Icelandair has round-trip flights from Newark/New York (EWR) to Reykjavik (KEF) for $397-$407, NONSTOP. Flights September to April. Departures on Monday, Tuesday, Wednesday, Saturday, and Sunday.
Some small OTAs on Skyscanner and Google have this for about $376; which is cheaper than the airline. If you plan on booking there, beware of any site that charges a fee to cancel a ticket within the 24-hour “free” period. Use unknown booking sites at your own risk.



