Question: what is the difference between delta economy comfort and preferred?
Answer: Economy Comfort seats have up to 4 inches more legroom and up to 50% more recline on the JFK to/from SFO or LAX and ATL to/from HNL routes. Delta's Preferred seats – in the exit, bulkhead, front cabin aisle and window – are free for all Medallion, and Y/B fares.