Full details of the Mattress Online January sale appear below with start and end dates where available. The information is not just restricted to their 'Jan sale' however - we display info on their Boxing Day 2025 sale and 2026 New Year and Winter clearances. This is usually the biggest online clearance at Mattress Online and represents the best opportunity to find the biggest deals & bargains in their online store.
January Sale Information (Past & Present)
Promotion
Starts
Ends
17-Jan-2022 23-Jan-2022
Jump into the savings dreamland, with up to 60% off in the sale at Mattress Online! 
New Year's Day 2021 10-Jan-2021
Dream splendid savings into reality with up to 70% off in the Mattress Online January Sale!
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Boxing Day @ Mattress Online
So, you grabbed lots of Mattress Online bargains for your friends & family's Christmas presents while at the same time noting down a few things you thought would make fantastic Boxing Day deals for yourself. So all you need now is information on the 2025 boxing day sale at Mattress Online start time and what you can expect to save. Well you're on the right web site as our Boxing Day Sales Page is dedicated to collating just that information for Mattress Online and many other favourite retailers and travel agents.
FAQs
When will the Mattress Online January sale begin in 2026?
We've previously seen the Mattress Online January sale starting around 1 January and 2026 should be no different!
When will the Boxing Day sale at Mattress Online start in 2025?
We expect the Mattress Online Boxing Day sale to start on 22 December this year - similar to previous years.
When is the Mattress Online pre-Christmas sale likely to start in 2025?
Based on previous years, we expect the Mattress Online pre-Christmas sale to start around 8 December.
When did the pre-Christmas sale at Mattress Online start in 2024?
In 2024, the Mattress Online pre-Christmas clearance sale started on 8 December with savings of up to 50%.
When did the January sale at Mattress Online start in 2025?
The 2025 Mattress Online January sale started on 1 January.
When did the 2023 Mattress Online Boxing Day sale start?
In 2023, the Mattress Online Boxing Day sale began on 22 December with discounts of up to 50%.
When did the 2024 Mattress Online January sale start?
In 2024, the Mattress Online January sale began on 1 January with discounts of up to 50%.
When did the 2022 January sale start at Mattress Online?
In 2022, we heard about the Mattress Online January sale on 1 January with 60% discounts.
When did the Mattress Online 2021 January sale begin?
In 2021, the start of the Mattress Online January sale was on 1 January with 70% savings.
Big Sale
Lucky Dip
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