Maybe some intending to fly were warned and changed plans.
https://uproxx.com/tv/9-stars-who-escaped-death/
>3. Kim Cattrall was originally booked on Pan Am Flight 103, which was destroyed by a terrorist bomb in 1988, killing all 243 passengers and 16 crew on board in what’s now known as the Lockerbie bombing. She changed her reservation at the last minute to complete some shopping. She had to stop at Harrods to buy her mom a Wedgwood teapot, a decision that saved her life.
>4. The Four Tops — The quartet who defined the Motown sound in the 1960s also missed Pan Am Flight 103 from London to New York when they got hung up filming the television show “Top of the Pops” in London.
>5. Johnny Rotten — The Sex Pistols’ frontman and his wife were also booked on Pan Am Flight 103, but they missed the flight because his wife waited until the last minute to pack, and they ended up getting in a huge fight, realizing only later that the fight saved their lives.