Best eSIM for Belgium (2026): Prices, Networks & Plans

Roafly is the best-value choice in this comparison for visitors who want affordable fixed-data plans with access to Proximus, Orange and BASE. Its 5 GB and 10 GB packages have the lowest standard prices among the equivalent 30-day, one-off offers compared below.

That combination matters: you pay less while getting access to three Belgian networks, with hotspot sharing available across your purchased allowance. If your journey continues into France or the Netherlands, the next decision is whether a Belgium-only plan or a regional Europe package better fits the trip.

Belgium eSIM prices: 5 GB and 10 GB compared

The table focuses on prepaid, one-off packages with 30-day validity. Holafly’s unlimited offer appears separately within its row because its allowance and duration differ.

Prices and network details checked on 26 October 2026 using official provider listings. Prices are in USD before discount codes. Dashes indicate that no matching one-off package is included in this comparison. Prices, networks and conditions can change.

Roafly’s price advantage applies at both selected data levels. The 10 GB package costs $3 less than Airalo, $6 less than Nomad and $6.99 less than Saily, while retaining the same 30-day validity.

Ubigi’s 5 GB monthly subscription is excluded from the one-off comparison because it renews automatically and can be cancelled only after three months. It should not be treated as a single payment for one short holiday.

Why Roafly offers strong value in Belgium

The appeal starts with the combination of lower prices and three-network access. Roafly supports Proximus, Orange and BASE, giving you more disclosed network options than the Airalo, Ubigi and Nomad offers in this comparison.

Its package sizes also make the upgrade decision straightforward. Moving from 5 GB to 10 GB costs just $2.50 extra, doubling your allowance without shortening the validity period. That is a useful step up if your Brussels stay becomes a longer trip through Antwerp, Ghent and Bruges, or if you expect to share data with a laptop.

Hotspot use comes from the same purchased allowance, with no separate hotspot quota. You can decide how much to use on your phone and how much to share, although laptop updates, cloud backups and video calls can consume that allowance quickly.

Roafly also supports top-ups, so you can add data if your plans change. Validity begins when the eSIM first connects to a supported network in Belgium, allowing you to install it before departure.

Compare the current Belgium eSIM plans and select the allowance that fits your trip.

How the other providers compare

Airalo

Airalo offers both data-only packages and separate packages with calls and texts. The prices in our table are for data-only service.

Its Belgium offer names Telenet as the primary network. Against those packages, Roafly combines lower prices at both selected data levels with access to Proximus and Orange as well as BASE. Airalo’s separate voice-and-text packages deserve consideration if traditional calling is a requirement, but they are a different purchase from the data plans compared here.

Saily

Saily supports hotspot use without a separate sharing restriction, and its app lets you add plans for future destinations to an existing eSIM.

Its Belgium product page does not identify the local partner operators. That leaves less network information available before purchase, rather than establishing that coverage is poor. At the matched 5 GB and 10 GB levels, its standard prices are higher than Roafly’s.

Ubigi

Ubigi’s one-off 10 GB package lasts 30 days and supports Orange and Telenet. Its reusable eSIM and the ability to recharge through the app without remaining data or Wi-Fi are useful features.

The important distinction is between its one-off offers and monthly subscriptions. The latter renew automatically and carry the three-month cancellation condition, so the monthly headline price needs to be considered alongside the commitment.

Nomad

Nomad supports Proximus and Orange, offers hotspot sharing and has add-on options for extending data use.

Its selected packages match Roafly’s 30-day validity, making the price comparison straightforward. Roafly costs less at both data levels and adds BASE to the disclosed network options.

Holafly

Holafly also supports all three networks represented by Proximus, Orange and Telenet. Three-network access is therefore not exclusive to Roafly.

Its unlimited package is priced by trip length, with seven days costing $27.50. Hotspot sharing is limited to 1 GB per day, and temporary speed reductions may apply under fair-use rules. This is a different proposition from a fixed allowance that you can use or share according to your own daily needs.

