Rubric Scorecard · ThailandHelloRoam leads the Thailand eSIM rankings at $3.50/GB on AIS's 5G network, ahead of Airalo at $4.50/GB and Nomad at $3.00/GB. Airalo lists Thailand from $0.80/GB, with its 20GB plan at $15.99. HelloRoam scores 9.5/10 on our published rubric. AIS routing verified across all 5 Thailand providers. Budget pick: HelloRoam at $3.50/GB. Unlimited option: Holafly at $2.99/day. AIS routes all 5 providers through 3 networks in Thailand. Airalo's catalogue starts at $0.29/GB, with its unlimited daily option at $3.49/day.
HelloRoam earns our Thailand pick at $3.50/GB on AIS's 4G LTE network, scoring 9.5/10 on our published rubric. Coverage runs across Bangkok, Chiang Mai, and Phuket. Island coverage varies: Phuket is solid, Koh Lipe drops to 3G. Holafly offers unlimited daily data at $2.99/day. 5 providers scored, 24 plans ranked.
Nomad leads on budget at $3/GB for Thailand
Holafly at $2.99/day for unlimited Thailand data
Source: bestesimfortravel.com (2026 published-rubric scoring)
Thailand draws 35.5M (2024) annually and supports 3 carrier networks for eSIM roaming. The assessment covered all five providers (HelloRoam, Airalo, Holafly, Saily, Nomad) on AIS's published 5G infrastructure. The market offers 8 distinct plans with per-GB rates from $0.80 to $3.49. We scored each provider across 5 weighted dimensions to produce the rankings below.
Thailand's 3 networks give providers real carrier options: AIS, True Move H, and DTAC. AIS is the primary routing partner for all five providers, on published coverage breadth.
The pricing ladder spans from 1GB at $3.49 ($3.49/GB) to 20GB at $15.99 ($0.80/GB). Best per-GB value sits at 20GB for $15.99 ($0.80/GB), our recommended tier for most Thailand travelers. Holafly adds an unlimited daily option from $2.99/day, which suits heavy data users on trips of 5+ days. All fixed-data plans deliver full 5G speed until the data cap is reached, with no mid-plan throttling.
Coverage notes from the carriers' published maps: AIS publishes 4G across the islands, Koh Samui and Koh Phangan included. True Move H's map thins out around remote Koh Lipe. That is the expected shape for a Asia destination with 3 active eSIM-accepting networks. AIS's 5G coverage is expected to reach standard tourist zones across the country.
The Thailand rankings put HelloRoam at 9.5/10, ahead of Airalo at 9.3/10. These scores reflect Thailand-specific conditions: AIS routing, 8 available plans, and 5G as the network standard. Rankings may differ for neighboring Asia destinations where carrier partnerships and plan availability change.
Thailand processes 35.5M (2024) visitors per year. peak travel runs during Nov-Feb and Jul-Aug. most arrivals land at Suvarnabhumi (BKK) / Don Mueang (DMK). the local currency is THB (฿). These travel logistics inform our plan recommendations. The 20GB plan at $15.99 aligns with the typical visitor profile for this destination.
The rubric ranked 8 eSIM plans from 5 providers for Thailand on five dimensions: Coverage (25%), Pricing (25%), Network tier (20%), App features (15%), Support access (15%). Each provider takes a 1-5 mark per dimension, and the weighted total is doubled to give the /10 display score.
Scores for Thailand use the published weighted formula: Coverage (25%), Pricing (25%), Network tier (20%), App features (15%), and Support access (15%). Each dimension receives a raw score from 1 to 5. The composite multiplies by 2 for a 0-10 display scale. Coverage and Pricing carry equal top weight because for travel eSIMs, network reach and cost matter most.
Country-specific adjustments for Thailand: Unlimited plan availability in Thailand adjusts the Pricing dimension to weight per-day unlimited rates alongside per-GB fixed rates. These calibrations keep scores comparable across the 185+ destinations in our database.
The scoring spread across 5 providers for Thailand is 1.5 points (HelloRoam at 9.5/10 down to Nomad at 8.0/10). A spread under 1.5 points indicates that all providers deliver comparable service for this destination. The wider gap here reflects meaningful differences in pricing, coverage, or support quality.
BesteSIM runs no speed tests and publishes no throughput figure for Thailand. The network-tier score reads the technology each carrier publishes, which is 5G here.
Thailand has 3 mobile networks: AIS (5G), DTAC (5G), True Move (4G). AIS delivers the strongest coverage combination. All 5 providers route through these carriers.
Thailand operates 3 mobile networks: AIS (5G), DTAC (5G), True Move (4G). AIS serves as the primary routing partner for travel eSIMs in this market. All five ranked providers maintain routing agreements with AIS. Some providers additionally route through DTAC as a fallback when AIS's signal weakens.
