AirHint found the following cheapest return flights from Washington (DCA) to Paris (ORY) in September 2025 (see full year).

Return flights

22 Sep - 23 Sep	Air Canada
23 Sep - 30 Sep	jetBlue
13 Sep - 20 Sep	jetBlue
30 Sep - 25 Oct	Iberia
10 Sep - 30 Sep	Iberia
15 Sep - 11 Oct	Scandinavian Airlines
25 Sep - 18 Oct	Iberia
23 Sep - 08 Oct	Iberia
10 Sep - 04 Oct	Iberia
26 Sep - 18 Oct	Finnair
14 Sep - 19 Sep	WestJet
28 Sep - 18 Oct	Iberia
14 Sep - 17 Sep	WestJet
17 Sep - 22 Sep	TAP
22 Sep - 25 Sep	TAP
16 Sep - 24 Sep	Royal Air Maroc
13 Sep - 19 Sep	Royal Air Maroc
28 Sep - 08 Oct	Iberia
14 Sep - 04 Oct	Iberia
18 Sep - 11 Oct	Iberia

Also check the deals for one-way flights from Washington to Paris 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 Washington to Paris in September from 605€

Return flights