Cheap flights from Ontario to Kaua'i from $181
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Kaua'i departing on 12/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from Ontario to Kaua'i
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Kaua'i?
In general, November is the cheapest month to fly from Ontario to Kaua'i. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $401. The month of September is another great option to travel to Kaua'i, with average flight prices from Ontario averaging around $476.
What is the cheapest day to depart on your flight to Kaua'i?
According to our data, Thursday is the cheapest day to fly to Kaua'i from Ontario. The lowest ticket price found for a Thursday departure recently was $298. 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 $610. These prices are subject to change though, so be sure to set up a Price Alert for flights to Kaua'i.
What is the cheapest time of day to depart on your flight to Kaua'i?
The cheapest time of day to fly to Kaua'i is in the afternoon when flights can be purchased for as low as $460. In contrast, the most expensive time of day to depart to Kaua'i is at noon when prices are around $525.
How far in advance should I book a flight to Kaua'i?
You are more likely to see cheaper flights to Kaua'i from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Kaua'i for around $548 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Kaua'i from Ontario for as low as $422 on momondo.
What is the cheapest airline that flies from Ontario to Kaua'i?
Delta, Southwest, and United Airlines are the most popular carriers operating from Ontario to Kaua'i
What airlines fly to Kaua'i?
Hawaiian Airlines, American Airlines and United Airlines are the top three most popular airlines that fly to Kaua'i from Ontario according to our data. Hawaiian Airlines is the first choice among our users, with 36% of people opting to fly with this airline when traveling to Kaua'i. Keep in mind that there are 6 different airlines that fly to Kaua'i on a routine basis, so you have a few additional options to choose from.
Cheap Ontario to Kaua'i flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Ontario to Kaua'i
When did momondo last update prices for flights from Ontario Airport to Kaua'i?
Prices for flights from Ontario Airport to Kaua'i are updated daily.
How many operators does momondo search for flights from Ontario Airport to Kaua'i?
As of June 2025, there are 6 operators available to choose from for flights from Ontario Airport to Kaua'i.
How old do you have to be to fly from Ontario Airport to Kaua'i?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Kaua'i.
What documentation or ID do you need to fly to Kaua'i?
The required travel and health documents for your Kaua'i trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Kaua'i. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Ontario to Kaua'i?
momondo data reveals that the most frequently booked plane model on the route from Ontario to Kaua'i is Airbus A320neo, representing 16.89% of all bookings. The subsequent popular models are Airbus A321neo at 12.01%, Boeing 737 MAX 8 at 8.93%, and Boeing 737-800 Passenger/BBJ2 (winglets) at 8.75%.
Best airlines flying from Ontario to Kaua'i
Compare and see reviews for airlines that fly from Ontario to Kaua'i with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $177 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $236 | Free Cancellation | Rating 8.0 7,963 reviews | |||
| PriceFrom $340 | Free Cancellation | Rating 7.8 2,522 reviews | |||
| PriceFrom $361 | Free Cancellation | Rating 8.0 4,276 reviews | |||
| PriceFrom $363 | Free Cancellation | Rating 7.4 8,838 reviews | |||
| PriceFrom $428 | Free Cancellation | Rating 8.0 10,000 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Ontario to Kaua'i?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ontario to Kaua'i. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Ontario to Kaua'i with flexible booking policies on momondo?
Yes. All flights to Kaua'i from Ontario on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Ontario to Kaua'i?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Kaua'i from Ontario.
I’m not ready to book a flight from Ontario to Kaua'i right now. Can momondo alert me if prices change?
Yes. momondo can track prices for Ontario to Kaua'i flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.