Cheapest return flights from Boston (BOS) to London (STN), May

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
31 May 07 Jun KLM
24 May 01 Jun KLM
29 May 07 Jun KLM
31 May 09 Jun Icelandair
26 May 09 Jun Air Canada
26 May 02 Jun Aer Lingus
25 May 03 Jun Lufthansa
25 May 16 Jun Lufthansa
31 May 10 Jun Porter Airlines (Canada) Ltd
25 May 04 Jun Lufthansa
25 May 31 May Lufthansa
23 May 27 May Lufthansa
23 May 26 May Lufthansa
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deals for one-way flights from Boston to London in May.

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Updated May 22, 2026.

About these fares

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