Error Fare flights from Madrid, Spain to Boston, USA for only €103 roundtrip with Air Canada, Lufthansa and Swiss International Air Lines.
Appears to be a self-dump.
WE STRONGLY RECOMMEND YOU DELAY MAKING FURTHER PLANS AS MUCH AS POSSIBLE.
BECAUSE THIS IS AN ERROR-FARE, THERE IS ALWAYS THE SMALL CHANCE THE AIRLINE MAY CANCEL THE TICKET.
Limited availability from January to February 2020
Swiss International Air Lines
Allow the search to complete, then click an OTA to view the advertised price.
Booking currency is in GBP: