how do I transfer contacts from MacBook to I phone 6

Hello Sm1942,

You can sync your contacts in one of two ways. The first way is to use iTunes to sync them over and you can find the option in the Info tab to sync them. The other option is using a syncing service like iCloud and you can set that up on both on your iPhone and your MacBook Air. For information on how doing either option, the articles below will get you going.

Sync your iPhone, iPad, and iPod with iTunes using USB

https://support.apple.com/en-us/HT201253

Set up iCloud

https://www.apple.com/icloud/setup/

Regards,

-Norm G.