Thailand eSIM Price Comparison: HelloRoam from $3.49 (2026)
HelloRoam is the top pick for Thailand: 5 GB for 30 days costs $6.99, against $7.00 at Airalo (prices checked 30 Oct 2026). HelloRoam answers support on live chat, WhatsApp, email at any hour, in the language you write in. Airalo lists 200+ destinations to the 185 HelloRoam sells.
HelloRoam, an eSIM platform, sells 5 fixed plan sizes for Thailand in its 29 Oct 2026 catalogue, checked against Airalo, Nomad, Saily and Holafly on 30 Oct 2026. An eSIM in Thailand attaches to AIS, DTAC, True Move or TrueMove H on 5G.
Cheapest plans ranked
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 | $4.99 | $1.66/GB | 30 days | |
| 5GB | $6.99 | $1.40/GB | 30 days | |
| 10GB | $9.97 | $1.00/GB | 30 days | |
| 20GB | $15.99 | $0.80/GB | 30 days |
Catalogue price against the lowest rival price
| Size | HelloRoam | Lowest rival |
|---|---|---|
| 1 GB | $3.49 | Saily is lower: $2.99 (7 days) |
| 3 GB | $4.99 | Below Airalo's $5.50 (3 days) |
| 5 GB | $6.99 | Below Airalo's $7.00 (7 days) |
| 10 GB | $9.97 | Below Airalo's $10.00 (7 days) |
| 20 GB | $15.99 | Below Airalo's $17.50 (15 days) |
HelloRoam has the lowest Thailand price at 3 GB, 5 GB, 10 GB, 20 GB. At 1 GB, Saily is lower at $2.99 against the catalogue's $3.49.
Unlimited daily plans
| Duration | Total Price | Per Day | Discount |
|---|---|---|---|
| 1 day | $3.71 | $3.71/day | 0% |
| 3 days | $10.57 | $3.52/day | 5% |
| 7 days | $22.85 | $3.26/day | 12% |
| 14 days | $41.55 | $2.97/day | 20% |
| 30 days | $75.68 | $2.52/day | 32% |
Each unlimited plan runs at high speed for 2 GB a day, then at a lower speed.
Nomad sells 7 days of unlimited data for $15.00 (2 GB a day at high speed), below the catalogue's $22.85 (read 30 Oct 2026). For unlimited data in Thailand, a rival was lower at 7, 15 and 30 days.
Which plan is cheapest right now
The lowest fixed-data Thailand price is the 1GB plan at $3.49 ($3.49/GB). Saily sells the same size for $2.99. Best per-GB value: 20GB at $15.99 ($0.80/GB). Unlimited beats fixed if you use more than 9.6 GB/day.
Cost per gigabyte across tiers
How per-GB cost changes with plan size. Bigger plans cost less per gigabyte.
Per-GB cost ladder
- 1GB: $3.49/GB
- 3GB: $1.66/GB52% cheaper
- 5GB: $1.40/GB60% cheaper
- 10GB: $1.00/GB71% cheaper
- 20GB: $0.80/GB77% cheaper
Volume discount math
Going from 1GB at $3.49/GB to 20GB at $0.80/GB cuts per-GB cost by 77%. On a 9-day trip using 1.5 GB/day, that saves $37.66 total.
Fixed vs unlimited value
The 20GB plan at $15.99 covers 14 days at 1.5 GB/day. Unlimited at $3.71/day costs $33.39 for 9 days. Unlimited wins above 9.6 GB/day.
How to save on Thailand data
Practical strategies to cut your Thailand data costs.
Right-size your plan
The cheapest way to stay connected for 9 days in Thailand: Light usage (0.5 GB/day) needs 5 GB. Moderate usage (1.5 GB/day) needs 14 GB. Heavy usage (3 GB/day) needs 27 GB. The 20GB plan at $15.99 covers moderate usage. Buy one tier above your estimate. Topping up costs more per GB.
Use WiFi to stretch your plan
WiFi in Thailand is excellent. Cafes, co-working spaces, and 7-Eleven stores all offer free WiFi across Thailand. Offload streaming and downloads to WiFi. A smaller plan can cover a full week when you use WiFi for heavy tasks.
Timing your purchase
Airport SIM counters charge 20-30% more than the same plans sold at 7-Eleven or carrier stores in the city. Peak season (Nov-Feb, Jul-Aug) 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.
What else costs money in Thailand
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 $15.99, saving $54.01 (77%).
