$174 Cheap United flights Honolulu (HNL) to San Diego (SAN)

Scoring cheap one-way United Airlines flights from HNL to SAN from $174 on Expedia couldn’t be easier — just filter by “Price (lowest to highest).” Alternatively, check out our budget-friendly return fares from $330 for your next break.**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.

January is one of the least expensive months to jet away to San Diego with United Airlines. You could also find fantastic deals on one-way and round-trip fares in November.

Look for cheap United Airlines flights from Daniel K. Inouye Intl. Airport (HNL) to San Diego Intl. Airport (SAN) one to three months ahead of your departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. Regardless of fare type and journey, the ideal day to book a domestic flight is generally Sunday and the most expensive day tends to be Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**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.

Enter your dates, hit search and check the “Nonstop” filter on Expedia to browse any direct flights from HNL to SAN with United Airlines or another airline.

To find the earliest departures from HNL to SAN with United Airlines, filter your search by “Early Morning” and “Morning.” Choosing an early flight usually means cancellations are less likely.**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.

Hop on a United Airlines flight from Daniel K. Inouye Intl. Airport (HNL) to San Diego, and you’ll likely land at San Diego Intl. Airport (SAN). This is the airline’s main hub here.

Fly from HNL to SAN with United Airlines and you can look forward to a range of benefits including a rewarding loyalty program. When you book through Expedia as a United Mileage Plus and One Key™ member, you could also earn OneKeyCash™* to use on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Changes are typically free within 24 hours of booking, but your airline may charge a fee after that time. For more details about altering your reservation, head to your “Trips,” select your flight and click on “Manage Booking.” If you want the flexibility to update your itinerary without additional charges, apply the “Changes included” and “No cancel fee” filters when planning your trip.