Over the last decade we’ve used SIMs and eSIMs across 90 countries while travelling full time through van life, sailing, ski seasons, and remote work travel.

Since we started traveling and working in 2018, it feels like we’ve been on a constant hunt for SIM cards.

Bulgaria, Australia, Chile, Japan. Different countries, same routine: land, find a phone shop, try to understand the plans, hunt around for that little paperclip doohickey, swap SIMs, and pray it works.

It’s often the most stressful part of arriving somewhere new.

You need to navigate a new city, message your Airbnb host, and just try to get your bearings after a long travel day, but before any of that you need to track down a tiny microchip in a foreign city… without any internet.

eSIMs have changed that completely.

No more swapping plastic cards or hunting down WiFi just to get connected. You can land in a new country and be online instantly.

But not all eSIMs are equal. Some have patchy coverage, others are confusing to set up, and a few just don’t deliver when you actually need them.

The good ones? You don’t have to think about them at all. They just work.

This guide breaks down the best eSIM for international travel based on real-world use. Where they work, where they don’t, and which ones we actually keep coming back to.

If you just want something that works without thinking too much about it, we usually go with Saily.

• Saily: Best overall
• Airalo: Best for short trips
• Nomad: Useful backup
• Roamless: Best for flexibility
• Holafly: Best unlimited plans

eSIM Comparison Table

What Is an eSIM (And Why It’s So Useful for Travel)

An eSIM is a digital SIM card you purchase online and install on your phone (like an app). No swapping plastic cards, no hunting down phone shops after a long flight. Some work locally just in one country, other regionally, and there are even some with near global coverage.

The first time we really understood how useful that was, we were sailing from Bari in Italy to Corfu in Greece.

Kelli had a meeting scheduled, and we couldn’t afford to miss it but we also had a weather window we needed to take.

As we sailed away from the Italian coast, the last bars of signal disappeared. We crossed our fingers and waited.

Then, before we even saw land, the connection came back.

Kelli took her meeting from the cockpit as Corfu slowly appeared on the horizon. It was a single moment that represented a significant shift in how we travel.

No scrambling for a SIM. No stress on arrival. Just… connected.

What Actually Matters When Choosing an eSIM

1. Coverage

Not all eSIMs connect to the same networks.

Before traveling back to my home country, Australia, it should have been me who organized the eSIM. But Kelli was confident, and pretty chuffed with herself after finding what looked like an incredibly cheap deal on the national carrier, Telstra.

Suspicious (Telstra aren’t exactly known for bargain pricing), I asked her to double check.

“See — Telsim!”.

An easy mistake to make if you’re not looking closely.

The eSIM worked fine in cities, but once we got out into rural and coastal Australia, coverage dropped off quickly, and we were stuck on slower 4G and sometimes worse.

It was a good reminder that not all eSIMs use the same networks and the difference really shows once you leave the city.

2. Speed & Reliability

Some carriers throttle speeds or prioritize local users and that can make a big difference.

Understanding your own needs and the limits of the eSIM you’re buying is key.

“Unlimited data” sounds like a great deal, and if all you need is Google Maps, emails, and the occasional scroll, it probably is.

But if you’re planning to upload YouTube videos, hotspot your laptop, or jump on video calls, reliable access to faster speeds matters more than having “unlimited” data.

We’ve found that some plans are perfectly usable for day-to-day travel, but quickly fall apart once you try to do anything data-heavy.

3. Price vs Data Value

Cheapest isn’t always best, especially if you burn through data quickly.

The first few eSIMs we tried were cheap. Miraculously cheap.

But between navigation, uploading photos, video calls, and the odd bit of scrolling, we burned through the data in just a few days.

Suddenly, we were rationing usage, turning things off, and topping up anyway, which ended up costing more than if we’d just bought a bigger plan to begin with.

We’ve found that paying for an eSIM that actually matches how you use your phone is better value in the long run.

4. Ease of Setup

This is where international eSIMs really shine… when they just work.

We once bought a local eSIM in Japan while waiting in the airport. It came with a PDF of instructions in questionable English, screenshots of phone settings, and red circles drawn in what looked like MS Paint.

After a frustrating hour of passing the phone back and forth, we eventually got it working but it wasn’t exactly seamless.

And that’s not unusual. Some local eSIMs require registration with official ID, uploading documents, and even taking a selfie holding your passport.

Which means the whole process a) requires internet, and b) often happens at the worst possible moment, like standing in a bus station at 2am, tired, with no connection.

In contrast, international eSIMs are usually designed for travelers, quick to install, easy to activate, and far less friction when you actually need them most.

5. Multi-Country Travel

Critical for those planning on travel to a number of countries and regions.

Part of the appeal of an eSIM is the ability to set it up once and forget about it.

But if your eSIM only works in one country, you haven’t really solved the problem — you’ve just moved it online.

We’ve found that when you’re on the move, having to switch plans every time you cross a border quickly becomes just as frustrating as swapping physical SIM cards.

Finding an eSIM that works across the regions you’re traveling in, whether that’s Europe, Southeast Asia, or beyond makes a huge difference.

