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

Return flights

26 Jul - 14 Aug	Aer Lingus
19 Jul - 15 Aug	Iberia
15 Jul - 29 Jul	TAP
19 Jul - 15 Aug	British Airways	direct
19 Jul - 29 Jul	TAP
22 Jul - 06 Aug	TAP
28 Jul - 03 Aug	Turkish Airlines
30 Jul - 03 Aug	Turkish Airlines
31 Jul - 07 Aug	TAP
08 Jul - 21 Jul	Aer Lingus
22 Jul - 30 Jul	Aer Lingus
16 Jul - 26 Jul	TAP
31 Jul - 03 Aug	Turkish Airlines
26 Jul - 02 Aug	Turkish Airlines
19 Jul - 26 Jul	TAP
03 Jul - 11 Jul	TAP
15 Jul - 26 Jul	TAP
05 Jul - 09 Jul	TAP
10 Jul - 31 Jul	TAP
22 Jul - 06 Aug	British Airways	direct

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

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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Cheapest return flights from Chicago to London in July from 563€

Return flights