ONT - KOA

$190 Find Cheap Flights from Ontario to Kailua-Kona - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Kailua-Kona departing on 8/18. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Kailua-Kona

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Kailua-Kona, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Kailua-Kona, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$379
Typical prices: $400-$488
Southwest
Sun 11/8Thu 11/12
ONT - KOA • 1 stop
Cheapest one-way
$190
Typical prices: $255-$256
Multiple Airlines
Tue 8/18
ONT - KOA • 1 stop
Top airlines
Cheapest • from $379 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Ontario and Kailua-Kona. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $453 (round-trip)
Shortest trip • 8h 21m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 27% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Kailua-Kona!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to Kailua-Kona (ONT-KOA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Kailua-Kona that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Kailua-Kona

Sun, Nov 8 - Thu, Nov 12
Southwest Logo
9:00 am - 6:10 pm
ONT
-
KOA
11h 10m
1 stop
Southwest Logo
11:40 am - 10:10 pm
KOA
-
ONT
8h 30m
1 stop
$379Southwest
Sun, Aug 23 - Thu, Aug 27
Southwest Logo
7:15 am - 12:15 pm
ONT
-
KOA
8h 00m
1 stop
Southwest Logo
6:05 am - 8:10 pm
KOA
-
ONT
11h 05m
1 stop
$384Southwest
Wed, Aug 5 - Wed, Aug 12
Alaska Airlines Logo
2:05 pm - 10:10 pm
ONT
-
KOA
11h 05m
1 stop
Alaska Airlines Logo
1:18 pm - 11:14 am
KOA
-
ONT
18h 56m
1 stop
$388Alaska Airlines
Sun, Nov 8 - Thu, Nov 12
Southwest Logo
11:20 am - 9:25 pm
ONT
-
KOA
12h 05m
2 stops
Southwest Logo
11:40 am - 10:10 pm
KOA
-
ONT
8h 30m
1 stop
$389Southwest
Wed, Sep 16 - Wed, Sep 23
Delta Logo
6:20 am - 5:31 pm
ONT
-
KOA
14h 11m
1 stop
Delta Logo
8:50 pm - 12:14 pm
KOA
-
ONT
12h 24m
2 stops
$394Delta
Tue, Sep 8 - Tue, Sep 15
Alaska Airlines Logo
12:12 pm - 7:27 pm
ONT
-
KOA
10h 15m
1 stop
Alaska Airlines Logo
10:25 pm - 11:16 am
KOA
-
ONT
9h 51m
1 stop
$398Alaska Airlines
Sun, Nov 8 - Thu, Nov 12
Southwest Logo
11:20 am - 9:25 pm
ONT
-
KOA
12h 05m
2 stops
Southwest Logo
9:30 pm - 10:40 am
KOA
-
ONT
11h 10m
2 stops
$399Southwest
Sun, Oct 18 - Tue, Oct 20
Multiple Airlines Logo
7:00 am - 11:46 am
ONT
-
KOA
7h 46m
1 stop
Multiple Airlines Logo
9:48 am - 9:22 pm
KOA
-
ONT
8h 34m
1 stop
$402Multiple Airlines
Wed, Oct 28 - Wed, Nov 11
Multiple Airlines Logo
7:00 am - 5:12 pm
ONT
-
KOA
13h 12m
1 stop
Multiple Airlines Logo
6:30 pm - 9:32 pm
KOA
-
ONT
25h 02m
1 stop
$403Multiple Airlines
Wed, Aug 5 - Thu, Aug 6
Alaska Airlines Logo
2:05 pm - 10:10 pm
ONT
-
KOA
11h 05m
1 stop
Alaska Airlines Logo
8:03 am - 11:11 pm
KOA
-
ONT
12h 08m
1 stop
$406Alaska Airlines
Booking Insights

KAYAK's insights & trends for Ontario to Kailua-Kona flights

Get data-powered insights and trends into flights from Ontario to Kailua-Kona to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Ontario to Kailua-Kona?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Ontario to Kailua-Kona departing in November.

What is the cheapest month to fly from Ontario to Kailua-Kona?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Kailua-Kona, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ontario to Kailua-Kona is January, where tickets cost $369 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $692 and $603 respectively.

Good to know

Low seasonFebruary
Cheapest flight$190
Best time to beat the crowds but there is an average 9% increase in price.
Most popular time to fly with an average 17% increase in price.
Flight from Ontario to Kailua-Kona

When to book flights from Ontario to Kailua-Kona

Are your dates flexible? Find out the best times to travel from Ontario to Kailua-Kona based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ontario to Kailua-Kona

  • What is the cheapest flight from Ontario to Kailua-Kona?

    In the last 5 days, the lowest price for a flight from Ontario to Kailua-Kona was $190 for a one-way ticket and $379 for a round-trip.

  • Do I need a passport to fly between Ontario and Kailua-Kona?

    No

  • Which aircraft models fly most regularly from Ontario to Kailua-Kona?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Kailua-Kona?

