Open the Airtel Thanks app
Go to the International Roaming section
Select your destination country
Choose an international roaming pack
Make the payment and activate the pack
Ensure your Airtel number has international roaming enabled
Turn on data roaming in your phone settings
Restart your phone after reaching the destination if needed
You can also activate roaming by calling Airtel customer care
You can also activate roaming by sending the required SMS if available on your plan
Check your balance and pack validity before travel