Cheapest return flights from Boston to London in May from 370€

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

Return flights

11 May - 18 May TAP
12 May - 19 May TAP
08 May - 16 May TAP
06 May - 12 May SWISS
07 May - 13 May SWISS
03 May - 03 Jun TAP
14 May - 21 May Icelandair
07 May - 11 May TAP
27 May - 31 May TAP
04 May - 10 May SWISS
06 May - 11 May TAP
18 May - 16 Jun Icelandair
16 May - 08 Jun LEVEL
31 May - 08 Jun Icelandair
01 May - 26 Jun Turkish Airlines
27 May - 17 Jun Aer Lingus
25 May - 16 Jun Aer Lingus
29 May - 06 Jun LEVEL

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

Powered by

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

Feel free to contact us with any feedback or request another flight research.