Is the warranty still good on my MacBook Air?

Enter the serial number here to find out: https://checkcoverage.apple.com

Please refer to: Check Your Service and Support Coverage - Apple Support

Hello RealtorLatrice

Thank you for contacting Apple Community.

You can check the warranty of your device via that link :

https://checkcoverage.apple.com/

Insert the serial number of your MacBook Air and you will see how warranty does your laptop has.

Best regards,

John Grace