Cheapest return ORD–LHR flights, August

AirHint found the following cheapest return flights from Chicago (ORD) to London (LHR) in August 2026 (see full year).

Return flights

19 Aug - 24 Aug Icelandair
17 Aug - 24 Aug Icelandair
11 Aug - 19 Aug Icelandair
11 Aug - 20 Aug Icelandair
16 Aug - 23 Aug Icelandair
05 Aug - 19 Aug Icelandair
10 Aug - 23 Aug Icelandair
16 Aug - 25 Aug Icelandair
12 Aug - 27 Aug Air Canada
14 Aug - 26 Aug Air Canada
19 Aug - 02 Sep Aer Lingus
25 Aug - 01 Sep Aer Lingus
25 Aug - 08 Sep Aer Lingus
26 Aug - 02 Sep Air France
26 Aug - 09 Sep Delta
26 Aug - 03 Sep Delta
30 Aug - 09 Sep Aer Lingus
19 Aug - 02 Sep British Airways direct
27 Aug - 04 Sep Aer Lingus
27 Aug - 04 Sep British Airways direct

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

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