Cheapest return flights from Boston to London in April from $541

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 2026 (see full year).

Return flights

08 Apr - 17 Apr Icelandair
12 Apr - 18 Apr Icelandair
01 Apr - 16 Apr Icelandair
01 Apr - 22 Apr TAP
14 Apr - 17 Apr TAP
01 Apr - 19 Apr Icelandair
15 Apr - 30 Apr Scandinavian Airlines
01 Apr - 16 Apr Finnair direct
01 Apr - 19 Apr Iberia direct
07 Apr - 01 May SWISS
08 Apr - 17 Apr British Airways direct

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

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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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