Cheapest return flights from Chicago to London in October from 537€

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

10 Oct - 18 Oct Icelandair
06 Oct - 11 Oct Icelandair
17 Oct - 26 Oct Icelandair
01 Oct - 14 Oct Aer Lingus
15 Oct - 29 Oct Air Canada
12 Oct - 21 Oct Aer Lingus
14 Oct - 21 Oct Aer Lingus
14 Oct - 21 Oct Iberia direct
21 Oct - 28 Oct Iberia direct
12 Oct - 21 Oct Iberia direct
28 Oct - 04 Nov Delta
29 Oct - 05 Nov Delta
27 Oct - 03 Nov Delta
30 Oct - 06 Nov Delta
31 Oct - 07 Nov Delta
26 Oct - 02 Nov Delta
31 Oct - 03 Nov Delta
30 Oct - 02 Nov Delta
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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