In short: in the Airalo vs Saily comparison, neither wins across the board. Airalo has more countries in its catalog and very granular plans; Saily stands out with a more refined app and NordVPN's privacy extras. The price is practically tied, so compare the total amount for your exact number of days and decide based on the destination, not the name.
If you're deciding between Airalo and Saily for your next trip, this head-to-head will save you half an hour of open tabs. We compare real price per gig, coverage, app, activation, and support, and tell you when each is convenient and when to consider a third option before paying. Spoiler: there's no absolute winner; it depends on your destination.
Airalo vs Saily in one sentence
Airalo is the most established eSIM with the most countries in its catalog; Saily is NordVPN's offering, newer, with a polished app and a focus on security. Airalo usually wins in variety of exotic destinations; Saily, in app experience and regional plans. Both are low-cost, prepaid, with no long-term commitment.
The practical difference isn't in the logo, but in which country you visit and how much you value the app versus the raw price. Airalo has been on the market since 2019 and boasts coverage in over 200 destinations, while Saily arrived in 2024, leveraging Nord Security's infrastructure and brand. If you're traveling to an unusual country, Airalo's extensive catalog tends to have a plan; if you're going to Europe or the US and want a clean interface with privacy extras, Saily plays that card very well. Neither ties you down: you pay for the plan, you use it, and that's it.
Prices and plans head-to-head
In terms of price, both are in the same low-cost league, but the breakdown changes depending on the gigabytes and days. Airalo has a lot of granularity (1 GB, 3 GB, 5 GB, 10 GB plans, and unlimited data plans in some countries), while Saily usually packages slightly more generous tiers with volume discounts. The key isn't the big number on the cover, but the real price per gigabyte in YOUR destination and for YOUR days.
| Criterion | Airalo | Saily |
|---|---|---|
| Model | Prepaid, no long-term commitment | Prepaid, no long-term commitment |
| Typical smallest plan | 1 GB / 7 days | 1 GB / 7 days |
| Unlimited plans | In selected countries | In selected countries |
| Volume discount | Yes, on higher tiers | Yes, marked on longer plans |
| Recharge | From the app | From the app |
Traveler's tip: don't buy the cheapest plan by default. First, estimate how much data you need for your trip based on the days and map usage, then compare the total amount, not the isolated price per GB.
Trick: if you're torn between 3 GB and 5 GB for a week, go for the larger plan. Running out of data at the airport on the way back causes more stress than a euro's difference.
Coverage and network quality
Neither Airalo nor Saily has its own network: they resell local operators. This means that quality depends on the agreement with the operator in each country, not the eSIM brand. In large destinations (Spain, Italy, USA, Japan), both work reliably because they rely on main networks. The difference appears in niche countries or rural areas, where Airalo, due to its age and volume, tends to have more agreements in place.
Another point is latency and tethering (sharing data via hotspot). Some reseller eSIMs limit or penalize router use; it's worth checking the specific plan's details before buying if you plan to connect your laptop. For European trips, both rely on robust networks and the experience is very similar; if you're going to an exotic destination, verify on each website that the country appears with 4G/5G network and not just residual 3G. And remember: coverage on paper is not the same as real speed, which also depends on network congestion in the area.
App, activation, and experience
This is where Saily shines. Its app, inheriting NordVPN's design, is one of the cleanest in the industry: you buy, install, and see data usage at a glance. Airalo also has its own app and website, functional but with more screens and an extra step. Both allow eSIM installation via QR or directly from the app, and on compatible phones, the process takes around a couple of minutes.
If it's your first eSIM, the process is essentially identical: you scan a code or tap a button, the profile downloads, and you activate data upon arrival. Here's a general guide on how to install an eSIM, which applies to any provider. An extra from Saily: it includes privacy features (malicious website blocking), something Airalo doesn't offer by default. If you travel a lot and like to have everything organized in one interface, Saily's app wins for convenience.
Support and fine print
Support makes all the difference when something goes wrong 3,000 km from home. Airalo offers chat and a help center in several languages with a large community behind it; Saily relies on Nord Security's 24/7 chat support. In both cases, the primary channel is written (no phone), so response speed depends on the time and language.
