How far in advance do I need to be at the various airports for interisland flights?

HNL-OGG?

OGG-LIH?

LIH-HNL? And, if I reserve a flight that arrives in HNL at 2:19 p.m. that should give me plenty of time for my Delta flight to Atlanta which is at 3:30 p.m. right?
Bags will be checked straight thru.

7 more days to go!!!!!

90 minutes is the rule. I have been in some horrendous security lines in Maui. You should check with Delta regarding their check-in requirements. If the plane is full, you could risk losing your seat if you don't obey their check-in time rule. Personally, I think 60 minutes before a mainland flight is cutting it too close.

You can check-in online for your Delta flight but you need to go through security again when transferring from the interisland to the main terminal, don't you?

no Patty, you don't have to go through security again. Follow the signs to the main terminal or take the wiki-wiki. There is an agricultural inspection between the interisland and main terminal, but never a big line. The HNL security can be horrendous at times, so I would give myself at least 1.5 hours checking in at that airport if coming in from Waikiki or elsewhere on Oahu. You should be o.k. with your 2:19-3:30 flight if you check in with Delta at the gate, not the front check in counter (then you will have to go through security again)

Thanks

slight correction...if you are flying interisland on go! or island air, you will have to go through the main security but if on Aloha or Hawaiian, just walk to the International terminal, no security to go through.

All flights are Aloha and/or Hawaiian Air.

Thanks, Dennis!