As one of the billboard features of Apple iOS 6, Passbook has proven way more useful than we initially anticipated, but what's really going to make this a killer feature in the future is having all of the world's airlines on board. A few months after launch, Passbook is making some progress towards that ticketing utopia.

Jaunted has compiled a list of the 10 airlines that are already compatible with Passbook ticketing:

- Air Canada *new this month
- American Airlines
- ANA *domestic flights only
- Lufthansa
- Malaysian Airlines
- Porter Airlines
- Qantas *new this month
- Turkish Airlines *new this month
- United
- Virgin Australia

Jaunted also notes that Delta and British Airways will soon support Passbook as well. It's nice to see airlines getting behind something that makes me life less of a pain. [Jaunted]