Air traffic control reportedly said nothing was showing on their radar systems, to which the unnamed pilot replied: "OK. It was moving so fast."
She added that after approaching on the left side, it "rapidly veered to the north". She described it as a "very bright light" that "disappeared at very high speed".
The pilot of Virgin Airlines flight VS76 from Orlando to Manchester then reported seeing a similar thing, the website reports.
He described it as a "meteor or another object making some kind of re-entry" and said it was "multiple objects following the same sort of trajectory – very bright from where we were."
Both planes were flying in high level airspace - an altitude from between 28,500ft and 42,000ft.
Airlive says a third pilot also saw the bizarre lights and that the Irish Aviation Authority has filed a report with the sightings due to be "investigated under the normal confidential occurrence investigation process".