The fine print to check for both: plan expiry (data expires even if you don't use it), top-up policy, whether the plan allows tethering, and what happens if you run out of data (it cuts off, no surprise overage charges, but no browsing either). Neither includes a phone number for traditional calls: they are data plans, designed for calling via WhatsApp or other apps. If you need to receive bank SMS on your Spanish number, you'll have to use dual SIM mode, keeping your usual SIM active for messages.
Myths and what almost no one tells you before buying
Before taking out your card, there are details that neither Airalo nor Saily highlight on their website and that make a real difference during your trip.
- "More gigabytes, the better" is a myth. Data you don't use expires with the plan, it doesn't accumulate. If you're going to Lisbon for 4 days, buying 10 GB "just in case" only makes you pay more: calculate carefully and, if necessary, keep the top-up option handy in the app in case you run short on the last day.
- The plan doesn't always start counting when you want it to. Some plans activate the expiry from the purchase, others from the first network connection. Check this fine print if you plan to install the eSIM a few days before flying (recommended, by the way: do it at home with Wi-Fi, never at the departure airport in a hurry).
- Not all phones support eSIM, even recent ones. iPhones older than XS are excluded, and some models sold outside Europe (certain Xiaomi or Huawei from Asian markets) have the eSIM blocked by default even if the hardware supports it. Check this before paying: if your phone is not compatible, neither Airalo nor Saily will work for you.
- A regional plan is not always more cost-effective than a country-specific one. If your trip is to a single destination, compare: sometimes the specific plan for that country has a better price per gigabyte than the regional one that covers half a continent you won't even visit. You can find details in our comparison of regional eSIM vs country-specific eSIM.
- When NOT to buy either: if your Spanish operator already includes free roaming in the European Union (common in most current tariffs) and your trip is to France, Italy, or Portugal for a weekend, don't spend money on an additional eSIM. Reserve it for outside the EU, where your operator's roaming charges skyrocket or simply don't exist; we explain this in detail in eSIM vs roaming.
If you're still debating between sticking with your old physical SIM or making the switch to eSIMs in general (beyond Airalo or Saily), we have an honest comparison of eSIM vs local SIM. And a practical detail that's always forgotten: save a screenshot of the installation QR (or the activation link) before leaving home. If the hotel doesn't have Wi-Fi when you arrive and your physical Spanish SIM no longer has data, you'll be unable to complete the installation.
Which to choose based on your trip
Summary for a quick decision, without overthinking it:
- Going to an unusual destination (Africa, Central Asia, islands): Airalo, due to a broader catalog.
- Traveling to Europe or the US and value the app: Saily, for experience and privacy extras.
- Looking for the best total price: compare the final amount for both for your exact days; sometimes you save €2-3, other times not.
- Want Spanish support and clear plans: this is where local alternatives come in.
Before concluding, it's worth considering a third option with Spanish support that sometimes offers better prices per gig than the two international giants.
Practical tip: in Europe, many travelers end up paying less per gigabyte with providers specialized in the region than with a global Airalo or Saily plan. It's worth comparing all three.
If you prefer to skip the comparison and just get data right away, PuraSIM has plans tailored by destination: eSIM Europe for multi-country itineraries, eSIM United States if you're crossing the Atlantic, or eSIM Spain if you need backup coverage within the country. All three with Spanish support, which is precisely what's most lacking with Airalo and Saily when something doesn't go as expected.
Frequently asked questions
Is Airalo or Saily better?
It depends on the destination. Airalo wins in variety of countries and exotic plans due to its longevity; Saily wins in app, convenience, and privacy extras for trips to Europe or the US. In terms of price, they are very similar: compare the total amount for your specific days before deciding.
Do Airalo and Saily include calls?
Not by default. Both are data eSIMs: you browse, use maps, and make calls via WhatsApp, FaceTime, or Telegram. If you need a number for traditional calls or SMS, you'll have to keep your usual SIM in dual mode or look for a specific plan with voice, which is a minority in the eSIM market.
