AirHint found the following cheapest return flights from Raleigh-durham (RDU) to Zurich (ZRH) in September 2025 (see full year).

Return flights

09 Sep - 16 Sep	United
05 Sep - 12 Sep	United
11 Sep - 18 Sep	United
01 Sep - 07 Sep	United
23 Sep - 30 Sep	United
17 Sep - 24 Sep	Icelandair
15 Sep - 22 Sep	Icelandair
07 Sep - 14 Sep	United
19 Sep - 11 Oct	Frontier Airlines
25 Sep - 02 Oct	United
29 Sep - 06 Oct	United
19 Sep - 26 Sep	United
21 Sep - 28 Sep	United
27 Sep - 04 Oct	United

Also check the deals for one-way flights from Raleigh-durham 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 Raleigh-durham to Zurich in September from 576€

Return flights