$400 off $2000 — Amex Sync for Qantas
 

Details
Get a 1X $400 statement credit by using your enrolled Card to spend $2000+ on airfare only online at qantas.com by 4/14/16. Purchase must be made on Qantas’ US website in USD. Flight must originate in US. Not valid on vacation packages. See terms.

Terms
Valid online only. Flight must originate in US. Valid only on purchases of airfare made at Qantas’ US website. Purchases must be made in US Dollars. Not valid on purchases made by phone or at physical locations including, but not limited to the Qantas shop, the Qantas store and Qantas clubs and lounges. Offer not valid on purchases made in flight. Offer not valid for any purchases of a vacation package or through a third party (including resellers and online marketplaces). Qantas freight airfare not included.

I have a few Amex cards and I was able to load this offer to all of them, which they've definitely made it harder to do recently. Send me a PM if you're having trouble getting in on this deal.