Big sale from Boston to many cities across Spain and Portugal with all three alliances. SkyTeam member Air Europe has lowest fares, with nonstop flights to Madrid. Oneworld and Star Alliance have lowest fares to some cities.
Lowest fares in the $390s and low $400s are for travel in May and from mid-August to February 2018.
Air Europa even has Porto and Lisbon under $600 round trip for July travel.
More than a dozen cities across Spain have low fares, along with Lisbon, Porto and Azores island airports of Portugal.
Air Europa Boston BOS – Madrid MAD – Boston BOS
Iberia Airlines Boston BOS – Madrid MAD – Palma Mallorca PMI – MAD – BOS
Lufthansa ticket for Swiss Airlines operated flights
Boston BOS – Zurich ZRH – Madrid MAD – Zurich ZRH – Boston BOS