$225 Cheap United flights Boston (BOS) to Kailua-Kona (KOA)

Apply the “Price (lowest to highest)” filter on Expedia to look for cheap United Airlines return flights from $449 from BOS to KOA. Affordable one-way fares from $225 are also available.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

October is one of the least expensive months to fly to Kailua-Kona with United Airlines. You could also find fantastic deals on one-way and return fares in September.

Begin your search one to three months before your departure to get cheaper fares on United Airlines flights from Logan Intl. Airport (BOS) to Kona Intl. Airport (KOA). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to last-minute reservations made 6 to 12 days out. You could also reduce costs by buying your fare on a Sunday, as it’s 6% cheaper on average than a Monday, the most expensive day to book.* Time it well, and you can enjoy significant savings on domestic journeys.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Use the “Nonstop” filter when browsing for direct United Airlines flights from BOS to KOA. It’s also an easy way to compare other airlines servicing the same nonstop journey.

Sort your results by “Early Morning” and “Morning” to browse the earliest departures from BOS to KOA. Heading off early means you’re less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Get on a United Airlines flight from Logan Intl. Airport (BOS) to Kailua-Kona, and you’ll most likely come in to Kona Intl. Airport (KOA). This is the airline’s main hub here.

Offering a rewarding loyalty program, United Airlines is a favorite of many travelers flying from BOS to KOA. Plus, as a United Mileage Plus and One Key™ member booking through Expedia, you can earn OneKeyCash™* on eligible flights on top of your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Changes are often free within 24 hours of making a booking, but your airline may add a charge after that. For more details about modifying your reservation, head to your “Trips,” select your flight and click on “Manage Booking.” If you’d like the flexibility to adjust your plans without additional costs, tick the “No cancel fee” or “Changes included” filter when planning your next adventure.