Cheapest return flights from Boston to London in April from 400€

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

Return flights

20 Apr - 27 Apr Air Canada
21 Apr - 30 Apr TAP
20 Apr - 04 May TAP
02 Apr - 07 Apr KLM
08 Apr - 23 Apr British Airways
07 Apr - 23 Apr British Airways
04 Apr - 14 Apr Air Canada
22 Apr - 30 Apr British Airways
24 Apr - 07 May British Airways
16 Apr - 22 Apr Air Canada
09 Apr - 15 Apr Air Canada
13 Apr - 20 Apr Air Canada
25 Apr - 03 May Air Canada
29 Apr - 10 May Aer Lingus
22 Apr - 02 May Delta
25 Apr - 03 May KLM direct
24 Apr - 07 May Finnair direct
22 Apr - 02 May Air France direct
29 Apr - 10 May Finnair direct
20 Apr - 04 May British Airways direct

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

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