Best eSIMs for International Travel

1. Saily – Best Overall

Why it stands out

• Good balance of price and performance
• Strong coverage across most regions
• Simple setup with minimal friction

Saily eSIM – Quick Stats

• Coverage: 200+ countries
• Data: 1GB–unlimited
• Validity: 7–365 days
• Price: ~$4–$25 typical
• Speeds: 4G/5G via local networks
• Setup: Very easy app + auto activation
• Hotspot: Supported
• Best For: All-round travel + simplicity
• Downside: No number/SMS on most plans

We’ve found Saily hits a really nice middle ground. It’s not always the absolute cheapest, and it doesn’t try to offer everything but it consistently works.

For us, that’s what matters most. Landing in a new country and being connected within a few minutes without thinking too much about it.

It’s become our default for most trips.

At the time of writing (April 2026), Saily is offering a discount (around 10%) for esims over 10 Gb, which is a nice bonus if you’re already planning to use it.

2. Airalo – Best for Short Trips

Why it stands out

• Cheap entry-level plans
• Huge global coverage
• Good for quick trips or light use

Airalo eSIM – Quick Stats

• Coverage: 200+ countries
• Data: 1GB–100GB + some unlimited plans
• Validity: 7–180 days
• Price: ~$4–$25 typical
• Speeds: 4G/5G depending on destination
• Setup: Easy app + QR installation
• Hotspot: Supported on most plans
• Best For: Budget travel + short trips
• Downside: Data-only on most plans (no number/SMS)

Airalo is often one of the cheapest ways to get connected, especially if you’re only travelling for a few days or don’t use much data.

We’ve found it works well for basic travel needs — maps, messaging, bookings — without spending much.

That said, once you start using more data, data caps kick in and the value drops off pretty quickly compared to more balanced options.

3. Nomad – Useful Backup Option

Why it stands out:

• Designned with ‘Nomads ‘ in mind
• Flexible regional plans
• Good value on larger data packages
• Reliable speeds in many countries

Nomad eSIM – Quick Stats

• Coverage: 200+ countries
• Data: 1GB–unlimited
• Validity: 7–365 days
• Price: ~$5–$45 typical
• Speeds: 4G/5G on local partner networks
• Setup: Easy app + QR installation
• Hotspot: Supported
• Best For: Longer trips + regional travel
• Downside: Smaller plans can be pricier than competitors like Airalo

As its name suggests, Nomad feels a bit more geared toward longer trips with heavier data needs than some of the ultra-budget eSIM providers.

We’ve found it useful as either a primary eSIM for bigger trips or a backup option when another provider isn’t performing well in a particular country.

Pricing on small plans isn’t always the cheapest, but once you move into larger regional packages, the value tends to improve quite a bit.

4. Roamless – Best for flexibility

Why it stands out:

• True pay-as-you-go flexibility
• Credits never expire
• Built in call + text feature

Roamless eSIM – Quick Stats

• Coverage: 200+ countries
• Data: Pay-as-you-go + fixed plans
• Validity: No expiry on FLEX credits
• Price: From ~$2.45/GB pay-as-you-go
• Speeds: 4G/5G depending on network
• Setup: Easy app + one-time eSIM install
• Hotspot: Fully supported
• Best For: Frequent travellers + multi-country trips
• Downside: Heavy data users may get better value from large fixed-data plans elsewhere

Roamless feels genuinely different from most eSIM providers because it focuses heavily on flexibility rather than fixed packages.

Instead of buying a separate eSIM or plan for every country, you install one global eSIM once and simply use data as you go. Any unused credit stays on your account rather than expiring after a trip, which is surprisingly rare in the eSIM space.

We probably wouldn’t use it as our only eSIM for very heavy data use, but for slower travel, hopping between countries, or as a backup eSIM, it’s one of the most convenient setups we’ve come across.

Holafly: Best unlimited plans

Why it stands out:

• Unlimited data plans
• Simple pricing by trip length
• Great for heavy data users

Holafly eSIM – Quick Stats

• Coverage: 200+ destinations
• Data: Unlimited plans available
• Validity: 1–90 days
• Price: ~$2–$5/day depending on trip length
• Speeds: 4G/5G on local partner networks
• Setup: Very easy app + QR installation
• Hotspot: Supported, but often capped daily
• Best For: Heavy data use + longer travel days
• Downside: Premium pricing and “unlimited” speeds may throttle after very heavy usage

Holafly is probably the easiest recommendation for people who don’t want to think about data limits while travelling.

If you stream a lot, work online, upload photos regularly, or just don’t want the mental load of tracking usage, unlimited plans are genuinely convenient.

That simplicity does come at a cost though. Holafly is usually more expensive than capped-data competitors, and like most “unlimited” mobile products, fair usage policies can still slow speeds after very heavy use.

eSIM vs Local SIM vs Roaming

• eSIM – Fastest and easiest. Install before you arrive and connect instantly.
• Local SIM – Often the cheapest for long stays, but requires time and effort to set up.
• Roaming – Convenient, but usually expensive (and honestly not much more convenient now that eSIMs are so simple).

