Cheap flights from San Diego to Kaua'i from $138

In general, January is the cheapest month to fly from San Diego to Kaua'i. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $297. The month of February is another great option to travel to Kaua'i, with average flight prices from San Diego averaging around $422.

According to our data, Wednesday is the cheapest day to fly to Kaua'i from San Diego. The lowest ticket price found for a Wednesday departure recently was $449. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $594. These prices are subject to change though, so be sure to set up a Price Alert for flights to Kaua'i.

The cheapest time of day to fly to Kaua'i is at noon when flights can be purchased for as low as $476. In contrast, the most expensive time of day to depart to Kaua'i is in the afternoon when prices are around $535.

Fly from San Diego to Lihue for the best San Diego - Kaua'i flight prices

You are more likely to see cheaper flights to Kaua'i from San Diego when booking weeks ahead of your departure date. In general, you can expect to find flights to Kaua'i for around $475 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Kaua'i from San Diego for as low as $423 on momondo.

There are 4 cabin classes available to choose from on San Diego to Kaua'i flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

United Airlines, Delta, and Southwest are the most popular carriers operating from San Diego to Kaua'i

Alaska Airlines, Southwest and Hawaiian Airlines are the top three most popular airlines that fly to Kaua'i from San Diego according to our data. Alaska Airlines is the first choice among our users, with 62% of people opting to fly with this airline when traveling to Kaua'i. Keep in mind that there are 7 different airlines that fly to Kaua'i on a routine basis, so you have a few additional options to choose from.

The number of flights available between San Diego and Kaua'i is 1 per day as of April 2026. The most frequent departure time is 10:00AM, with 100% of daily flights leaving at noon.

As of April 2026, there are 13 flights per week flying from San Diego to Kaua'i. The most common day of the week flights depart is Mon, with 15% of flights taking off on this day.