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

Return flights

11 Sep - 14 Sep	Spirit Airlines
08 Sep - 16 Sep	Air Canada
09 Sep - 17 Sep	Air Canada
10 Sep - 18 Sep	Air Canada
11 Sep - 19 Sep	Air Canada
14 Sep - 22 Sep	Air Canada
13 Sep - 21 Sep	Air Canada
21 Sep - 01 Oct	Air Canada
15 Sep - 23 Sep	Air Canada
15 Sep - 24 Sep	Air Canada
16 Sep - 24 Sep	Air Canada

Also check the deals for one-way flights from Houston to Zurich 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 Houston to Zurich in September from $656

Return flights