BA's Club Suite offers private pods with doors, ideal for long-haul comfort.
BA's World Traveller Plus offers extra legroom and upgraded service, ideal for long-haul flights.
Round-trip from | $528 (Ovago) |
---|---|
One-way from | $226 (Booking.com) |
Popular in | June |
Cheapest in | February |
Average price | $977 |
Good round-trip deal | $622 or less |
Good one-way deal | $388 or less |
Fly from
Fly to
Route
Depart
Return
Price
ChicagoLondon
ORD - LHR
ORDLHR
Chicago O'Hare Intl
Fri 8/15
10:15 pm-11:55 am
1 stop31h 40m
London Heathrow
Mon 8/25
9:25 pm-9:15 pm
1 stop29h 50m
ChicagoLondon
ORD - LHR
ORDLHR
Chicago O'Hare Intl
Sun 8/31
8:44 pm-6:25 am
1 stop27h 41m
London Heathrow
Tue 9/9
9:15 am-11:50 am
Nonstop8h 35m
ChicagoLondon
ORD - LHR
ORDLHR
Chicago O'Hare Intl
Tue 10/14
12:55 pm-2:20 pm
2 stops19h 25m
London Heathrow
Tue 10/28
9:05 am-3:00 pm
1 stop34h 55m
ChicagoLondon
ORD - LHR
ORDLHR
Chicago O'Hare Intl
Wed 8/27
9:30 pm-8:40 pm
1 stop17h 10m
London Heathrow
Tue 9/9
10:30 am-7:15 pm
1 stop14h 45m
ChicagoLondon
ORD - LHR
ORDLHR
Chicago O'Hare Intl
Thu 8/14
10:35 pm-12:15 pm
Nonstop7h 40m
London Heathrow
Tue 8/19
6:10 am-1:30 pm
1 stop13h 20m
ChicagoLondon
ORD - LHR
ORDLHR
Chicago O'Hare Intl
Mon 12/1
7:20 pm-6:50 pm
2 stops17h 30m
London Heathrow
Mon 12/8
6:40 am-4:45 pm
1 stop16h 05m
ChicagoLondon
ORD - LHR
ORDLHR
Chicago O'Hare Intl
Thu 10/16
1:55 pm-6:30 am
1 stop10h 35m
London Heathrow
Wed 10/22
8:40 am-3:55 pm
1 stop13h 15m
ChicagoLondon
ORD - LHR
ORDLHR
Chicago O'Hare Intl
Thu 10/23
6:00 pm-6:50 pm
1 stop18h 50m
London Heathrow
Wed 10/29
6:00 am-4:00 pm
1 stop15h 00m
ChicagoLondon
ORD - LHR
ORDLHR
Chicago O'Hare Intl
Tue 8/19
2:10 pm-6:45 am
1 stop10h 35m
London Heathrow
Sun 11/16
8:40 am-2:20 pm
1 stop11h 40m
ChicagoLondon
ORD - LHR
ORDLHR
Chicago O'Hare Intl
Thu 8/14
2:10 pm-6:45 am
1 stop10h 35m
London Heathrow
Wed 8/27
8:40 am-2:40 pm
1 stop12h 00m
The price you pay for your flight from Chicago O'Hare Intl Airport to London Heathrow Airport may vary depending on when you book. For the best chance of a lower fare, look to book 28 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Currently, November is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to London Heathrow Airport (average of $661). Flying from Chicago O'Hare Intl Airport to London Heathrow Airport in June is currently the most expensive (average of $1,097). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
A simple way to save on the total cost of your ticket is to fly from Chicago O'Hare Intl Airport to London Heathrow Airport in the morning. If you’re flexible enough to do this you can expect to save up to 17% on your trip compared to booking a flight in the afternoon.
Travelers seeking maximum savings on their Chicago O'Hare Intl Airport to London Heathrow Airport flight should consider departing on Wednesday at noon when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from ORD to LHR are scheduled on a Monday (57 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (51 on average).
Reykjavik (KEF) – chosen by Cheapflights users on 83% of 1-stop itineraries from Chicago O'Hare Intl Airport to London Heathrow Airport on Cheapflights.
Lisbon (LIS) is the most affordable 1-stop option, with an average round-trip price of $494.
Flights via Dublin (DUB) have the shortest average one-way travel time for 1-stop routes: 2h 45m.
Flights via Reykjavik (KEF) offer the fastest connection on this route, with an average layover time of 1h 09m.
Food
Overall
Boarding
Crew
Comfort
Entertainment
Reviews
Kim,May 2025
PIH - SLC
Food
Overall
Boarding
Crew
Comfort
Entertainment
Reviews
Kim,May 2025
PIH - SLC
Food
Overall
Boarding
Crew
Comfort
Entertainment
Reviews
Kim,May 2025
PIH - SLC
Food
Overall
Boarding
Crew
Comfort
Entertainment
Reviews
Kim,May 2025
PIH - SLC
Food
Overall
Boarding
Crew
Comfort
Entertainment
Reviews
Kim,May 2025
PIH - SLC
Food
Overall
Boarding
Crew
Comfort
Entertainment
Reviews
Kim,May 2025
PIH - SLC
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Cheapest$257 | Average$671 | FlexibilityNo cancel fee | On-time79% | |
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Cheapest$569 | Average$757 | FlexibilityNo cancel fee | On-time76% | |
Cheapest$581 | Average$743 | FlexibilityNo cancel fee | On-time77% |