Great-circle route ORD ↔ LHR. Faint dots are other airports, for geographic context. Download this map — free to reuse with a link back to this page.
Frequencies below are per direction, from our most recent schedule sample.
| Direction | Frequency | Days | Airlines |
|---|---|---|---|
| ORD → LHR Chicago to London |
63/wk | Daily | American Airlines, British Airways, United Airlines |
| LHR → ORD London to Chicago |
63/wk | Daily | American Airlines, British Airways, United Airlines |
Where a direction shows “—” we track it as an operating nonstop but hold no schedule sample for it — we would rather show nothing than guess.
In 2025, airlines reported 1,041,443 passengers on 5,578 flights between ORD and LHR — about 2,855 a day — filling 83% of the 1,258,087 seats flown. American Airlines Inc. carried the most passengers (39%).
Source: US DOT T-100 segment reports — actual airline-reported traffic, scheduled service only, both directions combined. Cargo and charter flights excluded.
3 airlines fly the ORD–LHR nonstop, including American Airlines, British Airways, United Airlines.
Recent scheduled departures on this route have used the Boeing 767-300, Boeing 787, Boeing 787-9, Boeing 777-300ER and 4 other types.
Aircraft assignments change by season and by time of day.
On a long east–west route like this one the two directions do not take the same time. Aircraft flying eastbound ride the mid-latitude jet stream and typically arrive earlier than the westbound leg, which flies into it. The difference is commonly 30 to 90 minutes on transatlantic and transpacific flights, and it varies by season. The estimate above does not model wind — treat it as a midpoint and check the airline's own timetable for the block time on your date.
The distance between Chicago O'Hare International Airport and London Heathrow Airport is 3,942 miles, or 6,344 kilometres.
| Great-circle distance | 3,942 mi |
| Kilometres | 6,344 km |
| Nautical miles | 3,426 nmi |
Measured airport to airport. The actual track is longer — aircraft follow airways, avoid restricted airspace and route around weather.
Yes. 3 airlines fly the route nonstop, with about 126 departures a week across both directions. The route is in our live nonstop dataset, last seeded 2026-07-07.
About 8h 08m in the air. That is a great-circle estimate from the 3,942-mile distance, not a scheduled block time — an airline's published time will differ by roughly 15 to 45 minutes depending on routing, winds and taxi.
About 63 a week from Chicago to London and 63 a week from London to Chicago, from our most recent schedule sample.
American Airlines, British Airways, United Airlines.
In 2025, airlines reported 1,041,443 passengers on 5,578 scheduled flights between ORD and LHR — about 2,855 a day — filling 83% of the seats flown. Source: US DOT T-100 segment reports, both directions combined.
Recent scheduled departures have used the Boeing 767-300, Boeing 787, Boeing 787-9, Boeing 777-300ER. Assignments change by season and by time of day.
