Vietnam eSIM Price Comparison: 5 Plans from $3.49 (2026)
HelloRoam is the top pick for Vietnam: 1 GB for 7 days costs $3.49, against $3.99 at Saily (prices checked 30 Oct 2026). HelloRoam and Holafly both hold a 180-day refund window on unactivated plans; Nomad and Saily hold 30 days and Airalo 14. Airalo lists 200+ destinations to the 185 HelloRoam sells.
HelloRoam, an eSIM platform, sells 5 fixed plan sizes for Vietnam in its 29 Oct 2026 catalogue, checked against Airalo, Nomad, Saily and Holafly on 30 Oct 2026. Vietnam plans run on 5G on MobiFone, Viettel Mobile or Vinaphone.
Vietnam eSIM plans sorted by price
5 plans, sorted by total price. The green row is the lowest entry price.
Fixed data plans by tier
| Tier | Price | Per GB | Validity | Status |
|---|---|---|---|---|
| 1GB | $3.49 | $3.49/GB | 7 days | Lowest price |
| 3GB | $7.49 | $2.50/GB | 30 days | |
| 5GB | $11.09 | $2.22/GB | 30 days | |
| 10GB | $19.31 | $1.93/GB | 30 days | |
| 20GB | $27.49 | $1.37/GB | 30 days |
Catalogue price against the lowest rival price
| Size | HelloRoam | Lowest rival |
|---|---|---|
| 1 GB | $3.49 | Below Saily's $3.99 (7 days) |
| 3 GB | $7.49 | Below Airalo's $7.50 (3 days) |
| 5 GB | $11.09 | Airalo is lower: $10.00 (7 days) |
| 10 GB | $19.31 | Airalo is lower: $17.00 (7 days) |
| 20 GB | $27.49 | Nomad is lower: $25.00 (30 days) |
HelloRoam has the lowest Vietnam price at 1 GB, 3 GB. At 5 GB, Airalo is lower at $10.00 against the catalogue's $11.09. At 10 GB, Airalo is lower at $17.00 against the catalogue's $19.31. At 20 GB, Nomad is lower at $25.00 against the catalogue's $27.49.
Unlimited daily plans
| Duration | Total Price | Per Day | Discount |
|---|---|---|---|
| 1 day | $4.43 | $4.43/day | 0% |
| 3 days | $12.63 | $4.21/day | 5% |
| 7 days | $27.29 | $3.90/day | 12% |
| 14 days | $49.62 | $3.54/day | 20% |
| 30 days | $90.37 | $3.01/day | 32% |
Each unlimited plan runs at high speed for 2 GB a day, then at a lower speed.
Saily sells 7 days of unlimited data for $26.99 (5 GB a day at high speed), below the catalogue's $27.29 (read 30 Oct 2026). For unlimited data in Vietnam, a rival was lower at 7, 15 and 30 days.
Which plan is cheapest right now
The lowest fixed-data Vietnam price is the 1GB plan at $3.49 ($3.49/GB). Best per-GB value: 20GB at $27.49 ($1.37/GB). Unlimited beats fixed if you use more than 15.5 GB/day.
Vietnam per-GB cost ladder
How per-GB cost changes with plan size. Bigger plans cost less per gigabyte.
Per-GB cost ladder
- 1GB: $3.49/GB
- 3GB: $2.50/GB28% cheaper
- 5GB: $2.22/GB36% cheaper
- 10GB: $1.93/GB45% cheaper
- 20GB: $1.37/GB61% cheaper
Volume discount math
Going from 1GB at $3.49/GB to 20GB at $1.37/GB cuts per-GB cost by 61%. On a 8-day trip using 1.5 GB/day, that saves $25.44 total.
Fixed vs unlimited value
The 20GB plan at $27.49 covers 14 days at 1.5 GB/day. Unlimited at $4.43/day costs $35.44 for 8 days. Unlimited wins above 15.5 GB/day.
Budget tips for Vietnam
Practical strategies to cut your Vietnam data costs.
Right-size your plan
At moderate usage (1.5 GB/day), a 8-day trip needs 12 GB. Light usage (0.5 GB/day) needs 4 GB. Moderate usage (1.5 GB/day) needs 12 GB. Heavy usage (3 GB/day) needs 24 GB. The 20GB plan at $27.49 covers moderate usage. Buy one tier above your estimate. Topping up costs more per GB.
Use WiFi to stretch your plan
WiFi in Vietnam is good. Cafes and hotels in tourist areas almost all offer free WiFi; Vietnam attracts a large digital nomad crowd and the infrastructure reflects that. Offload streaming and downloads to WiFi. A smaller plan can cover a full week when you use WiFi for heavy tasks.
