Cheapest return flights from Chicago to London in August from 552€

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

Return flights

16 Aug - 21 Aug Frontier Airlines
11 Aug - 12 Sep Frontier Airlines
15 Aug - 23 Aug Frontier Airlines
08 Aug - 24 Aug Frontier Airlines
31 Aug - 06 Sep Porter Airlines (Canada) Ltd
03 Aug - 12 Aug KLM
01 Aug - 24 Aug Frontier Airlines
21 Aug - 25 Aug Frontier Airlines
27 Aug - 02 Sep Porter Airlines (Canada) Ltd
26 Aug - 02 Sep Porter Airlines (Canada) Ltd
10 Aug - 16 Aug Air France
01 Aug - 03 Aug Air France
07 Aug - 10 Aug Frontier Airlines
15 Aug - 17 Aug Porter Airlines (Canada) Ltd

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.

Book a cheap hotel in London

Cheap car rent in London

Feel free to contact us with any feedback or request another flight research.