Cheapest return flights from Chicago to London in August from $605

Best time to book flights for Chicago (ORD) to London (LGW) flights at AirHint

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

Return flights

11 Aug - 30 Aug Icelandair
09 Aug - 25 Aug Icelandair
27 Aug - 03 Sep Icelandair
20 Aug - 03 Sep Icelandair
23 Aug - 02 Sep Delta
19 Aug - 25 Aug Spirit Airlines
21 Aug - 25 Aug Spirit Airlines
13 Aug - 19 Aug Icelandair
19 Aug - 26 Aug Icelandair
21 Aug - 26 Aug Sun Country Airlines
01 Aug - 06 Aug Icelandair
07 Aug - 17 Aug Icelandair
15 Aug - 24 Aug TAP
29 Aug - 08 Sep Turkish Airlines

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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