SkyTeam airlines including Delta, Air France, KLM have several cities in Spain on sale from $438 round trip for flights August 2017 to April 2018.
Barcelona is one city with higher fares in $600s than most other cities in Spain on sale. I also did not see low fares to Tenerife TFN $577.
In my experience, SkyTeam discount tickets on Google Flights are less likely to include a bookable direct link to the airline. Momondo.com generally pulls up a fare similar or lower than ticket price shown on Google Flights through links below.
Possibly more cities are on sale.
Air France ticket for Air France outbound and KLM inbound.
Los Angeles LAX – Paris CDG – Madrid MAD – Amsterdam AMS – LAX
$481.25 round trip Sun April 8 – Sun April 15
Momondo.com search shows these same flights available through online travel agency FlightsMojo.com.
Los Angeles LAX – Paris CDG – Madrid MAD – Amsterdam AMS – LAX
$438 Sun April 8 – Sun April 15
FlightsMojo.com online travel agency ticket
