Norwegian offers one way fare deals. Aeroflot offers almost 50% off round trip fares from LAX to Europe. These same one way discount fares from JFK are available, but there is more competition in JFK besides Norwegian. From LAX, these one way fares are hundreds of dollars less than other airlines, except Norwegian for some dates. Most airlines charge about 75% or more the round trip fare for a one way international flight between USA and Europe.
The primary difference between Aeroflot and Norwegian is far more low fare availability with Aeroflot, lower bag fees and Skyteam Alliance miles with Delta SkyMiles or another frequent flyer program..
Norwegian has free Wi-Fi.
One Way Fare Deals from Los Angeles LAX to Europe in September – October 2015:
Los Angeles LAX – London LHR Aeroflot $388 September 8
Los Angeles LAX – Zurich ZHR Aeroflot $388 September 8
Los Angeles LAX – Geneva GVA Aeroflot $388 September 8
Los Angeles LAX – Barcelona BCN $388 September 8
Los Angeles LAX – Budapest BUD Aeroflot $388 September 8
Los Angeles LAX – Amsterdam AMS September 8 Aeroflot $458
Los Angeles LAX – Amsterdam AMS October 7 Norwegian $422
Los Angeles LAX – Athens ATH October 7 Aeroflot $428
Los Angeles LAX – Copenhagen CPH October 7 Norwegian $263
Los Angeles LAX – London LGW October 7 Norwegian $398
Los Angeles LAX – Madrid MAD Aeroflot $388 October 7 (Norwegian $365)
Los Angeles LAX – Munich MUC October 7 Aeroflot $458
Los Angeles LAX – Nice NCE October 7 Norwegian $396
Los Angeles LAX – Oslo OSL October 7 Norwegian $320
Los Angeles LAX – Paris ORY October 7 Norwegian $334
Los Angeles LAX – Rome FCO Norwegian $396 October 7 (Aeroflot $458)
Los Angeles LAX – Stockholm ARN October 7 Norwegian $311
Los Angeles LAX – Venice VCE October 7 Aeroflot $458
In some instances you can get an overall lower fare flying Norwegian or Aeroflot to Europe and the other airline back. Or fly to one low fare city outbound and return from a different lower fare city.