Data for a UK trip is among the cheapest we sell anywhere in Europe, and the table below puts a number on it: our live UK prices next to Airalo’s published ones, read from their own product page on the date shown. We come in under them on all seven rows we both sell, and at five and ten gigabytes we charge less than half what they do. Three things set the UK apart from the other European guides on this site. Unlimited data is priced so low here that a week of it costs exactly what a twenty-gigabyte month costs, which turns our usual advice upside down. Jersey, Guernsey, the Isle of Man and Gibraltar, places most visitors think of as British, run their own mobile networks, so a UK plan stops at their shores. And one of the most popular day trips from Dublin ends at the Giant’s Causeway in Northern Ireland, which is the UK, across a border with no checks at all. Below: when unlimited is the right buy, what a UK plan does and does not reach, the Ireland question, and the two sizes at which a Europe plan costs the same as a UK one, then a plan for each common kind of UK trip.
How the prices compare for United Kingdom
Lumbus prices are live from our catalogue. Airalo prices are the public list prices on their own websites, in US dollars, checked on 28 September 2026. Where another provider is cheaper, the table says so.
| Plan | Lumbuslive price | Airalo |
|---|---|---|
| 1GB | $3.99 · 7 days$3.99/GBCheapest | $4.00 · 3 days$4.00/GB |
| 3GB | $4.99 · 30 days$1.66/GBCheapest | $9.00 · 7 days$3.00/GB |
| 5GB | $5.99 · 30 days$1.20/GBCheapest | $13.00 · 30 days$2.60/GB |
| 10GB | $8.99 · 30 days$0.90/GBCheapest | $19.00 · 30 days$1.90/GB |
| 20GB | $15.99 · 30 days$0.80/GBCheapest | $31.00 · 30 days$1.55/GB |
| Unlimited · 7 days | $15.99 · 7 days$2.28/day3GB/day at full speed, then 1MbpsCheapest | $27.00 · 7 days$3.86/day3GB/day at full speed, then 1Mbps |
| Unlimited · 30 days | $59.99 · 30 days$2.00/day3GB/day at full speed, then 1MbpsCheapest | $69.00 · 30 days$2.30/day3GB/day at full speed, then 1Mbps |
Lumbus is the cheapest option in 7 of the 7 plans compared.
Not in this table yet: Holafly, Saily, and Nomad. Their prices are added once checked.
Price pages checked: Airalo (28 September 2026)
Why unlimited is the right buy in the UK
Our other European guides mostly say the same thing about unlimited data: skip it for a normal trip, because a fixed plan covers it for much less. The UK is an exception, and the reason is plain arithmetic.
A week of unlimited data in the UK costs exactly what the twenty-gigabyte month costs. Three days of unlimited cost less than the ten-gigabyte month. In most of Europe the same week of unlimited costs over a third more than here, and of everything we sell, only France has a cheaper week.
Unlimited means three gigabytes a day at full speed, then a slower connection of one megabit per second until the full-speed allowance resets, every 24 hours. It comes in three, seven, fourteen and thirty-day plans. Over a week that is up to twenty-one gigabytes at full speed, spread evenly across the days, for the price of a twenty-gigabyte month you would otherwise have to ration.
The line falls at about a week. For a weekend, three days of unlimited is the cheapest way to stop counting. For a week, unlimited and the twenty-gigabyte month cost the same, so take unlimited if you will stream or share the connection, and the month if you want the data to outlast the trip. From a fortnight up, fixed data wins again: a twenty-gigabyte month plus one ten-gigabyte top-up costs about a fifth less than a fortnight of unlimited, and a month of unlimited costs about three quarters more than the fifty-gigabyte month.
- A weekend of heavy use: three days of unlimited, cheaper than the ten-gigabyte month.
- A week: seven days of unlimited or the twenty-gigabyte month, at the same price. Unlimited if you stream or share.
- Two weeks: the twenty-gigabyte month, topped up if you need more.
- A month: the fifty-gigabyte month, well under the price of a month of unlimited.
What the table shows, including the two unlimited rows
Read each price in the table above with the validity beside it. Their one-gigabyte plan lasts three days and ours a week, for a fraction less. Their three gigabytes last a week and ours a month, for a little over half the money.
At five gigabytes for a month we are under half their price, and at ten gigabytes the same. The twenty-gigabyte row lands just above half.
The unlimited rows are where the UK stands out. Their unlimited and ours work the same way, three gigabytes a day at full speed and the same slower speed after it, so the only difference is the price: a week of ours costs about three fifths of theirs, and a month about an eighth less.
Two sizes the table leaves out are worth knowing. Three days of unlimited, the weekend plan, costs about seven tenths of their three-day price. The fifty-gigabyte month costs a little under nine tenths of theirs.
