We have to wait to see what the impact will be on MAN - already we know that the DL service to JFK is being pulled from September with it being reinstated from June.
There will be no impact as American were not doing JFK from MAN last winter 2010/11 but they are this year so the JFK figures will be more less the same and if they do fall it will be because people are not traveling.
JFK was due back from 23 March 2012. Has this being put back to June 2012? If so the only impact on JFK will be March - June 2012 were there will only be one carrier next year compared to two this year.