Cheapest return flights from Chicago to London in October from 617€

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

08 Oct - 15 Oct Icelandair
05 Oct - 18 Oct TAP
06 Oct - 31 Oct United
28 Oct - 04 Nov Finnair direct
06 Oct - 31 Oct Finnair direct
01 Oct - 01 Nov Icelandair
01 Oct - 01 Nov Finnair direct
05 Oct - 18 Oct British Airways direct
25 Oct - 01 Nov TAP
25 Oct - 01 Nov Finnair direct

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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