AirHint found the following cheapest return flights from Seattle (SEA) to Paris (CDG) in August 2025 (see full year).

Return flights

15 Aug - 21 Aug	Icelandair
13 Aug - 29 Aug	Icelandair
18 Aug - 26 Aug	Icelandair
16 Aug - 24 Aug	Icelandair
19 Aug - 26 Aug	Icelandair
17 Aug - 25 Aug	Icelandair
20 Aug - 24 Aug	Icelandair
25 Aug - 10 Sep	Icelandair
03 Aug - 19 Aug	Icelandair
14 Aug - 19 Aug	Icelandair
19 Aug - 16 Sep	Icelandair
17 Aug - 21 Aug	Aer Lingus
29 Aug - 08 Sep	Icelandair
28 Aug - 01 Sep	Icelandair
19 Aug - 16 Sep	Air France	direct
25 Aug - 10 Sep	Delta	direct
28 Aug - 01 Sep	Air France	direct
29 Aug - 08 Sep	Air France	direct

Also check the deals for one-way flights from Seattle to Paris 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.

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Cheapest return flights from Seattle to Paris in August from 423€

Return flights