$261 Cheap United flights St. Louis (STL) to Honolulu (HNL)

Set the “Price (lowest to highest)” filter on Expedia to find cheap United Airlines return flights from $458 from STL to HNL. Affordable one-way options from $261 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.

November is one of the most affordable months to get away to Honolulu with United Airlines. You could also find great prices on return and one-way fares in October.

Search for affordable United Airlines flights from Lambert-St. Louis Intl. Airport (STL) to Daniel K. Inouye Intl. Airport (HNL) one to three months prior to your departure day. 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 class and itinerary, the best 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 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.

Fill in your dates, press search and select the “Nonstop” filter on Expedia to find any direct flights from STL to HNL with United Airlines or another carrier.

To find the earliest departure from STL to HNL with United Airlines, sort your results by “Early Morning” and “Morning.” Booking 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.

Get on a United Airlines flight from Lambert-St. Louis Intl. Airport (STL) to Honolulu, and you’ll likely come in to Daniel K. Inouye Intl. Airport (HNL). This is the airline’s main hub in this city.

Travel from STL to HNL with United Airlines and enjoy a host of benefits including a rewarding loyalty program. When booking through Expedia as a United Mileage Plus and One Key™ member, you can also earn OneKeyCash™* to spend 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 often free within 24 hours of making a booking, but your airline may add a charge after that time. For further information about altering your reservation, head to your “Trips,” select your flight and click on “Manage Booking.” If you want the flexibility to change your itinerary without additional costs, check the “No cancel fee” or “Changes included” filter when planning your next getaway.