🛄 Buying Guide 2026

Airport SIM vs Travel eSIM — What the Counter Actually Costs You

Updated August 2026 · Written by a company that sells one of the two, and says where the other wins

Every arrivals hall has a counter selling tourist SIMs, and for decades that was the sensible thing to do. It still is, for some trips. Here is an honest account of what each option costs in money, time and hassle — including the four situations where we would tell you to walk to the counter instead of buying from us.

The three costs of an airport SIM

1. The queue, at the worst possible moment

Airport SIM counters are busiest exactly when you are least patient: after a long-haul arrival, with luggage, often after immigration. At major hubs three wide-body arrivals landing together turns a five-minute transaction into forty. You are also making a purchase decision while tired, in a currency you have not used yet, from the only seller in the room.

2. Your passport, and often a registration

A large number of countries legally require identity registration for every prepaid SIM — Germany, Malaysia, Singapore, the Philippines, Thailand, Morocco, Indonesia and many more. That means handing over your passport at a counter, sometimes a photograph, and occasionally an online verification step that can fail and need repeating. It is not dangerous; it is friction, and it is friction at the point of maximum tiredness.

3. Your own number, switched off

This is the cost people underestimate. Putting a local SIM in your only SIM slot means your home number stops receiving anything — including bank one-time codes, which is how you will authorise the card payment for the hotel. Dual-SIM phones avoid this; single-slot phones do not, and the plastic SIM you removed is now a small object you must not lose for two weeks.

The two costs of a travel eSIM

We are not going to pretend it is free of drawbacks.

1. Your phone has to support it, and be unlocked

No eSIM hardware, no eSIM — and carrier-locked phones can install a profile and then refuse to use it. A plastic SIM works in essentially any phone made in the last twenty years. Our compatibility guide covers which devices qualify and the regional traps.

2. You get no local number

Travel eSIMs are data-only. For most trips that is irrelevant, because messaging apps carry your identity. It becomes relevant when a local business needs to phone you — a delivery, a restaurant confirming a booking, a landlord — or when a local service demands a local number to register.

The money, roughly

On raw price the two are closer than eSIM marketing suggests. An airport SIM in Thailand, Turkey or Portugal can genuinely undercut us for a big data bundle. Where the eSIM wins consistently is the first hour of the trip and the second week of it — you are online in the taxi queue, and you never had to think about it again.

Four times we would tell you to buy at the counter

1. You are staying more than about a month in one country

Local prepaid deals in most countries are extremely cheap once you are past the registration. A roaming product cannot compete with a domestic one over that timescale — our long-stay guide works through where the crossover sits.

2. You need a local number

Delivery apps that verify by SMS, a landlord, a local bank, a doctor’s appointment. If a local number is on your list, no data-only eSIM solves it and you should stop trying to make one fit.

3. Your phone does not support eSIM

Dial *#06#. No EID, no eSIM. The counter is the answer, and there is no cleverness that changes that.

4. Coverage matters more than convenience

Where our plan rides one network and your route is genuinely remote — deep Lapland, the Irish west coast, the Australian outback — a local SIM lets you pick the operator that actually built masts on your route. We say this in those countries’ guides too.

And where the eSIM wins

Short trips. Under two weeks, the price gap is small and the time gap is enormous.
Multi-country routes. One profile that crosses borders beats registering in each country.
Layovers. Nobody is buying a SIM for a nine-hour stop in Singapore, but $3.90 of data makes the stop useful.
Anywhere registration is heavy. The Philippines, Malaysia and Germany all turn a SIM purchase into paperwork.
When you want your own number to keep working. Which, for most people carrying a bank card, is always.

Frequently asked

Is an airport SIM cheaper than an eSIM?

Sometimes, especially for large data bundles in cheap countries and for stays over a month. For short trips the price gap is small and the convenience gap is large.

Do I lose my phone number with an airport SIM?

On a single-SIM phone, effectively yes, while it is in. On a dual-SIM phone you can keep both. This matters most for bank one-time codes.

Which countries make buying a SIM difficult?

Anywhere with mandatory identity registration — Germany, Singapore, Malaysia, the Philippines, Thailand, Morocco, Indonesia and many others. It is legal and routine, but it is a queue and a passport.

Can I use both?

Yes, and plenty of long-stay travellers do: an eSIM for the arrival day and the first week, then a local SIM once they have found a shop and settled in.

What if my phone does not support eSIM?

Then the counter is your answer. Check with *#06# before you plan around anything else.

Is airport SIM data faster?

Not inherently — it is the same radio network. A local SIM can sometimes access a network our plan does not ride, which matters in remote areas and almost nowhere else.

Do eSIMs work as soon as I land?

Yes, if you installed the profile before flying. That is the whole advantage: you walk out of the aircraft already connected.

Which is better for a family?

Usually eSIMs, because tethering is included and nobody queues. Our family guide works through when to buy one plan versus several.

Buy the one that fits the trip

Two weeks or less, several countries, or a phone you want to keep your number on: buy the eSIM before you fly. A month in one place, or a trip where somebody local needs to ring you: walk to the counter. We would rather you got that right than bought from us and regretted it.

Over 200 destinations · Installed before you fly · From $3.90Find the eSIM for your destination →

Airport SIM prices and registration requirements vary widely by country and change; the figures here are typical ranges at the time of writing, not quotations. AeroSims prices checked August 2026 and subject to change. Identity-registration requirements named are those in force in the listed countries at the time of writing.