For flights booked by February 14, 2016, you can get up to a 20% discount on Virgin America flights. Although you only have a few days to book, this is valid for flights flown between February 27 and April 27, 2016. Make sure to use promotion code TAN20 at checkout.
Unfortunately, like all other Virgin America offers, the 20% off is only valid on off-peak times. Depending on when you travel, you’ll receive either 10% or 20% off (and unfortunately nothing on Sunday travel). 20% off is for travel on Tuesday, Wednesday, and Saturday. 10% off is for travel Monday, Thursday, and Friday. The offer is NOT valid for Sunday travel and to/from Honolulu and Maui. Additionally, blackout dates include: 3/18-3/19, 3/25-3/26, and 3/28.
You can find more about this promotion and book here.