Best Travel eSIM 2026: Airalo vs Holafly vs Saily vs Nomad Compared

First: do you even need one?

A travel eSIM is a good product for a specific trip shape — short, in a country your home plan doesn't cover, with moderate data use. Outside that shape it's either unnecessary or actively worse value than the alternatives, and the pages ranking above this one have no incentive to tell you which case you're in.

The break-even, in four lines

If you land on "Wi-Fi is enough", the companion piece on staying connected abroad covers free Wi-Fi apps, country-by-country Wi-Fi quality and in-flight options in detail. Just treat public networks with the caution they deserve — our guide to working securely on public Wi-Fi explains why café networks are the weakest link in a travel setup.

Still here? Then a travel eSIM probably does make sense for your trip, and the rest of this page is about picking the right one.

The six providers, and who actually owns them

Airalo, Holafly, Saily and Nomad account for most of the travel eSIM market and nearly all of the search results. They're marketed as four independent choices, but two of them are limbs of much larger companies — which is worth knowing before you decide whose privacy promises to believe.

In September 2026 a fifth arrived from the other direction: T-Travel, a carrier-run eSIM from the Deutsche Telekom Group. It isn't an affiliate of ours, and it gets its own section below on what a carrier name does and doesn't buy you.

In October 2026 we added a sixth: Wise, the money-transfer company, which now sells travel eSIMs to its own customers inside its app. It isn't an affiliate either, and because its prices are only visible once you're logged in, we read them from a real account — the Wise section has them.

"Unlimited" — the most misreported claim in the category

Four of these six providers sell a plan labelled unlimited that has a hard daily volume cap written into the terms; Holafly's has none, and Wise doesn't sell an unlimited plan at all. That isn't a scandal — the caps are published and mostly reasonable — but it does mean the word tells you almost nothing, and comparing two "unlimited" plans on price alone compares two different products.

• Airalo: A hard daily ceiling. Enough for maps, messaging and a few videos. After the cap: Around 1Mbps for the rest of the day.
• Saily: The highest published daily allowance of the capped providers. After the cap: Around 1Mbps for the rest of the day.
• Nomad: The lowest cap and the harshest throttle — 512kbps struggles with video. After the cap: 512kbps for the rest of the day.
• Holafly: The only one with no stated daily ceiling. The catch is that nobody outside Holafly knows where the throttle starts. After the cap: Unpublished operator fair-use throttle.
• T-Travel: Same ceiling as Airalo. The window starts from your first use, not midnight, and the policy says carrying on at 1Mbps is normal use, not misuse. After the cap: 1Mbps until the 24-hour window resets.
• Wise: Wise sells only fixed-data plans, the largest a 100GB global plan. Nothing to misread here, but nothing for a heavy streamer either. After the cap: Not applicable — every plan is a fixed amount of data.

Give Holafly its due first

Holafly is the one provider here whose unlimited plan has no daily volume ceiling. That is a genuine, meaningful difference, and it's the reason Holafly wins for a specific kind of traveller: one phone, one country, a couple of weeks, and no interest in counting gigabytes. If you'd otherwise spend the trip watching your data meter, that's worth real money.

The criticism isn't the claim. It's what sits behind it.

Hotspot and tethering — the buried dealbreaker

If you travel with a laptop or a tablet, this is the single most decisive line in the whole comparison, and it appears near the bottom of almost every page that ranks for these searches. Tethering limits are set separately from your plan's data allowance, which is how an "unlimited" plan can leave you unable to get a laptop online.

