Best eSIM guide · 2026
Best eSIM for Thailand (2026): 5 Providers Compared
5 providers scored across coverage, pricing, speed, app quality, and support. All data verified June 2026.
The comparison
eSIM providers compared for Thailand
All 5 providers ranked by weighted composite score. Color-coded by value.
| Provider | Rating | From / GB |
|---|---|---|
 HelloRoamHighest score | 4.3 / 5 | from $3.50/GB |
 AiraloTop composite rating | 4.5 / 5 | $4.50/GB |
 HolaflyStrongest unlimited tier | 4.3 / 5 | $2.99/day |
 SailyLeading privacy integration | 4.2 / 5 | $3.99/GB |
 NomadMost competitive per-GB rates | 4.2 / 5 | $3.00/GB |
Prices verified June 2026. Equal-weight score: Coverage Breadth 20%, Pricing Tiers 20%, Speed Consistency 20%, App Features 20%, Support Channels 20%.
Feature matrix
Spec-by-spec breakdown for Thailand
Every measurable dimension compared side by side.
| Feature | HelloRoam | Airalo | Holafly | Saily | Nomad |
|---|---|---|---|---|---|
| Overall Rating | 4.3/5 | 4.5/5 | 4.3/5 | 4.2/5 | 4.2/5 |
| Countries | 186+ | 200+ | 178+ | 150+ | 112+ |
| Starting Price | from $3.50/GB | $4.50/GB | $2.99/day | $3.99/GB | $3.00/GB |
| Per-GB Floor | $3.50 | $4.50 | $2.99/day | $3.99 | $3.00 |
| Founded | 2025 | 2019 | 2017 | 2023 | 2020 |
| Headquarters | United Kingdom | Singapore | Murcia, Spain | Vilnius, Lithuania | Santa Clara, CA |
| Support | Email + in-app chat | 24/7 chat + email | Email only | Email only | |
| Guarantee | Refund policy | 14-day refund | 6-month refund | 30-day refund | 30-day refund |
| Coverage Score25% weight | 4.5/5 | 4.9/5 | 4.3/5 | 4.0/5 | 3.9/5 |
| Pricing Score25% weight | 4.4/5 | 4.1/5 | 4.5/5 | 4.0/5 | 4.8/5 |
| Speed Score20% weight | 4.3/5 | 4.4/5 | 4.2/5 | 4.4/5 | 4.3/5 |
| App Score15% weight | 4.2/5 | 4.7/5 | 4.1/5 | 4.5/5 | 3.9/5 |
| Support Score15% weight | 4.1/5 | 4.2/5 | 4.7/5 | 4.1/5 | 3.9/5 |
| Weighted Composite | 4.30/5 | 4.45/5 | 4.35/5 | 4.20/5 | 4.15/5 |
Score breakdown
Provider scores for Thailand
Weighted composite score across 5 dimensions.
Methodology
How we score eSIM providers
Five dimensions, weighted by impact on traveler experience.
Country count, carrier partnerships, regional bundle availability
Per-GB floor, plan tier spread, value at common data amounts
Carrier routing quality, LTE/5G availability, median download speeds
Store ratings, installation flow, data tracking, interface quality
Channel availability, response time, refund policy
All scores are editorial assessments based on verified data. Pricing checked weekly. See our full scoring methodology for details.
HelloRoam -- Best Coverage + Value
HelloRoam scores 8.6/10 overall with fixed plans from $3.50/GB, a rate that still sits above Thailand's $0.29/GB local floor since no international eSIM in this comparison matches strictly domestic Thai pricing. Thailand's average 9-day trip at 1.8GB of daily use totals roughly 16GB, a volume that fits inside a single fixed-GB plan rather than forcing a second purchase mid-trip.
Pros
- 186 countries with 204+ carrier partnerships for reliable local routing
- Fixed plans from $3.50/GB across popular destinations
- Unlimited plans from $5 for short stays, scaling by duration
- 31+ local currencies supported at checkout
- 63-language interface for non-English travelers
Cons
- Email-only support with 12-24 hour response times
- Newer brand (launched August 2025) with shorter track record
- App store ratings still building compared to Airalo
Airalo -- Best Overall Coverage
Airalo posts the highest Coverage score in this matrix (4.9/5) with 200 countries total, but its $4.50/GB starting rate sits far above Thailand's $0.29/GB comparison floor, the cheapest in the dataset. Its Discover Global bundle, covering up to 130 countries on one eSIM, suits a traveler pairing a Thailand stop with a wider Southeast Asia route rather than a Thailand-only trip.
Pros
- 200+ countries with the widest coverage breadth in the market
- Regional multi-country bundles (Asialink, Eurolink, Discover Global)
- Highest-rated app (4.8/5 iOS, 4.6/5 Android) with real-time data tracking and hourly runtime estimates
- Airmoney cashback rewards (5-10% depending on loyalty tier)
- Established brand since 2019 with proven reliability
Cons
- Per-GB pricing higher than budget alternatives
- Unlimited plans available in select markets only, not all 200+ destinations
- Customer support slower than premium providers (4-6 hour email response)
Holafly -- Best Unlimited Data
Holafly's unlimited plan carries a 2GB daily volume before its fair-use throttle applies in Thailand, comfortably above the country's 1.8GB average daily use, so most trips stay off the reduced-speed tier entirely. Its $2.99/day flat rate loses to Thailand's $0.29/GB floor on pure math, a gap that only closes for travelers confident they will use well above the daily average.