What three-network access means for your trip

Brussels, Bruges and an Ardennes village present different surroundings for a mobile connection. Buildings, terrain, network load and your device can all influence the signal you receive.

Roafly’s support for three local networks provides a broader set of connection options than an offer naming only one. It does not establish that every network will be available at every location or that the eSIM will always select the fastest connection.

The naming can also be confusing: BASE uses the Telenet network. Seeing BASE on one provider’s page and Telenet on another does not mean they represent two additional independent networks.

If your itinerary includes rural accommodation or driving through the Ardennes, use the Belgian regulator’s mobile coverage guidance and maps to assess the places you actually plan to visit. Coverage maps describe expected conditions; they are more useful for a specific route than a blanket promise of nationwide performance.

Should you buy 5 GB or 10 GB?

Your habits matter more than the number of nights alone.

• 5 GB suits a lighter city break: navigation, messaging, restaurant searches and occasional browsing, with hotel Wi-Fi handling larger downloads.

• 10 GB gives more room for a fuller itinerary: frequent social media, several city stops, occasional video calls or some laptop sharing.

• Regular streaming and substantial laptop use need a larger allowance: video quality, backups and software updates can change consumption considerably.

These are practical starting points, not guaranteed usage totals. Download offline maps before departure and keep automatic photo backups and large updates on Wi-Fi.

With Roafly, the small price difference between the two packages makes 10 GB a sensible choice when you are unsure how much you will use.

Belgium-only trip or a wider European route?

Roafly’s Belgium package covers Belgium. Travelling onward to Paris, Amsterdam or another country calls for a package whose coverage explicitly includes the next destination.

EU roaming rules and travel-eSIM coverage are different things. Buying a package labelled “Belgium” does not, by itself, establish that its allowance works throughout Europe.

For a multi-country itinerary, compare Europe eSIM plans before choosing separate country packages. Check the actual destinations included, particularly if your route extends beyond the EU.

If you already have an EU/EEA mobile subscription with sufficient included roaming data, you may not need another plan. The EU roaming rules explain the applicable fair-use conditions; your operator can confirm your allowance.

Set up your Belgium eSIM before departure

Installing while you have a stable internet connection makes arrival simpler.

1. Check your phone. It must support eSIM and be unlocked for use with other carriers.

2. Install your Roafly eSIM before travelling. Follow the supplied installation instructions while connected to Wi-Fi.

3. Select Roafly for mobile data when you arrive. Enable data roaming for the Roafly line.

4. Keep your home line’s data roaming off. Disable automatic mobile-data switching if it could move usage back to your regular SIM.

5. Monitor the remaining allowance. Add a top-up when needed rather than deleting the installed eSIM.

Save your accommodation address, arrival directions and travel tickets offline as part of the same preparation.

Frequently asked questions

Does Roafly include a Belgian phone number?

No. Roafly’s Belgium plans provide mobile data without a local phone number or traditional calls and SMS. Internet calling and messaging apps can use the data connection.

Can I keep my existing WhatsApp number?

Yes. You can continue using WhatsApp with your existing registered number while Roafly supplies the mobile data. Changing the SIM used for internet access does not require changing your WhatsApp account number.

Can I keep my regular SIM active?

Yes, if your device supports the required combination of active SIMs. Select Roafly for mobile data and retain your regular line if you need it for calls or messages. Your home operator’s charges still apply to services used through that line.

The verdict

Roafly offers a clear advantage for a Belgium trip: the lowest prices among the matched one-off 5 GB and 10 GB packages compared here, combined with Proximus, Orange and BASE access.

Thirty-day validity, full-allowance hotspot sharing and top-ups strengthen that purchase case. For visitors staying within Belgium who want affordable mobile data and clearly disclosed network options, Roafly is the strongest value choice in this comparison.

Disclosure: Roafly publishes this guide and is included in the comparison.