The short answer is "yes". Prices have been higher, in general, but it's still possible.

I just did a random search on ITA for weeklong trips in March and saw plenty of availability for $672 non-stop to LHR. Could probably do even better with more careful searching.

The taxes and fees are very high, though. On the $672 price:

$230 actual fare
$252 fuel surcharge
$190 taxes and fees

If you look around here, you'll find threads about (arguably) legitimate ways to make fuel surcharges go away. That, combined with careful searching, should net you some relatively cheap flights.