AirHint found the following cheapest return flights from Philadelphia (PHL) to Zurich (ZRH) in August 2025 (see full year).

Return flights

17 Aug - 26 Aug	American Airlines	direct
03 Aug - 21 Aug	American Airlines	direct
11 Aug - 19 Aug	SWISS
06 Aug - 20 Aug	American Airlines
19 Aug - 26 Aug	United
01 Aug - 21 Aug	American Airlines	direct
02 Aug - 21 Aug	American Airlines	direct
14 Aug - 21 Aug	Delta
23 Aug - 28 Aug	Frontier Airlines
17 Aug - 24 Aug	United
27 Aug - 03 Sep	United
25 Aug - 01 Sep	United
30 Aug - 06 Sep	United

Also check the deals for one-way flights from Philadelphia to Zurich in August.

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.

Book a cheap hotel in Zurich

Cheap car rent in Zurich

Cheapest return flights from Philadelphia to Zurich in August from $548

Return flights