Cheapest return flights from Chicago to London in December from $571

Best time to book flights for Chicago (ORD) to London (LGW) flights at AirHint

AirHint found the following cheapest return flights from Chicago (ORD) to London (LGW) in December 2025 (see full year).

Return flights

01 Dec - 06 Dec Icelandair
11 Dec - 19 Dec Icelandair
04 Dec - 07 Dec Icelandair
23 Dec - 28 Dec Icelandair
28 Dec - 03 Jan TAP
19 Dec - 09 Jan Icelandair
26 Dec - 03 Jan TAP
22 Dec - 09 Jan Icelandair
18 Dec - 23 Dec Icelandair
19 Dec - 23 Dec Icelandair
18 Dec - 25 Dec TAP
22 Dec - 29 Dec Icelandair
22 Dec - 28 Dec Icelandair
20 Dec - 03 Jan Icelandair

Also check the deals for one-way flights from Chicago to London in December.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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