Flea markets and garage sales in Yvelines on September 19–20, 2026 — 78

Head to the Yvelines (78) for this weekend of September 19-20, 2026: three spots kick things off on Saturday, including the Versailles merchants’ clearance sale in the heart of the town, then a further twelve pick up the pace on Sunday, from Conflans-Sainte-Honorine to Mareil-sur-Mauldre. A neat back-to-school lineup for the department’s flea markets and car boot sales.

Saturday, September 19, 2026

• Bullion (78830): flea market at Jean Teinturier Stadium.
• Senlisse (78720): Pop&Broc, 2nd edition, at Centre H2e.
• Versailles (78000): merchants’ fair and street market in the town center.

Sunday, September 20, 2026

• Conflans-Sainte-Honorine (78700) : flea market in the ZA des Boutries (business park).
• Aubergenville (78410) : children's, baby and early-childhood clothing sale at the covered market.
• Follainville-Dennemont (78520) : Dennemont flea market at the stadium.
• Gazeran (78125) : flea market at the town hall’s salle des fêtes and on the outdoor parking lot.
• Gommecourt (78270) : general sale, 22 Rue des Écoles.
• Le Chesnay (78150) : Saint-Matthieu flea market, at the Sabretache forest park.
• Le Perray-en-Yvelines (78610) : back-to-school flea markets in the town center.
• Magnanville (78200) : flea market, in the parking lot of Lycée Léopold Sédar Senghor.
• Mareil-sur-Mauldre (78124) : annual flea market hosted by the town festival committee, in the town hall gardens.
• Médan (78670) : flea market in the village center.
• Rolleboise (78270) : flea market, Bois Prévost path.
• Trappes (78190) : flea market at the Youri Gagarine Sports Complex.

Saturday, Versailles kicks things off with its merchants’ festival paired with a street sale in the town center: a chance to mix shopping, great deals and a neighborhood vibe right at the foot of the palace. In Bullion and Senlisse, two quieter southern villages complete the day, notably with the second edition of Pop&Broc, a concept that’s gaining traction.

• To be read
• Where to shop for bargains in Paris?
• Best bets for the week of September 14–20, 2026 in Paris and Île-de-France
• 10 things to do in Yvelines this weekend of September 12–13, 2026

On Sunday, the Conflans-Sainte-Honorine flea market is leading the pack at the Boutries business park, highlighted by organizers as the day's flagship event. Not far away, Mareil-sur-Mauldre hosts its annual flea market in the town hall gardens, a sure-fire highlight of the local calendar, while Gommecourt bets on its all-purpose fair, well established as well.

Families aren’t left out with Aubergenville’s children’s, baby and toddler clothes swap, a practical way to build a fall wardrobe without breaking the bank. And for those who prefer a more intimate setup, the villages of Médan, Rolleboise, and Le Chesnay offer a quieter kind of scouting—away from the crowds of the big events.

Admission is free everywhere, and it’s wise to keep an eye on our weather outlook for Île-de-France this week before you head out, with forecasts of a heat spike followed by a sharp drop in temperatures.

Whether you're after home textiles at Aubergenville's covered market, a collectible piece in Conflans, or just a shopping stroll in Versailles, this weekend ticks all the boxes. Looking to branch out? Our selection of flea markets and garage sales in Île-de-France also covers the neighboring departments.

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