The spread is wide and consistent across destinations. Across the 200+ countries we track, roaming often runs five to fifteen times what a comparable travel eSIM costs for the same data window. The local physical SIM sits between them: cheaper than roaming, slightly more friction than an eSIM, sometimes cheaper than the eSIM for very long stays. Want the math for your specific trip? Run our cost calculator.

Each option has cases where it actually wins. Sections below cover each in turn.

The short answer, by trip type

Five common patterns and what we would pick.

Two to fourteen days, one country
Travel eSIM
Usually the cheapest option; install at home, online on landing.
Two to four weeks, multiple countries
Travel eSIM (regional plan)
One plan covers 20-40 countries. No border-crossing friction.
Under 48 hours
Carrier roaming
One or two $12 day passes cost little, and the friction of an eSIM is not worth it for one day.
Long stay (2+ months), one country
Local physical SIM
Per-gigabyte price can beat the travel eSIM for long stays. Pick up at a downtown carrier shop.
You need a local phone number for calls or SMS
Local physical SIM
Travel eSIMs are data-only; they do not give you a local number. A local SIM does.

Travel eSIM

The default for most trips. Cheapest of the three, lowest friction, requires an eSIM-capable phone.

You buy a data plan online from a provider (Saily, Nomad, Roamless, GigSky, and a dozen others). They email you a QR code. You scan it on your phone before you fly, which downloads a small encrypted profile to your phone's eSIM chip. When you land, you toggle the line on, restart, and you are online. (Full install walkthrough here.)

What it is good at
  • Usually the cheapest option: each destination page lists current plans from the weekly feeds
  • Install at home on Wi-Fi, online the moment you land
  • Keep your home number alive on the other line for SMS and 2FA codes
  • Regional plans cover multi-country trips (Europe, Asia, Latin America) with no border friction
  • Multiple plans installed at once, switch between them in software
  • No bill shock, fully prepaid, transparent pricing
Where it falls short
  • Phone must be eSIM-compatible and unlocked (see compatibility guide)
  • Data-only on most plans: no local phone number for cellular calls
  • Single-use QR codes; if install fails, you may need a replacement code
  • Long stays (2+ months) can be cheaper on a local SIM
  • Some budget Android phones do not support eSIM at all

Local physical SIM

The right choice for long stays, for travelers who need a local number, and in countries where prepaid SIMs are particularly cheap.

You buy a prepaid SIM card at the destination, either at the airport on arrival or at a carrier shop downtown. You swap it into your phone, register with your passport (required in most countries), and you are online.

What it is good at
  • Can be cheapest for long stays (1+ month) in countries with cheap prepaid markets (Vietnam, Thailand, India, much of Eastern Europe)
  • You get a real local phone number for calls and SMS
  • Works on any phone with a SIM slot, no eSIM hardware required
  • Downtown carrier shops often have better pricing than airport kiosks
  • Tangible artifact: you can swap it into another phone in seconds
Where it falls short
  • You arrive offline. Setup happens after you land, not before
  • Passport registration is required in most countries, including most of Europe
  • Airport kiosk pricing is marked up vs downtown carrier shops
  • Each new country means a new SIM, new registration, new everything
  • Most carriers do not provide English-language support
  • Your home number goes offline unless your phone has dual SIM

Carrier roaming (daily pass)

Convenient, expensive. Almost never the right call for trips longer than 48 hours.

Your home carrier extends your existing plan to work abroad, usually as a daily pass ($12/day on Verizon TravelPass, with 5 GB at high speed per session; $12/day on AT&T International Day Pass, at most 10 charges per bill) or a multi-day pass (T-Mobile International Pass: $50 for 15 GB over 10 days). Prices from the carriers' sites, checked October 21, 2026. You pay the carrier, your phone just works on landing, no setup required.

What it is good at
  • Zero setup: phone connects automatically on arrival
  • Your home number stays fully active for calls and SMS
  • Customer support is your home carrier (you already know how to reach them)
  • No eSIM hardware needed, no unlocked phone needed
  • Cost-effective for very short trips (under 48 hours)
Where it falls short
  • Roughly 10x the cost of a travel eSIM for the same data window
  • Daily passes ($12/day) add up quickly: $84 for a week, $168 for two on TravelPass
  • Easy to accidentally trigger by leaving roaming on for too long
  • Some plans have data caps after which speeds throttle to near-unusable
  • T-Mobile plans with data abroad slow to 256 Kbps after their high-speed allowance

Cost by trip length

Same destination (Japan), three options, five trip lengths. eSIM prices from the weekly provider feeds, roaming from Verizon's TravelPass page; local SIM prices are typical estimates.

Trip length
eSIM
Local SIM
Roaming
2 days
$4.99
~$25
$24
7 days
$12.99
~$25
$84
14 days
$12.99
~$30
$168
30 days
$24.99
~$35
$360
60 days
$49.98
~$45
$720
1 GB a day of use. eSIM: the cheapest Japan plan from the weekly feeds (read Oct 20, 2026), bought as many times as the trip needs. Local SIM: typical airport-counter estimate. Roaming: Verizon TravelPass at $12/day.

Two observations from the table. First, the travel eSIM is the cheapest of the three at 2, 7, 14 and 30 days. Second, the gap between roaming and the two alternatives grows linearly with trip length; the longer the trip, the worse roaming gets.

The hybrid setup most experienced travelers use

You can use more than one option at once. Most experienced travelers do.

The combination that actually works for most international trips:

  • Home line stays on, as a physical SIM or eSIM, with data roaming OFF. Receives SMS and calls on your real number. Banking 2FA codes still arrive.
  • Travel eSIM as the data line. Cheap, fast, installed before you fly. Handles maps, messaging, browsing.
  • (Long stays only) Replace the travel eSIM with a local prepaid SIM after the first week, once you have settled in and can visit a carrier shop.

This setup keeps your home number fully alive, gives you cheap data abroad, and provides a clean upgrade path for long stays. It also means you arrive online, which matters more than people think the first time they try it.

Need help picking a plan?

Tell us your trip. We will surface the right eSIM plan from the providers we track, or tell you when roaming or a local SIM is the better call.

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Questions readers ask before deciding

Pulled from search queries that land on this page. Answers written so they read cleanly on their own.

Is a travel eSIM always cheaper than a local physical SIM?

Usually, but not always. For trips under two weeks in most countries, a travel eSIM is competitive or cheaper than the local SIM and avoids the airport-kiosk friction. For long stays (two months or more) or in countries where prepaid local SIMs are very cheap (Vietnam, Thailand, India, parts of Eastern Europe), the local SIM can win on per-gigabyte price. The convenience tradeoff still matters: a local SIM means a passport visit to a shop on arrival.

Can I use an eSIM and a physical SIM at the same time?

Yes. Modern phones (iPhone XS and newer, Pixel 3 and newer, Galaxy S20 and newer) support dual SIM with one physical SIM plus one eSIM active. iPhone 13 and newer (and the iPhone SE 3rd gen) can also run two eSIMs at once, and eSIM-only iPhones (iPhone Air, iPhone Duo, and models bought where Apple sells them without a SIM tray, such as US iPhone 14 and newer) store eight or more eSIMs with two active. The standard travel setup: home line on the physical SIM (or as an eSIM), travel eSIM for data.

Do eSIMs work everywhere physical SIMs work?

Almost. Coverage on a travel eSIM piggybacks on a local carrier's network in the destination country. In most major countries, the eSIM provider has a partnership with one or two of the major carriers, so practical coverage is the same as if you bought their SIM card. The exceptions are rural areas where only the smallest national carrier has signal, and the eSIM provider does not partner with that one. Carrier coverage maps for each provider are usually published on the provider's site.

Can I keep my home phone number while using a travel eSIM or local SIM?

Travel eSIM: yes. Your home line stays in its physical slot or as a dormant eSIM; the travel eSIM handles data only. Local physical SIM: usually no, unless your phone has both a physical SIM slot and an eSIM (most newer phones do). With an eSIM-only iPhone (iPhone Air, iPhone Duo, or a US iPhone 14 or newer) you can keep your home number as an eSIM and add the travel eSIM as a second profile.

What about carrier roaming with a daily-pass plan?

Convenient, almost always more expensive. Verizon TravelPass and AT&T's International Day Pass cost $12 per day (AT&T stops at 10 charges per bill). Two weeks of TravelPass cost $168, versus $12.99 for enough travel-eSIM data in Japan (GoMoWorld 14 GB / 30 days). The exception is trips under 48 hours where the per-day cost stays manageable and the friction of switching SIMs is not worth the savings.

Is buying a local SIM at the airport a bad idea?

Not bad, just less convenient. Airport SIM kiosks markup prices over what you would pay at a downtown carrier shop, sometimes significantly. You also need your passport (registration requirement in most countries), 15 to 45 minutes of queue time, and the staff usually speaks limited English. For a single-country trip in a country where you speak the language, a downtown SIM can be the cheapest and easiest option. For airport convenience without the markup, a travel eSIM beats both.

Do I need a special phone for eSIM but not for a physical SIM?

Yes. eSIM requires a phone with eSIM hardware (iPhone XR and newer, Pixel 3 and newer, Galaxy S20 and newer). A physical SIM works on any phone that has a SIM slot, which is almost every phone except eSIM-only iPhones: iPhone Air and iPhone Duo everywhere, US iPhone 14 and newer, and iPhone 17, 17e and 18 Pro models bought in Canada, Mexico, Japan and a few other countries. If your phone is older than 2018 or is a budget Android, the physical local SIM is probably your only realistic option.

Will my travel eSIM provider have decent customer support?

Varies by provider. The major travel eSIM providers (Saily, Nomad, Roamless, GigSky) all have in-app support chat with human responses inside one business day for most issues. Local physical SIM support is often non-existent once you leave the shop; you go back in person if something is wrong. Carrier roaming has the best support (it is your home carrier) but you pay for it in the plan price.

Can I take an eSIM out of my phone and put it in another phone?

Not easily. eSIM profiles are bound to the device they install on. eSIM Quick Transfer moves a line between iPhones (Apple's current steps need iOS 18.4 or later on both phones), but carrier eSIMs transfer most reliably; third-party travel eSIMs sometimes do not transfer and you need to ask the provider for a replacement QR code. Physical SIMs are trivially portable: pop it out, put it in a different phone, done.

What is the best option for a multi-country trip?

Travel eSIM, almost always. Regional plans (a single eSIM covering 30+ European countries, or 20+ Asian countries) handle border crossings automatically. With a local physical SIM you would need a new SIM in each country, with new paperwork. With roaming, you would pay daily-pass rates per country, which compounds quickly across borders. The eSIM regional plan is roughly the same price as a single-country plan and removes all the friction.