Flyus.com searches for the lowest fares from hundreds of airlines to offer you cheap, competitive airfares to your desired destinations, no matter where you're headed. Tell us where you want to go and our interactive Price Tracker tool will point you to the best time to fly to save you time and money!
Chicago (ORD) » United Kingdom » ORD to LHR
Good to Know - Flights from Chicago to London
May
Best time to beat the crowds
February
Most popular time to fly
$ 447.21
or less (round trip)
Top Tips for Finding Cheap Flights from Chicago to London
Looking for cheap airfare from Chicago to London? 25% of our users found round-trip tickets to London for the following price or less: $ 447.21 Book at least 4 weeks before departure in order to get a below-average price. High season is considered to be February. The cheapest month to fly from Chicago to London is May. Enter your preferred departure airport and travel dates into the search form above to unlock the latest Chicago to London flight deals.
FAQs - Booking from Chicago to London flights
A flight from Chicago to London takes 8hours5minutes.
The cheapest flight Chicago to London found on flyus.com in the last 72 hours was $447.21 round-trip.
Find cheap flights from Chicago to London and book discounted airfare from different cities all over the United States. Explore airline ticket deals on flight routes all over the World! At Flyus, we take pride in helping you discover and book the best flight deals for your next trip at the cheapest price. We make booking flights from different departures easy and provide you with peace of mind with our Best Purchase Guarantee.
Cheapest Flights
from Chicago, United States (ORD) to:
-
London, United Kingdom (LHR)Apr 01, 25 - Apr 09, 25$447.21
-
London, United Kingdom (LHR)Apr 24, 25 - Apr 30, 25$507.21
-
London, United Kingdom (LHR)Apr 05, 25 - Apr 09, 25$507.21
-
London, United Kingdom (LHR)Mar 28, 25 - Apr 02, 25$507.81
-
London, United Kingdom (LHR)Apr 08, 25 - Apr 15, 25$509.01
