Best eSIM for Vietnam 2026: 5 Providers Priced
Vietnam eSIM prices checked 27 Oct 2026: ONE eSIM is cheapest at 2 of 5 sizes from 1 to 20 GB, from $2.34 for 1 GB.
Short answer: ONE eSIM has the cheapest 1 GB eSIM for Vietnam at $2.34 for 7 days; the next cheapest is Saily at $3.99. Prices checked 27 October 2026 across ONE eSIM, Airalo, Holafly, Saily and Nomad; the full table is below.
Vietnam stretches from Hanoi in the north to Ho Chi Minh City in the south, with Ha Long Bay, Hoi An and the central coast in between, and most travellers want data working from the moment they land. An eSIM avoids the SIM counter queue at Noi Bai or Tan Son Nhat. Checked on 27 October 2026, ONE eSIM is the cheapest option for 1 GB and 3 GB Vietnam-only plans against Airalo, Holafly, Saily and Nomad, with validity that matches or beats each rival at those two sizes.
Quick answer: Vietnam eSIM prices by size
- 1 GB: ONE eSIM at $2.34 (7 days); next cheapest is Saily at $3.99 (7 days).
- 3 GB: ONE eSIM at $6.22 (15 days); next cheapest is Airalo at $7.50 (3 days).
- 5 GB: Airalo is cheapest at $10.00 (7 days); ONE eSIM is $10.37 (30 days). Best value: 4.3× the days of Airalo's plan for $0.37 more.
- 10 GB: Airalo is cheapest at $17.00 (7 days); ONE eSIM is $18.92 (30 days). Best value: 4.3× the days of Airalo's plan for $1.92 more.
- 20 GB: Nomad is cheapest at $25.00 (30 days); ONE eSIM is $34.73 (30 days).
Vietnam eSIM prices compared (1 GB to 20 GB)
| Data | ONE eSIM Our price | Airalo | Holafly | Saily | Nomad |
|---|---|---|---|---|---|
| 1 GB | $2.34 (7 days) Cheapest, saves $1.65 | $4.00 (3 days) | – | $3.99 (7 days) | $4.00 (7 days) |
| 3 GB | $6.22 (15 days) Cheapest, saves $1.28 | $7.50 (3 days) | – | $7.99 (30 days) | $8.00 (30 days) |
| 5 GB | $10.37 (30 days) Best value: 4.3× the days for $0.37 more | $10.00 (7 days) Cheapest | – | $10.99 (30 days) | $10.00 (30 days) |
| 10 GB | $18.92 (30 days) Best value: 4.3× the days for $1.92 more | $17.00 (7 days) Cheapest | – | $17.99 (30 days) | $17.00 (30 days) |
| 20 GB | $34.73 (30 days) | $28.00 (15 days) | – | $28.99 (30 days) | $25.00 (30 days) Cheapest |
Holafly sells only unlimited plans for Vietnam, so it has no price in the GB rows; its 7-day plan is in the week table below.
A week of unlimited data in Vietnam
| Provider | 7 days | What you get |
|---|---|---|
| ONE eSIM | $15.40 | 1 GB a day at full speed, then 1 Mbps until the next day (7 × $2.20) |
| Airalo | $27.00 | 3 GB a day at full speed, then 1 Mbps (fair use) |
| Holafly | $27.50 | No daily cap; fair use may slow very heavy use |
| Saily | $26.99 | 5 GB a day at full speed, then up to 1 Mbps |
| Nomad | – | No 7-day unlimited plan |
For a week, ONE eSIM's 1 GB a day plan is the cheapest way to stay online all day at $15.40. The cheapest of the others is Saily at $26.99, which gives more full-speed data a day; compare by how much you use a day, not by the word unlimited.
Networks and coverage in Vietnam
ONE eSIM's Vietnam plans run on Viettel Mobile, Vinaphone and MobiFone, all listed with 5G support, giving broad coverage from the northern mountains to the Mekong Delta.
Which eSIM should you choose for Vietnam?
- Short trip, light use (up to 3 GB): ONE eSIM's 3 GB plan at $6.22 (15 days), the cheapest at that size.
- Two weeks or more (5 to 10 GB): Airalo at $17.00 (7 days) is the cheapest at 10 GB; ONE eSIM is the best value (4.3× the days for $1.92 more).
- Heavy use (20 GB): Nomad at $25.00 (30 days) is the cheapest at 20 GB.
- Streaming or video calls every day: compare the unlimited plans above by how much full-speed data each gives a day.
How to set up your Vietnam eSIM
- Check your phone supports eSIM and is carrier-unlocked.
- Buy and install the eSIM on Wi-Fi before you fly.
- Turn on the new line and enable data roaming once you land in Vietnam, then disable data on your home SIM.
Vietnam eSIM FAQ
- Do I need an eSIM for Vietnam? No, but it is usually faster and cheaper than buying a physical SIM at the airport.
- Which network is best in Vietnam? Viettel Mobile generally has the widest rural and mountain coverage; Vinaphone and MobiFone are also strong in cities and along the coast.
- Is 3 GB enough for a short Vietnam trip? For normal maps, messaging and social media use over a week or two, yes, and its 15-day validity gives room to spread that data out.
- Can I use my eSIM to travel from Hanoi to Ho Chi Minh City? Yes, all three main networks cover the length of the country, including the main highway and rail routes.
How we check prices
We read each provider's public Vietnam page on 27 October 2026 and took its cheapest plan at or above each size, in US dollars before any coupon, with the validity in brackets; ONE eSIM prices are our live list prices on the same day. Prices move, so we re-check every month and keep the date on the page and in the short answer. If a number is out of date, write to support@oneesim.app and we will correct it.
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