Airport SIM markup
Airport SIM at Suvarnabhumi (BKK) / Don Mueang (DMK): $8-23 for unlimited data / 7-15 days. Queue time: 5-10 min; counters open 24 hours. eSIM: from $3.49 for 1GB with no queue, no SIM swap, instant delivery.
SIM registration and IMEI fees
Show your passport at the carrier counter and complete a biometric selfie check to register a local SIM. An eSIM skips this step.
Fair-use throttling on unlimited plans
The Thailand 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 $15.99 for actual cost-per-usable-GB.
Best deal right now
One plan, one provider, backed by the numbers.
The pick: 20GB at $15.99
For Thailand, our pick is HelloRoam's 20GB plan at $15.99 ($0.80/GB, valid 30 days). It covers 14 days at moderate usage, and an eSIM there attaches to AIS, DTAC, True Move or TrueMove H on 5G. At 20 GB it is also below Airalo's $17.50.
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Runner-up deal
Airalo sells 20 GB for Thailand at $17.50, valid 15 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 9.6 GB/day. The fixed 20GB plan saves $17.40 across 9 days.
Thailand eSIM price breakdown
Data costs in Thailand rank as budget-friendly on the global scale. At $0.80/GB, Thailand sits 75% below the global average of $3.20/GB. 4 carriers (AIS, DTAC, True Move) provide the underlying 5G infrastructure.
5 plan tiers are tracked for Thailand, from 1GB ($3.49, $3.49/GB) to 20GB ($15.99, $0.80/GB). The volume discount from smallest to best-value tier is 77%. The largest tier also delivers the best per-GB rate.
Unlimited data for Thailand is tracked at $3.71/day. Full 5G speed runs for 2GB per day before throttling. Multi-day commitments drop the daily rate: the 30-day plan runs $2.52/day (32% off). The crossover point sits at 4.6GB/day: below that, the 20GB fixed plan saves money; above it, unlimited wins.
A 7-Eleven SIM at 299 THB (about $8) delivers unlimited data for 8 days, which works out around 60% cheaper than most travel eSIM providers. Budget Thailand eSIM plans mostly route through AIS, which also leads on 5G coverage, so picking the lowest price still lands you on the best network.
Budget verdict: Thailand 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 Thailand trips
- Buy the 20GB tier instead of 1GB
The 1GB plan costs $3.49/GB. The 20GB plan drops to $0.80/GB. On 10GB of total usage, that saves $26.90. The upfront cost is higher ($15.99 vs $3.49), but the per-GB savings more than compensate if you use 50% or more of the plan's data.
Estimated savings: $2.69/GB, $26.90 on 10GB
- Use WiFi for heavy tasks in Thailand
WiFi in Thailand is rated excellent. Cafes, co-working spaces, and 7-Eleven stores all offer free WiFi across Thailand. 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 Suvarnabhumi (BKK) / Don Mueang (DMK) SIM counter
Airport SIM counters charge $8-23 for unlimited data / 7-15 days. Queue time: 5-10 min; counters open 24 hours. 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: 5-10 min; counters open 24 hours saved, potentially lower price
- Activate on arrival to maximize validity days
Most Thailand eSIM plans start counting from first connection to a AIS 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 Thailand 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 $15.99, 77% less. Go to Settings > Cellular > turn off Data Roaming on your home carrier line before your flight.
Estimated savings: $54.01 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 Thailand 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 Thailand trips
Buy the right plan size
The 20GB plan ($15.99) costs less per GB than 1GB in Thailand. Upgrade for better value.
Use WiFi when available
Thailand has excellent WiFi availability. Use hotel and cafe WiFi for downloads to stretch your eSIM data further.
Download offline maps
Download offline maps before arriving in Thailand. This saves significant mobile data on navigation.
How much data costs in Thailand by usage level
Average travelers use about 1.8GB of mobile data per day in Thailand. At that rate, a 7-day trip consumes roughly 12.6GB.
The 10GB plan at $9.97 ($1.00/GB) covers a full week of average use.
The cheapest option on Thailand trips, analysed
The entry plan in the Thailand catalogue is the 1GB plan at $3.49 ($3.49/GB).
For better value per gigabyte, the 20GB plan at $15.99 drops to $0.80/GB, saving $2.69 per GB over the entry plan.
Unlimited daily data costs $3.71/day. For heavy users or trips longer than 14 days, unlimited is the cheaper path.
Thailand trip cost by duration
Weekend trip (3 days): carrier roaming costs $30.00, eSIM costs about $6.99, saving $23.01 (77%).
