Update to Wiki:
Q: What type of planes does Virgin America use?
A: Airbus A320s and A319s. Add A321
Q: Does Virgin America have a lounge?
A: Yes, The Loft is at LAX T3, upper level (formerly the TWA lounge space long ago). Day passes are $30, or $15 for Silver Elite members. Access is complimentary for Gold Elite members. The Loft also accepts PriorityPass.
The Alaska Airlines Alaska lounge is available for use at LAX, in Terminal 6 on the mezzanine level, near gate 64.
https://www.virginamerica.com/cms/fly-with-us/vx-lounges/alaska-lounge