AirHint found the following cheapest return flights from New York (LGA) to Barcelona (BCN) in September 2025 (see full year).

Return flights

20 Sep - 03 Oct	Air Canada
23 Sep - 02 Oct	United
21 Sep - 23 Oct	Lufthansa
30 Sep - 25 Oct	Air Canada
23 Sep - 09 Oct	United
29 Sep - 08 Oct	Delta
22 Sep - 22 Oct	United
26 Sep - 03 Oct	Delta
26 Sep - 01 Oct	Delta
29 Sep - 17 Oct	Delta
14 Sep - 26 Sep	Air Canada
16 Sep - 19 Sep	Air Canada
13 Sep - 24 Sep	Lufthansa
15 Sep - 22 Sep	United
10 Sep - 17 Sep	Air Canada
08 Sep - 16 Sep	Air Canada
09 Sep - 16 Sep	Air Canada
08 Sep - 18 Sep	United
07 Sep - 16 Sep	United
16 Sep - 22 Sep	Lufthansa

Also check the deals for one-way flights from New York to Barcelona 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 Barcelona

Cheap car rent in Barcelona

Cheapest return flights from New York to Barcelona in September from 297€

Return flights