Summer plans already swirling in your head? If you're planning on going to London later this year this United fare is the deal for you. Fly nonstop from Chicago-ORD to London-LHR for $401 roundtrip through the end of the booking calendar in December.
What makes this fare deal jump out to me is that while peak summer June and July travel is blacked out mid-August dates seem to be available at this price-point making it a fantastic fare for that travel period. If you want to fly out during another month, you'll be able to book at this price starting in early February through the end of May then again from the mentioned mid-August dates through the end of the year.
Depart from Chicago on Sundays through Wednesdays, return from London on Monday through Friday. A Saturday night stay is required.
Searching on United, I found seats departing ORD on Monday, August 12 and returning from LHR on August 21, 2019.
This fare falls into United's Basic Economy fare bracket meaning only carry-on luggage is included. If you require checked baggage, it will cost additional unless you have a United brand credit card that waives baggage fees which you can find out more about here.
Need a room in Londontown? Here's what's available for the mentioned dates on Hotelwatchdog.