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

Return flights

28 Sep - 14 Oct	Condor
22 Sep - 29 Sep	Condor
22 Sep - 30 Sep	Condor
30 Sep - 05 Oct	Condor
28 Sep - 05 Oct	Condor
25 Sep - 02 Oct	Condor
28 Sep - 12 Oct	Condor
23 Sep - 30 Sep	Condor
23 Sep - 29 Sep	Condor
25 Sep - 28 Sep	Condor
22 Sep - 08 Oct	Condor
26 Sep - 29 Sep	Lufthansa
27 Sep - 18 Oct	Scandinavian Airlines
28 Sep - 18 Oct	Scandinavian Airlines
22 Sep - 11 Oct	Aer Lingus
26 Sep - 18 Oct	Scandinavian Airlines
26 Sep - 28 Sep	Condor
19 Sep - 25 Sep	SWISS
26 Sep - 30 Sep	Delta	direct
26 Sep - 28 Sep	Delta	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.

Book a cheap hotel in Paris

Cheap car rent in Paris

Cheapest return flights from Boston to Paris in September from 413€

Return flights