LHR → ORD
Flights from London to Chicago
London to Chicago is a heavyweight transatlantic business corridor, linking Heathrow with O'Hare — one of America's biggest hubs — with onward connections across the US Midwest. Use Flyroz to compare live fares, then book directly with the airline or travel site — we never add a booking fee.
Cheapest one-way from
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How long is the flight?
Nonstop flights from London (Heathrow) to Chicago O'Hare typically take around 8h 40m to 9h 20m westbound. Exact times vary by aircraft, routing, and winds — the return eastbound leg is usually about an hour shorter.
Airlines flying this route
Nonstop LHR–ORD service is operated by American Airlines, British Airways, and United Airlines, each with multiple daily departures. Schedules can change over time, so check current results for your dates.
Direct vs. connecting flights
This route is heavily served by nonstop flights, with one-stop connecting options also available (often via a US East Coast hub or Dublin). Nonstop is usually fastest; connecting itineraries can sometimes be cheaper.
Best time to fly & book
Fares are often higher in summer and around the year-end holidays, and lower in quieter months like late winter. Booking ahead and keeping dates flexible generally gives more choice.
Frequently asked questions
How long is the flight from London to Chicago?
Nonstop flights from Heathrow to O'Hare typically take around 8h 40m to 9h 20m. Connecting itineraries take longer depending on the layover.
Which airlines fly nonstop from London to Chicago?
Nonstop LHR–ORD service is operated by American Airlines, British Airways, and United Airlines. Run a live search to compare fares on your dates.
Are there nonstop flights from London to Chicago?
Yes — Heathrow to O'Hare has multiple nonstop departures a day across three carriers, alongside one-stop connections that can sometimes be cheaper.
When is the cheapest time to fly from London to Chicago?
Fares are often higher in summer and around year-end holidays, and lower in quieter months. Booking ahead and flexible dates usually help.
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