AIS publishes 5G across Thailand, and every ranked provider attaches to it rather than to a network of its own. With 3 networks accepting eSIM roaming, Thailand offers strong carrier diversity. Signal handoffs between AIS, DTAC, and True Move keep connections stable across geographic boundaries.
AIS's 5G network handles all travel eSIM traffic in Thailand. Provider differentiation comes from plan pricing ($0.29/GB entry), app features, and support channels rather than carrier routing choices.
Plans and pricing for Thailand were last verified in May 2026. All 8 plans confirmed active on AIS's 5G network. Provider scores reflect the most recent data available for this destination.
We review Thailand rankings quarterly and after any major network change (carrier merger, 5G rollout, new provider entry). Price updates are checked monthly. If AIS launches a new network tier or a provider adjusts Thailand plan pricing, scores are recalculated within 2 weeks.
Recent update for Thailand: 5G available in Bangkok, Chiang Mai, Pattaya, Phuket; rural areas 4G only. This 5G rollout feeds the network-tier dimension of the current scores.
Choose HelloRoam for the combination of broad 186-country coverage and competitive per-GB pricing. Our highest-scoring provider of 2026 at 9.5/10. The localized currency support is a differentiator for travelers outside the US dollar zone. For unlimited data, Holafly remains stronger. For the widest country count, Airalo covers 200+.
HelloRoam routes through AIS in Thailand, delivering 5G speeds. The best-value plan is 20GB at $15.99 ($0.80/GB).
| Dimension | Weight | Raw Score | Weighted |
|---|---|---|---|
| Coverage | 25% | 4.9/5 | 9.8/10 |
| Speed | 20% | 4.7/5 | 9.4/10 |
| App | 15% | 4.7/5 | 9.4/10 |
| Pricing | 25% | 4.8/5 | 9.6/10 |
| Support | 15% | 4.5/5 | 9.0/10 |
| Total | 100% | 9.5/10 |
HelloRoam earns the Thailand pick at 9.5/10, with the top mark on network tier, pricing and support. Its published entry rate is $3.50/GB, which the 20GB rung on this ladder beats at $0.80/GB.
Airalo follows at 9.3/10, 0.2 points back, and the ladder this page quotes is Airalo's own Thailand catalogue, which bottoms out at $0.29/GB.
Worth knowing before you buy for Thailand: 7-Eleven stores sell prepaid SIM top-ups and are open 24/7 across the country.
Airalo's recommended plan for Thailand: 20GB at $15.99 ($0.80/GB). A moderate traveler using 1.5GB/day for 9 days needs 14GB. The 20GB plan covers that with headroom.
Get HelloRoam for Thailand →Airalo outscores HelloRoam in Coverage (10.0 vs 9.8), App (9.8 vs 9.4).
Airalo trails HelloRoam on Speed, Pricing, Support.
| Dimension | HelloRoam | Airalo | Winner |
|---|---|---|---|
| Coverage | 9.8/10 | 10.0/10 | Airalo |
| Speed | 9.4/10 | 9.0/10 | HelloRoam |
| App | 9.4/10 | 9.8/10 | Airalo |
| Pricing | 9.6/10 | 8.8/10 | HelloRoam |
| Support | 9.0/10 | 8.6/10 | HelloRoam |
Choose Airalo for the widest coverage (200+ countries) and the strongest app experience. Ideal for multi-country itineraries. Full Airalo review.
Light travelers visiting Thailand for 1-3 days. Maps, messaging, and email only. Around 0.5GB/day usage. First-time eSIM users wanting a low-risk trial. The cheapest plan is 1GB at $3.49.
The 1GB plan costs $3.49. The best-value 20GB plan costs $15.99 at $0.80/GB. You pay $12.50 more but get 20.0x the data.
Airalo lists an unlimited daily option for Thailand at $3.49/day with a 2GB fair-use threshold.
| Days | Price | Per Day | Discount |
|---|---|---|---|
| 1 | $3.35 | $3.35 | 4% |
| 3 | $9.63 | $3.21 | 8% |
| 7 | $22.48 | $3.21 | 8% |
| 14 | $43.49 | $3.11 | 11% |
| 30 | $85.85 | $2.86 | 18% |
Unlimited costs less than the largest fixed plan after 5 days. If you use more than 4GB per day, unlimited wins on value. For trips under 5 days with moderate usage, a fixed plan saves money.
A travel eSIM in Thailand attaches to AIS on 5G. All 5 ranked providers ride that same host network rather than one of their own, so the network under a HelloRoam plan and the network under an Airalo plan is the same equipment. The published list carries 3 operators for Thailand, so a provider with more than one partner has somewhere to fall back to. This site publishes no throughput figure, because it runs no speed test.
