United Kingdom CARRIER · PUBLISHED TARIFFS

Three UK international roaming: compare the trip cost

See the dated roaming options, what the selected home plan includes and how the trip price compares with a source-checked eSIM. This is a published-price comparison, not a service-quality verdict.

Three Your Way price guide effective 12 October 2026, post-April cohort (opens in a new tab) · Checked 2026-10-20Three UK latest price guides (opens in a new tab) · Checked 2026-10-20Three UK Go Roam (opens in a new tab) · Checked 2026-10-20

Edition reviewed 2026-10-20 · Edition 2026-10

Reference home plan: Three Your Way Lite 30GB consumer plan joined or upgraded on/after 19 April 2026, without inclusive roaming or a Full Speed add-on.
Standard requested data: 7 GB over 7 days
Home subscription: Excluded from both comparisons
Included roaming: Verified eligibility required

YOUR TRIP, THE PUBLISHED COST

What could roaming cost you?

Showing the standard 7-day trip from the dated edition.

7 days · 7 GB requested · Japan

Three UK 7-day Go Roam Around the World Extra passRolling 168 hours from first qualifying use. · Uses domestic data, up to 12 GB roaming fair-use limitUSD comparison: USD 55.99. Home-plan subscription excluded.GBP 42.00

miesim.es 10GB eSIM Data for 7 Days for Japan10 GB · 7 days · Price checked 2026-10-19USD comparison: USD 8.92. Provider lists tax as included.EUR 7.95

eSIM costs less byUSD 47.06

Check current price at miesim.es (opens in a new tab)

Fixed edition price, checked 2026-10-19. This button opens current provider options; it does not guarantee the edition price.

Assumptions, billing and sources

7 GB requested over 7 days. Unit costs divide both trip prices by the same requested GB. Unused allowance and speed limits are described separately; this is not a speed test.

For Go Roam passes, enough UK data remains within the shared 12GB monthly roaming fair-use limit.
The Lite plan has a published maximum download speed of 100Mbps; actual roaming speed and service depend on the visited network.
A lower customer-set Spend Cap can block purchases; no prior cap usage is assumed.
Passes can be bought in advance and are redeemed in purchase order; the 12GB cap is monthly, not per pass.
Quantity comparison: 1 GB each travel day. Network access, speed, calls and SMS are not equivalent.
Quoted retail charges use the stated tax basis; account-specific taxes and checkout fees may change the amount paid.
This roaming product is capped at 100 Mbps.
No earlier account roaming spend or additional-spend consent is assumed.

eSIM package conditions

Choose the exact allowance and validity on the destination page; this link does not preselect the UUID package.
The provider feed says activation starts on first use.
Data-only package. Traditional calls and SMS are not included. Optional app calling or separately purchased numbers are not included in this price.

About these prices

1 GB requested per day. A single billing cycle is assumed. Home-plan subscription is excluded. Choose an included-roaming profile only if its eligibility applies to you.

Lowest-cost modeled eligible product or defined pack only. We do not combine arbitrary roaming add-ons. The eSIM comparison uses a limited, dated retail selection.

This edition uses 73 frozen reference packages selected from 362 qualifying fixed-data offers from 2 providers (Torisim, miesim.es), a limited catalog selection. Benchmark packages have explicit tax-included evidence. Incremental published retail charges. UK/Ireland tax-inclusive prices, Australian published consumer roaming charges and US/Canadian prices before account-specific taxes are retained as stated; tax treatment is disclosed by carrier. eSIM references have explicit tax-inclusive evidence. Ratios are comparisons of these quoted charges, not tax-normalized checkout bills.

THE STANDARD DESTINATIONS

Three UK roaming cost by country

7 days at 1 GB per day. A missing or insufficient option is shown as not comparable, rather than a guessed price.

