Cheapest return flights from Boston to London in April from 420€

AirHint found the following cheapest return flights from Boston (BOS) to London (LHR) in April 2026 (see full year).

Return flights

02 Apr - 09 Apr Air Canada
25 Apr - 16 May Aer Lingus
28 Apr - 19 May Aer Lingus
16 Apr - 09 May Aer Lingus
15 Apr - 09 May United
15 Apr - 22 Apr United
22 Apr - 29 Apr United
26 Apr - 01 May SWISS
04 Apr - 25 Apr Aer Lingus
07 Apr - 11 May Aer Lingus
15 Apr - 22 Apr British Airways direct
11 Apr - 19 Apr British Airways direct
22 Apr - 29 Apr British Airways direct
02 Apr - 09 Apr British Airways direct
12 Apr - 19 Apr British Airways direct
04 Apr - 25 Apr British Airways direct
25 Apr - 16 May British Airways direct
15 Apr - 09 May British Airways direct
28 Apr - 19 May British Airways direct
16 Apr - 09 May British Airways direct

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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