Shomp checks Plank Mattress for new sales every morning. Shomp is not associated with or endorsed by Plank Mattress.
- 25–30%
- Typical advertised discount · best seen 35%
- 90%
- Days with sales · 75 of 83 checked in 90 days
- 9 days
- Longest observed gap · last 90 days
Last sale observed Sep 17, 2026. Check the store for current availability.
Shop storeSale history
70 sale periods from the last 90 days
Past offers are shown for reference. Store links open the homepage.
Up to 25% offLabor Day Sale — 25% off sitewide (use promo code LABORDAY25)2 days
Up to 25% offLabor Day sale — 25% off sitewide with promo code LABORDAY251 day
Up to 25% offLabor Day Sale — 25% off sitewide (use promo code LABORDAY25).1 day
Up to 25% off25% off sitewide — use promo code LABORDAY25.1 day
Up to 25% offLabor Day Sale — 25% off sitewide (use promo code LABORDAY25)1 day
Up to 25% offLabor Day Sale — 25% off sitewide with promo code LABORDAY251 day
Up to 30% offLabor Day sale — 30% off sitewide with promo code LABORDAY30.1 day
Up to 30% offLabor Day/sitewide sale — 30% off sitewide with promo code LABORDAY301 day
Up to 30% offLabor Day Sale: 30% off sitewide — use promo code LABORDAY30.1 day
Up to 30% offLabor Day sale — 30% off sitewide with promo code LABORDAY301 day
Up to 30% off30% off sitewide — use promo code LABORDAY301 day
Up to 30% offLabor Day sale — 30% off sitewide with promo code LABORDAY301 day
Up to 30% offLabor Day Sale: 30% off sitewide (use promo code LABORDAY30)1 day
Up to 30% offLabor Day sale — 30% off sitewide (use promo code LABORDAY30)1 day
Up to 30% offLabor Day Sale: 30% off sitewide.1 day
Up to 25% offLabor Day Sale — 25% off sitewide (use promo code LABORDAY25).1 day
Up to 25% offLabor Day sitewide sale — 25% off sitewide with promo code LABORDAY251 day
Up to 25% offLabor Day Sale — 25% off sitewide (use promo code LABORDAY25)1 day
Up to 25% offLabor Day Sale: 25% off sitewide (use promo code LABORDAY25)1 day
Up to 25% offLabor Day Sale — 25% off sitewide (use promo code LABORDAY25)1 day
Up to 25% offLabor Day Sale — 25% off sitewide (use promo code LABORDAY25)1 day
Up to 25% offLabor Day Sale — 25% off sitewide (use promo code LABORDAY25).1 day
Up to 25% offLabor Day Sale: 25% off sitewide (use promo code LABORDAY25).1 day
Up to 25% offLabor Day Sale: 25% off sitewide (use code LABORDAY25)1 day
Up to 25% offBack to School sale — 25% off sitewide (use promo code SCHOOL25).1 day
Up to 25% offBack to School Sale — 25% off sitewide (use promo code SCHOOL25)1 day
Up to 25% offBack-to-School Sale — 25% off sitewide (use promo code SCHOOL25)1 day
Up to 25% offBack to School Sale — 25% off sitewide (use code SCHOOL25)1 day
Up to 25% offBack to School Sale: 25% off sitewide (use promo code SCHOOL25).1 day
Up to 25% offBack to School Sale — 25% off sitewide (use promo code SCHOOL25)1 day
Up to 25% offBack to School Sale — 25% off sitewide (use promo code SCHOOL25).1 day
Up to 25% offBack to School Sale — 25% off sitewide (use promo code SCHOOL25)1 day
Up to 25% offBack to School Sale: 25% off sitewide (use promo code SCHOOL25)1 day
Up to 25% off25% off sitewide — use promo code SCHOOL251 day
Up to 30% offFlash Sale: 30% off sitewide (use promo code FLASH30)1 day
Up to 30% offFlash Sale: 30% off sitewide — use promo code FLASH30.2 days
Up to 30% offFlash Sale — 30% off sitewide (use promo code FLASH30)1 day
Up to 25% offBack to School Sale — 25% off sitewide (use promo code SCHOOL25)1 day
Up to 25% offBack to School Sale — 25% off sitewide with promo code SCHOOL25.1 day
Up to 25% offBack to School Sale — 25% off sitewide (use promo code SCHOOL25).1 day
Up to 25% offBack to School Sale — 25% off sitewide (use promo code SCHOOL25)2 days
Up to 25% offBack to School Sale — 25% off sitewide (use promo code SCHOOL25)1 day
Up to 25% offBack to School Sale — 25% off sitewide (use code SCHOOL25).1 day
Up to 25% offBack to School Sale: 25% off sitewide (use promo code SCHOOL25).1 day
Up to 25% offBack to School Sale — 25% off sitewide (use promo code SCHOOL25)2 days
Up to 25% offBack to School Sale — 25% off sitewide (use code SCHOOL25).1 day
Up to 25% offSummer Sale — 25% off sitewide with promo code SUMMER25.1 day—
Up to 25% offSummer Sale — 25% off sitewide with promo code SUMMER251 day—
Up to 25% off25% off sitewide — use promo code SUMMER251 day
Up to 25% offSummer Sale — 25% off sitewide (use promo code SUMMER25)1 day—
Up to 25% offSummer sale — 25% off sitewide with promo code SUMMER25.1 day—
Up to 25% offSummer Sale — 25% off sitewide with promo code SUMMER251 day—
Up to 25% offSummer sale — 25% off sitewide with promo code SUMMER25.1 day—
Up to 25% offSummer Sale — 25% off sitewide with promo code SUMMER251 day—
Up to 30% off4th of July / Sitewide sale: 30% off sitewide with promo code JULY301 day—
Up to 30% offSitewide 30% off — use promo code JULY301 day—
Up to 30% off4th of July sale — 30% off sitewide with promo code JULY30.1 day—
Up to 30% off4th of July / Sitewide sale — 30% off sitewide (use promo code JULY30)1 day—
Up to 30% offSitewide 30% off — use promo code JULY301 day—
Up to 30% off30% off sitewide — use promo code JULY301 day—
Up to 30% off4th of July Sale — 30% off sitewide with promo code JULY302 days—
Up to 30% off4th of July Sale — 30% off sitewide (use promo code JULY30)1 day—
Up to 30% off4th of July sitewide sale — 30% off sitewide (use promo code JULY30)1 day—
Up to 30% off4th of July Sale — 30% off sitewide (use promo code JULY30)1 day
Up to 30% off30% off sitewide with promo code JULY301 day
Up to 30% off4th of July Sale — 30% off sitewide (use promo code JULY30).1 day
Up to 30% off4th of July Sale — 30% off sitewide (use promo code JULY30)1 day
Up to 30% off4th of July Sale — 30% off sitewide with promo code JULY30.1 day
Up to 25% off4th of July Sale — 25% off sitewide (use promo code JULY25)1 day
Up to 25% off4th of July Sale: 25% off sitewide (use promo code JULY25)1 day
Plank Mattress seasonal sale history
Explore recorded dates, offers, and snapshots for each event.