TDK
Travel Data Kit
eSIM provider reviews

Airalo, Saily and Holafly — reviewed

Three providers, three different use cases. Each review covers who it is for, who should avoid it, and what the limits are.

AIR
Airalo
Best for short trips and light data use. Fixed plans from ~$4. Data-only. Wide destination coverage.
Budget-friendly Read Airalo review
SAIL
Saily
App-first, backed by Nord Security. Built-in ad blocker. Unlimited hotspot. Plans from ~$4.
Simple setup Read Saily review
HOLA
Holafly
Unlimited data plans only. For heavy users and long stays. Fair use policy applies. Usually more expensive.
Unlimited data Read Holafly review
How we review
Setup process before departure — not at the airport.
Clarity of plans — data limits, fair use policy, hotspot terms.
Best user profile — who the provider actually suits.
Limits — what the provider does not do well.
Mistakes to avoid — specific to that provider.
When not to use it — including when a competitor is a better fit.
Read our full methodology →
Quick comparison
PROVIDER → BEST FOR
Airalo → Short trips, small plans, budget-conscious travellers
Saily → Week-long trips, privacy-conscious users, hotspot sharing
Holafly → Heavy data users, long stays, remote workers
Affiliate disclosure. Some links on this page are affiliate links. We may earn a commission at no extra cost to you. Reviews are based on practical use, plan transparency and real traveller limits — not affiliate value.