jet2.com has flight times and dates as follows:
Thursday 6th November 2008 – Sunday 9th November 2008
Thursday 13th November 2008 – Sunday 16th November 2008
Thursday 4th December 2008 – Sunday 7th December 2008
Thursday 11th December 2008 – Sunday 14th December 2008
All flights depart from Leeds Bradford at 09:00 arriving into New York at midday and then depart from Newark at 21:00 arriving back in Leeds Bradford at 08:00.
http://www.jet2.com/bargains.aspx
So does the a/c just sit on the ground in EWR over the weekend?