I may need to go to Maui for the day on Friday. Depending on exact flights, that will cost around $160. Randomly searching Google Flights for short routes elsewhere on the same day and taking the first result I see, without regard to whether the schedule makes sense, I see a range from $91 for LAX-SFO (basic economy) to $322 for ORD-IND, with more fares higher than HNL-OGG than lower. Pricing on <500 mile routes appears to vary primarily based on market conditions, not distance, although Hawaii is generally an exception to that (Big Island routes from HNL are consistently higher than OGG and LIH).