United flights to Honolulu

[TomK]

They would need to look for another flight from the United Ap or website.

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If you book them on Southwest or Hawaiian , they will have to claim their bags in HNL, check with United and go back through security .

I do this quite often, at least I did before the pandemic. Book interisland flights and then book the mainland flight separately from HNL - it used to save quite a lot of money. It's a hassle but there is a wiki-wiki shuttle outside baggage claim that will take you between terminals and drop you near the airline check-in desks. I doubt it's a good option for a group but for a single traveler it's worth looking into.