The schedule for flea markets and rummage sales is in full swing in the Yvelines (78) this weekend of September 12 and 13, 2026. Five spots are on the agenda for Saturday, but it’s Sunday that truly stands out, with around twenty gatherings led by the expected crowds in Montesson and Gargenville.
Note that the Perdreauville flea market, originally advertised for this Sunday in front of the town hall park, has been canceled after all: it’s best to head to a nearby venue such as Rosny-sur-Seine or Mantes-la-Jolie.
Two events stand out this Sunday. In Montesson, the city-center flea market is among the department’s busiest, nestled between Rue du Président René Coty and Place Paul Demange. In Gargenville, the brocante spans several streets, promising a rich variety of stalls.
The Gambais Library's book sale remains a fixture on the Yvelines calendar: housed in a sheltered venue, it lets you hunt for bargains dry, whatever the weather, with thousands of books, newspapers and magazines on every topic, from cinema to comics. A two-day event ideal for bibliophiles.
Saturday also has its share with the Beynes flea market on the Étang Plain and the Clairière garage sale in Rambouillet, both benefiting from a lovely natural setting for outdoor bargain hunting.
Practically speaking, entry is free for all of these events. It’s a good idea to check the weekend weather before you head out.
This weekend looks generous for every kind of bargain hunter: head to Montesson or Gargenville for the big flea-market gatherings, Gambais for book lovers, and villages like Boinville-le-Gaillard or Saint-Martin-de-Bréthencourt for a more intimate atmosphere. To broaden your horizons even more, our curated list of flea markets and vide-greniers in Île-de-France remains the best entry point.
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Dates and Opening Time
From September 12, 2026 to September 13, 2026
Location
Yvelines
yvelines
Route planner
Prices
Free
Recommended age
For all
