Hungary eSIM

Most trips to Hungary start in Budapest, where the airport bus has its own ticket that a day pass doesn't cover, the money is forints, not euros, and Vienna and Bratislava are both a train ride away, in other countries. A Hungarian tourist SIM means a shop counter and your passport, so the simplest Hungary eSIM is one you install at home; if your SIM is from an EU country, it already roams here like at home.

What a week of data costs in Hungary

Prices for 7 days of data, checked on 2–3 November 2026. Daily passes charge for each day you use the phone abroad, per phone.

For a family of four on Verizon, that's $336 for one week. O2 UK and T-Mobile customers may need nothing extra for a short trip, though 256 kbps is slow for maps and photos. The Yettel and Telekom tourist plans are cheap, but each needs ID, and Telekom's works out at 10,000 forints even if you only stay a week.

If your SIM is from the EU, it already roams like at home in Hungary, as long as you spend more time at home than abroad. UK plans aren't part of that system any more, which is why the UK rows above carry charges.

Landing at Budapest Ferenc Liszt Airport (BUD)

Switch the kimsim line on as the plane taxis to the gate and turn on Data Roaming for that line only. Flights from inside Schengen, such as Rome or Stuttgart, arrive at Terminal 2A; long-haul flights, such as those from China, use Terminal 2B. If you still need to install, the airport gives four hours of free Wi-Fi. Then go through passport control, collect your bags and walk out with a working map.

SIM counter. Telekom's Airport HUB is on the arrivals level of Terminal 2B, landside, past baggage reclaim. Bring your passport if you plan to buy there.

Entry rules. Since 12 October 2025, the EU's Entry/Exit System records non-EU visitors' fingerprints and a photo at the Schengen border, and it has been fully in place since 10 April 2026. Budapest Airport flags this on its arrivals page, so expect a longer queue the first time. ETIAS, the €20 travel authorisation for visa-free visitors, is not in operation yet; the official site says the EU will announce the start date several months ahead. So don't pay any website that offers you an ETIAS today. British visitors can stay up to 90 days in any 180 across Schengen. Your passport must have been issued less than 10 years before you arrive and expire at least 3 months after you leave, and border staff may ask for proof of accommodation, such as a hotel booking.

Into the city. BKK, Budapest's transport authority, runs two airport buses:

• 100E Airport Express to Kálvin tér and Deák Ferenc tér in the centre. Its own single ticket costs 2,500 Ft since 1 October 2025 and is valid only on the 100E. If you already hold a Budapest pass, you pay a 1,000 Ft supplement instead. You can tap a contactless bank card or phone on the bus's Pay&GO reader to buy and validate up to five tickets at once.
• 200E to Kőbánya-Kispest, the end of metro line M3, on normal BKK tickets. Since 28 October 2026 the driver also takes bank cards for a paper single ticket.

The airport also has a Budapest public transport counter for tickets and information. For a ride, Bolt and Uber both list airport trips in Budapest. The UK government warns that some taxi drivers are part of overcharging scams, so use a reputable company or an app.

Networks and coverage

Hungary has three mobile networks: Magyar Telekom (shown as Telekom), Yettel and One. Telekom is a Deutsche Telekom subsidiary; it dropped the old Westel name for T-Mobile in 2004 and launched commercial 5G in April 2020. Yettel is the former Telenor Hungary, renamed on 1 March 2022, and is owned by e& and PPF. One is the former Vodafone Hungary: 4iG's Antenna Hungária and a state investment company bought it on 31 January 2023, and it took the One name on 1 January 2025.

The Hungary plan uses Yettel and One, not Telekom. They appear above under their old names, Telenor Hungary and Vodafone, and your phone may show either the old or the new name, but never kimsim. Yettel says its 4G reaches more than 99% of people outdoors and its 5G 52%, mostly in cities and busy tourist areas. That's the operator's own figure, for people, not land. Expect weaker signal in the hills above the Danube Bend, in rural parts of the east and inside thick-walled cellars, baths and churches.

Borders. Hungary touches Slovakia, Ukraine, Romania, Serbia, Croatia, Slovenia and Austria. Near Sopron, Győr, Esztergom or Szeged, your phone can join a foreign network before you cross. If that happens, choose Yettel or One by hand. The networks your plan uses are listed above.