    Star Alliance, and oneworld are the airline alliances operating flights between Ontario and Kailua-Kona, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Ontario to Kailua-Kona, Southwest or Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from Ontario to Kailua-Kona are Southwest and Alaska Airlines. With an average price for the route of $496 and an overall rating of 7.9, Southwest is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $489 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Ontario to Kailua-Kona?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Kailua-Kona.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Kailua-Kona?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Kailua-Kona from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Kailua-Kona?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Kailua-Kona with an airline and back to Ontario with another airline. Booking your flights between Ontario and KOA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Kailua-Kona?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Kailua-Kona from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Ontario to Kailua-Kona

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Kailua-Kona. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Kailua-Kona? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
Alaska AirlinesOverall score based on 12582 reviews
8.1Boarding
8.5Crew
7.8Comfort
7.0Food
7.0Entertainment
Airline reviews

Boarding was easy and quick. Staff was very friendly. Service of snacks and drinks by staff was outstanding.

10.0 ExcellentAnonymous, Apr 2026
ONT - HNL
Read more Alaska Airlines reviews

Boarding was easy and quick. Staff was very friendly. Service of snacks and drinks by staff was outstanding.

It was fine. It was a 30 minute flight so there was water or fruit juice and no food. Which was totally fine. The check in, gate and flight crew were all excellent.

I didn’t order food so can’t really say how it was. Overall, it was a great experience.

Had to sit and wait to get off the plane for closeto a hour. My son also flying to a different destination that day also had like a 2.5 hr delay

Tickets we booked together in January became two different connecting flights. VERY PISSED a about this and a terrible start to our bucket list vacation

Flight was delayed which led to missed connection, but rebooked on a more direct flight at the last minute and arrived in Juneau on time with all our luggage. Little stressful and our family seating got split, but it all worked out in the end.

they didn't fix a plane and we were delayed travelling an extra 12 hours.

This flight was how a flight should be. The flight from Hawaii to Seattle was terrible

While the flight itself was pleasant, the process of checking in was difficult. The line was long and our connection time was but two hours. When we finally got to the Hawaiian agent and told him that we were traveling on Alaskan Airlines, he told us we would need to go to a different terminal. I told him that another Hawaiian Airlines agent had directed us to him. I’m looking at our tickets, he noticed that the Alaskan Airlines flight was to be managed by a second party. He ended admonish us for not telling us so Rather than considering that we might’ve been right in the first place.

Plane left an hour late due to flight staffing problems. Only a 45 min flight, but it took 3 hours as a result, which left a lot of people disgruntled. No excuses. No recompense.

Flight was delayed, full flight and I had to change gates. Southwest flights are always late later in the day.

The crew was very kind and made going to Hawaii relaxing and fun to look forward to! Thank you Southwest for a pleasant flight!

I liked the crew member who gave flight instructions on "in case of a problem:. The seats are so small that only a young teenager could sit in middle seat.

I recently flew Southwest from San Jose to Honolulu. I was very impressed with the flight crew, especially the flight attendant in charge of the front of the plane. She came through the aisle at least five times for drinks and water, and two times for snacks. I have not seen such service since I flew first class. Also, for the first time, they gave us the correct baggage claim number, and the luggage came out quickly. I can't wait for Southwest to have assigned seating! I absolutely hate the Cattle Call boarding procedure and the mad dash to get seats and overhead bins. However, the boarding was efficient.

Much better than the.last. flight on SW on Thanksgiving day

Unfortunately it was not a good experience. There was a rude stewardess.

Boarding was well explained and smooth. The flight was short, so there was no time for snacks. They did offer water or juice, though.

The flight was very short, 45 mins, therefore no snacks/drinks were provided; there should be a NA option for food and entertainment survey questions. Also, there were no charging ports onboard for cell phones. My experience was overall positive.

I liked receiving attention from aged and well experienced flight attendants. I disliked the non-gluten-free snack but I brought my own so I was OK.

Price was right. Add power to the seats, television, larger plane to accommodate a long flight to improve mental health and overall comfort for a 5 hour flight.

Great staff. Clean plane, but we were delayed for more than an hour due to maintenance issues and had to board another plane.

Seat pitch is horrible especially on the 15 hour flight. Gate crew at SFO was Outstanding. The flight crew was also great.

I’m so sorry, I can’t remember her name, I believe it was Dimpti. She was stellar, also a mature Asian flight attendant, lots of flowers in her hair, just as amazing! But literally the crew was AWESOME . Only downside is there weren’t any charging outlets. Maybe I needed to ask a flight attendant , but it would’ve been nice to have one easily accessible.

Older aircraft, no meal, only food was for purchase. Not impressed United.

Stuck on tarmac for two hours plus a 5.5 hour flight. Rude flight attendant. And no meals, not even for purchase!

I learned that seating towards the end of plane that a line forms for the restroom and people use your chair as a hand railing, bumping your seat consistently. I was seated in the aisle. I think that next time if I am towards the back row I would want to sit in the middle or window seat.

Boarding seemed to be organized bedlam. For what ever reason, preboarding took longer than 20 minutes. Made the plane 20 minutes late taking off. Luckily we arrived on time. Flight crew seemed very friendly. Only slight turbulence.

The personnel were professional and friendly. The Boeing 737 Max 9 is too claustrophobic and was very warm at both airport gates, and still warm in the air.

Left 2 hours later for delayed I had to take care a kid with special need since people don’t want to move to accommodate the rest of the family. . It wasn’t bad but that made me upset that people can be that selfish.

Everything was great, only problem was that flights were delayed

Everything you need to know for your flight from Ontario to Kailua-Kona

Information on your arrival and departure airports