Cheapest return flights from Boston to London in April from $481

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

Return flights

26 Apr - 01 May Aer Lingus
03 Apr - 10 Apr Air Canada
28 Apr - 19 May Air Canada
25 Apr - 03 May Air Canada
12 Apr - 18 Apr Air Canada
16 Apr - 09 May Air Canada
15 Apr - 09 May Air Canada
04 Apr - 09 Apr Air Canada
02 Apr - 06 Apr Air Canada
13 Apr - 20 Apr United
15 Apr - 20 Apr United
07 Apr - 11 May Air Canada
23 Apr - 30 Apr United
15 Apr - 20 Apr British Airways direct
04 Apr - 09 Apr American Airlines direct
12 Apr - 18 Apr American Airlines direct
25 Apr - 03 May British Airways direct
26 Apr - 01 May American Airlines direct
15 Apr - 09 May British Airways direct
28 Apr - 19 May American Airlines 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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