Are you superstitious about Friday the 13th?

Would you board flight 666 to HEL on Friday the 13th?

For superstitious travelers that might be tempting fate. But Finnair passengers on AY666 to Helsinki - which has the 3 letter designation HEL - don't seem too bothered. Friday's flight is almost full.

Finnair pilot Juha-Pekka Keidasto, who will fly the flight from Copenhagen to Helsinki, says "it has been quite a joke among the pilots."

Are you superstitious about Friday the 13th? According to Business Insider, the fear of Friday the 13th is also known as friggatriskaidekaphobia â?? which is named after Friday's namesake, the Norse goddess â??Frigg.â??

Friday the 13th is considered bad luck in many countries and the number 666 also has negative biblical associations.

Some airlines take these fears seriously and don't have seat row 13 on board, and tall buildings skip the 13th floor. However, the negative connotations of Friday the 13th are a relatively new phenomenon for northern Europeans and Finnair keeps row 13.

Business Insider reports that about $700 to $800 million is lost worldwide each Friday the 13th because some people refuse to conduct business.

Where does all of this superstition come from? Business Insider reports that it could link back to a number of religious events dating back thousands of years. Read more here.

Track Finnair flight AY666 to HEL here.

(Information from the Associated Press was used in this report.)