ONT - ITO

$230 Find Cheap Flights from Ontario to Hilo

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 Hilo departing on 3/17. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Hilo

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Hilo, 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 Hilo, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Ontario to Hilo (ONT-ITO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Hilo 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 Hilo

Tue, Nov 4 - Tue, Nov 18
Alaska Airlines Logo
6:00 am - 10:22 pmONT-ITO
18h 22m2 stops
Alaska Airlines Logo
12:31 pm - 11:05 amITO-ONT
20h 34m2 stops
$377Alaska Airlines
Find Deal
Tue, Nov 4 - Tue, Nov 18
Alaska Airlines Logo
6:00 am - 8:30 pmONT-ITO
16h 30m2 stops
Alaska Airlines Logo
6:00 am - 5:14 pmITO-ONT
9h 14m1 stop
$418Alaska Airlines
Find Deal
Tue, Nov 4 - Tue, Nov 18
Alaska Airlines Logo
9:47 am - 5:20 pmONT-ITO
9h 33m1 stop
Alaska Airlines Logo
6:00 am - 5:14 pmITO-ONT
9h 14m1 stop
$448Alaska Airlines
Find Deal
Sat, Jan 24 - Thu, Jan 29
Alaska Airlines Logo
8:13 am - 4:05 pmONT-ITO
9h 52m1 stop
Alaska Airlines Logo
12:05 pm - 10:28 pmITO-ONT
8h 23m1 stop
$524Alaska Airlines
Find Deal
Thu, Nov 27 - Thu, Dec 4
Alaska Airlines Logo
7:50 am - 2:30 pmONT-ITO
8h 40m1 stop
Alaska Airlines Logo
10:56 am - 8:23 pmITO-ONT
7h 27m1 stop
$539Alaska Airlines
Find Deal
Sat, Nov 1 - Sat, Nov 8
Southwest Logo
9:25 am - 6:10 pmONT-ITO
11h 45m2 stops
Southwest Logo
6:55 pm - 10:20 amITO-ONT
13h 25m2 stops
$604Southwest
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Thu, Dec 25 - Tue, Dec 30
Southwest Logo
10:15 am - 6:10 pmONT-ITO
9h 55m2 stops
Southwest Logo
6:00 am - 9:20 pmITO-ONT
13h 20m2 stops
$1,019Southwest
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Tue, Nov 4 - Tue, Nov 18
Multiple Airlines Logo
9:59 am - 10:22 pmONT-ITO
14h 23m3 stops
Multiple Airlines Logo
6:43 pm - 9:01 amITO-ONT
12h 18m2 stops
$1,097Multiple Airlines
Find Deal
Sat, Nov 1 - Sat, Nov 8
Multiple Airlines Logo
6:15 am - 6:51 pmONT-ITO
15h 36m3 stops
Multiple Airlines Logo
2:59 pm - 9:01 amITO-ONT
16h 02m2 stops
$1,236Multiple Airlines
Find Deal
Tue, Dec 23 - Mon, Jan 5
American Airlines Logo
9:53 am - 9:12 pmONT-ITO
13h 19m2 stops
American Airlines Logo
7:44 pm - 8:57 amITO-ONT
11h 13m2 stops
$1,477American Airlines
Find Deal

Everything you should know

Top airlines
Alaska Airlines
Cheapest • from $377 (round-trip)
Alaska Airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
February
Cheapest • 38% price drop
February
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$377
Overall average: $619
Alaska Airlines
Tue 11/4Tue 11/18
ONT - ITO • 2 stops
Cheapest one-way
$230
Hawaiian Airlines
Tue 3/17
ONT - ITO • 1 stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Hilo!
Booking Insights

KAYAK's insights & trends for Ontario to Hilo flights

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

What is the cheapest month to fly from Ontario to Hilo?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Hilo, 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 Hilo is February, where tickets cost $392 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $868 and $796 respectively.

Good to know

Low seasonOctober
Cheapest flight$230
Best time to beat the crowds but there is an average 11% increase in price.
Most popular time to fly and prices are also 39% lower on average.
Flight from Ontario to Hilo

When to book flights from Ontario to Hilo

Are your dates flexible? Find out the best times to travel from Ontario to Hilo 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 Hilo

  • What is the cheapest flight from Ontario to Hilo?

    In the last 3 days, the lowest price for a flight from Ontario to Hilo was $230 for a one-way ticket and $377 for a round-trip.

  • Do I need a passport to fly between Ontario and Hilo?

    No

  • Which aircraft models fly most regularly from Ontario to Hilo?

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

  • Which airline alliances offer flights from Ontario to Hilo?

    oneworld is the only airline alliance operating flights between Ontario and Hilo.

