Just wondering if anyone can advise on the best way to continue a search for return flights to Vancouver, preferably from Gatwick? Can also fly from Dublin as can cope with the extra expense of the additional flights.

Ideally, I'd like to fly out on Tuesday the 5th of February 2013 (I must be in Vancouver by early morning, as in no later than about 07.00, of the 6th), and back on the 8th, or some time after mid-morning on the 7th. I've looked at Aer Lingus and think they can get me there/back for about £530, is that about as cheap as it gets? I've never booked transatlantic flights before.

Thanks