Cheapest return flights from Boston to London in April from $435

Best time to book flights for Boston (BOS) to London (LHR) flights at AirHint

AirHint found the following cheapest return flights from Boston (BOS) to London (LHR) in April 2025 (see full year).

Return flights

18 Apr - 20 Apr Air Canada
30 Apr - 07 May Icelandair
24 Apr - 29 Apr Icelandair
30 Apr - 05 May Icelandair
29 Apr - 06 May Icelandair
27 Apr - 28 May Icelandair
30 Apr - 16 May Icelandair
07 Apr - 21 Apr Air Canada
08 Apr - 21 Apr Air Canada
20 Apr - 30 Apr Air Canada
25 Apr - 20 May Air Canada
08 Apr - 15 Apr Icelandair
26 Apr - 03 May Air Canada
26 Apr - 11 May Air Canada
24 Apr - 28 Apr Icelandair
07 Apr - 14 Apr Air Canada
06 Apr - 21 Apr Air Canada
06 Apr - 13 Apr Air Canada
26 Apr - 05 May Air Canada
18 Apr - 02 May Air Canada

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

Skyscanner

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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