British islands a UK plan does not reach
Jersey, Guernsey and the Isle of Man are Crown Dependencies rather than part of the UK, and Gibraltar is a British Overseas Territory. For a visitor the difference is easy to miss. For a phone it is the whole story: each runs its own mobile networks, so a UK plan works until the British coast drops away behind the ferry, and then it stops.
Jersey is the easy one. Its own plan costs exactly what a UK plan costs at every size up to five gigabytes, and at twenty; only the ten-gigabyte month is a little dearer. Its unlimited is dearer, about three fifths more for a week. For a day trip or a week on the island, buy the Jersey plan.
Guernsey is the expensive one. Its plans cost roughly three to four times UK prices from three gigabytes up, and there is no ten-gigabyte month, no one-day plan and no unlimited. It is on only one of our Europe plans, one of the two widest, and that turns the usual advice around: for a UK trip with a Guernsey leg, that wide Europe plan costs about a fifth to a quarter less than a UK plan and a Guernsey plan bought separately, at three and at five gigabytes.
The Isle of Man sits in between. Its plans match the UK at one gigabyte and cost about half to two thirds more from five gigabytes up, with no unlimited option. It is on the two widest Europe plans but not the cheap ones, so for a fortnight at the TT or a family visit, its own plan is the simple answer.
Gibraltar is the pleasant surprise. It is on the cheapest Europe plan that includes France, which costs exactly what a UK plan costs at three and five gigabytes, so a London and Gibraltar trip, or a Costa del Sol holiday with a day on the Rock, needs one plan rather than two. Gibraltar’s own plan also matches the UK price up to five gigabytes.
- Jersey: its own plan, at UK prices up to five gigabytes.
- Guernsey: roughly three to four times UK prices on its own; with the UK on the same trip, one of the two widest Europe plans.
- Isle of Man: its own plan, about half to two thirds more than the UK from five gigabytes up.
- Gibraltar: the cheapest Europe plan that includes France covers it, at UK prices at three and five gigabytes.
Northern Ireland is the UK. Dublin is not.
The island of Ireland holds two countries. Belfast, the Giant’s Causeway and the Causeway Coastal Route are in Northern Ireland, which is part of the UK and runs on UK networks. Dublin, Galway, Kilkenny and the Cliffs of Moher are in the Republic of Ireland, which has its own. A UK plan covers the first group, and an Ireland plan covers the second.
The border between them runs 499 kilometres, about 270 public roads cross it, and there are no checks of any kind, so the first sign you have crossed is often the speed limits switching between kilometres and miles. Near it, a phone can join a network on the other side without the car crossing anything.
That matters most on the classic day trip. Tours from Dublin to the Giant’s Causeway and Belfast are among the most popular excursions sold in the city, and on an Ireland-only plan your phone goes quiet for most of the day. Either add the one-day UK plan, the cheapest thing we sell for the UK, or cover both countries from the start.
Covering both is where the arithmetic is striking. The UK and Ireland are on both of our cheapest Europe plans, which cost exactly what a UK plan costs at three and five gigabytes. Buying a UK plan and an Ireland plan separately costs twice as much at those sizes, and around half as much again, or more, at ten and twenty gigabytes and on a week of unlimited. For any trip with real time on both sides of the border, the Europe plan is the buy at every size.
- Belfast and the Giant’s Causeway: UK networks, covered by a UK plan.
- Dublin, Galway and the Cliffs of Moher: Irish networks, covered by an Ireland plan.
- A day tour from Dublin to the Causeway: add the one-day UK plan.
- Real time on both sides: one of our two cheapest Europe plans, at the UK price at three and five gigabytes.
London plus Paris, Amsterdam or Dublin: one plan, same price
The UK is also where a lot of European trips begin: the Eurostar to Paris or Brussels, a short flight to Amsterdam, a few days in Dublin. For those, the same fact does the work: for a three- or five-gigabyte month, our two cheapest Europe plans are priced to the cent like the UK plan, and each covers more than thirty destinations.
Only one of those two includes France, so for London and Paris choose the one that lists France. Both include Ireland, the Netherlands and Belgium.
Above five gigabytes the UK plan is the cheaper of the two for the UK alone. At ten gigabytes the Europe plans run a fifth to a third dearer, and at twenty a third to a half dearer, because the UK’s own twenty-gigabyte month is priced so low. With a second country on the trip, the Europe plan still wins at every size, as it does for Ireland.
Who needs to buy data for a UK trip
Almost every visitor who lands at Heathrow. The UK left the EU roaming zone with Brexit, so EU contracts no longer have to include it. Some EU networks still do, voluntarily, and others charge, so check your own tariff by name rather than assuming.
Visitors from North America, the Gulf and Asia are on their own operator’s roaming rates, which are usually far above local data prices. For them the question is not whether to buy, but what size and shape, which is what the rest of this guide answers.
