Cheapest return flights from London to Washington in August from 647€

Best time to book flights for London (LHR) to Washington (IAD) flights at AirHint

AirHint found the following cheapest return flights from London (LHR) to Washington (IAD) in August 2025 (see full year).

Return flights

25 Aug - 03 Sep Scandinavian Airlines
01 Aug - 31 Aug Scandinavian Airlines
05 Aug - 14 Aug Aer Lingus
21 Aug - 10 Sep Scandinavian Airlines
11 Aug - 18 Aug Aer Lingus
04 Aug - 25 Aug Scandinavian Airlines
09 Aug - 30 Aug Scandinavian Airlines
15 Aug - 30 Aug Scandinavian Airlines
13 Aug - 27 Aug Scandinavian Airlines
11 Aug - 25 Aug Aer Lingus
13 Aug - 31 Aug Scandinavian Airlines
07 Aug - 24 Aug British Airways
21 Aug - 10 Sep Air France direct
18 Aug - 05 Sep Virgin Atlantic
18 Aug - 05 Sep British Airways direct
25 Aug - 03 Sep Virgin Atlantic direct

Also check the deals for one-way flights from London to Washington 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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