The spread is wide and consistent across destinations. Across the 200+ countries we track, roaming runs five to ten 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.
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.)
- Cheapest in almost every country: $5 to $15 for a typical 1-2 week trip
- 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
- 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 (1+ month) 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.
- 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
- 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 an unlimited daily-pass model ($10/day on Verizon TravelPass, $12/day on AT&T International Day Pass) or a multi-day bundle (T-Mobile International Pass: $35 for 5 GB over 10 days). You pay the carrier, your phone just works on landing, no setup required.
- 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)
- Roughly 10x the cost of a travel eSIM for the same data window
- Daily-pass rates ($10-12/day) add up quickly: $70 for a week, $140 for two
- 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's free-roaming Magenta plans throttle to 256 Kbps in many countries
Cost by trip length
Same destination (Japan), three options, four trip lengths. Real prices May 2026.
Two observations from the table. First, eSIM wins on cost at every length except the 60-day stay, where it sits within a few dollars of a local SIM. 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.
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.
Questions readers ask before deciding
Pulled from search queries that land on this page. Answers written so they read cleanly on their own.