Scotland, Wales and the national parks: where the signal thins
The four national networks cover towns, cities and main roads thoroughly. The gaps are in the landscapes people travel for: the Scottish Highlands and islands, the mountain valleys of Wales and the Lake District, and remote stretches of coast.
It is improving, and publicly funded masts are still being switched on in the Highlands and islands in 2026. But on a North Coast 500 drive or a week on Skye, plan for stretches with nothing: download offline maps for the whole route before you leave a town, and treat a strong signal as the moment to check the weather, the ferry and the next booking.
Emergency calls to 999 or 112 connect on any available network, even without a working data plan.
- Towns, cities and main roads: well covered by all four networks.
- Highlands, islands and mountain valleys: expect gaps, and download maps first.
- Emergency calls to 999 or 112: any available network, with or without data.
The small print on the UK price list
The one-gigabyte week looks like the weekend plan and is not. For a quarter more, three gigabytes for a month carries three times the data for more than four times as long, and for about twice its price, three days of unlimited remove the limit altogether.
The six-month fifty gigabytes, for a single trip. The UK’s six-month plan costs about three fifths more than its fifty-gigabyte month, so for one trip buy the month. It earns its price if you will be back within six months, because it costs less than buying the fifty-gigabyte month twice.
A month of unlimited. Unlike a week of it, a month of unlimited is the wrong shape: it costs about three quarters more than the fifty-gigabyte month, and fifty gigabytes is more than a month of moderate use needs.
Two plans are worth buying that people overlook. The one-day plan, two gigabytes for a day, is the cheapest thing we sell for the UK and is right for a long layover when you leave the airport, a day ashore from a cruise, or the day trip into Northern Ireland from Dublin. It is a one-off with no top-ups, so size it to the day.
The other is three days of unlimited for a weekend. It costs less than the ten-gigabyte month and takes the counting out of a long weekend of maps, photos and video calls home.
- Skip the one-gigabyte week unless a gigabyte really covers you.
- Skip the six-month plan for a single trip; buy it if you will be back within six months.
- Skip a month of unlimited; take the fifty-gigabyte month.
- Buy the one-day plan for a layover or a day across the Irish border.
- Buy three days of unlimited for a weekend.
EE, O2, Vodafone and Three: all four, all with 5G
The UK has four mobile networks, EE, O2, Vodafone and Three, and all four run 5G. Your eSIM is not tied to one of them: the phone picks the strongest signal where you are and switches as you move, with nothing to set.
That matters most outside the cities, where one network can have the only usable mast in one glen and another the only one in the next. A plan tied to a single network would simply have nothing there. Where a network has 5G and your phone supports it, you will see it; elsewhere a solid 4G connection does everything a trip needs.
Ten UK itineraries and the plan for each
Each line assumes ordinary trip use: maps, transport apps, messages and photos, with photo backup set to Wi-Fi only. Go a size up if a laptop travels with you or if the connection is shared.
Install it at home over Wi-Fi before you fly. Nothing is used up until the eSIM first connects to a UK network, so it is safe to buy weeks ahead.
- A long weekend in London or Edinburgh: three days of unlimited, or three gigabytes for a month if you use data lightly.
- A week in London: seven days of unlimited or the twenty-gigabyte month, at the same price.
- Two weeks touring England and Scotland: the twenty-gigabyte month, topped up if needed.
- A North Coast 500 or Skye road trip: the twenty-gigabyte month, and offline maps for every region.
- A month or a term: the fifty-gigabyte month.
- London and Paris: the cheapest Europe plan that includes France, the same price as the UK plan at three and five gigabytes.
- The UK and Ireland: one of our two cheapest Europe plans, which both cover both countries.
- Dublin with a Causeway day tour: an Ireland plan plus the one-day UK plan.
- Jersey or Gibraltar on the way: Jersey’s own plan; for Gibraltar, the cheapest Europe plan that includes France.
- Back several times a year: the six-month fifty-gigabyte plan.
Frequently asked questions
Is Lumbus cheaper than Airalo in the UK?
Yes, on all seven rows we both sell in the table above, including both unlimited rows, where the daily full-speed allowance is identical on each side. At five and ten gigabytes we charge less than half their price, and a week of unlimited costs about three fifths of theirs. For a trip of about a week, seven days of unlimited is the buy, at the same price as the twenty-gigabyte month; if the trip adds Ireland, Paris or Amsterdam, a Europe plan costs the same as the UK plan at three and five gigabytes.
Is unlimited data worth it in the UK?
