AirHint found the following cheapest return flights from Sofia (SOF) to Newark (EWR) in September 2025 (see full year).

Return flights

16 Sep - 29 Sep	Air France
19 Sep - 22 Sep	Air France
19 Sep - 28 Sep	Air France
19 Sep - 19 Oct	Air France
28 Sep - 31 Oct	Ryanair
18 Sep - 19 Oct	Lufthansa
25 Sep - 08 Oct	Lufthansa
10 Sep - 17 Sep	Lufthansa
26 Sep - 03 Oct	Ryanair
12 Sep - 15 Sep	Air France
13 Sep - 20 Sep	Air France
11 Sep - 14 Sep	Air France
16 Sep - 17 Sep	Ryanair
17 Sep - 21 Sep	Ryanair
13 Sep - 27 Sep	Lufthansa
21 Sep - 05 Oct	Lufthansa

Also check the deals for one-way flights from Sofia to Newark 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 Newark

Cheap car rent in Newark

Cheapest return flights from Sofia to Newark in September from 500€

Return flights