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

Return flights

01 Sep - 11 Sep	Fly Play
05 Sep - 12 Sep	Brussels Airlines
01 Sep - 12 Sep	Condor
02 Sep - 23 Sep	Icelandair
05 Sep - 13 Sep	Fly Play
24 Sep - 01 Oct	Air Canada
13 Sep - 24 Sep	Icelandair
09 Sep - 18 Sep	Icelandair
11 Sep - 18 Sep	Icelandair
05 Sep - 14 Sep	Icelandair
13 Sep - 22 Sep	Icelandair
23 Sep - 07 Oct	Icelandair
23 Sep - 12 Oct	Icelandair
27 Sep - 04 Oct	Icelandair
26 Sep - 02 Oct	Icelandair
28 Sep - 05 Oct	Icelandair
24 Sep - 04 Oct	United
24 Sep - 01 Oct	Air France	direct
24 Sep - 03 Oct	Air France	direct
23 Sep - 07 Oct	Air France	direct

Also check the deals for one-way flights from Boston 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 Boston to Paris in September from $412

Return flights