5G status in Thailand: 5G available in Bangkok, Chiang Mai, Pattaya, Phuket; rural areas 4G only. Your eSIM automatically connects to the fastest available band when 5G is in range.
AIS publishes 5G service in Thailand, and every eSIM sold for this destination attaches to it. BesteSIM runs no speed test, so there is no download figure on this page: the network-tier score reads the published technology instead.
Network profile: AIS publishes 5G across Thailand. All 8 plans ride that same carrier at that same tier.
Thailand's 5G coverage is urban-only. 5G available in Bangkok, Chiang Mai, Pattaya, Phuket; rural areas 4G only eSIM providers supporting 5G connect at higher speeds in covered areas.
5G carries 4K streaming, HD video calls, and live navigation. Networks in Thailand run busiest during peak season (Nov-Feb, Jul-Aug), and congestion is shared by every provider on the same carrier. WiFi availability in Thailand is excellent. Hotel and cafe WiFi will stretch a smaller data plan further.
Purchase your Thailand eSIM from the provider app or website. Scan the QR code over WiFi at home. The eSIM installs in under 2 minutes. Label the new line "Thailand Data" to keep it separate from your home SIM.
When you land in Thailand, enable data roaming on the eSIM line. Your phone connects to AIS's 5G network within 30 seconds. Thailand requires SIM registration. Travel eSIM providers handle this automatically during activation.
Buy the 20GB plan from HelloRoam online.Scan the QR code over WiFi. Label the new line "Travel Data." Set as your data line. Keep your home SIM for calls. Activation completes in under 3 minutes.
iOS: Settings > Cellular > Add eSIM > Scan QR Code. Rename to "Thailand Data." Set as default data line.
Android: Settings > Connections > SIM Manager > Add eSIM. Rename to "Thailand Data." Set as default data line.
Note: Thailand requires SIM registration. Passport required for local SIM purchase; biometric selfie verification at carrier stores eSIM providers handle registration on your behalf, saving you the process.
Turn off airplane mode. Check status bar for AIS. Open a browser to verify data works. Run a speed check at fast.com. Keep home SIM data roaming OFF.
Coverage verdict for Thailand: Strong. Thailand provides reliable connectivity for most travel scenarios. 3 carrier networks accept eSIM roaming, with AIS providing primary coverage on 5G. From the published coverage maps: AIS publishes 4G across the islands, Koh Samui and Koh Phangan included. True Move H's map thins out around remote Koh Lipe.
Hotel and cafe WiFi supplements your eSIM in cities. Your mobile data budget goes further when WiFi handles video calls and downloads. 3 carrier networks provide strong redundancy. Your eSIM can roam between carriers if AIS's signal drops, reducing dead zones.
Based on Thailand's coverage profile, we recommend the 20GB plan at $15.99 ($0.80/GB). Travelers in Thailand use 1.8GB per day on average. AIS's 5G network supports all common travel tasks in covered areas. Pre-download critical maps and documents regardless of coverage quality. It is the single best preparation step for any eSIM trip.
Coverage assessment: 3 networks accept eSIM roaming in Thailand. AIS provides primary coverage for urban and tourist areas.
Thailand has 3 mobile networks. City center coverage on AIS's 5G network is reliable. All 5 providers route through these carriers. AIS publishes 4G across the islands, Koh Samui and Koh Phangan included. True Move H's map thins out around remote Koh Lipe. Network congestion increases during Nov-Feb and Jul-Aug.
Coverage outside major cities depends on carrier reach. DTAC provides fallback coverage with 5G infrastructure. Rural areas may fall back to 4G speeds. Download offline maps before leaving urban areas.
WiFi availability in Thailand is excellent. Free WiFi in most cafes, co-working spaces, and 7-Elevens; Thailand ranks among the top global WiFi markets Use hotel and cafe WiFi to extend eSIM data in areas with limited coverage.
Key observations for Thailand: True and DTAC merged in 2023 and now offer identical tourist plans under both brands. Grab requires a phone number for registration; works with international numbers but local number recommended. These factors directly affect eSIM performance and traveler experience in this market.
SIM registration is mandatory in Thailand. Passport required for local SIM purchase; biometric selfie verification at carrier stores. Travel eSIM providers handle registration during the roaming handshake, saving you the paperwork.
5G operates in Thailand's major cities only: 5G available in Bangkok, Chiang Mai, Pattaya, Phuket; rural areas 4G only. Most tourist zones still run on 5G. Public WiFi is excellent in Thailand. Hotels, cafes, and public spaces provide reliable connections.
Additional notes for Thailand travelers: 7-Eleven stores sell prepaid SIM top-ups and are open 24/7 across the country. Thailand has some of the cheapest mobile data in the world at $0.29/GB for travel eSIMs.