Is Saily from NordVPN?
Yes, Saily is the eSIM from Nord Security, the company behind NordVPN. That's why its app inherits the design and adds privacy features like malicious website blocking. Support also relies on Nord's 24/7 structure.
Can I use Airalo or Saily in multiple countries?
Yes. Both offer regional plans (Europe, Asia, America) and global plans, in addition to country-specific plans. If your trip involves several countries, a regional plan is usually more cost-effective than buying an eSIM for each destination. Check the list of covered countries before buying.
What happens if I run out of data?
With both, when you run out of gigabytes, you simply stop browsing; there are no surprise charges like with classic roaming. To stay connected, you need to purchase a top-up from the app. That's why it's advisable to choose a plan with some margin so you don't run out halfway through your trip.
Do I need Wi-Fi to install the Airalo or Saily eSIM?
Yes, to install it you need an internet connection, even if only for a few seconds to download the profile. That's why it's best to install it at home before leaving, using your usual Wi-Fi, and have it ready to activate when you land. Trying to install it at the destination airport without available Wi-Fi is the fastest way to lose the first hour of your trip staring at your phone.
Can I have Airalo and Saily active at the same time on the same phone?
It depends on the phone. Recent iPhones allow several eSIMs to be installed, although only one can be active for mobile data at a time (plus your physical line, if you keep it). On Android, it varies by manufacturer: some models only allow one active eSIM even if they have physical space for more. If you're traveling with two eSIMs in case one fails, check beforehand that your model allows it.
Frequently asked questions about Airalo and Saily: practical doubts
How long do I have before the plan expires if I don't activate it?
For both, an unactivated plan usually remains available for quite some time before expiring, although the exact period varies depending on the country and the operator backing it, so it's worth checking the plan details before purchasing. The countdown of contracted days begins when you activate the eSIM (usually upon first connecting to the destination's network), not when you buy it. This means you can install it in advance without fear of "losing it" if your trip is delayed.
Can I get a refund for an Airalo or Saily plan I haven't used?
Both allow refunds for plans that have never been activated, usually managed through the app's support center. Once the plan is activated and data consumed, a refund is usually not possible as the service is considered rendered. Review the specific return policy before purchasing if your travel dates are not yet finalized.
Can I share Airalo or Saily data with my laptop via tethering?
In most countries and plans, using the eSIM as a Wi-Fi hotspot is allowed, but some specific plans or destinations restrict or limit it. If you need to connect your laptop during your trip, don't assume it's possible: check the plan details to see if tethering is permitted before purchasing. When in doubt, it's safer to confirm with support than to find out halfway through your trip.
Do I need an international card to pay for Airalo or Saily?
No, both accept common debit and credit cards (Visa, Mastercard) without them needing to be specifically international, and they also accept digital wallets like Google Pay or Apple Pay depending on the device. Payment is processed at the time of purchase, in the currency used by the app. No special banking arrangements are needed before traveling.
Can I continue to use WhatsApp with my Spanish number while the eSIM is active?
Yes, without any problem. WhatsApp, Telegram, or any messaging app works with the internet connection provided by the eSIM, regardless of which number is associated with your account. This is precisely the most common use: keeping your usual number for messaging and using Airalo or Saily only for data at your destination.
Is an eSIM like Airalo or Saily slower or does it consume more battery than a physical SIM?
There is no relevant technical difference: an eSIM functions identically to a physical one at the radio level, so speed depends on the local operator's network in each destination, not the chip type. If you notice your phone is slower in a specific country, it's usually due to coverage in that area. Having two active lines at once (your physical SIM plus the eSIM) may have a slightly greater impact on battery life, similar to any dual SIM setup.
Conclusion
Airalo and Saily are two reliable low-cost options: Airalo excels in rare destinations and catalog variety, Saily in app and convenience, and in price, they are usually tied. The honest recommendation is to compare the total amount for your exact days and not commit to one brand. Before paying, also look at alternatives with Spanish support and choose the eSIM that best suits your destination and travel style.
