US domestic travel to Hawaii

Based on personal experience with travel into Hawai'i from the mainland United States during Covid-19, the official FAQ is the best page to start with for current details.

It is more straightforward now for international travelers:

Beginning November 8, the State of Hawai‘i will align with federal international requirements. There will be no additional State of Hawai?i requirements for passengers flying directly into Hawai?i from an international destination.

However, for domestic travelers from the mainland US, the short answer to your question is yes, you do need to provide a bit more health information and jump through a couple of additional hoops for Hawai'i that are not required for flying elsewhere within the United States:

Travelers must still create an account in Safe Travels Hawai‘i, enter their trip details, upload their vaccination documentation, sign the legal attestations, and within 24 hours of departing to Hawai‘i, complete the online health questionnaire.

When we visited Hawai'i before vaccines were readily available, you needed to get a NAAT Covid test from a short list of Hawai'i-approved testing facilities, upload the test results into Hawai'i's specific "Safe Travels Digital Platform" before the flight, and print out the generated QR code to bring with you to Hawai'i.

Now, "if you meet the requirements of the Vaccine Exception Program, you do not need to take a COVID-19 pre-travel test" when flying from the mainland US, but you do still need to make sure that you upload your vaccination documentation and complete the other requirements well before the flight.

Don't just show up with paper, our experience was that the airlines were not checking adequately ahead of time, and those who did not fill out the online information and have a QR code were herded elsewhere, presumably for quarantine or to be sent home.

Happy travels!