AirHint found the following cheapest return flights from Paris (CDG) to Boston (BOS) in September 2025 (see full year).

Return flights

25 Sep - 30 Sep	Condor
21 Sep - 23 Sep	Condor
22 Sep - 28 Sep	Condor
21 Sep - 28 Sep	Condor
25 Sep - 29 Sep	Condor
22 Sep - 25 Sep	Condor
30 Sep - 06 Oct	Condor
21 Sep - 30 Sep	Condor
30 Sep - 30 Sep	Condor
28 Sep - 05 Oct	Condor
28 Sep - 02 Oct	Condor
24 Sep - 30 Sep	Icelandair
24 Sep - 01 Oct	Icelandair
26 Sep - 30 Sep	Scandinavian Airlines
30 Sep - 11 Oct	Icelandair
30 Sep - 15 Oct	Condor
30 Sep - 01 Oct	Condor
21 Sep - 09 Oct	Condor
27 Sep - 05 Oct	easyJet
27 Sep - 07 Oct	Condor

Also check the deals for one-way flights from Paris to Boston 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 Paris to Boston in September from $466

Return flights