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Best Mattress Deals 2026
Best mattress deals right now
Current right now deal table
| Deal pick | Best for | Current promo |
|---|---|---|
| Saatva Classic | Best long-term buy | Current official sale up to $625 off, no code shown on Saatva.com. |
| Puffy Cloud | Affordable comfort upgrade | current sale: save, Cloud starts around $449. |
| SweetNight Mattress | Cheapest sensible option | current sale: up to 40% off sitewide plus free pillows with mattress purchase. |
| Amerisleep AS2 / AS3 | Foam value pick | current sale: $600 off AS2, AS3 and AS. |
| PlushBeds Botanical Bliss | Organic latex pick | current sale: $1,500 off bedroom mattresses plus bedding/toppers discounts. |
Other useful options:
- Amerisleep AS2 / AS3: current sale: $600 off AS2, AS3 and AS.
- PlushBeds Botanical Bliss: current sale: $1,500 off bedroom mattresses plus bedding/toppers discounts.
Deal pages change fast during holiday week. We verified the offers above from official brand sale pages on June 30, 2026. If a brand changes its sale copy after that, use the live merchant page as the source of truth.
A king size mattress measures 76 inches wide by 80 inches long, the widest standard size you can buy without going into split or custom territory. That extra real estate comes at a cost, and king prices span a wide range: from around $800 for a budget foam option to $4,000 or more for a premium latex hybrid. The good news is that king-specific sales are common year-round, so cutting hundreds off the sticker price doesn't always require waiting for a holiday weekend.
This guide covers what king mattresses actually cost by type, which models are worth the money right now, how split king setups work with adjustable bases, and when to buy for the deepest discounts.
Sleep Lab Editor's Pick
Our Editor's Pick in king: the Saatva Classic. Available in king, California king and split king, with free white-glove delivery, 365-night trial, and a 1-year price-match guarantee.
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King Size Mattress Dimensions and Room Requirements
The standard king measures 76" × 80", sometimes called an Eastern king to distinguish it from a California king (72" × 84"). The Eastern king is wider and slightly shorter; the California king is narrower and longer. If you are tall, a Cal king adds 4 inches of length. If you share a bed and need horizontal space, the standard king wins.
For room fit, most interior designers recommend at least 12 feet by 12 feet for a king, leaving enough space to walk around the bed and open drawers. A 10 × 12 room can work if the layout is efficient, but anything smaller starts to feel cramped. Measure twice before you order, king mattresses are heavy and return shipping on a bad fit is a headache.
King foundations, bed frames, and box springs are built for the 76" × 80" footprint. Standard king sheets and bedding are widely available at every price point, which is one practical advantage over a California king.
King Mattress Prices by Type
Price varies more by construction than by brand. Here is a realistic breakdown of what you will pay for a king in 2026, before any sale codes:
- All-foam (memory foam or polyfoam): $800–$1,800. Typically the most affordable entry point. Good motion isolation; some heat retention depending on foam density.
- Innerspring: $700–$1,500. Bouncy, cool-sleeping, but thinner comfort layers. Best for stomach sleepers and those who dislike foam feel.
- Foam hybrid (foam layers + pocketed coils): $1,200–$3,000. The sweet spot for most buyers. Better airflow than all-foam, better contouring than innerspring.
- Latex hybrid: $1,800–$4,000. Natural latex sleeps cooler and is more durable than memory foam.
- Luxury / specialty: $3,000+. Proprietary materials and longer warranties justify the jump for some buyers.
Best King Mattresses on Sale Right Now
The table below reflects 2026 king pricing with active promotions applied.
| Model | Type | King Price (After Sale) | Best For |
|---|---|---|---|
| Saatva Classic | Innerspring hybrid | ~$2,395 (varies by firmness) | Back sleepers, those who want a hotel feel |
| DreamCloud Premier | Luxury hybrid | ~$1,599–$1,799 (frequent sales) | Value hunters, back & combo sleepers |
| Birch Natural | Latex hybrid | ~$1,999 (sale pricing) | Eco-conscious buyers, hot sleepers |
| Saatva Latex Hybrid | Organic latex hybrid | ~$2,295 (varies) | Natural materials, medium-firm feel |
For the best balance of luxury build and value in king, the Saatva Classic stands out: hand-built coil-on-coil construction, available in king, California king and split king, with free white-glove delivery and a 365-night home trial.
Where to Buy a King Size Mattress
You have three main channels: direct-to-consumer online brands, traditional retail stores, and third-party marketplaces. Each has real trade-offs.
Direct-to-consumer online: Saatva, Purple, and similar brands sell exclusively or primarily through their own sites. Prices are transparent, trial periods run 100–365 nights, and full-size returns are handled directly. The downside is you cannot try the mattress in a showroom before buying.
Mattress retail chains: Mattress Firm, Sleep Number, and regional stores let you lie on the mattress before buying. Prices are often negotiable in-store, and financing deals are common.
