there is availability online, but i don't think the promo includes delta. only klm and af. also the taxes aren't "a couple hundred dollars" they're about 700 dollars on a roundtrip. at 25k for coach af during the promo + $700, or 50k for coach on dl + $700 you're not really saving too much, if anything. at that price transfer you're points to ba with the %50 bonus, and you can fly rt from the states for 50k (34k amex) with about $500 in taxes, and much better availability.