• Saily: Tether freely — your only ceiling is the plan's own data allowance or its 5GB/day unlimited cap.
• Nomad: Same story: hotspot data simply counts against the plan, with no separate tethering limit.
• Wise: Wise's help centre says you can share your eSIM data through a mobile hotspot. Every Wise plan is fixed-data, so there's no unlimited-plan daily cap for a laptop to eat into. Gigs, which runs the network side, can still throttle or suspend "excessive" use, and publishes no number for it.
• Airalo: Tethering is permitted and counts against your plan, but on an unlimited plan the 3GB/day ceiling covers phone and laptop together.
• T-Travel: No separate tethering cap: the use policy allows hotspot for your own devices and "occasional" tethering that stays personal and non-commercial. On Unlimited, the 3GB/day full-speed allowance covers phone and laptop together — and a work laptop is exactly what the terms rule out.
• Holafly: A separate, much smaller tethering budget sitting inside an "unlimited" plan. The monthly global Holafly Plans subscription is the exception — it advertises unlimited hotspot.

Hitting the hotspot cap on day two of your "unlimited" plan...  via GIPHY

The phone number problem

This is the failure that actually ruins trips, and it's the one almost nobody writes about. Most travel eSIMs are data-only. No phone number, no SMS, no voice. That's fine for maps and WhatsApp — right up until your bank texts a one-time code to a number that no longer has service, and you're standing in a hotel lobby unable to approve a payment.

• Saily — Real US (+1) number, $0.99/month. Inbound and outbound calls and SMS, including 2FA codes. Inbound SMS is unlimited and free. Launched June 2026 — the only clean, cheap fix in the category.
• Holafly — Bundled on some unlimited plans. Since November 2025, USA, UK and Canada unlimited plans include a number with inbound SMS and VoIP calling. Nothing on other destinations.
• Airalo — Select country plans only. A handful of country bundles include voice and SMS — some Thailand and Mexico plans, for instance. Most of the catalogue is data-only.
• Nomad — Data-only. No number, no SMS, no voice on any plan. If SMS 2FA matters to you, Nomad has to be paired with a dual-SIM setup.
• T-Travel — Data-only. Its FAQ says it "provides mobile data rather than a traditional voice or SMS service". The Telekom name changes nothing here: your home SIM keeps receiving calls and SMS alongside it, so the dual-SIM fix below applies unchanged.
• Wise — Data-only. No number and no SMS. Wise's help centre says your regular SIM keeps handling calls and texts, which is the dual-SIM fix below — it just isn't optional here.

The free fix: dual-SIM, done properly

If your phone supports two lines at once — iPhones from the XS (2018) onward, and most Android flagships — you don't have to buy anything. Run your home SIM and the travel eSIM together, with each doing the job it's good at. Four steps, and the third one is the one that saves you money.

1. 1

   Keep your home SIM active

   Don't remove it and don't suspend the line. It's the thing that receives your bank's SMS codes and your own number's calls.

2. 2

   Set the travel eSIM as your data line

   On iOS: Settings → Cellular → Cellular Data → pick the eSIM. On Android it's usually Settings → Network & internet → SIMs → Mobile data. All of your browsing then rides the cheap plan.

3. 3

   Turn data roaming OFF on the home SIM

   This is the step people skip, and it's the one that generates horror-story bills. Voice and SMS still work; only data is blocked. Do it before you land.

4. 4

   Turn data roaming ON for the travel eSIM

   Counterintuitive but required — a travel eSIM is technically roaming, so it needs the setting enabled to connect at all.

Losing SMS is only half the story, too. Plenty of apps stop working the moment your IP address moves abroad, regardless of which eSIM you're on — we catalogued 73 apps that break when US travellers leave home, and a travel eSIM will not fix a single one of them.

Pricing — anchors, not a table to trust

Here's the awkward truth about every eSIM price table on the internet, this one included: it starts decaying the day it's published. Providers reprice constantly, run region-specific promotions, and layer discount codes on top. When we checked in August 2026, several of the highest-ranking comparison articles were still quoting Airalo's Japan unlimited price from before its early-2026 increase.

So treat what follows as a sense of scale — enough to know whether you're looking at $4 or $40 — and nothing more.

