Fly nonstop from Chicago to London for $581 round-trip on Virgin Atlantic.
Searching VA,, we found seats departing ORD on Thursday, September 22, returning from LHR on Friday, September 30.
Other dates are also available for departures through late October.
See our fare details for booking info.
Need a room in London? Here's what's available for the above dates on Hotelwatchdog.