My connection from the EU to Seattle via JFK on Delta was delayed today due to the first flight being late and I’ll arrive to my destination 12 hours late, which definitely entitles me to a 600 EUR compensation. How long does Delta generally take to pay out such requests?
Updated: still nothing as of Oct 18th. I've thus filed a dispute with the Czech aviation authority.
In my case it took 5.5 months to receive compensation, though I suspect it would've taken much longer if I didn't contact the Czech Aviation Authority after waiting for a reply for 4 months. So I would recommend anyone in the same situation to file a dispute with Delta, wait for two months, then file a dispute with the aviation authority located in the country of the flight's departure.