It's relatively easy to find this price for travel on Mondays, Tuesdays, Wednesdays, and Thursdays, from late August through early November. No minimum stay required.
Searching AA.com, I found seats departing Boston BOS on Monday, September 9, returning from Kona KOA on Thursday, September 19.
On American, this price includes a carry-on bag plus one small personal item.
On United, Basic Economy fares only include one small personal item. A full-size carry-on bag is not allowed.
Both carriers charge $30 each way for a checked piece of luggage.
On American, these are regular economy fares and include advanced seat assignments. United does not allow for seat selection at this price.
These are the cheapest flights for this time period, although American is the better choice since it doesn't book into the restrictive Basic Economy bucket, the inventory is much more limited than the dates United is offering seats.
See our fare details for booking info to Maui.
See our fare details for booking info to Kona.
Need a room in Kona? Here's what's available for the mentioned dates on Hotelwatchdog.