Step 1: Register your American Express card for 10% off any Virgin America coach ticket with this Twitter deal.
You’ll get 20% off on Virgin America’s site and then have 10% of that fare credited back as a statement credit on your American Express card.
20% off rules: Book by 04/30/12. Valid for non–refundable Main Cabin tickets only in fare classes S, L, M, U, E, H, B, or V. Tickets require advance purchase of 3 days. Travel must occur between 04/04/12 and 06/15/12. Blackout dates are 05/25/12 and 05/28/12. Promo code may be used only towards newly booked travel and may not be applied to prior bookings.
10% off rules: To be eligible to receive 10% of your first purchase of a Main Cabin Ticket at Virgin America, you must Tweet using #AmexVirginAmer and book travel on your synced Card account through 03/31/12. Statement credits are generally issued within 2-3 business days after your qualifying purchase.