Free eSIM for Luxembourg 
Get 3 GB of free mobile data across the Grand Duchy and 38 other European countries. Activate in under two minutes — from Findel Airport to the sandstone cliffs of Mullerthal. No credit card, no SIM swap, no roaming surcharge when you cross into France, Germany or Belgium.
Free for new users · Credit card for identity verification only — never charged · Valid 3 days
Why skip a POST Luxembourg tourist SIM
Luxembourg is the most trilingual country in Europe — staff at POST stores switch between Luxembourgish, French and German mid-sentence, which is charming until you're trying to set up a prepaid SIM with a foreign passport. The tourist-friendly options still require an ID scan, a local address (hotels sometimes refuse), and a minimum top-up. A 99esim eSIM skips all of that: install before you land, connect automatically on the tarmac at Findel, and roam transparently into France, Germany and Belgium when you drive the 30 minutes to a border town.
- No passport scans or in-store ID verification required
- Seamless handoff at France, Germany, Belgium borders (no roaming bills)
- Works in EU institutions buildings on the Kirchberg plateau
- 3 GB covers a full weekend of bank-district meetings + Grund wandering
How Luxembourg's mobile networks work with 99esim
Luxembourg has exceptionally dense coverage for its size — at 2,586 km² with 3 full-scale operators, there are effectively no signal gaps anywhere inside the country. 99esim routes through POST Luxembourg (the former state telco and largest network), with automatic failover to Orange and Tango. 5G SA is active across all major towns and along the A1/A3/A6 motorways.
Arriving at Findel
Luxembourg has a single international airport, and it's small enough that you'll have your eSIM active before you reach the luggage belt. Signal is strong throughout — gates, arrivals hall, and the outdoor bus stand for the free Line 16 bus to the city.
6 km from the city centre. The free Line 16 bus to Gare Centrale keeps signal intact end-to-end. Taxis are pricey — the tram network (free nationwide) connects from Place de l'Étoile.
Where your free eSIM works best
What 3 GB covers in Luxembourg
Luxembourg trips are usually short — a weekend, a business day, a European road trip stopover. 3 GB is genuinely plenty here given the country's compact size and excellent WiFi in cafés, hotels and public transport.
Luxembourg-specific travel tips
Tri-border data handoff
Drive 20 minutes in almost any direction from the capital and you'll cross into France, Germany or Belgium. Your 99esim hands off automatically — no roaming fee, no signal drop. Useful for day trips to Trier, Metz or Bastogne without paperwork.
Public transport is free — use the app
Luxembourg is the only country where all public transport is free (buses, trains, trams). The Mobilitéit.lu app gives live arrivals and routing. Data-light but worth installing the moment you land.
Mullerthal trails
The 'Little Switzerland' region has dense forest and sandstone gorges. POST Luxembourg's 4G reaches most of the Mullerthal Trail, but the deeper canyon sections (Schiessentümpel waterfall, Wolfsschlucht) can dip. Download the Komoot offline map before heading out.
EU institutions WiFi
The European Court of Justice, European Investment Bank and EU Parliament secretariat all sit on Kirchberg plateau. All have guest WiFi but coverage varies — your 99esim is a reliable fallback if you're visiting for meetings.
Travelers who used 99esim in Luxembourg
"Flew into Findel for a two-day conference at the EIB. eSIM connected before I got off the plane — Uber was waiting before I cleared customs."
"Drove Luxembourg → Trier → back in one afternoon. Didn't realize I'd crossed into Germany until my phone showed a Deutsche Telekom cell. No roaming, no hassle."
"Hiked the Mullerthal for three days. Signal held in all the trail towns and most of the forest. 3 GB was enough for maps and photos home."
Frequently asked — Luxembourg edition
Does the free eSIM work when I cross into France, Germany or Belgium?
Yes, automatically. Luxembourg sits at the intersection of all three countries, and your 3 GB works identically across all 39 covered countries. You won't see a roaming indicator or any additional charges when your phone hands off between POST Luxembourg and Orange France, for example.
Is there coverage in the Grund and casemates?
Yes. POST Luxembourg has fitted antennas around the lower city, and 5G reaches most of the Bock casemates interior. Signal thins deepest in the UNESCO cliff tunnels — typically one or two bars — but usable for maps and messaging.
Can I use it on the free trams and buses?
Yes. Public transit runs mostly above ground in Luxembourg, and the new tram line across Kirchberg and Ville Basse has strong 5G throughout. The Mobilitéit.lu app works perfectly on your free eSIM for live departures.
Will it work on the Ardennes trail network?
Mostly. The Ardennes in the north has the weakest cell density in the country, but POST covers the main towns (Vianden, Clervaux, Wiltz) fully. Deep valley hikes can drop to EDGE briefly — expected, not unusual.
Do I need to register with Luxembourg authorities?
No. The eSIM is a digital profile issued outside Luxembourg — none of the local prepaid SIM registration rules apply. You're connecting as an international roamer on Luxembourg's domestic network.
What if I burn through 3 GB at a business conference?
Top up instantly in the 99esim app. Luxembourg-region top-ups start at €2.99 for 1 GB, and Kirchberg hotel WiFi is generally reliable as a backup. No auto-renew on the free plan.
Free eSIM in other European countries
Your 3 GB works in all 39 countries. Here are a few more popular destinations:
See all 39 countries →
Ready to claim your free 3 GB in Luxembourg?
Install the 99esim app, create a free account, and your data is live in about 90 seconds.