Rules of thumb that outlive the numbers

The relative positions move far more slowly than the absolute prices. These have held steady through several rounds of repricing:

Carrier eSIM or app eSIM? T-Travel against the four apps

On 21 September 2026 Deutsche Telekom's group launched T-Travel, a travel eSIM for 200+ destinations that anyone with an unlocked, eSIM-capable phone can buy — you don't need to be a Telekom customer — with prices published per destination, the same way the apps sell.

The instinct is that a carrier's eSIM must connect better than an app's. The terms don't back that up. A carrier logo isn't a feature; what matters is the same list as for everyone else — the daily cap, the hotspot rule, whether you get a number — and the price. T-Travel is not an affiliate of ours, so it's judged on those alone.

What the carrier name does and doesn't get you

Checked against T-Travel's own FAQ, Terms of Use and Acceptable Use Policy on 29–30 September 2026.

• No named network. T-Travel says it "automatically selects available networks" that "satisfy the T standards", and publishes no local partner for any destination. Nomad, by contrast, names its networks on the plan page — T-Mobile, AT&T and Verizon in the US, KDDI au and SoftBank in Japan. Here the carrier brand tells you less about where you'll land than Nomad does.
• Data-only, exactly like the apps. Its FAQ says it "provides mobile data rather than a traditional voice or SMS service". No number, so the SMS problem applies in full.
• "Unlimited" means 3GB a day at full speed, then 1Mbps — the same ceiling as Airalo, lower than Saily's 5GB. Details in the unlimited section.
• Hotspot is allowed for your own devices. The use policy permits "occasional" tethering as long as it stays personal and non-commercial, and sets no separate tethering cap.
• Only for use abroad. The terms sell it for use "while travelling outside" your normal country of residence. It isn't a replacement for your home SIM.
• The "money-back guarantee" stops at activation. The site advertises one, but the Terms (§5.3–5.4) say your right to withdraw ends once the service is activated. Treat it as a refund for an eSIM you haven't used yet.

Two worked comparisons: 10 days in the USA and in Japan

Ten days in the USA and ten days in Japan, all six providers, matched as closely as their plan shapes allow: an unlimited plan, a plan around 10–13GB, and one around 20–26GB. T-Travel and Wise sell a plan for exactly the days you pick; Airalo, Saily and Nomad sell fixed-data plans in 15 or 30-day blocks, so a 10-day trip means buying the next block up — their plans run longer for the money. Wise's custom plans stopped at 20GB in our tests, so its top-tier figure is a 20GB plan, not 25GB.

What the numbers say

• USA, with the launch offer: T-Travel wins every tier, by a lot. Ten days of Unlimited for about $17.77 against $32–36.50 from the apps, and 13.25GB for about $9. If your trip fits in ten days and the offer is still live, nothing else here comes close.
• At regular prices, its Standard and Max tiers are the cheapest per GB of the plans compared here, in both countries. Standard (13.25GB) works out to about $1.38/GB in the USA and $1.23/GB in Japan, against $1.50–2.30/GB for the apps' 10GB plans. Two catches: validity is ten days, where those rival plans last 15 or 30, and Nomad's 50GB plans go lower per GB still (50GB for 30 days was $30 on sale in the USA, $35 in Japan). In Japan the lead is half a euro-cent per GB: Wise's 20GB plan works out to about €0.98/GB too.
• Its Unlimited plan is where it loses. At regular prices it's the second most expensive 10-day unlimited in the USA (~$35.60) and the most expensive in Japan (~$38.66) — for a 3GB daily ceiling, when Saily charges less for 5GB.
• Outside the offer, Nomad still wins on total cost for a moderate data need. Its 10GB plan was the cheapest mid-size plan in both countries on the day — in Japan only by 35 cents, and thanks to a sale — and it lasts 30 days. Its 20GB sale prices undercut T-Travel's Max tier on price, if not per GB.
• Wise is competitive in Japan and dear in the USA. In Japan its 20GB plan (€19.64, about $21.95) was the lowest total for around 20GB, about a dollar under Nomad's sale price. In the USA its 13GB plan cost more than any rival's 10GB plan, and its 20GB plan more than Nomad's sale price or T-Travel's 25.75GB tier, though less than Airalo's or Saily's. It was read a week after the others and converted at a slightly different rate, so margins this thin can flip by the time you buy.