Timing your purchase
Vietnam sits among the cheapest mobile data markets in the world and prices stay flat throughout the year. Peak season (Oct-Apr) means heavier network use. Buy a tier up during peak months to avoid mid-trip top-ups.
Promo codes and discounts
The top pick publishes no standing discount code, so the prices above are the prices you pay. Airalo's ALOHA code takes up to $5 offa first Airalo purchase, on Airalo's own prices. See our full promo codes list for all active deals.
Fees and charges beyond the sticker price
Non-obvious expenses that inflate your total trip data cost.
Carrier roaming vs eSIM
This site compares every destination against a $10/day roaming baseline, so a 7-day trip runs $70.00. The lowest catalogue price for the same week is $27.49, saving $42.51 (61%).
Airport SIM markup
Airport SIM at Tan Son Nhat (SGN) / Noi Bai (HAN): $5-15 for 6-20GB / 15-30 days. Queue time: 10-15 min. eSIM: from $3.49 for 1GB with no queue, no SIM swap, instant delivery.
SIM registration and IMEI fees
Present your passport and complete real-name registration at the counter; this became mandatory in 2018 for all carriers. An eSIM skips this step.
Fair-use throttling on unlimited plans
The Vietnam unlimited plan runs at full speed for 2 GB a day. After that, speed drops for the rest of the day. Messaging still works. Streaming usually does not. If you stream video, 2 GB is your real daily cap. Compare that against a 20GB fixed plan at $27.49 for actual cost-per-usable-GB.
The smartest buy for Vietnam right now
One plan, one provider, backed by the numbers.
The pick: 20GB at $27.49
For Vietnam, our pick is HelloRoam's 20GB plan at $27.49 ($1.37/GB, valid 30 days). It covers 14 days at moderate usage, and an eSIM there attaches to MobiFone, Viettel Mobile or Vinaphone on 5G. On price alone, Nomad is lower at $25.00.
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Runner-up deal
Nomad sells 20 GB for Vietnam at $25.00, valid 30 days (read 30 Oct 2026).
When to skip the deal
Skip the 20GB plan if your trip exceeds 14 days. At that point, a larger tier or unlimited is cheaper per day. Skip unlimited if you use less than 15.5 GB/day. The fixed 20GB plan saves $7.95 across 8 days.
Vietnam eSIM price breakdown
Vietnam falls into the budget-friendly category for eSIM data. At $1.37/GB, Vietnam sits 57% below the global average of $3.20/GB. 3 carriers (MobiFone, Viettel Mobile, Vinaphone) provide the underlying 5G infrastructure.
5 plan tiers are tracked for Vietnam, from 1GB ($3.49, $3.49/GB) to 20GB ($27.49, $1.37/GB). The volume discount from smallest to best-value tier is 61%. The largest tier also delivers the best per-GB rate.
Unlimited data for Vietnam is tracked at $4.43/day. Full 5G speed runs for 2GB per day before throttling. Multi-day commitments drop the daily rate: the 30-day plan runs $3.01/day (32% off). The crossover point sits at 3.2GB/day: below that, the 20GB fixed plan saves money; above it, unlimited wins.
A Viettel SIM costs about $3 for 6GB over 30 days, which undercuts most travel eSIM providers by a wide margin, though the registration process takes extra time. Viettel reaches the remote northern mountains where both Vinaphone and Mobifone lose signal, so it is the practical first choice for off-the-beaten-track trips.
Budget verdict: Vietnam is a great-value eSIM destination. Data costs are low enough that even over-buying a tier wastes only a few dollars.
Cost-saving strategies on Vietnam trips
- Buy the 20GB tier instead of 1GB
The 1GB plan costs $3.49/GB. The 20GB plan drops to $1.37/GB. On 10GB of total usage, that saves $21.20. The upfront cost is higher ($27.49 vs $3.49), but the per-GB savings more than compensate if you use 50% or more of the plan's data.
Estimated savings: $2.12/GB, $21.20 on 10GB
- Use WiFi for heavy tasks in Vietnam
WiFi in Vietnam is rated good. Cafes and hotels in tourist areas almost all offer free WiFi; Vietnam attracts a large digital nomad crowd and the infrastructure reflects that. Download maps, sync photos, and stream video on WiFi. Reserve cellular data for outdoor navigation and messaging. This lets you buy a smaller, cheaper eSIM plan that covers only your outdoor data needs.
