Australia eSIM
Travel Australia with fast, reliable data. On Optus and Telstra.
6 plans
3 GB
Full speedRoaming on Optus and Telstra
฿79≈ $2.61
Buy at Vacay →5 GB
Full speedRoaming on Optus and Telstra
฿109≈ $3.60
Buy at Vacay →10 GB
Full speedRoaming on Optus and Telstra
฿179≈ $5.91
Buy at Vacay →20 GB
Full speedRoaming on Optus and Telstra
฿359≈ $11.85
Buy at Vacay →30 GB
Full speedRoaming on Optus and Telstra
฿489≈ $16.14
Buy at Vacay →50 GB
Full speedRoaming on Optus and Telstra
฿789≈ $26.04
Buy at Vacay →Prices from Vacay as of 8 Nov 2026. Prices may change, so check the latest price on the provider's page before you pay. Buy links are affiliate links, and you pay the same price.
US dollar prices use Vacay's rate (about ฿30.30 per $1, checked 12 Nov 2026), and buy buttons open Vacay in US dollars.
Australia eSIM prices by trip length
Vacay prices as of 8 Nov 2026. Pick your days and plan above to buy.
| Days | From | Recommended | Unlimited 10Mbps |
|---|---|---|---|
| 3 days | 3 GB฿69≈ $2.28 | 5 GB฿99≈ $3.27 | ฿209≈ $6.90 |
| 5 days | 3 GB฿79≈ $2.61 | 10 GB฿179≈ $5.91 | ฿329≈ $10.86 |
| 7 days | 3 GB฿89≈ $2.94 | 20 GB฿379≈ $12.51 | ฿449≈ $14.82 |
| 10 days | 3 GB฿99≈ $3.27 | 20 GB฿399≈ $13.17 | ฿609≈ $20.10 |
| 15 days | 3 GB฿119≈ $3.93 | 30 GB฿599≈ $19.77 | ฿909≈ $30.00 |
| 30 days | 3 GB฿139≈ $4.59 | 50 GB฿1,029≈ $33.96 | ฿1,809≈ $59.70 |
New Vacay customers: 10% off
Copy the code and enter it at checkout.
Free Easy travel insurance
Free Easy cover up to THB 50,000 · select Easy before departureCompare plans →Not sure how much data you need?
Estimate data for your Australia tripEstimate my data →Australia eSIM tips
- You can scan the QR and install the eSIM before you travel. Days start counting when you arrive in Australia, in 24-hour periods from first use, and you must activate it within 60 days of purchase.
- Moderate use is about 1.5 GB a day: 10 GB is enough for 5 days. Distances between cities are long, so download offline maps before you go. If you don't want to count data, pick Unlimited.
- Every plan uses Optus and Telstra. You can check your remaining data and top up. If you continue to New Zealand, choose Best New Zealand (+Australia) to use one SIM in both countries.
- Optus does not support some phone models, so check yours before ordering. Every plan allows hotspot sharing. They are data only, with no phone number for calls or SMS.
Read before you go
eSIMs for other destinations
See all destinations
Australia eSIM questions
How much is an Australia eSIM?
Best Australia costs ฿69 for 3GB for 3 days or ฿199 for 10GB for 10 days. Unlimited 10 Mbps costs ฿209 for 3 days. New Vacay customers get 10% off with the code THAF-UCQY.
Which network does it use?
The plans in the table roam on Optus and Telstra. Optus restricts access on some phone models, so check yours before ordering at https://www.optus.com.au/support/checkdevice
Is unlimited worth it in Australia?
30GB for 10 days at ฿549 costs less than Unlimited 10 Mbps for 10 days at ฿609 and runs at full speed until the data is used up. Pick Unlimited 10 Mbps if you don't want to count data or share a hotspot with several people. The Unlimited Full Speed option on Vacay gives 5GB a day at full speed, then 10 Mbps.
What if I'm also going to New Zealand?
Choose Best New Zealand (+Australia): 5GB for 5 days at ฿139, with one SIM for both countries. This plan is not in the picker above.