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

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
12 May 26 May Icelandair
05 May 12 May Icelandair
03 May 19 May Icelandair
15 May 05 Jun Icelandair
08 May 15 May Austrian Airlines
22 May 28 May Lufthansa
11 May 19 May Icelandair
12 May 26 May Finnair
Direct Flight
24 May 31 May Icelandair
03 May 19 May Finnair
Direct Flight
08 May 15 May British Airways
Direct Flight
29 May 05 Jun Lufthansa
27 May 01 Jun Austrian Airlines
27 May 01 Jun Finnair
Direct Flight
15 May 05 Jun Finnair
Direct Flight
29 May 05 Jun Finnair
Direct Flight
28 May 04 Jun Finnair
Direct Flight
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deals for one-way flights from London to Boston in May.

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Updated Jul 4, 2026.

About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

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