The short answer
A route through Vietnam that ends in Hong Kong, or starts there, is common, and it crosses a border by air. I priced the six Asia regional plans on 25 October 2026 for a week, two weeks and a month, read what unlimited means at each brand, and added up what Ringo Light charges for its Vietnam and Hong Kong plans separately. For two weeks or more across both, I would buy the Ringo Light Asia plan.
One eSIM for Vietnam and Hong Kong, unlimited data at full speed, 2 weeks at $34.99 or 30 days at $59.99, nothing renews. Airalo asks $49 for 15 days and $73.50 for the month.
For a quick Hong Kong stopover on the way to or from Vietnam: 3 days of unlimited at $11.50, with 3 GB a day at full speed, then 1 Mbps.
For maps, ride-hailing and messages only: 10 GB for 30 days at $21 and 20 GB for 45 days at $35 (on sale, regular $40).
A week with 25 GB at full speed for $25, then 2 Mbps. 20 GB a month for $19, on a plan that renews until you cancel it.
Prices read on 25 October 2026: Airalo, Holafly, Saily, Nomad, Ubigi on their own sites or listings, Ringo Light from its catalogue. All in US dollars unless stated. Treat every number as a snapshot.
See the full price index for every country.
The prices, charted
Asia regional plans that cover both places, US dollars, 25 October 2026. Ringo Light sells 2 weeks, the others 15 days. Ubigi's 15 days is 30 GB at full speed, then 2 Mbps. Nomad sells no two-week unlimited; its longest is 10 days at $29.
The 30-day regional plan at each brand. Ubigi's month is 60 GB at full speed, then 2 Mbps. Nomad sells no 30-day unlimited.
Holafly sells no buckets. Ringo Light sells no bucket either: its 2 weeks is unlimited, so it lasts 2 weeks, not 30 days.
Side by side
Swipe to compare →
Get Ringo Light for Vietnam and Hong Kong, from $21.99.
Installed once, next to your own SIM. Your eSIM arrives by email in seconds.
- 7 days $21.99
- 2 weeks $34.99
- 30 days $59.99
- 90 days $73.99
We sell data eSIMs for now to fund the full Ringo service. Ringo is self funded. Every plan bought here pays for the build of one plan that works everywhere.
Want to keep your own number abroad?
That is the full Ringo service: one plan that works everywhere, with your own number included.
It is a separate product from Ringo Light and it is still being built, so it is not on sale yet. Join the waitlist to hear when it opens.
What to do in Vietnam and Hong Kong, and what your phone needs for it
Seven places a trip across Vietnam and Hong Kong often includes, with the one thing your data does for you at each. Both countries are on Ringo Light's Asia plan, so one eSIM works from the first stop to the last.
One plan for both countries: Ringo Light
Vietnam to Hong Kong is one flight, and a regional eSIM saves you the second install and the second payment. Two country eSIMs also mean a switch at the airport, in the queue for the bags. I would pick the one plan that is already live when the plane lands.
I read Ringo Light's Asia plan at $34.99 for 2 weeks and $59.99 for 30 days, and nothing renews. Across the rivals, two weeks of regional unlimited costs $45 at Ubigi for a fixed 30 GB at full speed, $49 at Airalo, $51.50 at Holafly and $54.99 at Saily. Their months run $66 to $86.99.
Adding up Ringo Light's own country plans makes the Asia plan look better. Vietnam's 2 weeks is $22.99 and Hong Kong's $26.99 on their own pages, $49.98 together, against $34.99 for the Asia trip that covers both. A month is the wider gap: Vietnam's 30 days is $42.99 and Hong Kong's $45.99, $88.98 together, against $59.99.
Two honest exceptions. A stay in Vietnam alone is cheaper on its own page, at $22.99 for 2 weeks. And Hong Kong's page sells 3 days of unlimited at $9.99, which the Asia plan does not.
Which plans cover both countries
Ringo Light covers both. Vietnam and Hong Kong are on its list of 20 countries, so one eSIM works in each, at the same price and with the same terms.
For the other five brands, the Asia post gives me country counts (Airalo 18, Holafly 16, Saily 22, Nomad 14, Ubigi 17) and a short list of what some leave out, with neither Vietnam nor Hong Kong on it. I did not confirm each country on each brand's own list that day. Read the list for the plan you choose before you pay.
