Cheapest return flights from Chicago to London in October from $540

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

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

Return flights

04 Oct - 08 Nov Icelandair
08 Oct - 23 Oct Icelandair
17 Oct - 26 Oct Icelandair
18 Oct - 25 Oct Icelandair
24 Oct - 31 Oct Icelandair
15 Oct - 26 Oct Icelandair
02 Oct - 06 Oct Icelandair
08 Oct - 13 Oct Icelandair
03 Oct - 18 Oct Icelandair
21 Oct - 29 Oct Scandinavian Airlines
04 Oct - 11 Oct Icelandair
30 Oct - 02 Nov Scandinavian Airlines
29 Oct - 05 Nov United
29 Oct - 05 Nov British Airways direct
30 Oct - 06 Nov Delta
31 Oct - 03 Nov Delta
25 Oct - 01 Nov Delta
30 Oct - 02 Nov American Airlines direct
04 Oct - 08 Nov British Airways direct
29 Oct - 01 Nov Delta

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

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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