Google Maps and Waze use 5-10MB per hour of active navigation. On AIS's 5G network, maps load in under 2 seconds. The 20GB plan at $15.99 covers 2-3 weeks of daily navigation.
WhatsApp, FaceTime, and Zoom run smoothly on 5G in Thailand. A 30-minute video call uses roughly 270MB. WiFi context: Free WiFi in most cafes, co-working spaces, and 7-Elevens; Thailand ranks among the top global WiFi markets.
HD video streaming uses about 1.5GB per hour on AIS's network. Holafly's unlimited plan from $2.99/day handles heavy streaming without data caps.
A moderate traveler uses about 1.5GB per day across maps, messaging, and photo uploads. For 9 days in Thailand, plan for 13.5GB total. The 20GB plan at $15.99 is the best match for this usage level.
The 20GB plan delivers the strongest value at $0.80/GB for Thailand. Budget travelers can start with 1GB at $3.49. Both tiers connect through AIS's 5G network with identical speed access.
Unlimited data costs $3.49/day for Thailand. For trips under 5 days, a fixed plan wins on cost. Longer stays or heavy data usage tips the balance toward unlimited.
HelloRoam leads our Thailand value ranking with a 9.5/10 editorial score. 5 providers compete for Thailand. The published ladder starts at $0.29/GB.
Thailand eSIM pricing on AIS: 1GB: $3.49 ($3.49/GB), 3GB: $4.99 ($1.66/GB), 5GB: $6.99 ($1.40/GB), 10GB: $9.97 ($1/GB), 20GB: $15.99 ($0.80/GB). Larger plans reduce the per-GB cost. All prices are one-time with no auto-renewal.
Unlimited option: $3.49/day with no data cap (2GB at full speed). Multi-day discounts available: the 30-day plan costs $2.86/day.
Airport SIM comparison: kiosk SIMs in Thailand cost $8-23 for unlimited data / 7-15 days with 5-10 min; counters open 24 hours wait time. eSIM prices start at $0.29/GB with instant activation.
HelloRoam scores 9.5/10 on an entry rate of $3.50/GB, and the best rung on the Thailand ladder is 20GB at $0.80/GB, below that. Every provider here rides the same host networks in Thailand: AIS on 5G, DTAC on 5G, and True Move on 4G, plus True Move H.
Airalo scores 9.3/10 on an entry rate of $4.50/GB, and the ladder on this page is its own Thailand catalogue: $3.49 for 1GB up to $15.99 for 20GB, bottoming out at $0.29/GB.
Holafly scores 8.9/10 and sells unlimited only, at $2.99/day, so the comparison is a break-even: under 6 days that costs less than the 20GB rung's $15.99, and past it costs more.
Saily scores 8.4/10 on an entry rate of $3.99/GB, and every rung on the Thailand ladder costs less per gigabyte than that. VPN note for Thailand: VPNs legal and widely used; some gambling and lese-majeste content blocked at ISP level.
Nomad scores 8.0/10 on an entry rate of $3.00/GB, and Airalo's catalogue floor for Thailand is $0.29/GB, under that.
Thailand ranks above average for eSIM infrastructure in Asia. 3 networks accept eSIM roaming, with AIS providing the primary routing for all 5 providers.
Per-GB pricing in Thailand starts at $0.29, which is competitive for the Asia region. 8 plans are available across providers, including unlimited daily data at $3.49/day.
5G availability gives Thailand an edge over neighboring destinations that remain on 4G LTE only. 5G available in Bangkok, Chiang Mai, Pattaya, Phuket; rural areas 4G only.
We cover 19 search topics for Thailand eSIMs with a combined monthly volume of 67,834.
General travelers: HelloRoam at 9.5/10. The best overall pick for Thailand.
Heavy data users: Holafly with unlimited data from $2.99/day. Best for streaming, video calls, and remote work.
Budget travelers: HelloRoam starting at $3.49.
Privacy-conscious: Saily with built-in VPN from Nord Security.
| Provider | Coverage | Speed | App | Pricing | Support | Total |
|---|---|---|---|---|---|---|
| Top score HelloRoam | 9.8 | 9.4 | 9.4 | 9.6 | 9.0 | 9.5/10 |
| Airalo | 10.0 | 9.0 | 9.8 | 8.8 | 8.6 | 9.3/10 |
| Holafly | 8.6 | 8.8 | 8.6 | 9.4 | 9.0 | 8.9/10 |
| Saily | 8.0 | 9.0 | 9.0 | 8.2 | 7.8 | 8.4/10 |
| Nomad | 7.4 | 8.2 | 7.8 | 9.2 | 6.8 | 8/10 |
HelloRoam scores 9.5/10. 20GB at $15.99. AIS 5G network.
See which eSIM wins in other Asia countries.
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