AirHint found the following cheapest return flights from Boston (BOS) to London (LHR) in June 2026 (see full year).

Return flights

18 Jun - 02 Jul	Icelandair
18 Jun - 26 Jun	Icelandair
11 Jun - 18 Jun	Icelandair
01 Jun - 10 Jun	Icelandair
15 Jun - 23 Jun	Icelandair
18 Jun - 26 Jun	Virgin Atlantic	direct
18 Jun - 02 Jul	Virgin Atlantic	direct
11 Jun - 18 Jun	Virgin Atlantic	direct
25 Jun - 10 Jul	Delta
25 Jun - 05 Jul	Delta	direct
25 Jun - 10 Jul	Finnair	direct
15 Jun - 23 Jun	Virgin Atlantic	direct
12 Jun - 13 Jul	Air Canada
12 Jun - 13 Jul	British Airways	direct

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

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 Boston to London in June from 414€

Return flights