Update: This was a glitch that prevented taxes and fees from being added. It has since been "corrected" by Virgin, so these prices are no longer available. If you're going to London anytime soon (or need an excuse to) check out September fares at VirginAtlantic.com for round trip flights from $411. This is the best deal we've seen for flights to London. For example, there are several flights from Philadelphia for $456, and we just found a flight from JFK to Heathrow for $476.90 including all taxes and fees. Virgin is very clean (pardon the pun) and can be described as a party on a plane. You'll get complimentary WiFi, a free checked bag and a meal included.