Best eSIM for Sydney: prices, data and how to set it up (2026)
A Slashtel eSIM for Sydney costs from $2.99, with 13 plans from 1GB to 50GB, valid 7 to 30 days. Install it before you fly; it connects when you land at Sydney Kingsford Smith (SYD) on Optus or Telstra and works across Australia. Data only: your own number stays on your usual SIM for calls, texts and bank codes.
For Sydney, buy a data-only eSIM that you install before your flight. It works on arrival at Sydney Kingsford Smith and across Australia, and it starts when you first connect in the destination. Plans range from 1 GB to 50 GB, valid for 7 to 30 days, from USD 2.99.
Sydney eSIM plans: the facts
| Price (USD) | Data | Valid for | Per GB | Networks | Hotspot | 5G |
|---|---|---|---|---|---|---|
| $2.99 | 1 GB | 7 days | $2.99 | Optus or Telstra | Yes | Yes, where available |
| $3.49 | 1 GB | 7 days | $3.49 | Optus or Telstra | Yes | Yes, where available |
| $4.49 | 3 GB | 15 days | $1.50 | Optus or Telstra | Yes | Yes, where available |
| $6.59 | 3 GB | 15 days | $2.20 | Optus or Telstra | Yes | Yes, where available |
| $4.89 | 3 GB | 30 days | $1.63 | Optus or Telstra | Yes | Yes, where available |
| $6.99 | 3 GB | 30 days | $2.33 | Optus or Telstra | Yes | Yes, where available |
| $8.99 | 5 GB | 30 days | $1.80 | Optus or Telstra | Yes | Yes, where available |
| $10.49 | 5 GB | 30 days | $2.10 | Optus or Telstra | Yes | Yes, where available |
| $10.89 | 10 GB | 30 days | $1.09 | Optus or Telstra | Yes | Yes, where available |
| $18.89 | 10 GB | 30 days | $1.89 | Optus or Telstra | Yes | Yes, where available |
| $18.29 | 20 GB | 30 days | $0.91 | Optus or Telstra | Yes | Yes, where available |
| $34.59 | 20 GB | 30 days | $1.73 | Optus or Telstra | Yes | Yes, where available |
| $31.89 | 50 GB | 30 days | $0.64 | Optus or Telstra | Yes | Yes, where available |
Prices checked 10 October 2026, all-in, no roaming charges. Networks and 5G are from our supplier's network list for Australia; the eSIM joins the strongest one automatically and speed depends on local coverage. Data only: no phone number, calls or SMS.
Which plan for your trip to Sydney
| Trip | Maps, messages, light browsing | Social, video calls, hotspot |
|---|---|---|
| 1 week | 3GB · 15 days $4.49 about 3GB needed | 10GB · 30 days $10.89 about 7GB needed |
| 2 weeks | 5GB · 30 days $8.99 about 5GB needed | 20GB · 30 days $18.29 about 14GB needed |
| 1 month | 10GB · 30 days $10.89 about 9GB needed | 50GB · 30 days $31.89 about 30GB needed |
Live prices from our Australia plans. Usage estimates: about 0.3GB a day for maps, messaging and browsing; about 1GB a day with video and calls.
How to set up your Sydney eSIM
iPhone
- On Wi-Fi, open the QR email and go to Settings → Mobile Service (or Cellular) → Add eSIM → Use QR Code.
- Scan the QR and label the new line "Travel".
- Keep your usual line on for calls and texts; choose the Travel eSIM for mobile data.
- When you land in Sydney, turn on Data Roaming for the Travel eSIM.
Android
- On Wi-Fi, go to Settings → Network & internet (Connections on Samsung) → SIMs → Add eSIM.
- Choose "Scan QR code" and scan the code from your email.
- Set the new eSIM as the SIM for mobile data; keep your usual SIM for calls and texts.
- When you land in Sydney, turn on Roaming for the new eSIM.
Menu names vary a little by phone and software version. The QR works once: don't delete the eSIM after installing it. Full guide with screenshots · Check your phone supports eSIM
Getting online in Sydney
- Install the eSIM on Wi-Fi before you fly, so it is ready when you land.
- On landing, turn on data roaming for the eSIM so it can connect.
- Keep your home SIM in the phone for calls, texts and one-time passcodes.
Other options
Other eSIMs, such as Airalo and Holafly, also cover Australia, and you can buy a local SIM at the airport with your passport. We publish every seller's price for the same data side by side: compare Australia eSIM prices.
Travelling on from Sydney? The same eSIM also works in Melbourne, Brisbane, Perth.