Cheapest return flights from Boston to London in May from $483

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

Return flights

07 May - 10 May Aer Lingus
04 May - 09 May Icelandair
19 May - 10 Jun Icelandair
18 May - 16 Jun Icelandair
22 May - 30 May Aer Lingus
20 May - 24 May Icelandair
19 May - 31 May Icelandair
18 May - 25 May Iberia
19 May - 25 May Iberia
21 May - 26 May Aer Lingus
10 May - 31 May Icelandair
25 May - 02 Jun Aer Lingus
01 May - 08 May LEVEL
25 May - 02 Jun jetBlue direct
28 May - 04 Jun LEVEL

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

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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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