Three roaming in the United States: what it costs, and when an eSIM is cheaper
Data in the United States is included with Complete. Otherwise, it costs £8.00/day (Daily roaming charge – Go Roam Around the World). An eSIM for 7 days and 6 GB costs from $12.99 (GoMoWorld).
Rates checked on October 21, 2026 in the official price guide · Source: Three
The best eSIMs in the United States for a week
For 7 days and 6 GB
- 1Best unlimited
Ubigi
Unlimited · 7 days
$23.00$3.29 per day- 25 GB at full speed, then reduced speed
- Network: T-Mobile
- Hotspot allowed
- 2Cheapest
GoMoWorld
9 GB · 30 days
$12.99$1.44 per GB- Lowest total price for 7 days
- Hotspot allowed
- 3Best price per GB
Orange Travel
20 GB · 14 days
€17.99€0.90 per GB- Lowest price per GB for this trip
- Networks: AT&T, T-Mobile, Union Wireless, and Verizon
- Hotspot allowed
Three steps, three questions: the best unlimited plan, the cheapest and the best price per GB, from three different providers. How we pick the podium · Affiliate links
Three or an eSIM in the United States: our verdict
Depending on your plan and trip length, at the prices read on October 22, 2026.
If your plan includes the United States
Keep Three
With Complete, data in the United States is included at no extra cost, within your allowance abroad.
Otherwise, with Three
£8.00/day
Daily roaming charge – Go Roam Around the World. For 7 days and 6 GB, expect £26.00.
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Data in the United States with Three: our analysis
What Three’s rate sheet and eSIM prices show, as checked on October 22, 2026.
The right pass for your trip length
- 3 daysGo Roam Around the World pass, 3-day£12.50
- 1 weekData Travel Pass Worldwide 7-day, 18GB£26.00
- 2 weeks2 × Data Travel Pass Worldwide 7-day, 18GB£52.00
- 1 month10 × Go Roam Around the World pass, 3-day£125.00
Against the cheapest eSIM
Three charges in GBP and the cheapest eSIM is sold in USD: we convert nothing. For a week, expect £26.00 with Three and $12.99 with the eSIM (GoMoWorld).
eSIMs in the United States at a glance
- In the United States, we compare plans from 7 eSIM providers: GigSky, GoMoWorld, Jetpac, Nomad, Orange Travel, Ubigi, and Yesim.
- The cheapest unlimited plan for a week is from Ubigi: $23.00 (Unlimited · 7 days).
Three applies the same rate in 6 other destinations we track, including Australia, Indonesia, New Zealand, Peru, and Singapore.
Plan by plan
What applies in the United States depending on your Three plan.
What Three’s official rate sheet sets out in the United States, offer by offer. “Included” means at no extra cost, within your allowance abroad: your Three account shows the one on your line.
| Plan or offer | Data in the United States |
|---|---|
| Daily roaming charge – Go Roam Around the World | £8.00/day |
| Complete | Included |
| Go Roam Around the World pass (3-day) | £12.50 for 3 days |
| Go Roam Around the World pass (7-day) | £30.00 for 7 days |
| Go Roam Around the World pass (14-day) | £60.00 for 14 days |
| Data Travel Pass Worldwide 7-day (18GB) | £26.00 for 7 days |
| Data Travel Pass Worldwide 14-day (40GB) | £54.00 for 14 days |
What your trip costs
With the Three roaming rate, against today’s cheapest eSIM, for everyday use.
| Trip | With Three | Cheapest eSIM | The offer |
|---|---|---|---|
| 3 days · 3 GB | £12.50 Go Roam Around the World pass, 3-day | $6.00 Nomad | See the plan |
| 7 days · 6 GB | £26.00 Data Travel Pass Worldwide 7-day, 18GB | $12.99 GoMoWorld | See the plan |
| 14 days · 12 GB | £52.00 2 × Data Travel Pass Worldwide 7-day, 18GB | €17.99 Orange Travel | See the plan |
| 30 days · 24 GB | £125.00 10 × Go Roam Around the World pass, 3-day | €26.60 Yesim | See the plan |
Every eSIM in the United States →
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The United States with other UK carriers
The same trip with the other UK carriers we track, from their official rate sheets.
All 4 UK carriers we track include the United States in at least one plan: EE, O2, Three, and Vodafone.
EE
O2
VodafoneTurn off Three roaming and use an eSIM
Four settings, before you leave or on the plane.
- 1
Install the eSIM at home
Buy it and scan its QR code before you leave: with most providers, the plan only starts when you first connect at your destination.
- 2
Keep Three for calls
In your settings, keep your Three line for calls and texts, and pick the eSIM for mobile data.
- 3
Turn off Three roaming
On iPhone: Settings › Cellular › your Three line › Data Roaming. On Android: Settings › Mobile networks › Roaming.
- 4
Keep eSIM roaming on
A travel eSIM uses the local networks: its data roaming must stay on.
Three roaming in the United States: your questions
Answered from the Three price guide and today’s prices.
Is data in the United States included in my Three plan?
Yes, with Complete. Otherwise, it costs £8.00/day (Daily roaming charge – Go Roam Around the World).
How much does data cost in the United States with Three?
£8.00/day (Daily roaming charge – Go Roam Around the World), so £56.00 for 7 days and 6 GB. An eSIM covering the same week costs from $12.99 (GoMoWorld), checked on October 22, 2026.
Which Three pass should I get for the United States?
The best Three option depends on how long you stay: for 3 days, Go Roam Around the World pass, 3-day (£12.50); for a week, Data Travel Pass Worldwide 7-day, 18GB (£26.00); for two weeks, 2 × Data Travel Pass Worldwide 7-day, 18GB (£52.00); for a month, 10 × Go Roam Around the World pass, 3-day (£125.00).
Three or an eSIM in the United States: which is cheaper?
Three charges in GBP and the cheapest eSIM is sold in USD: we convert nothing. For a week, expect £26.00 with Three and $12.99 with the eSIM (GoMoWorld).
Which UK carriers include the United States?
All 4 UK carriers we track include the United States in at least one plan: EE, O2, Three, and Vodafone.
Which network does an eSIM use in the United States?
Depending on the plan, the 7 providers we compare in the United States list AT&T, Globalstar, T-Mobile, Verizon, and Union Wireless.
How do I avoid roaming charges in the United States?
Use a travel eSIM for data and turn off data roaming on your Three line. You keep your number for calls and texts.
Can I keep my Three number with an eSIM?
Yes, on an eSIM-compatible phone: your Three line stays on for calls and texts while the eSIM carries the data.
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