Itinerary Guide · 28-56 days
Southeast Asia Circuit eSIM Guide (2026)
Thailand, Vietnam, Cambodia, and Indonesia: the four-country backpacker route through Southeast Asia. Most travelers spend 4-8 weeks on this loop.
Cost comparison
Regional plan vs per-country pricing
Global plan
Airalo Asialink (16 countries)
$18 for 3 GB / 30 daysOne eSIM, all 4 countries, no swapping
Per-country plans
4 separate eSIMs
$5-8 per country at 3 GB (4 eSIMs = ~$28)Multiple installs, separate data pools per country
Destinations
Countries on this circuit
Tap any country for the full eSIM comparison page.
Pro tips
Southeast Asia Circuit eSIM tips
Airalo's Asialink regional plan covers all of SE Asia on one eSIM. For 4+ countries it costs less than buying separate plans.
If staying in one country for 2+ weeks, a per-country plan from Nomad often beats the regional rate for that single stop.
Wi-Fi is widely available in Thailand and Vietnam. A 3 GB plan can stretch further than you think.
Indonesia's coverage outside Java and Bali can be patchy. Buy a plan that routes through Telkomsel for the strongest rural coverage.
FAQ
Southeast Asia Circuit eSIM questions
Q1Do I need a separate eSIM for each SE Asian country?
Not necessarily. Airalo's Asialink plan covers 16 countries in Asia on a single eSIM, including Thailand, Vietnam, Cambodia, and Indonesia. A regional plan is simpler if you cross multiple borders.
Q2When is a per-country plan cheaper than the regional option?
If you are visiting only one or two countries and need minimal data, a per-country 1 GB plan can cost less than the $18 Asialink regional. For three or more countries, the regional plan saves up to 35% vs buying separately at 3 GB each.
Q3How is eSIM coverage in rural Southeast Asia?
Coverage is strong in cities and tourist areas. Rural coverage varies: Thailand and Vietnam have excellent 4G penetration; Indonesia and Cambodia have gaps outside major towns. Choose a provider that routes through the country's largest carrier for the strongest rural signal.
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View guide →Ready for the Southeast Asia Circuit?
Save up to 35% with Airalo's regional plan.
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