India · Sale event
Flipkart Big Billion Days 2027 Marketing Guide: Dates, Campaign Timeline and Ideas
The short answer
- Dates
- Early to mid October, timed to the run between Dussehra and Diwali. The 2026 edition, its thirteenth, began on 9 October with early access the day before.India, 2027, not announced
- How certain
- Typical windowTaken from when this ran in past years. The 2027 dates are not announced, so no exact date is shown.
- Source
- FlipkartChecked 10 October 2026
Note: 2027 dates not announced. Flipkart sets these dates and announces them a few days ahead, so this entry shows the typical window only. The weekly check upgrades it the day Flipkart announces.
What it is, and why advertisers care
Flipkart's festive sale, and one of the two events that define the Indian ecommerce year. It runs for several days in October, with paid-tier members getting early access before general access opens. Flipkart announces the dates a few days ahead, so planning has to work off the window rather than the date.
What people are actually buying
Descriptions of the occasion, not promises about what will work. What works is an account question and this page has no data on your account.
- bid pressure across the whole category for the duration
- early access day as a separate audience
- own-site traffic drops while it runs
Who gains
| Category | Why |
|---|---|
| Ecommerce | the whole category bids into the same days |
| Electronics | the planned big-ticket purchase of the year lands here |
| Fashion and apparel | new clothes are part of the occasion itself, not an upsell |
| Home and furniture | cleaning and refreshing the house comes before the day |
| FMCG | pack sizes and multipacks move on household stocking up |
Ad platform notes
Nothing here yet. A note only goes in this section when a platform documents something about this moment on its own help or business pages, with the link. Plenty of advice about seasonal bidding circulates without a platform ever having said it, and an empty section is more useful to you than a repeated claim.
For how the auctions themselves behave, the sourced version is in the algorithm pages linked at the bottom of this page.
Before you launch
Creative
- One set of assets per placement, not one resized five ways. Current dimensions: google ads, meta ads, facebook.
- Offer legible at thumbnail size, before anyone taps.
- Dates on the creative if the offer ends, so nothing runs stale.
Measurement, and what breaks
- Check conversion tracking before the spend ramps, not after.
- Agree the attribution window now. Changing it mid-season makes the numbers unreadable.
- Compare against the same weeks last year in your own account, not against a published benchmark.
- The three that actually land mid-season: facebook ad account spending limit reached, advantage plus campaign not spending, facebook catalog products rejected.
- Keep a note of what you changed and when, so next year starts from evidence.
Official sources
- Flipkart's Big Billion Days Returns for Its 13th Edition on October 9
Flipkart · accessed 9 October 2026
Last verified 10 October 2026. Every source above is re-fetched monthly and the quoted line is checked against it again. If a source disappears, the page says so rather than dropping the date.
Where to go next
Creative sizes and specs
the current dimensions, from each platform's own documentation
When it breaks
the disapprovals and delivery problems that actually land mid-season
How the platforms rank and price
official ranking signals, sourced, not recycled myths
The terms
plain definitions, with a position taken
What changed this month
A campaign planned in September and launched in October runs on whatever the platforms shipped in between.