Cheapest return flights from Chicago to London in December from $578

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

03 Dec - 09 Dec TAP
02 Dec - 10 Dec Icelandair
02 Dec - 09 Dec Icelandair
08 Dec - 22 Dec Icelandair
17 Dec - 17 Jan TAP
16 Dec - 23 Dec Icelandair
16 Dec - 24 Dec Icelandair
06 Dec - 20 Dec Icelandair
28 Dec - 19 Jan Icelandair
28 Dec - 18 Jan Icelandair
25 Dec - 08 Jan Icelandair
16 Dec - 30 Dec Icelandair
28 Dec - 03 Jan TAP
17 Dec - 24 Dec TAP
21 Dec - 24 Dec TAP
13 Dec - 02 Jan Icelandair
25 Dec - 02 Jan Air Canada
22 Dec - 05 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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