Best eSIM for Belgium: 7 Providers Compared (Real Prices)

Belgium doesn't get the same eSIM-shopping attention as Spain or Italy, but it probably should. As the seat of the EU institutions and NATO, with one of Europe's busiest airports acting as a transit hub for the whole continent, it sees a steady mix of business travelers, EU officials, and tourists heading to Brussels, Bruges, and Antwerp. I checked live pricing from seven well-known providers among the 122 we track for Belgium — real, current pricing, not a one-time snapshot.

Quick-Answer Picks

• Cheapest overall: Yesim, 500MB for a single day at $0.51.
• Best real unlimited value: AirSims, a genuine 30-day unlimited plan for $18.29 — normally the cheapest true unlimited month among the providers we checked for this destination.
• Best for a short trip (under a week): co:sim, with dozens of different plans and several sub-$1 single-day options.
• Best if you'd rather not compare fixed-data tiers: Maya Mobile — simple flat-rate unlimited plans at 3, 7, 14, or 30 days, no data-amount math required.

Belgium price comparison

Full comparison →

Yesim $0.51 Cheapest Ubigi $2.00 MobiMatter $3.49 Maya Mobile $9.99

Comparison by eSIMKart

Live Belgium deals right now

Public promo codes from providers selling Belgium eSIMs — pulled live from our deals list, so this section updates itself and disappears when nothing is running.

Airalo

15% off your first Airalo eSIM with NEWTOAIRALO15

-15%

New customers only, first order; the discount is capped at $3 per Airalo's terms.

Public promo Ends Dec 31, 2026

NEWTOAIRALO15 Get this deal

Eskimo

Welcome Discount — 50% off your first purchase

-50%

Get 50% off your first purchase, capped at $15. Applied automatically at checkout, no code needed.

Public promo

Get this deal

CloudOn

CLOUDON10 - 10% off your first eSIM

-10%

Public sitewide banner code, first purchase only.

Public promo

CLOUDON10 Get this deal

Provider-by-Provider Breakdown

Yesim has the lowest entry price we found for Belgium — 500MB for a single day at $0.51 — across a genuinely large 36-plan catalog. Its unlimited pricing scales almost linearly by the day: $3.93 for 1 day, $27.52 for a week, $64.03 for a full 30 days. That's useful if you want to buy exactly the number of days you're traveling rather than round up to a fixed weekly or monthly plan. Real discount code active:

Yesim -20% ESIMKART20 First payment only

20% off the first Yesim purchase for new users

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co:sim has by far the widest selection for Belgium — 84 active plans — starting at $0.99 for a genuine Unlimited day pass. Its catalog runs the full spectrum from tiny test-run bundles up to large long-duration packages, so it's worth checking directly for your specific data need rather than assuming one "typical" co:sim price.

Ubigi is one of the more established names in this list, with a broad 59-plan catalog starting at $2.00 for 0.5GB over 2 days. Its real unlimited tiers start from $19.00 for a week, scaling up through 15- and 30-day options — a solid mid-range pick if you want a recognized brand without paying the premium end of the market. Real discount code active:

Ubigi -10% ESIMKART10 First payment only

10% off for new customers on first purchase

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AirSims is the standout for anyone who actually wants unlimited data without an inflated price. Its cheapest plan is a genuine unlimited day for $2.11, and its 30-day unlimited plan at $18.29 beats every other unlimited option we found for Belgium by a wide margin — Yesim's 30-day unlimited runs $64.03 for comparison. Real discount code active:

AirSims -10% ESIMKART10

10% off

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MobiMatter runs a large, well-organized catalog starting at $3.49 for 1GB over 14 days, with sensible scaling through the middle tiers — 18GB for 30 days at $16.99, 36GB for 30 days at $29.99. It's a solid pick if you want a fixed-data plan sized closely to an actual trip's data budget rather than an all-you-can-use option. Real discount code active:

MobiMatter ESIMKART Cashback

Up to 50% cashback (up to $5) in wallet credit on your first purchase

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eSIMo starts reasonably at $3.90 for 1GB over 7 days and currently runs a real 20% first-purchase discount code (see our full eSIMo discount code breakdown for the exact math) — worth factoring in if you're already comparing eSIMo against the rest of this list, since it can meaningfully change where it lands. Its higher data tiers scale less competitively, though: 20GB for 30 days runs $24.90, well above what MobiMatter or Ubigi charge for similar data. Real discount code active:

eSIMo -20% ESIMKART20 First payment only

20% off

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Maya Mobile takes a completely different approach — no fixed-data tiers at all, just flat-rate unlimited plans at 3, 7, 14, or 30 days ($9.99 / $19.99 / $27.99 / $49.99). It's not always the cheapest unlimited option on this list, but it's the simplest: no comparing GB amounts, just picking how many days you need. Real discount code active:

Maya Mobile -10% ESIMKART10

10% off.

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Why Prices Vary So Much

A cheap day pass and an expensive long-duration bundle showing up in the same country's plan list looks strange until you realize they're not competing products. The cheap end is built for a single day of light use — checking maps, messaging, email. The expensive end is typically a large data allowance over a long validity window, aimed at extended stays rather than a weekend trip. The real skill in shopping for an eSIM isn't finding "the cheapest plan" in isolation, it's matching a plan's data and duration to your actual trip — a genuinely useful day-pass can beat a genuinely wasteful monthly plan if you're only in Belgium for two days.

Picking by Trip Type

A weekend in Brussels (2-4 days): A single-day or short fixed-data plan from Yesim, co:sim, or AirSims covers this without paying for validity you won't use.

A week-long trip covering Brussels, Bruges, and Antwerp: Either a 7-day fixed-data plan (MobiMatter or Ubigi both have reasonable options in this range) or AirSims' unlimited tier if you expect to use a lot of data for navigation, video calls, or content while traveling.

A month-long stay, business or otherwise: This is where AirSims' unlimited plan at $18.29 or Maya Mobile's flat unlimited tier at $49.99 make the most sense — both remove the need to track remaining data entirely.

Practical Caveats

A cheap headline price isn't the whole picture. Check the actual data amount against how you'll use it — video calls and streaming eat data far faster than messaging and maps. And a discount code, where one exists, is a real saving but only ever a percentage off that provider's price — it doesn't change how that provider compares to everyone else in this list. The most reliable approach is still to check the full, live Belgium plan list, sorted by price, price-per-GB, and price-per-day, rather than relying on a single provider's marketing.

One more thing worth knowing before you shop: like every plan table on this site, the comparisons above exclude plans that bundle voice minutes or SMS by default, since most travelers buying a data eSIM only care about data and a bundled-voice plan usually costs more for the same data allowance. If you specifically want calling minutes included, the full Belgium plan list has a checkbox to include those too.

Getting Started

New to eSIMs generally? Our beginner's guide to how eSIMs work covers installation and compatibility from scratch. And for the full, live list of every Belgium eSIM plan we track — sortable by price, data, and duration — see the complete Belgium plan list.