Help attending fathers funeral

Regrettably, my friends' children have lost their father, Evis McGee, who passed away at the young age of 40. His death was unexpected, occurring while he was residing in Mississippi, USA. The funeral is scheduled for the end of January, and without assistance, the children will be unable to attend and pay their final respects to their father. They are only 18, 16, and 13 years old. The total cost for flights and accommodation will be approximately £3000. Any financial support would be immensely appreciated.