What is 'Way Day'? A few years ago, Wayfair started its own namesake retail holiday, Way Day. While Wayfair has pretty great deals all year, Way Day promises to be the retailer's biggest sale event of the year. When is 'Way Day'? Way Day kicked off on April 28. Thousands of products are currently marked down, and Wayfair is offering flash deals throughout the duration of the sale. Last year, Way Day was pushed to September due to the Coronavirus outbreak but has since been returned to its original yearly position in April. How long is 'Way Day'? Way Day will last 48 hours, from April 28 to 29. Today is the final day of the sale.