Best eSIM for Thailand (2026): 7 providers compared

For most trips to Thailand, the cheapest data plan we found is Thai Simcard at $7.99 for 10GB over 30 days, and it is also cheapest at 5GB ($5.49) and 20GB ($12.49). If you want a daily "unlimited" plan for a week, Nomad is cheapest at $15.00 (2GB a day at full speed), Maya Mobile gives the most full-speed data at $19.99 (5GB a day), and Holafly at $27.50 is the only one without a stated daily cap. All of them run on AIS or the merged True and dtac network.

How we compared: we took each provider's prices from its own website on 13 November 2026 and lined up the plan closest to 5GB, 10GB and 20GB, plus the cheapest 7-day "unlimited" or daily plan. We also noted which Thai network each one uses. Saily blocked our automated check, so its prices are marked "not checked". Thai Simcard is our own brand. We list it with the same numbers as everyone else, and we say where it loses.

7 eSIMs for Thailand compared (November 2026)

Provider	Cheapest plan	~5GB	~10GB	~20GB	Unlimited or daily (about 7 days)	Networks
Thai Simcard	1GB / 7 days: $1.99	$5.49 (5GB, 30d)	$7.99 (10GB, 30d)	$12.49 (20GB, 30d)	$17.99 / 7 days (3GB a day, then 1 Mbps)	TrueMove H, DTAC, True Move, AIS
Airalo	1GB / 3 days: $4.00	$7.00 (5GB, 7d)	$10.00 (10GB, 7d)	$17.50 (20GB, 15d)	$21.00 / 7 days (5GB a day at full speed, then 1 Mbps)	dtac, Advanced Wireless Network Company Limited, True Move H Universal Communication Co., Ltd.
Holafly	-	-	-	-	$27.50 / 7 days	True, DTAC
Nomad	1GB / 7 days: $5.00	$8.00 (5GB, 30d)	$10.00 (10GB, 30d)	-	$15.00 / 7 days (2GB a day at full speed, then 1 Mbps)	True, AIS
Ubigi	1GB / 7 days: $3.00	$5.00 (3GB, 15d)	$9.00 (10GB, 7d)	$24.90 (25GB, 30d)	$22.00 / 7 days (25GB at full speed, then 2 Mbps)	AIS, True Move
Maya Mobile	-	-	-	-	$19.99 / 7 days (5GB a day at full speed, then 3 Mbps)	AIS
Saily	not checked	not checked	not checked	not checked	not checked	not checked

Price per GB at about 10GB: Thai Simcard 80 cents, Ubigi 90 cents, Airalo and Nomad one dollar. Note that Airalo's and Ubigi's 10GB plans last 7 days, while Thai Simcard's and Nomad's last 30 days.

Best for each need

Thai Simcard: best for cheap fixed data

Thai Simcard is the cheapest in the table at every fixed size: $5.49 for 5GB, $7.99 for 10GB and $12.49 for 20GB, all valid 30 days. It connects to AIS and to True/dtac, so you are not tied to one network. The cheapest entry plan is 1GB for 7 days at $1.99. Its limitation is the daily plans: the 3GB-a-day week costs $17.99 and drops to 1 Mbps after 3GB, which is more than Nomad's $15.00 week and less full-speed data than Maya's 5GB a day. See the Thailand eSIM plans.

Nomad: cheapest capped unlimited week

Nomad's 7-day plan costs $15.00 and gives 2GB a day at full speed, then 1 Mbps. That is the lowest daily-plan price in the table. Its 10GB plan is $10.00 for 30 days, which suits a two-week trip. It uses True and AIS. The limit is the 2GB daily cap: one long video call or a few hours of maps and streaming can use that up. Nomad Thailand.

Maya Mobile: most daily data for the price

Maya Mobile charges $19.99 for 7 days with 5GB a day at full speed, then 3 Mbps. That is the same daily cap as Airalo for about a dollar less, more than Nomad's 2GB, and 3 Mbps after the cap is still usable for maps and messages. It runs on AIS only. Maya sells one global plan at the same price in every country it covers, so it is not tuned for Thailand. Maya Mobile Thailand.

Airalo: widest choice of plan lengths

Airalo has plans from 3 days up, and its 7-day "unlimited" plan costs $21.00 with 5GB a day at full speed, then 1 Mbps. Its 10GB plan is $10.00 but lasts only 7 days, so it is a short-trip option. Networks are dtac, AIS (listed under its company name, Advanced Wireless Network) and True. Airalo Thailand.

Holafly: unlimited without a stated daily cap

Holafly costs $27.50 for 7 days, the most in the table for a week. It is the only option with no stated daily full-speed cap, though Holafly says operators can apply a fair-use slowdown for up to one day, and hotspot sharing is limited to 1GB a day. It uses True and dtac. Holafly Thailand.

Ubigi: a big allowance on a 7-day plan

Ubigi's 7-day plan costs $22.00 for 25GB at full speed, then 2 Mbps. Its 10GB plan is $9.00 for 7 days, second cheapest per GB. It uses AIS and True. Its 20GB-class plan is $24.90 for 25GB, far more than Thai Simcard's 20GB. Ubigi plans.

Saily

Saily appears in many Thailand roundups, but its site blocked our price check, so we could not compare its prices today.

AIS or True/dtac: which network matters where

Thailand now has two big mobile groups. True and dtac completed their combined network in 2026, so "True" and "dtac" on an eSIM label mostly mean the same towers. AIS is the other one.

• Coverage: In Opensignal's June 2025 report, as summarised by Unusual Nomad, AIS scored 8.5 out of 10 for Coverage Experience against 7.4 for both dtac and TrueMove H.
• Latest results: Opensignal's August 2026 report (data April to June 2026) gave AIS the most awards, while True and dtac shared the Best Network title on their combined network.
• In practice: both are strong in Bangkok, Phuket, Pattaya and Chiang Mai. Traveler testing leans to AIS for the northern mountain roads (Pai, Mae Hong Son) and smaller islands. Opensignal results are national averages and do not guarantee signal at a given beach or pier.

If you will spend time far from cities, an eSIM that can use AIS (Thai Simcard, Nomad, Ubigi, Maya, Airalo) gives you a backup. Holafly lists True and dtac only.

Which one should you pick?

• Short trip, light use (under a week): Thai Simcard 1GB for $1.99 or 3GB for $3.49 (15 days).
• Two weeks, normal use: Thai Simcard 10GB for $7.99 (30 days). Nomad 10GB at $10.00 is the next cheapest with 30 days.
• Heavy data for a week: Maya Mobile at $19.99 (5GB a day). Nomad at $15.00 if 2GB a day is enough.
• Hotspot for a laptop: a fixed plan works best. Thai Simcard 20GB is $12.49. Holafly limits hotspot to 1GB a day.
• Budget: Thai Simcard is the cheapest per GB in our data, at 80 cents per GB on the 10GB plan.
• Need a Thai phone number: none of these data eSIMs gives you one. Buy a local AIS or True tourist SIM if you need to receive Thai SMS.

Sources: Airalo Thailand (13 Nov 2026), Holafly Thailand (13 Nov 2026), Nomad Thailand (13 Nov 2026), Ubigi plans (13 Nov 2026), Maya Mobile Thailand (13 Nov 2026), Unusual Nomad: AIS vs TrueMove vs dtac (updated Nov 2026), Opensignal Thailand August 2026 (Aug 2026). Prices checked 13 November 2026.