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

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
01 May 06 May Icelandair
01 May 08 May Icelandair
06 May 11 May Icelandair
19 May 28 May Icelandair
29 May 04 Jun Icelandair
19 May 26 May Icelandair
22 May 29 May Icelandair
08 May 16 May Icelandair
11 May 25 May SWISS
17 May 28 May Austrian Airlines
09 May 15 May Austrian Airlines
29 May 04 Jun Finnair
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deals for one-way flights from London to Boston in May.

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Updated Jun 24, 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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