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Bangkok eSIM

100 Thailand plans · from $3.38

Bangkok runs on Grab, Google Maps and river-boat timetables you will want to check on the move, and the city is far too spread out to navigate on hotel Wi-Fi alone. A travel eSIM means you can order a ride from the Suvarnabhumi arrivals kerb instead of negotiating with the taxi touts.

Landing at Suvarnabhumi & Don Mueang (BKK / DMK)

Thai law requires passport registration for local prepaid SIMs, so the airport counters take your details and a signature. An eSIM has no registration step — install it before departure and it connects as soon as you land.

eSIM plans that cover Bangkok

Bangkok is covered by every Thailand plan below — there is no separate city-only eSIM to buy.

Choose a data plan

1 GB

7 days· 0.4 GB per $1

$3.38

★ BEST VALUE

Unlimited

1 days· ∞ GB per $1

$4.35

2 GB

15 days· 0.4 GB per $1

$5.70

3 GB

30 days· 0.5 GB per $1

$7.53

Unlimited

South East Asia only

3 days· ∞ GB per $1

$10.38

5 GB

30 days· 0.5 GB per $1

$11.40

Unlimited

South East Asia only

5 days· ∞ GB per $1

$14.52

10 GB

30 days· 0.6 GB per $1

$19.46

Unlimited

South East Asia only

7 days· ∞ GB per $1

$22.73

Unlimited

10 days· ∞ GB per $1

$31.20

20 GB

30 days· 0.7 GB per $1

$33.64

Unlimited

15 days· ∞ GB per $1

$46.27

20 GB

Global - Light only

60 days· 0.4 GB per $1

$57.64

50 GB

30 days· 0.8 GB per $1

$75.19

Unlimited

30 days· ∞ GB per $1

$89.93

100 GB

30 days· 0.9 GB per $1

$130.39

50 GB

Global - Light only

90 days· 0.4 GB per $1

$135.29

Which networks you'll be on in Bangkok

Siima eSIMs for Thailand ride AIS and True Move. AIS has the strongest 5G footprint in central Bangkok; True Move is competitive along the BTS corridor and better on some southern island routes if you continue on.

Coverage around Bangkok

BTS Skytrain and MRT

The Skytrain is elevated, so signal is excellent along Sukhumvit and Silom. MRT subway tunnels have full coverage including between stations.

Grand Palace and Chao Phraya river

Solid coverage across Rattanakosin and on the express boats. The riverside is where you will use data most — boat piers are poorly signposted and the routes are easiest to follow live.

Chatuchak and the night markets

Coverage is fine, but weekend crowds at Chatuchak congest cells enough to slow map loads. Screenshot your stall list before you go in.

Ayutthaya day trip

The train and minivan routes north hold 4G the whole way, and the temple complex itself is well covered.

How much data you need

Bangkok is a heavy maps-and-rideshare city: budget 4–6 GB for a week. If you are continuing to the islands, buy the country plan rather than a Bangkok-only allowance — the same eSIM covers Phuket, Krabi and Koh Samui.

Work it out with our data usage calculator →

Frequently asked questions

Can I use the same eSIM in Bangkok and on the Thai islands?
Yes. Siima plans for Thailand are country-wide, so the same eSIM works in Bangkok, Chiang Mai, Phuket, Krabi and Koh Samui with no extra step. Coverage on the smaller islands is thinner but present in the main resort areas.
Do I have to register my passport to use an eSIM in Thailand?
No. The registration requirement applies to Thai prepaid SIM cards bought locally. A Siima eSIM is issued before you travel and needs no in-country identity check.
How do I set up an eSIM before arriving in Bangkok?
Install it at home while you still have Wi-Fi: open Settings → Cellular → Add eSIM and scan the QR code from your Siima confirmation email. Leave the line switched off until you land — the plan starts counting from first use in Thailand, not from purchase.
How much data do I need for a trip to Bangkok?
Bangkok is a heavy maps-and-rideshare city: budget 4–6 GB for a week. If you are continuing to the islands, buy the country plan rather than a Bangkok-only allowance — the same eSIM covers Phuket, Krabi and Koh Samui.
Is an eSIM cheaper than roaming in Bangkok?
Almost always. Daily roaming passes from most home carriers run $10–15 per day, while Siima plans covering Bangkok start from $3.38 for the whole trip. You also avoid per-megabyte charges if you exceed a roaming pass allowance.
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