Originally Posted by
drminn
I had the same experience yesterday - looked at a flight from Germany to MSP on kayak, priced out at $1065, the same flight on delta.com priced at 930 Euro, or about $1200. Curiously enough, Kayak claimed the face was available on delta.com, I ended up booking it on Orbitz.
Perhaps you should have read the first sentence in the Best Fare Guarantee rules, it only applies to fares priced in US dollars and does not apply to flights originating from Europe -- "Best Fare Guarantee is valid for electronic tickets purchased in U.S. dollars by a credit card with a United States billing address at delta.com for travel originating in the United States, U.S. Virgin Islands, Puerto Rico, and Canada."
Also, you have to actually book the ticket on delta.com to qualify.