While Réunion is an overseas department of France, the 'Roam Like at Home' (RLAH) policy for EU citizens often comes with significant caveats. Many non-French EU carriers implement 'Fair Use Policies' that can severely cap data speeds or impose charges after a modest threshold, especially in remote territories. For UK and US SIM cards, roaming in Réunion will almost certainly incur substantial, high-cost international rates from carriers like AT&T, Verizon, or Vodafone UK. DataESIM offers transparent, high-volume plans specifically for Réunion, bypassing these unpredictable and expensive roaming fees.
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Will my UK, US, or non-French EU SIM card incur roaming charges in Réunion, or is it free?
Updated April 22, 2026
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