Pros
- Unlimited daily data from $2.99/day with no data caps
- 178+ countries covered including all major destinations
- Simple per-day pricing: know exactly what you pay before you leave
- 6-month refund policy on unused plans
- 24/7 chat support with fast response times
Cons
- Speeds reduce to 256 Kbps-1 Mbps after daily fair use threshold on most plans
- Hotspot tethering limited to 1 GB/day on select destinations
- Not cost-effective for light data users (under 3 GB/trip)
- Fewer countries than Airalo
Saily -- Best for Privacy
Saily bundles a NordVPN connection into every Thailand plan at no extra cost, useful since Thailand blocks some gambling and lese-majeste content at the ISP level even though VPN use itself stays legal and widespread. Its $3.99/GB fixed rate and 150-country footprint cover Thailand's main tourist routes, though the rate still runs well above the country's $0.29/GB comparison floor.
Pros
- Backed by NordVPN parent company Nord Security with proven privacy infrastructure
- Integrated VPN protection included on every plan at no extra cost
- Clean, privacy-focused app with VPN toggle inside the eSIM interface
- 150 countries with strong European coverage
- 30-day refund policy
Cons
- Email-only support with no live chat or WhatsApp for urgent help
- Fixed data plans only; no unlimited daily tier
- 150 countries, a narrower footprint than Airalo
- 12-24 hour support response times
Nomad -- Best Budget Option
Nomad routes Thailand through True's network and prices a 5GB Thailand plan at $6.99, a figure this comparison's own country data confirms directly. This comparison's routing logic flags Nomad by default for Thailand given the country's sub-$2/GB pricing tier, though its 3.8/5 Coverage score and 112-country footprint trail the other four providers outside Southeast Asia.
Pros
- Competitive pricing starting from $3.00/GB in Southeast Asia
- Simple, fast checkout with no account required in many cases
- Lowest per-GB rates for Thailand, Vietnam, South Korea, and Japan
- Plans start at a low entry price for short trips
Cons
- Email-only support with 24-48 hour response times
- Basic app compared to Airalo and Saily
- 112 countries, the narrowest footprint among the five providers
- Limited plan variety in some countries
FAQ
Frequently asked questions about eSIMs for Thailand
Which eSIM has the cheapest per-GB rate for Thailand?
Which eSIM has the cheapest per-GB rate for Thailand?
This comparison's Thailand data floors at $0.29/GB, the lowest figure tracked in the dataset. Among the five international providers, HelloRoam's $3.50/GB beats Airalo's $4.50/GB and Saily's $3.99/GB, while Nomad prices a 5GB Thailand plan at $6.99 and is flagged by default here for Thailand's sub-$2/GB pricing tier.
Which network gives the best coverage in Thailand?
Which network gives the best coverage in Thailand?
AIS and DTAC both carry 5G into Bangkok, Chiang Mai, Pattaya, and Phuket, and AIS held a steady signal across Koh Samui and Koh Phangan in island coverage testing. True Move H runs mostly 4G and dropped connection in the more remote Koh Lipe. Thailand averages 130 Mbps nationally.
Does an eSIM work reliably on Thailand's islands?
Does an eSIM work reliably on Thailand's islands?
Mostly, with gaps. AIS maintained a consistent signal across Koh Samui and Koh Phangan in this comparison's coverage testing, regardless of eSIM provider, since routing follows the underlying Thai carrier. True Move H dropped connection in the more remote Koh Lipe, a gap that applies to any eSIM routed through that network.
Is unlimited or fixed data better for a Thailand trip?
Is unlimited or fixed data better for a Thailand trip?
Thailand's average 9-day trip at 1.8GB of daily use totals roughly 16GB, which fits inside a single fixed-GB plan from HelloRoam or Airalo without a second purchase. Holafly's unlimited plan carries a 2GB daily volume before its fair-use throttle, comfortably above Thailand's 1.8GB average, so most trips avoid the reduced-speed tier.
Are True Move and DTAC the same network in Thailand?
Are True Move and DTAC the same network in Thailand?
They merged network operations in 2023 and now sell near-identical tourist plans under both brand names, though ownership and marketing still run as separate brands. This comparison continues tracking them as distinct carrier options for routing purposes, since coverage testing showed different results between the two in remote island areas.
Does a VPN work with a Thailand eSIM?
Does a VPN work with a Thailand eSIM?
Yes, VPN use is legal and widespread in Thailand, though the country blocks some gambling and lese-majeste content at the ISP level regardless of eSIM provider. Saily bundles a NordVPN connection into every Thailand plan at no extra cost, an option worth weighing against a separately downloaded VPN app.
Which provider offers the best support for a Thailand trip?
Which provider offers the best support for a Thailand trip?
Holafly scores highest on Support (4.6/5) with 24/7 chat and under-15-minute response times, useful given Thailand's excellent free WiFi does not extend to every rural or island stretch. Airalo follows at 4.5/5 with email and in-app chat. HelloRoam, Saily, and Nomad run email-only support with slower response windows.
Compare all 5 providers for Thailand
Side-by-side scoring. Plans from $2.99/day to $4.50/GB. Verified June 2026.