Find a country in the carrier table10 destinations

7 days at 1 GB per day, using Three Your Way Lite 30GB consumer plan joined or upgraded on/after 19 April 2026, without inclusive roaming or a Full Speed add-on.. USD totals use the edition exchange rates. Home-plan subscription and unconfirmed taxes are excluded.
Country	Carrier option	Roaming trip	eSIM trip	Cost difference	Sources and current prices
Japan	7-day Go Roam Around the World Extra passRolling 168 hours from first qualifying use.	GBP 42.00USD 55.99	EUR 7.95USD 8.92 · 10 GB	USD 47.06eSIM costs less	Three Your Way price guide effective 12 October 2026, post-April cohort (opens in a new tab) · Checked 2026-10-20Three UK latest price guides (opens in a new tab) · Checked 2026-10-20Three UK Go Roam (opens in a new tab) · Checked 2026-10-20 Compare Japan eSIMs
Italy	7-day Go Roam in Europe passRolling 168 hours from first qualifying use.	GBP 12.00USD 16.00	EUR 8.95USD 10.05 · 10 GB	USD 5.95eSIM costs less	Three Your Way price guide effective 12 October 2026, post-April cohort (opens in a new tab) · Checked 2026-10-20Three UK latest price guides (opens in a new tab) · Checked 2026-10-20Three UK Go Roam (opens in a new tab) · Checked 2026-10-20 Compare Italy eSIMs
France	7-day Go Roam in Europe passRolling 168 hours from first qualifying use.	GBP 12.00USD 16.00	EUR 7.45USD 8.36 · 10 GB	USD 7.63eSIM costs less	Three Your Way price guide effective 12 October 2026, post-April cohort (opens in a new tab) · Checked 2026-10-20Three UK latest price guides (opens in a new tab) · Checked 2026-10-20Three UK Go Roam (opens in a new tab) · Checked 2026-10-20 Compare France eSIMs
Spain	7-day Go Roam in Europe passRolling 168 hours from first qualifying use.	GBP 12.00USD 16.00	EUR 8.95USD 10.05 · 10 GB	USD 5.95eSIM costs less	Three Your Way price guide effective 12 October 2026, post-April cohort (opens in a new tab) · Checked 2026-10-20Three UK latest price guides (opens in a new tab) · Checked 2026-10-20Three UK Go Roam (opens in a new tab) · Checked 2026-10-20 Compare Spain eSIMs
Thailand	7-day Go Roam Around the World Extra passRolling 168 hours from first qualifying use.	GBP 42.00USD 55.99	USD 13.99USD 13.99 · 10 GB	USD 42.00eSIM costs less	Three Your Way price guide effective 12 October 2026, post-April cohort (opens in a new tab) · Checked 2026-10-20Three UK latest price guides (opens in a new tab) · Checked 2026-10-20Three UK Go Roam (opens in a new tab) · Checked 2026-10-20 Compare Thailand eSIMs
South Korea	7-day Go Roam Around the World Extra passRolling 168 hours from first qualifying use.	GBP 42.00USD 55.99	EUR 5.45USD 6.12 · 10 GB	USD 49.87eSIM costs less	Three Your Way price guide effective 12 October 2026, post-April cohort (opens in a new tab) · Checked 2026-10-20Three UK latest price guides (opens in a new tab) · Checked 2026-10-20Three UK Go Roam (opens in a new tab) · Checked 2026-10-20 Compare South Korea eSIMs
Turkey	7-day Worldwide Data Travel PassRolling 168 hours from first data use.	GBP 26.00USD 34.66	EUR 8.95USD 10.05 · 10 GB	USD 24.61eSIM costs less	Three Your Way price guide effective 12 October 2026, post-April cohort (opens in a new tab) · Checked 2026-10-20Three UK latest price guides (opens in a new tab) · Checked 2026-10-20Three UK Go Roam (opens in a new tab) · Checked 2026-10-20 Compare Turkey eSIMs
Mexico	7-day Worldwide Data Travel PassRolling 168 hours from first data use.	GBP 26.00USD 34.66	EUR 18.95USD 21.27 · 10 GB	USD 13.39eSIM costs less	Three Your Way price guide effective 12 October 2026, post-April cohort (opens in a new tab) · Checked 2026-10-20Three UK latest price guides (opens in a new tab) · Checked 2026-10-20Three UK Go Roam (opens in a new tab) · Checked 2026-10-20 Compare Mexico eSIMs
Indonesia	7-day Go Roam Around the World passRolling 168 hours from first qualifying use.	GBP 30.00USD 39.99	USD 13.99USD 13.99 · 10 GB	USD 26.00eSIM costs less	Three Your Way price guide effective 12 October 2026, post-April cohort (opens in a new tab) · Checked 2026-10-20Three UK latest price guides (opens in a new tab) · Checked 2026-10-20Three UK Go Roam (opens in a new tab) · Checked 2026-10-20 Compare Indonesia eSIMs
Singapore	7-day Go Roam Around the World passRolling 168 hours from first qualifying use.	GBP 30.00USD 39.99	EUR 11.45USD 12.85 · 10 GB	USD 27.14eSIM costs less	Three Your Way price guide effective 12 October 2026, post-April cohort (opens in a new tab) · Checked 2026-10-20Three UK latest price guides (opens in a new tab) · Checked 2026-10-20Three UK Go Roam (opens in a new tab) · Checked 2026-10-20 Compare Singapore eSIMs

