Cheapest return flights from Washington to London in June from $671

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

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

Return flights

04 Jun - 08 Jun Air Canada
02 Jun - 10 Jun Porter Airlines (Canada) Ltd
10 Jun - 17 Jun Air Canada
06 Jun - 17 Jun Porter Airlines (Canada) Ltd
17 Jun - 22 Jun Air Canada
09 Jun - 12 Jun Porter Airlines (Canada) Ltd
09 Jun - 18 Jun Porter Airlines (Canada) Ltd
03 Jun - 09 Jun Air Canada
02 Jun - 07 Jun Porter Airlines (Canada) Ltd
10 Jun - 15 Jun Air Canada
25 Jun - 09 Jul Scandinavian Airlines
30 Jun - 07 Jul ITA Airways
25 Jun - 01 Jul Scandinavian Airlines
28 Jun - 04 Jul Frontier Airlines
22 Jun - 21 Jul Frontier Airlines
16 Jun - 04 Jul Frontier Airlines
23 Jun - 10 Jul Scandinavian Airlines
29 Jun - 13 Jul ITA Airways
27 Jun - 07 Jul Frontier Airlines
26 Jun - 04 Jul Frontier Airlines

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

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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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