Cheapest return flights from Chicago to London in August from 630€

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 August 2025 (see full year).

Return flights

20 Aug - 28 Aug Air Canada
25 Aug - 08 Sep Air Canada
25 Aug - 02 Sep Iberia
26 Aug - 03 Sep United
27 Aug - 04 Sep United
27 Aug - 10 Sep United
27 Aug - 03 Sep United
26 Aug - 03 Sep Finnair direct
25 Aug - 02 Sep Finnair direct
27 Aug - 04 Sep Finnair direct
27 Aug - 10 Sep Finnair direct
12 Aug - 19 Aug Iberia
19 Aug - 26 Aug United
06 Aug - 19 Aug Finnair direct
12 Aug - 19 Aug Finnair direct
08 Aug - 25 Aug Air Canada
15 Aug - 25 Aug Air Canada
07 Aug - 20 Aug Iberia
07 Aug - 20 Aug Finnair direct
25 Aug - 29 Aug 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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