One-week trip (7 days): carrier roaming costs $70.00, eSIM costs about $15.99, saving $54.01 (77%).
Two-week trip (14 days): carrier roaming costs $140.00, eSIM costs about $51.94, saving $88.06 (63%).
Provider value on Thailand 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 Thailand
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 Thailand only, the country plan's best rate is $0.80/GB. Add a regional plan only if you cross borders.
The cheapest eSIM on Thailand trips
HelloRoam is the top pick for Thailand: 3 GB for 30 days costs $4.99, against Saily $5.99 at the next store (prices read 30 Oct 2026).
HelloRoam runs its website and its app in 63 languages. Airalo lists 200+ destinations to the 185 HelloRoam sells. HelloRoam is the cheapest of the five for 5 GB / 30 days in Thailand: $6.99 (prices checked 30 Oct 2026). Saily sells 1 GB / 7 days for $2.99, below HelloRoam's $3.49 (prices read 30 Oct 2026). Nomad sells 50 GB / 30 days for $17.00, below HelloRoam's $48.00 (prices read 30 Oct 2026). Plans run on one of 3 local networks.
HelloRoam's cheapest Thailand plan is 1 GB at $3.49 for 7 days; 5 GB costs $6.99, or $1.40 per GB (catalogue of 29 Oct 2026).
Every size: 1 GB at $3.49 (7 days), 3 GB at $4.99 (30 days), 5 GB at $6.99 (30 days), 10 GB at $9.97 (30 days), 20 GB at $15.99 (30 days). All prices are pre-tax USD.
HelloRoam is the top pick for Thailand 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 Thailand for $15.99 on the 20 GB plan, against $70.00 at this site's $10/day roaming baseline, 77% 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 Thailand costs $15.99 on the top pick's 20 GB plan, against $70.00 at this site's $10/day roaming baseline.
Save 77% on a 7-day trip ($54) against the $10/day roaming baseline
HelloRoam sells unlimited data for Thailand from $3.71 for 1 day down to $2.52 a day on the 30-day plan (catalogue of 29 Oct 2026).
Each unlimited plan in Thailand includes 2 GB of high-speed data a day, then at a lower speed. Nomad sells unlimited for 7 days for $15.00, below HelloRoam's $22.85 (prices read 30 Oct 2026). Stay lengths: 1-day $3.71, 3-day $10.57, 7-day $22.85, 14-day $41.55, 30-day $75.68.
Thailand eSIM price summary
The cheapest Thailand eSIM costs $3.49 for 1GB.
Best value: 20GB at $0.80/GB.
Upgrade from 1GB to 20GB to save $2.69 per GB in Thailand. The larger plan costs $15.99 total but delivers better value per gigabyte.
Frequently asked questions
Can I see what a Thailand eSIM costs this year?
HelloRoam's fixed Thailand plans range from $3.49 (1GB) to $15.99 (20GB). The unlimited plan costs $3.71 for one day. All prices are in USD, from the 29 Oct 2026 catalogue.
Can I tell which Thailand eSIM plan gives most value?
The 20GB plan at $15.99 has the lowest Thailand rate, $0.80/GB. It covers 14 days at moderate usage (1.5 GB/day).
Can I save by sizing up a Thailand eSIM plan?
Yes. Per-GB cost drops 77% from 1GB ($3.49/GB) to 20GB ($0.80/GB). On a 9-day trip that saves $53.80 total.
Can I find promo codes on Thailand 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 Thailand 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 $15.99. Savings: $54.01 (77%).
Can an airport counter beat a Thailand eSIM on price?
SIM counters at Suvarnabhumi (BKK) / Don Mueang (DMK) typically charge $8-23 for unlimited data / 7-15 days with a 5-10 min; counters open 24 hours queue. An eSIM from $3.49 for 1GB installs before you fly, no queue, no SIM swap.
Can a Thailand 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 Thailand 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 Thailand plan beat several small ones?
One larger plan. The 20GB plan costs $0.80/GB. Buying 20 x 1GB plans costs $3.49/GB. One plan saves $2.69 per GB.
Detailed pricing questions on Thailand trips
What is the cheapest eSIM for Thailand 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 Thailand eSIM plan cost?
The largest tracked plan is 20GB at $15.99 ($0.80/GB). It is also the lowest rate per gigabyte on this ladder.
How often are Thailand eSIM prices updated?
Prices refresh when the site rebuilds from its tracked price feed. Each page shows the plans that feed lists for Thailand.