A MacBook Air does not have a Lightning port. See the following from MacBook Air - Technical Specifications - Apple
Charging and Expansion
Two Thunderbolt 3 (USB-C) ports with support for:
Charging
DisplayPort
Thunderbolt (up to 40Gb/s)
USB 3.1 Gen 2 (up to 10Gb/s)
Also see the following from the same source:
Video Support
Simultaneously supports full native resolution on the built-in display at millions of colors and:
One external 6K display with 6016-by-3384 resolution at 60Hz at millions of colors, or
One external 5K display with 5120-by-2880 resolution at 60Hz at millions of colors, or
Up to two external 4K displays with 4096-by-2304 resolution at 60Hz at millions of colors
Thunderbolt 3 digital video output
Native DisplayPort output over USB‑C
VGA, HDMI, and Thunderbolt 2 output using adapters (sold separately)