All passengers in Europe are safeguarded by EC 261 in the event of flight cancellations, particularly those that occur at the last minute. Passengers may be eligible for Hawaiian Airlines Delay Compensation, up to US$700 per person, if any Hawaiian Airlines flights are cancelled fewer than 14 days before they were scheduled to leave from a European airport.
https://www.travomonk.com/flig....ht-delay/hawaiian-ai