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

Return flights

27 Aug - 10 Sep	Spirit Airlines
04 Aug - 20 Aug	Delta
05 Aug - 12 Aug	British Airways
20 Aug - 03 Sep	British Airways
21 Aug - 28 Aug	American Airlines
05 Aug - 11 Aug	Delta
03 Aug - 10 Aug	Spirit Airlines

Also check the deals for one-way flights from Indianapolis to London in August.

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 August from $504

Return flights