Inside Hong Kong, Google, WhatsApp and Instagram work as they do at home. No Hong Kong plan goes past the border with Shenzhen, and none covers Macau across the water, so a trip that continues into mainland China wants a regional plan whose list includes it.
If you want a data bucket: Nomad or Airalo
- Nomad, $21 for 10 GB. The lowest 10 GB price on its 14-country APAC plan, with 20 GB for 45 days at $35 (on sale, regular $40).
- Airalo, $25 for 10 GB. Asialink, 18 countries. Its 20 GB for 30 days is $39, and a 1 GB bucket starts at $4.
- Ubigi, $28 for 10 GB. Best Asia, 17 countries. The 20 GB plan at $19 is monthly and renews until you cancel it.
- Saily, $35.99 for 10 GB. Asia and Oceania, 22 countries. I found no 20 GB bucket on its listing on 25 October 2026.
- ✓Ringo Light, no buckets. Its 2 weeks is unlimited at $34.99 and its 30 days unlimited at $59.99. Nomad and Airalo undercut it on a fixed 10 GB, and Nomad, Airalo and Ubigi's monthly plan undercut it on 20 GB. I would buy Ringo Light for unlimited, not for a bucket, and I would rather you read that here than at checkout.
What Ringo Light is
Ringo Light is Ringo's own data eSIM, and I write for Ringo, so keep that in mind. It is sold to fund the full Ringo, one plan that works everywhere with your own number ported onto it. For Asia it sells two trips across 20 countries, Vietnam and Hong Kong among them, both unlimited data at full speed: 2 weeks at $34.99 and 30 days at $59.99. Nothing renews. The eSIM arrives by email within seconds and installs in one scan, with no app.
The card to buy it is further up this page, just after the side-by-side table.
Pick by trip
I would read the Vietnam page. Ringo Light sells no week, and its Vietnam 2 weeks at $22.99 costs less than the Asia plan.
On its own page Ringo Light sells 3 days at $9.99. I would also look at Airalo unlimited, 3 days, $11.50, on the regional plan.
I would buy Ringo Light unlimited, 2 weeks, $34.99, less than any rival charges for two weeks on a regional plan.
I would buy Ringo Light unlimited, 30 days, $59.99.
I would buy Nomad 10 GB for 30 days at $21, if its 14 countries include both of yours.
No travel plan here does that. The full Ringo, which Ringo Light funds, ports the number you already have.
Frequently asked questions
How we compared, and our sources
Airalo, Holafly, Saily, Nomad, Ubigi, Ringo Light
We priced Airalo, Holafly, Saily, Nomad, Ubigi and Ringo Light for Vietnam and Hong Kong on 25 October 2026, all on the same day, in US dollars. Each rival's price comes from its own website where it showed dollars, otherwise from an esimdb.com listing, and every source and its date is listed below. Ringo Light's prices come from the catalogue our checkout charges.
We compare the trips people actually book: a week, two weeks and a month of unlimited data, and a 10 GB bucket. We read each brand's fair use and speed rules and quote them as the brands state them. We did not run speed tests, so this page makes no speed claims for any brand.
Ringo Light is our own product. We put it in the table on the same terms as everyone else, and where a rival is the better buy the page says so.
Left out: Maya Mobile. We could not read its own prices for this country on the day, so it stays out rather than being guessed.
- Airalo: www.airalo.com/asia-esim?currency=USD, Asialink unlimited, 18 countries and the 3 GB daily cap read on the site in dollars, 25 October 2026; 10 GB and 20 GB buckets from esimdb.com/vietnam/airalo, listing dated 4 October 2026
- Holafly: esim.holafly.com/esim-asia/, prices in dollars and the 16-country list on the site, 25 October 2026
- Saily: saily.com/esim-asia-and-oceania/, Asia and Oceania plans, prices in dollars on saily.com, read 25 October 2026
- Nomad: www.nomadesim.com/apac-esim, Regional APAC plans, prices in dollars from the page itself, read 25 October 2026; 20 GB for 45 days is on sale, $40 regular
- Ubigi: cellulardata.ubigi.com/rates-and-coverage/best-asia-data-plans/best-asia-unlimited-30-days/, Best Asia plan pages on cellulardata.ubigi.com, 25 October 2026: 7 days $25, 15 days $45, 30 days $66, 10 GB $28, 20 GB a month $19
- Ringo Light: our own catalogue, the prices the checkout charges on 25 October 2026.
Written and priced by the Ringo team. Prices change often; if you spot one that has moved, tell us through the contact page and we will update the table.
