Aer Lingus - Manchester, UK to New York JFK in business on Aer Lingus' non-stop flight for 945 GBP roundtrip. It looks like the cheapest fares are found by booking on OTA's - specifically Expedia UK. You can't book this fare on Aer Lingus' website and I'm unable to find it on ITA Matrix anywhere close to this cheap! Google Flights will display the "correct price" after you choose your return flight. If you just go search for EI business class flights from MAN to JFK it'll show the regular high price - so choose flights to see the updated price.

The fare is available starting January 1, 2024 through end of schedule. This only seems to work on the non-stop flights from MAN to JFK, not flights with a connection in DUB. I can't find the fare on ITA some I'm not specific what the fare rules are, but it looks like it only works for mid-week departures (Tues-Thurs) and requires a stay of at least a week (ex Thurs to Thurs).

The fare is cheapest if you buy the flight in GBP. Expedia US will show a discounted fare, but you'll pay about $100 more. See the difference in the Google Flights screenshots below.

Google Flights - https://www.google.com/travel/flight...uEtRv3qfWs9np7



Google Flights UK - GBP Price

Google Flights US - USD Price

Expedia UK