Cheapest eSIM for Southeast Asia in 2026

11 countries ranked by cost-per-GB. Prices verified weekly from 5 providers.

Price Summary:

Cheapest eSIM in Southeast Asia: HelloRoam in Thailand at $0.29/GB. Region average: $1.43/GB across 11 countries. 5 countries have sub-$1/GB plans. Prices verified May 2026.

HelloRoam Southeast Asia plan — 11 countries, 30+ networks, 5G in 8

Key carriers: AIS, CelcomDigi, Singtel. From $3/day — cheaper than airport SIM cards, activates before you land.

Get Southeast Asia plan from $3/day →

11 countries · sorted by $/GB ascending

Every Southeast Asia destination

Southeast Asia eSIM prices by country, sorted by cost per GB ascending. Verified weekly.
Country	Provider	$/GB	From
Thailand	HelloRoam	$0.29	$14.38
Singapore	HelloRoam	$0.74	$36.99
Indonesia	HelloRoam	$0.84	$41.99
Myanmar	Holafly	$0.90	$4.50
Malaysia	HelloRoam	$0.94	$46.99
Vietnam	HelloRoam	$1.37	$27.49
Cambodia	HelloRoam	$1.44	$28.80
Philippines	HelloRoam	$1.51	$75.61
Timor-Leste	Holafly	$1.70	$8.50
Laos	HelloRoam	$2.20	$43.99
Brunei	HelloRoam	$3.75	$75.00

Pricing insights

Southeast Asia eSIM pricing insights

Cheapest eSIM for international travel

The cheapest eSIM for international travel is HelloRoam in Thailand at $0.29/GB. Across 11 countries, the five lowest rates are: 1. Thailand ($0.29/GB); 2. Singapore ($0.74/GB); 3. Indonesia ($0.84/GB); 4. Myanmar ($0.90/GB); 5. Malaysia ($0.94/GB). Prices are verified weekly from 5 providers. Verified June 2026.

eSIM vs carrier roaming cost

eSIM data averages $1.43/GB across 11 countries. Major carrier roaming plans typically cost $10/day for limited data or $2.05/MB without a plan. A 5GB eSIM plan saves $40-$90 compared to a week of carrier roaming. eSIM plans have no daily fees and unused data lasts the full validity period. Verified June 2026.

FAQ

Southeast Asia eSIM — frequently asked

The cheapest per-GB rate in Southeast Asia is $0.29/GB from HelloRoam in Thailand. The regional average is $1.43/GB, so picking the lowest-cost destination saves budget travelers 80% compared to paying average rates. 5 countries in Southeast Asia offer sub-$1/GB prepaid plans. Rates verified weekly.

Prepaid eSIM prices across Southeast Asia range from $0.29/GB in Thailand up to $3.75/GB in Brunei. The regional average sits at $1.43/GB. On a typical 5 GB trip, that gap translates to a $17.31 difference in total cost. Choosing the right country plan over a regional bundle often cuts the bill by 20–40%.

HelloRoam offers the best budget value in Southeast Asia at $0.29/GB for Thailand. At that rate, 10 GB of prepaid data costs just $2.88 — compared to the regional average of $14.30 for the same data. Rankings update weekly from 5 providers: Airalo, Holafly, HelloRoam, Saily, and Nomad.

Yes. Airport SIM cards in Southeast Asia typically cost $8–$25 for 3–5 GB — roughly $2–$5/GB after markup and activation fees. The cheapest prepaid eSIM in Southeast Asia is $0.29/GB from HelloRoam. On a 5 GB purchase that is a saving of $13.56 or more versus airport pricing. Prepaid eSIMs also activate instantly before you land, so you skip the queues entirely.

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