How to call Delta Air Lines reservations desk at JFK airport (phone number)

The Delta Air Lines reservation desk at JFK does not have a direct outside line, however the baggage service/luggage lost and found desk does have an outside line, which has a phone number of (718) 704-2144. They have access to the same computer system as the reservations desk, and so may be able to help with some reservations-related items.

Delta Air Lines 757 taking off