or firm feel. Your preferred sleep position and whether you like a more cushioned or supportive surface can help guide your choice.

Are affordable king mattresses available for different sleep positions? + -

Yes. Options are available for side, back and stomach sleepers, as well as people who change positions during the night. Look for a comfort level and construction that match your preferred way to sleep.

What type of foundation works with an affordable king mattress? + -

Many affordable king mattresses are compatible with a platform bed, adjustable base or traditional foundation. Check the mattress specifications to confirm which support surface is recommended.

How can I care for an affordable king mattress? + -

Use a properly supportive foundation, add a mattress protector and follow the care instructions from the manufacturer. Regularly washing the protector and keeping the mattress free of spills can help maintain its condition.