Monday, round trip tickets from New York to Israel went on sale for just $400. The fare that is normally in the range of $1,600 for economy class was mistakenly posted and over 5,000 tickets were sold in only 3 hours.
This is a rare occurrence, but several airlines have been caught in the same situation. Several airlines have made attempts in the past to refund the tickets for the mistaken purchase price without much success. It appears that El Al Airlines plan on honoring their fares.