AirHint found the following cheapest return flights from Indianapolis (IND) to London (LHR) in July 2025 (see full year).

Return flights

28 Jul - 07 Aug	Air Canada
28 Jul - 08 Aug	Air Canada
22 Jul - 08 Aug	Air Canada
24 Jul - 14 Aug	Delta
23 Jul - 07 Aug	Air Canada
24 Jul - 07 Aug	Air Canada
24 Jul - 08 Aug	Air Canada
30 Jul - 06 Aug	United
16 Jul - 24 Jul	British Airways
19 Jul - 24 Jul	Spirit Airlines
25 Jul - 07 Aug	Air France
24 Jul - 05 Aug	British Airways
08 Jul - 18 Jul	Scandinavian Airlines

Also check the deals for one-way flights from Indianapolis 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 Indianapolis to London in July from 528€

Return flights