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

Return flights

27 Sep - 04 Oct	United	direct
26 Sep - 05 Oct	United	direct
25 Sep - 08 Oct	Ryanair
25 Sep - 30 Sep	Ryanair
25 Sep - 02 Oct	Ryanair
23 Sep - 30 Sep	Ryanair
25 Sep - 28 Sep	Ryanair
25 Sep - 01 Oct	Ryanair
24 Sep - 29 Sep	Ryanair
24 Sep - 27 Sep	Ryanair
23 Sep - 27 Sep	Ryanair
23 Sep - 28 Sep	Ryanair
24 Sep - 28 Sep	Ryanair
23 Sep - 04 Oct	Ryanair
23 Sep - 25 Sep	Ryanair
25 Sep - 28 Sep	United	direct
25 Sep - 02 Oct	United	direct
24 Sep - 05 Oct	United	direct
25 Sep - 04 Oct	United	direct
23 Sep - 04 Oct	United	direct

Also check the deals for one-way flights from Shannon 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 Shannon to Newark in September from 377€

Return flights