Favorite airline: Iberia
The favorite airline for flights from Chicago to London Heathrow is Iberia.
10 %
American Airlines
9 %
9 %
Tip: book 5 months before departure
The best time to buy tickets is 5 months before the flight. Pay only $456.00.
147 days before departure
Cheapest weekday: Tuesday
The cheapest ticket prices are available for flights departing on Tuesday.
Direct flights are more expensive
On this route, direct flights are $179.00 more expensive than flights with a stopover.
non stop flight
1 stop
2 stops
07h 45min
11h 55min
25h 25min
The favorite connection is non-stop
60 % of all bookings on the route Chicago to London Heathrow are for non-stop flights.
Direct flights
07h 45min, from $631
60 %
1 stopover Istanbul
35h 20min, from $617
6 %
1 stopover Washington DC - Dulles International Airport, DC
17h 35min, from $532
5 %