Airalo vs co:sim: Which eSIM Is Actually Cheaper for Your Trip?

Airalo and co:sim solve the same problem with different pricing shapes, so "which is cheaper" depends on your trip length and how much data you'll actually use, not the brand. Airalo increasingly sells unlimited-per-day plans priced by validity length (confirmed on its Italy and Japan pages), while co:sim sells fixed-data-only eSIMs per destination with the price shown on each plan page. This guide walks through how to actually compare the two for your specific trip, using each provider's own current pricing, rather than repeating a single number that's already out of date by the time you read it.

#How do Airalo and co:sim actually price a plan?

Airalo is a marketplace: it lists many separate SKUs per country and region, and its pricing has shifted heavily toward unlimited-per-day tiers rather than fixed gigabyte buckets. On Airalo's own Italy eSIM page, all six listed tiers are "unlimited" data, priced by validity length: $11.00 for 3 days up to $64.00 for 30 days (airalo.com/italy-esim). Airalo still sells separate fixed-GB bundles for some regions too, like a 100 GB, 180-day Eurolink pack, so the model varies by which specific product you land on.

co:sim takes a simpler shape: each data-only eSIM plan is priced for a fixed data amount (or a daily allowance) and a set validity period, shown directly on that destination's plan page along with the underlying network, the install deadline and whether the plan bills from purchase or from first connection. There's no "unlimited" tier to weigh against a capped one; the trade-off is choosing the right data amount for the trip instead.

#Does "unlimited" always beat a fixed-data plan on price?

Not automatically. An unlimited-per-day plan has a fixed cost regardless of how much data you use, so it's a good deal if you'll genuinely use a lot: streaming, video calls, tethering a laptop. But if your real usage is closer to maps, messaging and social apps, which typically adds up to well under 1 GB a day, a fixed-data plan sized to that actual use can cost less than paying for headroom you'll never touch. The only way to know which wins for a specific trip is to estimate realistic daily usage first, then compare that against both a fixed-data option's per-GB cost and an unlimited option's per-day cost.

Airalo's own Italy pricing gives a concrete anchor: $11.00 covers 3 days of unlimited data, or roughly $3.67/day. A fixed-data plan sized around 1-2 GB/day for the same trip is worth pricing out on co:sim's Italy eSIM plans before assuming the unlimited option is automatically the better deal, since a light user pays for capacity a heavy user actually needs.

#What else changes the real cost of a trip's data?

Price-per-day isn't the whole comparison. Three things move the real cost after checkout:

• Refund terms if plans change. Airalo's right of withdrawal expires 14 days after purchase, or the moment the eSIM is activated, whichever comes first (airalo.com/legal/terms-of-use). co:sim's refund window is 30 days from purchase, capped by the plan's own install deadline, and only applies while the eSIM is still uninstalled (cosim.io/en/policies/refund). A cheaper headline price is worth less if a trip gets cancelled and the window to get money back has already closed.
• Top-ups if you run out. Both providers support adding data mid-trip on eligible plans, but the top-up price is a separate purchase, not covered by the original plan's headline figure.
• Currency display. Airalo's storefront price can display in different currencies depending on region, which changes the number you see without changing the underlying plan, so compare figures in the same currency before concluding one is cheaper.

#FAQ

#Is Airalo cheaper than co:sim for a one-week trip?

It depends on the country and how much data you'll actually use. Airalo's Italy eSIM prices 7 days of unlimited data at $23.00, which is a fixed cost no matter how heavily you use it during that week (airalo.com/italy-esim). co:sim prices each destination's plans by fixed data amount rather than unlimited-per-day, so a light user who only needs a few gigabytes for a week of maps and messaging may find a smaller, cheaper plan on co:sim's own destination page, while a heavy streamer or hotspot user may come out ahead on Airalo's unlimited model. Neither answer holds for every country or every travel style, so the only reliable comparison is pricing out your specific destination and estimated data use on both providers' current pages before you book.

#Does Airalo or co:sim have a better refund policy?

They protect different things, so "better" depends on how you plan to buy. Airalo gives a 14-day right of withdrawal that ends immediately once the eSIM is activated, whichever comes first, so a plan you've already started using is not refundable through that route even if you're still inside the 14 days (airalo.com/legal/terms-of-use). co:sim's refund window runs 30 days from purchase, which is longer on paper, but it's also install-based: the eSIM has to still be uninstalled, and the window is capped by that specific plan's own install deadline whenever that deadline falls sooner than 30 days (cosim.io/en/policies/refund). In practice, both policies reward buying and installing close to your actual travel date rather than weeks in advance, since either window can close before a delayed or cancelled trip even gets underway, no matter which app sold the plan.

#Why does Airalo show different prices for the same country?

Airalo prices vary by which specific plan tier you land on (unlimited-per-day vs. a fixed-GB bundle, if both exist for that country), by validity length, and by the currency your browser or account defaults to. The same Italy eSIM listing showed $11.00-$64.00 across its six unlimited-per-day tiers alone, before counting any separate fixed-GB option (airalo.com/italy-esim). This isn't unique to Airalo: any marketplace-style eSIM seller with many SKUs per country will show a range rather than one price, which is exactly why comparing "an eSIM app" to another only makes sense at the level of one specific plan for one specific trip.

Airalo and co:sim aren't really competing on a single number: they're built around different pricing shapes, unlimited-per-day marketplace listings versus fixed-data destination plans, and which is cheaper flips depending on your trip. Price out your actual destination and realistic data need on both providers' current pages before deciding, rather than trusting either brand's headline number on its own.