Whit Monday Flea Market – L'Isle-Adam
The ACIA's great summer event: 400 stalls across 4 pedestrian streets and 2 km of displays in the town centre
About Whit Monday Brocante
The Whit Monday Flea Market – L'Isle-Adam's great summer gathering
L'Isle-Adam, the so-called "beach of the Parisians", hosts one of the most impressive flea markets in Val-d'Oise every Whit Monday. The ACIA spreads up to 400 exhibitors – both private individuals and professional dealers – across 4 pedestrian streets in the town centre, creating a 2-kilometre corridor of stalls. The 2025 edition was the 40th, a testament to the event's enduring popularity.
What makes this market truly special is its festive dimension: outdoor concerts, spit-roasted pork and all-day entertainment transform it into a vibrant popular celebration. The market is open from 6 AM to 6 PM with free entry. Seller pitches cost €12/linear metre (minimum 2 m) and can be booked by phone from 20 April.
Whit Monday Brocante — edition 2026
Prices Whit Monday Brocante 2026
Practical information — Whit Monday Brocante
Practical Information
Venue
Town centre, 4 pedestrian streets, 95290 L'Isle-Adam
Getting there
Transilien line H from Paris-Gare du Nord to L'Isle-Adam – Parmain. By car: N184 from Pontoise, D4 from Beaumont-sur-Oise. Car parks on the outskirts of the town centre.
Hours
6 AM – 6 PM. Free entry for visitors.
Seller fees
€12 per linear metre (2 m minimum). €15 for walk-ins. Phone reservations Monday–Friday 4–8 PM from 20 April: 06 24 19 58 48.
Entertainment
Outdoor concerts, spit-roasted pork, all-day entertainment.
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