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

Return flights

08 May - 17 May	Icelandair
08 May - 12 May	Icelandair
15 May - 18 May	Icelandair
14 May - 18 May	Icelandair
15 May - 19 May	Icelandair
10 May - 17 May	Icelandair
01 May - 09 May	Icelandair
12 May - 19 May	TAP
18 May - 25 May	Scandinavian Airlines
21 May - 04 Jun	Condor
13 May - 27 May	Aer Lingus
28 May - 02 Jun	Condor
26 May - 09 Jun	Condor
23 May - 06 Jun	Aer Lingus
26 May - 09 Jun	SWISS	direct
21 May - 04 Jun	SWISS	direct
23 May - 06 Jun	SWISS	direct
28 May - 02 Jun	SWISS	direct

Also check the deals for one-way flights from Boston to Zurich 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 Boston to Zurich in May from 413€

Return flights