Cheapest return flights from Chicago to London in August from 461€

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

Return flights

14 Aug - 24 Aug TAP
10 Aug - 30 Aug TAP
25 Aug - 01 Sep TAP
27 Aug - 03 Sep Icelandair
21 Aug - 27 Aug TAP
15 Aug - 01 Sep Icelandair
14 Aug - 02 Sep Icelandair
26 Aug - 01 Sep Icelandair
31 Aug - 05 Sep Icelandair
20 Aug - 25 Aug Icelandair
22 Aug - 31 Aug TAP
21 Aug - 24 Aug TAP
07 Aug - 31 Aug TAP
11 Aug - 25 Aug TAP
07 Aug - 30 Aug TAP
04 Aug - 17 Sep TAP
21 Aug - 07 Sep TAP
14 Aug - 10 Sep TAP
07 Aug - 29 Aug TAP
06 Aug - 17 Sep Icelandair

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

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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