Hawaiian Airlines has extended the time window of flights eligible for their offer to waive reservation change fees for guests holding tickets for travel to and from Hilo and Kona due to the Kilauea Volcano eruption.

Guests will be permitted a one-time reservation change with a waiver of change fee provided that the ticket was issued Thursday or earlier and the affected flight was scheduled for travel from Thursday through Sunday.

Changes must be made to the same class of service, origin and destination, for new flights no later than May 13. For changes made to new flights after May 13, the change fee will be waived but the applicable difference in fare will be collected.

Changes may be made by calling Hawaiian Airlines’ reservations department at 1-800-367-5320.