Estimated savings: 30-50% reduction in data consumption
- Skip the Tan Son Nhat (SGN) / Noi Bai (HAN) SIM counter
Airport SIM counters charge $5-15 for 6-20GB / 15-30 days. Queue time: 10-15 min. A travel eSIM starts at $3.49 for 1GB with zero queue. Install before departure and connect on landing. The saved queue time means more time at your destination and less at a kiosk.
Estimated savings: 10-15 min saved, potentially lower price
- Activate on arrival to maximize validity days
Most Vietnam eSIM plans start counting from first connection to a MobiFone tower. Install the eSIM at home over WiFi, but keep the cellular line disabled until you land. Activating a 7-day plan 2 days early wastes 2 days of validity. Every day of your plan should align with actual travel days.
Estimated savings: 0-2 extra valid days per plan
- Turn off carrier data roaming before departure
This site compares Vietnam against a $10/day roaming baseline. Forgetting to disable roaming costs $70.00 for a week of accidental data use. A plan covering the same week costs $27.49, 61% less. Go to Settings > Cellular > turn off Data Roaming on your home carrier line before your flight.
Estimated savings: $42.51 per 7-day trip
- Consider Asialink bundle for multi-stop Asia trips
Airalo's Asialink regional bundle covers 16 Asian countries on a single eSIM from $5.00 (1GB). If Vietnam is one of 2+ stops in Asia, compare the bundle price vs buying individual plans at $3.49 each. The bundle typically saves money from the third destination onward. One eSIM, one purchase, multiple countries.
Estimated savings: Varies; typically saves from 3+ countries
Budget data on Vietnam trips
Buy the right plan size
The 20GB plan ($27.49) costs less per GB than 1GB in Vietnam. Upgrade for better value.
Use WiFi when available
Vietnam has good WiFi availability. Use hotel and cafe WiFi for downloads to stretch your eSIM data further.
Download offline maps
Download offline maps before arriving in Vietnam. This saves significant mobile data on navigation.
How much data costs in Vietnam by usage level
Average travelers use about 1.2GB of mobile data per day in Vietnam. At that rate, a 7-day trip consumes roughly 8.4GB.
The 10GB plan at $19.31 ($1.93/GB) covers a full week of average use.
The cheapest option on Vietnam trips, analysed
The entry plan in the Vietnam catalogue is the 1GB plan at $3.49 ($3.49/GB).
For better value per gigabyte, the 20GB plan at $27.49 drops to $1.37/GB, saving $2.12 per GB over the entry plan.
Unlimited daily data costs $4.43/day. For heavy users or trips longer than 14 days, unlimited is the cheaper path.
Vietnam trip cost by duration
Weekend trip (3 days): carrier roaming costs $30.00, eSIM costs about $11.09, saving $18.91 (63%).
One-week trip (7 days): carrier roaming costs $70.00, eSIM costs about $27.49, saving $42.51 (61%).
Two-week trip (14 days): carrier roaming costs $140.00, eSIM costs about $62.02, saving $77.98 (56%).
Provider value on Vietnam trips
HelloRoam ranks first of the 5 providers on this site's published rubric at 8.3/10, ahead of Holafly (7.5), Nomad (6.1), Saily (6.1), Airalo (5.3). The rubric weighs price per GB, refund window, checkout currencies, destinations and support channels.
The lead comes from a 180-day refund window on unactivated eSIMs, checkout in 31 currencies through Stripe with Apple Pay and Google Pay, and a website and app in 63 languages.
Multi-country routing that takes in Vietnam
If visiting multiple countries in Asia, consider Airalo's Asialink regional plan. A single plan covering multiple destinations is often cheaper than separate per-country plans.
For Vietnam only, the country plan's best rate is $1.37/GB. Add a regional plan only if you cross borders.
The cheapest eSIM on Vietnam trips
HelloRoam is the top pick for Vietnam: 1 GB for 7 days costs $3.49, against Saily $3.99 at the next store (prices read 30 Oct 2026).
HelloRoam bills checkout in 31 currencies through Stripe, with Apple Pay and Google Pay on its website and in its app. Airalo lists 200+ destinations to the 185 HelloRoam sells. HelloRoam is the cheapest of the five for 3 GB / 30 days in Vietnam: $7.49 (prices checked 30 Oct 2026). Nomad sells 5 GB / 30 days for $10.00, below HelloRoam's $11.09 (prices read 30 Oct 2026). Nomad sells 10 GB / 30 days for $17.00, below HelloRoam's $19.31 (prices read 30 Oct 2026). Plans run on one of 2 local networks.
HelloRoam's cheapest Vietnam plan is 1 GB at $3.49 for 7 days; 5 GB costs $11.09, or $2.22 per GB (catalogue of 29 Oct 2026).
