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

Return flights

04 Jun - 14 Jun	Aer Lingus
01 Jun - 08 Jun	Icelandair
04 Jun - 08 Jun	Icelandair
04 Jun - 12 Jun	Icelandair
02 Jun - 11 Jun	Icelandair
11 Jun - 20 Jun	Aer Lingus
10 Jun - 17 Jun	Air Canada
05 Jun - 13 Jun	Icelandair
11 Jun - 18 Jun	Porter Airlines (Canada) Ltd
19 Jun - 21 Jun	Porter Airlines (Canada) Ltd
23 Jun - 05 Jul	Icelandair
30 Jun - 02 Jul	Air Canada
28 Jun - 04 Jul	Air Canada
24 Jun - 05 Jul	Iberia
26 Jun - 09 Jul	Iberia
30 Jun - 31 Jul	Icelandair
25 Jun - 05 Jul	Air Canada
14 Jun - 07 Jul	Air Canada
26 Jun - 05 Jul	Air Canada
27 Jun - 13 Jul	Aer Lingus

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.

Book a cheap hotel in London

Cheap car rent in London

Cheapest return flights from Boston to London in June from $735

Return flights