Wise eSIM: real prices from inside the app, and the terms behind them

Wise, the money-transfer company, now sells travel eSIMs inside its app to Personal and Business customers, paid from your Wise balance. You need a Wise account to buy one. Its eSIM terms were first published on 4 September 2026.

Wise doesn't publish its eSIM prices anywhere you can see without logging in, so comparison tables leave them out. We read them on 8 October 2026 from a Wise account registered in Lithuania. Wise isn't an affiliate of ours; it's judged on the numbers and the terms alone.

What Wise does differently

Checked against Wise's eSIM Terms and Conditions (v1.0, last updated 4 September 2026) and its help centre on 8 October 2026.

• It names the local networks. The Wise app lists AT&T, T-Mobile and Verizon — all three major US carriers — for the USA, and NTT Docomo and SoftBank for Japan, on 4G, LTE and 5G. That's the question T-Travel leaves unanswered.
• You can buy exactly the days you need. Besides pre-set 3, 7, 15 and 30-day plans, a custom builder prices any length — 10 days, not the next block up. The gain is fit rather than price: 4GB for 10 days in the USA (€9.48) is a plan the pre-set range doesn't have, but a custom 20GB for 10 days was only €0.26–0.31 cheaper than the pre-set 20GB for 15 days.
• An unusually long window to cancel. You get a full refund in the app as long as you haven't used any data and the activation deadline hasn't passed (§5.2–5.5) — Wise's help centre puts that deadline at 12 months from purchase. Holafly's refund window is six months, and T-Travel's right to withdraw ends at activation. Once you've used any data, there's no refund, only a case-by-case goodwill refund if a network fault "materially prevents" you using the plan for a substantial part of it. Keep the eSIM installed until Wise finishes reviewing a refund.
• No business-use ban. Wise sells to Business accounts as well as Personal ones, and its terms don't rule out work use — the opposite of T-Travel. What counts as acceptable use is set by Gigs: no reselling, fraud, abuse or disrupting the network.
• Data-only, with hotspot allowed. No number and no SMS — your regular SIM keeps calls and texts, so the dual-SIM setup is the way to keep your bank's codes coming. The help centre says you can share data through a hotspot.
• No unlimited plan. Every plan is a fixed amount of data, and the largest custom plan we could build was 20GB. For more, the global plans run to 100GB over a year.

The small print

• One eSIM per person, on one device at a time (§2.c). You can hold several plans on it. A Business account gets one per authorised user.
• Overlapping plans are used soonest-expiring first (§3.2), and whatever data is left when a plan's validity ends is lost (§3.1).
• Moving country can freeze purchases (§2.4). Move to a country the service doesn't support and you can't buy new plans; move to a country with a different home currency and new purchases pause until your existing plans end.
• Two companies hold your data (§7). Wise and Gigs are each separately responsible for the personal data they process, so two privacy policies apply, not one.

Device compatibility and activation gotchas

This is where the money actually gets wasted. Refunds on an eSIM bought for an incompatible phone are notoriously hard to get across the whole category, so the five minutes you spend checking before you pay are the highest-value five minutes on this page.

The KYC advantage nobody mentions

Here's a genuine argument for travel eSIMs that almost never appears in comparisons, probably because it's a legal detail rather than a feature anyone can put on a pricing page: in a lot of countries, buying a local SIM means handing over your passport.

It doesn't reverse that advice for long stays — three weeks of heavy data on a local plan will still cost less than any eSIM — but it does change the calculation for a one or two-week trip to a country where getting a SIM means an hour of paperwork you'd rather spend elsewhere.

Which one, for which traveller

No hedging. Find your row.