I've been watching fares from Philadelphia and Newark to London for the past 5 months for a flight at the end of June, returning mid August. Today they went from $1014 to $794 from Newark and $1164 to $844 from Philly. Thought it might help someone!
Didn't help me. :( I bought my tickets on BA in September. I found the price I wanted and bought it. I was ahead about $400 per ticket for 5 months, now I am down $107 each. Oh well. I guess it pays to have some patience.
I bought my tickets today from west coast to Dublin for $754 on Continental. One stop/change in Newark and it for September.
Looks like my procrastination paid off.