| Cheap Flights: Austin to Kauai-Lihue, Hawaii $386 r/t [August-December] â Delta / United Due to the covid-19 pandemic, we do not recommend booking travel with departures before August. This fare has departures later in the year. Delta has round-trip flights from Austin (AUS) to Kauai-Lihue, Hawaii (LIH) for $386 with a connection. Flights August to December. Weekends available. Change fees are being waived and carry-on bag is allowed for free. You can avoid paying for seat selection by accepting the randomly assigned seat at the gate. Want a notification sent straight to your phone when any new deals are found? Join our Telegram channel and never miss another deal. Patreon supporters receive a recap of all the airfare deals currently available from Austin and San Antonio everyday. We donât charge a subscription fee. Our deal notifications are available for FREE via Instagram, Facebook, Twitter, Telegram, our Webpage, and our E-mail list. If you are paying someone a subscription fee for this content, you are being ripped off. Read More Cheap Flights: Austin to Kauai-Lihue, Hawaii $386 r/t [August-December] â Delta / United . | 