AirHint found the following cheapest return flights from Zurich (ZRH) to Boston (BOS) in May 2026 (see full year).

Return flights

16 May - 23 May	Scandinavian Airlines
17 May - 24 May	United
10 May - 16 May	United
14 May - 17 May	United
13 May - 18 May	United
21 May - 03 Jun	United
21 May - 31 May	Air Canada
17 May - 24 May	SWISS	direct
23 May - 06 Jun	United
10 May - 16 May	SWISS	direct
13 May - 18 May	SWISS	direct
21 May - 03 Jun	SWISS	direct
25 May - 25 Jun	Air Canada
23 May - 30 May	SWISS	direct
23 May - 06 Jun	SWISS	direct
25 May - 25 Jun	SWISS	direct

Also check the deals for one-way flights from Zurich to Boston in May.

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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Cheapest return flights from Zurich to Boston in May from $586

Return flights