Really good deal. Just booked flights for family plus in-laws over new year - AMS-LHR-IAD DCA-JFK-LHR-FCO.

Less than 900 euros each.

Would have eked out further tier points had it been just me, but was warned off anything too crazy by the missus.
Justified the JFK hop on the way back with the old 'DCA is so much easier to get to' line 😀