Yes, for trips of up to about a week. A week of UK unlimited costs exactly what the twenty-gigabyte month costs, three days cost less than the ten-gigabyte month, and only France has a cheaper week of unlimited in everything we sell. Each day brings three gigabytes at full speed, and after that the connection slows until the allowance renews 24 hours later. From two weeks up, fixed data is cheaper again: a twenty-gigabyte month plus a ten-gigabyte top-up costs about a fifth less than a fortnight of unlimited.
What size eSIM should I buy for a week in London?
Five gigabytes covers a week of maps, transport apps, messaging and photos for most people, with Wi-Fi at the hotel doing the heavy lifting. If you stream video, share the connection or work from a laptop, take seven days of unlimited instead: in the UK it costs the same as the twenty-gigabyte month and removes the counting altogether. Either way, install before you fly so the phone is online when you land.
Do I need a separate eSIM for a ferry to Jersey or the Isle of Man?
Yes. Jersey, Guernsey and the Isle of Man are Crown Dependencies with their own mobile networks, so a UK plan stops when the ferry leaves the British coast. Jersey’s own plan costs the same as a UK plan up to five gigabytes, and the Isle of Man costs about half to two thirds more from five gigabytes up. Guernsey costs roughly three to four times UK prices, and for a UK trip with a Guernsey leg, the wide Europe plan that covers both costs less than buying the two separately.
Is Gibraltar covered by a UK plan?
No, Gibraltar has its own network. Its own plan costs the same as a UK plan up to five gigabytes, and the cheapest Europe plan that includes France also includes Gibraltar, Spain and the UK, at the UK price at three and five gigabytes. That makes it the natural buy for a Costa del Sol holiday with a day on the Rock.
Does my UK plan cover Dublin?
No. Dublin is in the Republic of Ireland, which runs on Irish networks, so a UK plan stops at the border. Northern Ireland, including Belfast and the Giant’s Causeway, is the UK and is covered. For a trip to both, one of our two cheapest Europe plans covers the UK and Ireland together, at the UK price at three and five gigabytes.
Do I need a UK eSIM for a Giant’s Causeway tour from Dublin?
If your plan only covers Ireland, yes. The Causeway, Belfast and the coast road between them are in Northern Ireland, on UK networks, so an Ireland plan has no data for most of the day. The simplest fix is the one-day UK plan, the cheapest thing we sell for the UK, installed at the hotel the night before. Or buy a Europe plan that covers both countries from the start.
What should I buy for London and Paris on one trip?
The cheapest Europe plan that includes France. At three and five gigabytes it costs exactly what a UK-only plan costs, and it covers France, Belgium, the Netherlands, Ireland and most of Europe as well. Our other cheap Europe plan leaves France out, so check the list for France before you pay. Above five gigabytes it costs more than a UK plan alone, but less than a UK plan and a France plan bought separately.
Is one eSIM enough for the UK and Ireland?
Yes, and it is the cheaper way to do it. Both countries are on both of our cheapest Europe plans, which cost the same as a UK plan at three and five gigabytes. Buying a UK plan and an Ireland plan separately costs twice as much at those sizes, and around half as much again, or more, at ten and twenty gigabytes.
Is there mobile signal on the North Coast 500 and Skye?
In the villages and along much of the route, yes, but expect stretches with nothing, especially between settlements and in the glens. Coverage is improving, with publicly funded masts still being switched on in the Highlands and islands in 2026. Download offline maps for the whole route before you set off each day, and use the moments of strong signal to check weather, ferries and bookings. Emergency calls to 999 or 112 connect on any available network.
Which UK network will my eSIM use, and is there 5G?
Any of the four national networks: EE, O2, Vodafone and Three, all of which run 5G. The phone chooses the strongest one where you are and changes as you travel, which is what keeps you connected outside the cities, where the best mast in one valley may belong to a different network from the best in the next. Where 5G is available and your phone supports it, you get it; elsewhere, 4G.
Is the six-month UK plan worth it?
Only if you will be back. The six-month fifty-gigabyte plan costs roughly three fifths again as much as the fifty-gigabyte month, so for a single trip the month is the better buy. If you visit the UK again within six months of first connecting, the six-month plan costs less than buying the month twice, and the clock only starts when the eSIM first connects in the UK.
Can I use a UK eSIM for a layover at Heathrow?
If you leave the airport, yes, and the one-day, two-gigabyte plan is the right size: it is the cheapest thing we sell for the UK. If you stay airside, the terminal Wi-Fi may be all you need. Install the eSIM before you fly, because installing needs a connection and the arrivals hall is not the place to find one.
Can I use UK unlimited data as a hotspot for the family?
Yes, and hotspot use is included, but it draws on the same allowance: three gigabytes a day at full speed, shared by every device connected. That is plenty for maps and messaging across a family, and it will run out quickly if several people stream at once. For a week of heavy shared use, two unlimited plans on two phones is often the better answer than one.