Cheapest return flights from Chicago to London in October from $628

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

03 Oct - 10 Oct Icelandair
16 Oct - 23 Oct TAP
16 Oct - 23 Oct Iberia direct
08 Oct - 13 Oct Iberia direct
03 Oct - 11 Oct TAP
11 Oct - 18 Oct TAP
11 Oct - 18 Oct Iberia direct
03 Oct - 11 Oct Iberia direct
03 Oct - 10 Oct British Airways direct
18 Oct - 25 Oct United

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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