Best eSIM for International Travel: Match the Plan to Your Route

Short answer: the best eSIM depends on your route, not the brand. For one region, buy a regional plan. For two regions, two regional plans usually cost less than one global plan. For three or more regions, a global plan is simpler and often worth it.

Most “best eSIM” lists rank providers by the number of countries they cover. That number tells you very little. What matters is whether your countries are on the plan, and what each gigabyte costs on that route.

I’ve compared five providers that way below, including my own. Where a competitor is better value, I’ve said so.

Which travel eSIM has the widest coverage?

Saily and Holafly list the most destinations overall, at 200+. But no single plan covers all of them. You buy a country, regional or global plan, and each has its own list.

Here’s what the global plans actually cover:

Provider	Destinations overall	Countries on the global plan
Airalo	200+	170 (Discover)
Holafly	200+	160+ (Plans subscription)
Saily	200+	121
BazTel	160+	119
Nomad	200+	100+

Sources: Airalo via Jetpac, Holafly via TelcoNews, Saily via Cybernews, Nomad via Yesim. Checked June–October 2026.

A bigger list doesn’t always help. BazTel’s global plan, for example, leaves out Vietnam, but our Asia plan includes it. Always search for each country by name before you buy.

Which eSIM works across multiple countries?

Any regional or global eSIM does. You install it once, and it connects to a local network in each country on its list. There’s no switching at borders.

There are three plan types, and each suits a different route:

Plan type	Covers	Best for
Country	One country	A trip to one place
Regional	One region, e.g. 34 European countries	Multi-country trips in one region
Global	Around 100–170 countries	Three or more regions, or unplanned routes

Regional plans are usually the sweet spot. On BazTel, Europe data costs about US$1 per GB, while global data costs about US$4.50. You pay for breadth whether you use it or not.

Our guide to using one eSIM across multiple European countries covers border-hopping in more detail.

Can one eSIM cover Europe and Asia?

Yes. A global plan covers both. But for most Europe-and-Asia trips, two regional plans are cheaper.

Here’s a 30-day trip using 20GB, split evenly between the two regions:

Option	20GB, 30 days	Per GB
BazTel Europe 10GB + Asia 10GB	US$40	US$2.00
Saily global 20GB	US$60.29	US$3.01
Saily Europe 10GB + Asia 10GB	US$64.78	US$3.24
BazTel global 20GB	US$72	US$3.60

The trade-off is convenience. Two plans mean two installs and switching your data line when you change region. That takes about a minute. A global plan does it for you.

The route test: list your regions. One region: buy regional. Two regions: buy two regional plans. Three or more: compare one global plan against the regional ones.

BazTel’s Asia plan covers 20 countries, including Japan, South Korea, Thailand, Vietnam, Singapore, India and Indonesia.

What about unlimited data across regions?

This is where the global market gets uneven. Unlimited global plans are priced very differently:

Provider	Global unlimited price	About per day
Holafly Plans	US$64.90 a month	US$2.15
Airalo Discover	US$159 for 30 days	US$5.30
BazTel global	US$9 a day	US$9.00
BazTel Europe only	US$2 a day	US$2.00

If you’re traveling for a month across several regions and use a lot of data, Holafly’s subscription is hard to beat on price. Check its fair-use terms first, because Holafly doesn’t publish a daily threshold. We tested that in our BazTel vs Holafly comparison.

BazTel’s unlimited is strongest inside Europe, at US$2 a day with a published 2GB daily limit. Most travelers don’t need unlimited at all, though. Our unlimited vs fixed data guide shows how to check.

What is the best eSIM for international travel?

There isn’t one winner. Here’s an honest pick by route:

Your trip	Best value	Why
Europe, one or many countries	BazTel Europe	About US$1 per GB, 34 countries including the UK and Switzerland
Asia, one region	BazTel Asia or Saily	Within a few dollars of each other; BazTel US$30 vs Saily US$32.39 for 10GB
Europe and Asia	Two BazTel regional plans	US$40 for 20GB, about a third less than any global plan above
Three or more regions, light use	A global fixed plan	Saily or BazTel; compare price per GB for your data size
A month or more, heavy use, many regions	Holafly Plans	About US$2 a day unlimited, if its fair use suits you

Price isn’t the only factor. Check that the plan allows hotspot, names its networks, and installs easily. BazTel installs in one tap with no QR code, allows hotspot on every plan, and lists its carriers on each country page.

For head-to-head detail, see BazTel vs Airalo, BazTel vs Saily and BazTel vs Nomad.

Before you buy: a 4-point checklist

1. Check your phone. It must support eSIM and be carrier-unlocked. See our eSIM compatibility list.
2. Check every country by name on the plan’s list, not just the region.
3. Estimate your data. Most travelers use about 1GB a day. Add 20% for travel days.
4. Compare price per GB, not plan price. Divide the price by the gigabytes.

Then install the night before you fly. It takes a couple of minutes, and the plan doesn’t start until you connect abroad. Here’s how long eSIM activation takes.

Frequently asked questions

What is the best eSIM for international travel?

It depends on your route. For one region, a regional plan is best value. For Europe, BazTel costs about US$1 per GB. For three or more regions, a global plan from Saily or BazTel is simplest.

Which travel eSIM has the widest coverage?

Saily, Holafly, Airalo and Nomad each list 200+ destinations overall. On a single global plan, Airalo Discover covers the most, at 170 countries. BazTel covers 160+ destinations, with 119 on its global plan.

Which eSIM works across multiple countries?

Any regional or global eSIM. It connects to a local network in each listed country, with no switching at borders. Check every country on your route is on the plan’s list.

Can one eSIM cover Europe and Asia?

Yes, a global plan covers both. But two regional plans are usually cheaper. With BazTel, 10GB for Europe plus 10GB for Asia costs US$40, against US$60–72 for a 20GB global plan.

Is a global eSIM worth it?

For three or more regions, often yes. For one or two regions, regional plans usually cost less per gigabyte.

How we compared

We compared plans on route coverage and price per gigabyte, not headline destination counts. BazTel prices are current as of October 2026. Competitor prices come from independent reviews dated June–August 2026, linked above. Prices change often, so check before you buy.