Amazon Prime Day is held once a year, typically in July. It started in 2015 and has traditionally been a mid-July event lasting from one to four days. In recent years, Amazon has also added a second similar sales event in October called Prime Big Deal Days, which serves as a warm-up for the holiday shopping season. So, effectively there are two major Prime-member-only sales events annually: the main Prime Day in July and the Prime Big Deal Days in October. Both require an active Amazon Prime membership to access the deals.
Summary:
- Main Amazon Prime Day: Annual, usually mid-July, lasting 1-4 days.
- Prime Big Deal Days: Annual, held in October, lasting 1-2 days.
- Both events exclusive to Prime members and offer large discounts.
The most recent Prime Day in 2025 was from July 8 to July 11, and Prime Big Deal Days in October 2025 happened from October 7 to October 8.
