Even if your flight wasn't canceled, you should still take notice.

Hawaiian Airlines Is Canceling Tons of Flights — Here’s What to Know (Video)

On Friday, Hawaiian Airlines either canceled or deferred a number of flights between California and Hawaii — and disrupted travel plans for hundreds of travelers.

According to the airline, the schedule “adjustments” are due to delays in shipments of their new Airbus A321neos.

“We regret being unable to provide the full scope of services we had hoped to offer out of the Bay Area,” Hawaiian’s vice president for revenue management and network planning, Brent Overbeek, said in a statement.

The flights affected include a seasonal summer service between San Francisco and Honolulu, and a new flight between Oakland and Kona. Flights between Oakland and Lihu’e are being deferred from April to mid-June.

Travelers booked on these flights are being contacted directly by the airline and re-accommodated on other (not necessarily comparable) itineraries. If you have a flight number that matches the affected route and dates and have not heard from Hawaiian, call the airline's reservations department at 1-800-367-5320.

For example, SFGate noted that some flights to Kona and Lihu’e may no longer be non-stop, forcing travelers to endure much longer trips with connections in Honolulu.

While this setback is an obvious disappointment for travelers with reservations on these flights, everyone with an interest in flying to Hawaii should take note.

After all, the A321neo delivery promised to not only increase the number of flights to Hawaii (making the Aloha State more accessible than ever), but also to slash prices on the route.