Big-box and warehouse stores: Costco and Sam's Club carry a rotating selection of mattresses at compressed price points. Costco's return policy is hard to beat, but selection changes frequently.
Amazon and third-party marketplaces: Budget brands like Zinus, Lucid, and Linenspa dominate here. Quality is adequate at the price point, but trial periods are shorter.
Split King Mattresses and Adjustable Bases
A split king is two Twin XL mattresses (38" × 80" each) placed side by side on an adjustable base. The total width equals a standard king (76" × 80"), so standard king sheets still fit with a small seam down the middle.
This setup is the best solution for couples with different sleep preferences, one partner can elevate the head, the other can stay flat, without either mattress moving. It also handles snoring and acid reflux better than any other configuration because each side adjusts independently.
The cost of a split king is roughly double a Twin XL, plus the adjustable base (which typically runs $800–$2,000 for a split-capable model). Many brands offer matching Twin XL pairs and compatible adjustable bases.
Not all mattress models are sold as Twin XL for split king purposes. Memory foam and hybrid models typically work well; traditional innersprings with interconnected coils do not split cleanly. Confirm with the manufacturer before ordering.
What to Look For When Buying a King Mattress
King mattresses amplify whatever you value, and whatever you overlook. A few things worth prioritizing:
Firmness level: Side sleepers generally need a medium to medium-soft (3–5 on a 10-point scale). Back sleepers do well in the medium-firm range (5–7). Stomach sleepers need firm support (7–9) to prevent lumbar sag.
Trial period and return policy: A king mattress is heavy and expensive to return. A minimum 100-night trial is standard among quality brands; some offer 365 nights. Confirm the return is free.
Warranty: Look for at least a 10-year non-prorated warranty. Some brands offer 20-year coverage. Sagging over 1 inch is the standard warranty trigger.
Edge support: Kings need firm perimeter support, especially for couples who use the full width of the bed. Hybrid coil systems generally outperform all-foam on edge support.
Cooling: Larger mattresses tend to trap more heat. If you sleep hot, prioritize open-cell foam, gel infusions, coil layers for airflow, or natural latex.
For a full size comparison across all dimensions, see our mattress size guide. If you are weighing king versus California king specifically, our Cal king vs king comparison breaks down which size fits which sleeper type.
Financing a King Mattress
Most major brands offer 0% APR financing through third-party partners like Affirm, Klarna, or Bread Financial. A $1,500 king breaks down to roughly $83/month over 18 months at 0%, no interest if paid within the promotional period.
One practical note: financing is calculated on the pre-discount price at some retailers. Run any promo first, then apply for financing on the reduced total.
When King Mattress Sales Happen
The mattress industry runs promotions almost continuously, but certain windows produce the deepest discounts. Memorial Day (late May) and Labor Day (early September) are historically the strongest sale periods, it is common to see $300–$600 off kings during these windows.
Black Friday and the post-Thanksgiving week rank close behind. Presidents' Day and current sales are secondary sale events where discounts are real but slightly thinner.
For a broader view of what is on discount right now across brands, see our best mattress deals page. Our best king mattress guide covers top-rated models in depth. For king vs California king sizing, see California king vs queen. And our king size mattress hub covers the full category.
Frequently Asked Questions
What is the standard king size mattress measurement?
A standard king (Eastern king) measures 76 inches wide by 80 inches long. That is 16 inches wider than a queen, and the same length. A California king is 72 inches wide by 84 inches long, narrower but longer.
How much should I expect to pay for a king size mattress?
Budget foam kings start around $800. Mid-range hybrids run $1,200–$2,000 after discounts. Luxury latex and specialty models range from $2,500 to $4,000+.
What is a split king and who needs one?
A split king is two Twin XL mattresses on a split adjustable base. It totals the same width as a standard king but lets each sleeper adjust their side independently. It is ideal for couples with different firmness preferences, or anyone using an adjustable base for snoring or back pain management.
Is a king size mattress worth it for one person?
It depends on how you sleep. Solo sleepers who move a lot at night or need space benefit from the extra width. The trade-offs are cost and room size requirements. If your bedroom is under 11 × 11, a queen is usually a better fit.
When is the best time to buy a king mattress on sale?
Memorial Day and Labor Day produce the deepest discounts at both online brands and retail stores. Black Friday is a close third.
How long does a king mattress last?
Most quality foam and hybrid king mattresses last 7–10 years with proper support (a slatted base or foundation, slats no more than 3 inches apart). Latex models often last 10–15 years. Using a mattress protector extends the life and preserves the warranty.
Can I use a queen bed frame for a king mattress?
No. A king mattress is 16 inches wider than a queen. A queen frame will not support a king mattress properly and most king mattresses will not physically fit. You will need a king-specific frame, platform, or adjustable base rated for the 76" × 80" footprint.