San Francisco to Amsterdam is $333 round trip with Icelandair for several dates January to March 2019. The itinerary is a good schedule with mid-day departures and arrival in Amsterdam and arrival back in SFO at 6:55pm for a non-rush hour journey back home.
Most dates in these months are priced from $440s to $480s.
Icelandair San Francisco SFO – Reykjavik KEF – Amsterdam AMS – KEF – SFO
Icelandair has the lowest ticket prices from San Francisco to several European cities for winter 2019.