Chicago to London flights
O'Hare International (ORD), United States → Heathrow (LHR), United Kingdom
$374lowest estimated one way
8h 15mnonstop flight time
6,345 km3,942 miles
Wednesdayusually the cheapest day
Set a price watch there and get an email or notification when the fare drops.
Cheapest dates in the next few weeks
| Thu 7 Jan | $374 |
| Tue 8 Dec | $382 |
| Wed 6 Jan | $389 |
| Wed 9 Dec | $400 |
| Sat 5 Dec | $402 |
One-way economy, estimated by Flight Wiki's fare model; typical day about $501. Prices change often, so check live prices before booking.
Questions
How long is the flight from Chicago to London?
About 8h 15m nonstop. The distance is 6,345 km (3,942 miles). Flights with a stop take longer.
How much is a flight from Chicago to London?
One-way economy fares are estimated between $374 and $701 over the coming weeks, about $501 on a typical day. Check live prices before you book.
What is the cheapest day to fly from Chicago to London?
In our estimates Wednesday is usually the cheapest day. The cheapest dates right now are Thu 7 Jan, Tue 8 Dec, Wed 6 Jan.
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London to Chicago
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