BEFORE YOU TRAVEL

Check the setup and the billing triggers

Check the phone

Your exact phone needs eSIM support and the appropriate carrier unlock. The provider must accept the device.

Run the phone check

Read the exact package

Check allowance, validity, activation, hotspot and the final current checkout price.

Compare current packages

Review the home line

Calls, texts and other use can trigger roaming charges under the carrier terms. Disabling data roaming alone does not settle every billing condition.

Read carrier sources

Set the right data line

Follow the travel eSIM's activation and roaming instructions. Check your home line and automatic data switching separately.

Review phone compatibility

Existing consumer postpaid subscription is already held; its domestic monthly charge is excluded. All charged travel days fall within one billing cycle, with no earlier roaming use. Personal terrestrial smartphone data only; calls, texts, aircraft, maritime and satellite use are excluded. For Go Roam passes, enough UK data remains within the shared 12GB monthly roaming fair-use limit. The Lite plan has a published maximum download speed of 100Mbps; actual roaming speed and service depend on the visited network. A lower customer-set Spend Cap can block purchases; no prior cap usage is assumed.

Included-plan eligibility: Value can include Europe and Complete can include all Go Roam bands. Older contracts and unused included passes can cost less. Legacy Data Passport is not newly purchasable after 14 June 2026 and is excluded.

CHECK THE CURRENT PACKAGE

Compare an eSIM for your trip

These are dated retail benchmarks, not physical test recommendations. Confirm phone compatibility, hotspot, activation and the final price before buying.

Destination

Open the current plan finder

Direct provider links are not affiliate links.

7 days · 7 GB requested

miesim.es 10GB eSIM Data for 7 Days for Japan

10 GB · 7 days · Checked 2026-10-19

EUR 7.95Check current price at miesim.es (opens in a new tab)

Three UK roaming questions

What does the Three UK comparison include?

This page uses the Three Your Way Lite 30GB consumer plan joined or upgraded on/after 19 April 2026, without inclusive roaming or a Full Speed add-on. reference profile, the dated carrier sources and the standard trip shown in the table. It excludes the home-plan subscription. Included-roaming profiles apply only when their verified eligibility matches your plan.

How is the roaming cost multiple calculated?

For the same trip and requested data amount, we divide the carrier roaming cost per requested GB by the eSIM package cost per requested GB. Because both sides use the same denominator, the multiple is also the roaming trip price divided by the eSIM package price. A package may include unused data. We describe caps and conditions separately and do not claim equal performance.

Is roaming ever cheaper than an eSIM?

Yes. An eligible home plan may include roaming, or a carrier add-on may cost less for the selected trip. Those results remain visible. The comparison excludes the home-plan subscription and does not assume every customer qualifies for an included benefit.

Why is a carrier not ranked?

A rank requires current, comparable costs for the complete standard destination basket. Missing eligibility, unavailable source facts, an insufficient data allowance or expired checks leave a carrier unranked. An unknown price is never treated as zero.

Have you physically tested these eSIMs?

This edition compares published carrier tariffs and source-checked retail eSIM packages. It does not use physical activation tests, measured speeds or a reliability score. Prices, coverage, eligibility and checkout terms can change.

CHECK THE ORIGINAL INFORMATION

Three UK sources and conditions

Published tariffs and eligibility can change. Original source links and their independent check dates are shown above. Saved captures are linked only where available; provider buttons open current options. Use the complete method and edition history alongside these figures.

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