Best eSIM for Australia in 2026: prices compared
A 5 GB, 30-day Australia eSIM from eSIMology costs £6.99 on Optus and Telstra with 5G. The same 5 GB for 30 days costs £8.50 at Airalo and £8.49 at Saily; Holafly sells unlimited plans only, from £10.00 for 3 days. Prices checked 7 November 2026.
Four things decide the right Australia eSIM for your trip: the networks it runs on, whether it uses 5G, how much data you need, and the speed you get once a daily allowance is used up. eSIMology's plans run on Optus and Telstra, with 5G where the network offers it.
Australia eSIM prices compared
| Trip | eSIMology | Airalo | Holafly | Saily | Buy |
|---|---|---|---|---|---|
| 3 GB · 30 days | £4.99 | – | Unlimited only | £5.99 | Buy |
| 5 GB · 30 days | £6.99 | £8.50 | Unlimited only | £8.49 | Buy |
| 10 GB · 30 days | £10.99 | £14.00 | Unlimited only | £13.99 | Buy |
| 20 GB · 30 days | £18.99 | £23.50 | Unlimited only | £22.99 | Buy |
Rival prices from each provider's own Australia page, as shown to a UK visitor (GBP, VAT included), read 7 November 2026. Our prices are live; pay in pounds, euros or dollars.
What you get from each
| What you get | eSIMology | Airalo | Holafly | Saily |
|---|---|---|---|---|
| Buy without an account | Yes: guest checkout, no app | Account needed before checkout | Yes: guest checkout | App sign-in needed to install |
| Refunds on unused eSIMs | Full refund to your card within 30 days | In the app as Airmoney credit; card refunds by request | Full if not activated, within 6 months; $3.50 fee on partial refunds | Full within 30 days if not installed |
| Speed after a daily cap | Printed on every plan | “Slows”, no speed given | No speed given | 1 Mbps, in its terms |
| Fixed-GB data plans | Yes, with the price per GB | Yes | No: unlimited by the day only | Yes |
| Data left and top-up | On a web page, no app | In the app | In the app | In the app |
| Phone check before paying | Checks the phone you're on at checkout | A list of phones | *#06# test and a list | A list by brand |
| Install | One tap on iPhone, QR code or codes, by email | In the app, QR code or codes | One tap in the app, QR code or codes | App-guided |
| Currencies | GBP, EUR, USD | 16 currencies, often charged in USD | USD and EUR in the app | GBP, USD, EUR, CHF |
From each provider's own public pages. Full comparison
What should you check in an Australia eSIM?
- Networks and 5G: Check which networks your eSIM runs on before you buy. eSIMology's plans run on Optus and Telstra, with 5G where the network offers it.
- Plan size: Start with your days and data. For a 7-day trip with standard use (about 4.9 GB in all), the plan to choose is 5 GB for 30 days.
- Speed after your daily allowance: Daily allowances run from 500 MB to 10 GB a day. Once a day's allowance is used up, speed drops to 384 Kbps, so if you use a lot each day, choose a larger daily allowance or a bigger fixed plan such as 50 GB for 30 days.
- Where data goes and top-ups: Your data reaches the internet through Singapore. Most plans can be topped up, and data left shows on a web page, with no app needed.
Fixed GB, daily or unlimited: which Australia eSIM fits your trip?
- A city break in Sydney or Melbourne, around 7 days: For 7 days of standard use, 5 GB for 30 days from eSIMology fits. Your eSIM uses Optus or Telstra, with 5G where the network offers it, and Uber, DiDi, Messenger and WhatsApp all rely on that data on the move.
- Two weeks on the Gold Coast and in Cairns: Heavy use over 14 days points to 50 GB for 30 days from eSIMology. A large pool suits a trip with a lot of days out.
- A month of heavy daily use: 2 GB a day for 30 days from eSIMology fits that, and eSIMology's daily plans go up to 10 GB a day if you need more on busy days.
- Unlimited plans elsewhere: Airalo's unlimited plans for Australia run for 3, 5, 7, 10, 15 or 30 days, Holafly's for the same lengths, and Saily's for 1 to 30 days, plus 90 and 365.
Australia eSIM prices: questions
Which is cheaper for 5 GB over 30 days in Australia?
For 5 GB over 30 days in Australia: eSIMology £6.99, Saily £8.49, Airalo £8.50. Holafly sells unlimited plans only. Rival prices from their own Australia pages, read 7 November 2026; ours are live.
Can I get a refund on an unused Australia eSIM?
eSIMology: Full refund to your card within 30 days. Airalo: In the app as Airmoney credit; card refunds by request. Holafly: Full if not activated, within 6 months; $3.50 fee on partial refunds. Saily: Full within 30 days if not installed.
Do I need an app to check my data in Australia?
eSIMology: On a web page, no app. Airalo: In the app. Holafly: In the app. Saily: In the app.
Which networks does a Australia eSIM from eSIMology use?
It connects to Optus and Telstra in Australia, with 5G where the network has it. Your phone picks the strongest signal by itself.
Is an unlimited or a fixed-GB eSIM better for Australia?
Choose by how much data you use. eSIMology sells fixed-GB plans and daily allowances up to 10 GB a day, so heavy users can pick a larger fixed plan, such as 50 GB for 30 days. Holafly, Airalo and Saily all sell unlimited plans by the day.
Can I top up an Australia eSIM when my data runs out?
Yes. Most eSIMology plans can be topped up. You check data left and top up on a web page. Airalo, Holafly and Saily show data left and top-ups in their apps.
Get your Australia eSIM
From £3.99 / €3.99 / $4.99. Delivered by email in seconds, installed in two minutes, and refunded in full if you never install it.