Cheap flights from Chicago to London
A good round-trip price from Chicago to London is under $485. Over the last 2 days the lowest fare we found each day was usually around $485, and the lowest of all was $485, for travel in November 2026. The cheapest month to fly is November 2026, at around $485.
Join to get alerts- Good price
- $485
- under this is a deal · round trip
- Typical price
- $485
- the middle of what we saw · round trip
- Lowest we saw
- $485
- for November 2026 · round trip
- Nonstop
- 0%
- of the cheapest fares
Cheapest months to fly
The cheapest round trip for each departure month, from fares seen on November 11, 2026.
- Nov 26$485 (Cheapest)
- Dec 26$717
- Feb 27$687
- Apr 27$831
Price over the last 30 days
The lowest round-trip fare we found each day. Today: $485.
Deals on this route
Members get an alert when a fare on this route drops well under $485.
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Questions about this route
What is a good price to fly from Chicago to London?
Under $485 round trip is a good price. Over the last 2 days the typical fare was $485 and the lowest was $485.
What is the cheapest month to fly from Chicago to London?
November 2026, at $485 round trip, from the fares we found today. The most expensive month is April 2027, at $831.
Are there cheap nonstop flights from Chicago to London?
None of the cheapest daily fares we found were nonstop. Expect one stop at the lowest prices.
How far ahead should I book flights from Chicago to London?
The cheapest quarter of fares we found were for trips about 6 days ahead. Deals also appear at short notice, which is why members get alerts.
How long is the flight from Chicago to London?
About 10 h 13 min one way on the cheapest fares we found, including any stops.
Fares like these don't wait
Members get an alert when a fare from their city drops far below normal, with the dates and a link to book.
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Based on 2 days of fares we checked between November 10, 2026 and November 11, 2026. Prices change fast, so always check the final price before you book.