AirHint found the following cheapest return flights from Zurich (ZRH) to Boston (BOS) in September 2025 (see full year).

Return flights

15 Sep - 21 Sep	Condor
15 Sep - 22 Sep	Condor
15 Sep - 28 Sep	Condor
15 Sep - 21 Oct	Condor
16 Sep - 21 Sep	Condor
18 Sep - 21 Sep	Condor
14 Sep - 21 Sep	Condor
18 Sep - 29 Sep	Condor
12 Sep - 15 Sep	Condor
12 Sep - 21 Sep	Condor
13 Sep - 21 Sep	Condor
29 Sep - 06 Oct	Condor
25 Sep - 09 Oct	Condor
30 Sep - 07 Oct	Condor
21 Sep - 05 Oct	Condor
25 Sep - 11 Oct	United
25 Sep - 24 Oct	United
29 Sep - 19 Oct	Condor
25 Sep - 08 Oct	Icelandair
21 Sep - 14 Oct	Condor

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

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 September from 260€

Return flights