Budapest, the Danube Bend and Lake Balaton

• Budapest: generally good coverage on the street. In ruin bars, wine cellars and the thermal baths, signal can drop indoors; most bathers leave their phone in a locker anyway. The Gellért Baths closed after 30 September 2025 for a renovation expected to last until 2028, so plan a different bath.
• The Danube Bend: Szentendre, Visegrád and Esztergom make the classic day trip north of Budapest, by road or by boat. Signal is fine in the towns; on the climb to Visegrád's citadel and in the wooded hills it can come and go, so save the boat times offline. Esztergom faces Slovakia across the river, which is where a foreign network can grab your phone.
• Lake Balaton: central Europe's largest lake, about 80 km south-west of Budapest. The resort towns are generally well covered; expect weaker signal in vineyards on the northern hills and out on the water.

This is general guidance, not a coverage map.

Getting around Hungary

• Budapest transport: since April 2026 you can tap a contactless card or phone at the entrance to any metro line to buy and validate a single ticket in one go. The UK government warns that you can be fined if you don't validate a ticket on boarding or at the station entrance, and that you should keep it until the end of the journey.
• Trains to Lake Balaton: most leave from Budapest-Déli, on metro line M2. Balaton InterCity trains to Siófok run hourly and take about 1 hour 20 minutes. InterCity trains need a seat reservation on top of the ticket, and tickets bought online also show in the MÁV app.
• Day trips abroad: Vienna and Bratislava are a train ride from Budapest, but a Hungary plan stops at the border. Look at Austria, Slovakia or Czechia, or the Europe plan.
• Driving: motorways need an e-vignette bought in advance, or you'll be fined. The toll operator warns you to buy it only from an authorised retailer, at the official price in forints. Hungary has zero tolerance for alcohol at the wheel, and you need dipped headlights outside towns, even by day.

Apps worth having

• BudapestGO, BKK's app, for journey planning and tickets, including the 100E airport ticket.
• MÁV for train tickets and seat reservations to Lake Balaton and beyond.
• Rides: Bolt and Uber both run in Budapest. Set accounts up at home, because sign-up can send a code by text to your usual number.
• Maps: download offline areas for the Danube Bend and any Balaton day.
• WhatsApp: guesthouses, wineries and guides often message you there. Keep your WhatsApp number working abroad.

SIM and phone rules

Hungarian operators had to identify every prepaid customer by 30 June 2017, under a change in the law. Today, Yettel says foreigners buy its SIMs in person, with a passport, ID card or driving licence, and that visitors from outside the European Economic Area must show a passport. Telekom asks for a valid document issued outside Hungary and you must be 18. Separately, you must always carry your passport in Hungary, and police won't accept a copy.

A travel eSIM installed at home skips the counter and the SIM swap. It's data only, so your home number stays in the phone for calls and texts. How calls and texts work with a data eSIM

Common mistakes

• Using a day pass on the 100E. The Airport Express has its own 2,500 Ft ticket, and a pass only gets you the 1,000 Ft supplement. Take the 200E and metro M3 if you want to use normal tickets.
• Leaving Data Roaming on for your home line. For non-EU SIMs, that's where daily charges start. Why roaming goes on for the kimsim line only
• Day trips over the border. Vienna, Bratislava, Subotica and Novi Sad are outside a Hungary plan. Serbia isn't on the Europe plan either; the Europe and Turkey plan or a Serbia eSIM covers it. How regional plans work
• Carrying a passport copy. Police can ask for ID and won't accept a photocopy, so keep the real passport on you.
• No way to call for help. 112 reaches ambulance, fire and police in Hungary. A data-only eSIM can't dial it, so keep your home line on for calls.

More on Hungary

• eSIM for Europe: a guide for US, Canada and Australia
• How much data do I need for a week abroad?
• eSIM vs roaming: which is cheaper for your trip?

How we put this page together

We checked Telekom's and Yettel's tourist pages, Yettel's coverage release, Budapest Airport's own pages, BKK, MÁV, the Hungarian toll operator, carriers' roaming price pages, and EU and UK government sites on 1–3 November 2026. BKK's, AT&T's and T-Mobile's pages block automated checks, so we read those facts from the pages' search listings. We couldn't find a current official Hungarian source on prepaid ID rules, so that line rests on the operators' own pages and a 2017 news report. We haven't measured speeds or coverage in Hungary ourselves, so coverage notes are general guidance, not a map. kimsim sells the eSIMs on this page.