But, unfortunately for fliers who were lucky enough to snag one of those fares, it appears as though United will not honor them.

In a statement to Today in the Sky, United says:

"United is voiding the bookings of several thousand individuals who were attempting to take advantage of an error a third-party software provider made when it applied an incorrect currency exchange rate, despite United having properly filed its fares. Most of these bookings were for travel originating in the United Kingdom, and the level of bookings made with Danish Kroner as the local currency was significantly higher than normal during the limited period that customers made these bookings."