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

Return flights

23 Sep - 30 Sep	Air Canada
22 Sep - 29 Sep	Air Canada
29 Sep - 06 Oct	Air Canada
10 Sep - 17 Sep	Air Canada
30 Sep - 07 Oct	Air Canada
28 Sep - 05 Oct	Iberia
24 Sep - 01 Oct	Air Canada
09 Sep - 16 Sep	Air Canada
15 Sep - 22 Sep	Iberia
17 Sep - 24 Sep	Air Canada
19 Sep - 26 Sep	Icelandair
14 Sep - 21 Sep	Iberia
01 Sep - 08 Sep	Air Canada
08 Sep - 15 Sep	Air Canada
25 Sep - 02 Oct	Iberia
26 Sep - 03 Oct	Iberia
17 Sep - 05 Oct	Delta

Also check the deals for one-way flights from Boston to Nice 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 Nice in September from 320€

Return flights