Every size: 1 GB at $3.49 (7 days), 3 GB at $7.49 (30 days), 5 GB at $11.09 (30 days), 10 GB at $19.31 (30 days), 20 GB at $27.49 (30 days). All prices are pre-tax USD.
HelloRoam is the top pick for Vietnam on this site's true-cost score, 8.3 out of 10 against 7.5 for Holafly.
HelloRoam bills checkout in 31 currencies through Stripe, with Apple Pay and Google Pay on its website and in its app. Airalo lists 200+ destinations to the 185 HelloRoam sells.
Yes. HelloRoam covers a week of data in Vietnam for $27.49 on the 20 GB plan, against $70.00 at this site's $10/day roaming baseline, 61% less.
The $10/day baseline is a site reference, not a carrier price: the AT&T International Day Pass costs $12/day. eSIM plans are prepaid, so there are no overage charges.
A full week at 1.5 GB a day in Vietnam costs $27.49 on the top pick's 20 GB plan, against $70.00 at this site's $10/day roaming baseline.
Save 61% on a 7-day trip ($43) against the $10/day roaming baseline
HelloRoam sells unlimited data for Vietnam from $4.43 for 1 day down to $3.01 a day on the 30-day plan (catalogue of 29 Oct 2026).
Each unlimited plan in Vietnam includes 2 GB of high-speed data a day, then at a lower speed. Saily sells unlimited for 7 days for $26.99, below HelloRoam's $27.29 (prices read 30 Oct 2026). Stay lengths: 1-day $4.43, 3-day $12.63, 7-day $27.29, 14-day $49.62, 30-day $90.37.
Vietnam eSIM price summary
The cheapest Vietnam eSIM costs $3.49 for 1GB.
Best value: 20GB at $1.37/GB.
Upgrade from 1GB to 20GB to save $2.12 per GB in Vietnam. The larger plan costs $27.49 total but delivers better value per gigabyte.
Vietnam eSIM pricing FAQ
Can I see what a Vietnam eSIM costs this year?
HelloRoam's fixed Vietnam plans range from $3.49 (1GB) to $27.49 (20GB). The unlimited plan costs $4.43 for one day. All prices are in USD, from the 29 Oct 2026 catalogue.
Can I tell which Vietnam eSIM plan gives most value?
The 20GB plan at $27.49 has the lowest Vietnam rate, $1.37/GB. It covers 14 days at moderate usage (1.5 GB/day).
Can I save by sizing up a Vietnam eSIM plan?
Yes. Per-GB cost drops 61% from 1GB ($3.49/GB) to 20GB ($1.37/GB). On a 8-day trip that saves $42.40 total.
Can I find promo codes on Vietnam eSIM plans?
The top pick publishes no standing discount code, so the prices on this page are what you pay. Airalo's ALOHA code takes up to $5 off a first purchase. Holafly's partner link takes 5% off. Saily's seasonal sales run up to 10% off select plans. Nomad's monthly flash sales run up to 20% off on select regions. Each one applies to that provider's own prices.
Can a Vietnam eSIM beat carrier roaming, and by how much?
This site compares against a $10/day roaming baseline, so 7 days costs $70.00. The lowest catalogue price for the same week is $27.49. Savings: $42.51 (61%).
Can an airport counter beat a Vietnam eSIM on price?
SIM counters at Tan Son Nhat (SGN) / Noi Bai (HAN) typically charge $5-15 for 6-20GB / 15-30 days with a 10-15 min queue. An eSIM from $3.49 for 1GB installs before you fly, no queue, no SIM swap.
Can a Vietnam eSIM carry fees the headline price hides?
No hidden fees on eSIM plans. The price you see is the price you pay. Physical SIMs in Vietnam require registration. An eSIM bypasses this. The unlimited plan slows after 2 GB of high-speed data a day. Carrier roaming at $10/day is the hidden cost an eSIM eliminates.
Can one large Vietnam plan beat several small ones?
One larger plan. The 20GB plan costs $1.37/GB. Buying 20 x 1GB plans costs $3.49/GB. One plan saves $2.12 per GB.
Detailed pricing questions on Vietnam trips
What is the cheapest eSIM for Vietnam right now?
The cheapest tracked plan is 1GB at $3.49 ($3.49/GB), from the tracked price list in this site's data file.
How much does a large Vietnam eSIM plan cost?
The largest tracked plan is 20GB at $27.49 ($1.37/GB). It is also the lowest rate per gigabyte on this ladder.
How often are Vietnam eSIM prices updated?
Prices refresh when the site rebuilds from its tracked price feed. Each page shows the plans that feed lists for Vietnam.