Will I incur roaming charges in Ireland with my UK (Post-Brexit) or US SIM card, or is eSIMFlyer more cost-effective?

Travelers to Ireland should be aware of potential roaming charges. For UK SIM card holders post-Brexit, most major carriers like O2, Vodafone, Three, and EE have reinstated daily roaming fees (typically £2-£6) for EU destinations, including Ireland. US, Canadian, and other non-EU/EEA travelers will face significantly higher pay-as-you-go rates. eSIMFlyer offers a straightforward, prepaid solution, providing instant data upon landing at Dublin (DUB) without the worry of unexpected roaming costs, making it a savvy choice for budget-conscious travelers.