We resisted eSIMs for a long time.

Convinced we were getting the best deal by landing in a new country and hunting down local SIM cards on arrival and for a while, that was probably true.

But things have changed.

Data has become cheaper, coverage has improved, and international eSIMs have caught up.

These days, we’ve found the balance has shifted. For most trips, the convenience, flexibility, and peace of mind of eSIMs outweigh the small savings you might get from going local.

For us, eSIM has become the default.

When eSIMs Don’t Work Well

eSIMs are incredibly convenient. But they’re not a perfect solution every time or everywhere.

There are a few situations where they tend to fall short:

Remote areas (or offshore)
Once you’re out of range of towers, there’s no signal — eSIM or otherwise.

Sailing offshore, we’ve watched full bars drop to nothing once you get out of sight of a tower. At that point, it doesn’t matter which provider you’re using — you’re simply out of range.

Similarly, coverage can drop off quickly once you leave cities and major towns, especially if your eSIM doesn’t connect to the widest local networks.

We’ve noticed this most on long drives and in national parks. Perfectly fine in town, then patchy or non-existent just a bit further out.

Heavy data use
Even when you have signal, speeds can be limited or throttled after a point, especially on cheaper or “unlimited” plans.

For everyday use they’re usually fine, but things like uploading videos, hotspotting, or long calls can push them beyond their limits.

eSIMs are brilliant for convenience, flexibility, and quick connection but they work best as part of a broader setup, not a perfect, everywhere solution. If you have specific heavy data or way off-grid needs, deeper research is often required to compare between all your options including eSIM, local sims, satellite phone and internet.

How Much Data Do You Actually Need?

A simple way to think about it is in terms of 1–2 weeks of travel (which is how most eSIM plans are structured):

Light use: 3–5GB (per 1–2 weeks)
Checking email, scrolling, maps, and messaging.
You’re mostly relying on WiFi for anything heavier like work or streaming.

Normal travel: 5–10GB (per 1–2 weeks)
A mix of WiFi and mobile data.
You might hotspot your laptop occasionally, stream a movie on a train or flight, and use maps constantly, but still lean on WiFi when it’s available.

Work use: 20GB+ (per 1–2 weeks)
Video calls, meetings, accessing documents, and regular hotspotting.
You’re working on the go, but still offloading bigger tasks to WiFi when possible.

Heavy use: 50GB+ (per 1–2 weeks)
Large uploads/downloads, frequent hotspotting, streaming, or things like gaming.
At this point, you’re relying on mobile data as your primary connection.

Where and how you travel make a huge difference

Sailing, for example, we now have Starlink on board, so we only really use mobile data when we’re close to shore and within range of a tower.

When we’re staying in Airbnbs, we rely heavily on the in-home WiFi and use eSIM data more as a backup or for getting around during the day.

But on the move — road trips, flights, arriving somewhere new — that’s when mobile data does most of the heavy lifting.

We’ve found it’s almost always better to slightly overestimate your needs rather than run out halfway through a trip.

Topping up mid-trip is usually more expensive and far more frustrating than just getting the right plan from the start.

How to Set Up an eSIM (Simple Steps)

One of the main things that stops people (our parents, for example) from ditching their home carrier while traveling and getting stung with fees of $5–$10 per day is the perception that setting up an eSIM is complicated.

In reality, the big providers have smoothed this out to the point where it’s about as simple as installing any other app.

The basic process looks like this:

• Buy your plan
• Scan the QR code
• Activate the eSIM
• Turn on data

That’s it. The whole thing usually takes just a few minutes and can be done before you set out for the airport.

Our Real Setup (What We Actually Use)

Right now, our setup usually looks something like this:

• Primary: eSIM (often Saily)
• Backup: local SIM, second eSIM, or whatever WiFi we can find
• Heavy use: Starlink, marina WiFi, cowork spaces or Airbnb internet

That setup changes depending on where we are and how we’re traveling.

Right now, we’re in rural Thailand, staying in a villa with blazing fast WiFi and working mostly from home.

That means the only mobile data we really need is for maps and getting around.

We’re also here for a full month and not traveling to other countries in this region, so we’ve gone with a local eSIM from Thailand’s AIS, which costs about $10 per week for unlimited data.

Next, we’re heading to Europe — Amsterdam for a month, Athens for a couple of months, and then back to the boat in the Greek islands.

For that kind of multi-country travel, we’ll switch back to an international eSIM and set it up before we arrive so we’re connected straight away.

Knowing how you travel — and what you actually use your phone for — makes a huge difference when choosing the right setup.

There’s no single perfect solution, but having a simple system that works for your travel style makes everything a lot easier.

Final Verdict: Which eSIM Should You Choose?

If you’ve made it this far, the answer is actually pretty simple:

• Want the easiest, most reliable option → Saily
• Want the cheapest option for a short trip → Airalo
• Need a second backup SIM? → Nomad

For us, we keep coming back to Saily.

It strikes the best balance between price, performance, and simplicity — and most importantly, it just works without much thought. That’s exactly what we want when we land somewhere new.