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

Return flights

02 Jun - 07 Jun	Lufthansa
12 Jun - 19 Jun	SWISS
16 Jun - 30 Jun	Lufthansa
04 Jun - 19 Jun	Lufthansa
05 Jun - 21 Jun	Lufthansa
08 Jun - 20 Jun	Lufthansa
02 Jun - 16 Jun	Lufthansa
05 Jun - 12 Jun	Lufthansa
10 Jun - 14 Jun	Lufthansa
09 Jun - 13 Jun	Lufthansa
11 Jun - 02 Jul	Lufthansa
17 Jun - 01 Jul	Lufthansa
18 Jun - 02 Jul	Lufthansa
18 Jun - 07 Jul	Lufthansa
26 Jun - 04 Jul	Lufthansa
24 Jun - 11 Jul	Lufthansa
29 Jun - 11 Jul	Lufthansa
29 Jun - 13 Jul	Austrian Airlines
25 Jun - 09 Jul	Lufthansa
26 Jun - 05 Jul	Lufthansa

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

Cheap car rent in Boston

Cheapest return flights from London to Boston in June from 386€

Return flights