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

    The two airlines most popular with KAYAK users for flights from Ontario to Hilo are Alaska Airlines and Southwest. With an average price for the route of $658 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Southwest is also a great choice for the route, with an average price of $626 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from Ontario to Hilo?

    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 Hilo.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Hilo 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 Hilo?

    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 Hilo with an airline and back to Ontario with another airline. Booking your flights between Ontario and ITO 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 Hilo?

    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 Hilo 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 airlines flying from Ontario to Hilo

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Hilo. 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 Hilo? 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.
8.0
Alaska AirlinesOverall score based on 11073 reviews
8.5Crew
7.8Comfort
7.0Entertainment
8.1Boarding
7.1Food
Airline reviews

The boarding was confusing because the PA system at PDX was so quiet you couldn’t hear anything being said . The seats were uncomfortable. The food was pretty bad and I normally don’t mind airplane food. The flight attendants were not friendly. I learned upon check in that Hawaiian airlines had reassigned our seats of the second leg of the trip. I had confirmed and paid for special seats but they put me and my companion on standard seats in different rows. Hawaiian also did the same on my return flight after the flight times had changed. I happened to go online to check my reservation and saw the flight had changed. I gad received no notice. I saw that my confirmed seats that I had paid extra were gone. After much back and forth with the airlines they refused to correct their error. I showed them confirmation documents of my seat reservation and receipt of payment but they refused to correct the seat change or reimburse me. I had to pay $200 again to reserve the original seats. Shameful and manipulative. They basically held me hostage. If I wanted to be in that flight I had to pay up.

2.0 MediocreAnonymous, Oct 2025PDX - HNL
Read more Alaska Airlines reviews

The boarding was confusing because the PA system at PDX was so quiet you couldn’t hear anything being said . The seats were uncomfortable. The food was pretty bad and I normally don’t mind airplane food. The flight attendants were not friendly. I learned upon check in that Hawaiian airlines had reassigned our seats of the second leg of the trip. I had confirmed and paid for special seats but they put me and my companion on standard seats in different rows. Hawaiian also did the same on my return flight after the flight times had changed. I happened to go online to check my reservation and saw the flight had changed. I gad received no notice. I saw that my confirmed seats that I had paid extra were gone. After much back and forth with the airlines they refused to correct their error. I showed them confirmation documents of my seat reservation and receipt of payment but they refused to correct the seat change or reimburse me. I had to pay $200 again to reserve the original seats. Shameful and manipulative. They basically held me hostage. If I wanted to be in that flight I had to pay up.

I liked that internet connection while in flight was available.👍

My experience from Lihue Airport was the “Flight Experience from Hell!” First, I was pulled aside by the Lihue TSA and searched thoroughly! Not once, but twice I was molested by 5 different TSA agents using some sort of smear cloth testing to see if I had been exposed to something dangerous! I can’t tell you what because they never gave me an explanation by the end of a near delaying incident of boarding my plane. More importantly, I was generously provided an airport wheel chair and personal porter because of my health condition. TSA even took your wheelchair apart! What’s up with that? I’m near 75, caucasian, never been arrested for anything, don’t do drugs or alcohol, and patiently and politely abided to their instructions for a full damn 20 minutes! Awful and humiliating experience especially when two different agents literally groped my testicles and crack of my butt! Then they lost the cap to my inhaler. When I got to my destination, a whole bottle of prescribed pills were emptied because of them not tightening the cap back on! Total BS and unprofessional by the lot of them! The short flight to my connecting flight to the mainland on Maui fortunately was uneventful. However the Hawaiian aircraft to San Jose was one of the worst flights I’ve ever experienced without crashing. I believe it was a 330 Neo. May I ask, why did you put three more rows of seats in the damn plane since I last flew on a Hawaiian aircraft? I had absolutely NO legroom compared to the last time I flew with you. And I’ve done a few Hawaii/mainland trips, even a RT to New Zealand before. Then, the icing on the cake was a couple with a one year old baby that literally cried and screamed for all but 15 minutes of the 5 hour flight to San Jose! Further, I couldn’t move my seat back even a millimeter because a car seat was placed from their window seat to the back of my seat! My Hawaiian flight was a freaking nightmare and fortunately will be flying back to Lihue direct with Alaska!

The pilot performed the smoothest landing I’ve ever experienced. What a light touch. And I’m an avid traveler!

The first leg of the trip was excellent. Lovely flight attendants and comfortable plane. The second leg left a lot to be desired. The flight attendant was rude when I asked for a Diet Coke, the boarding required quite a long walk and the plane was crammed and uncomfortable.

You no longer give receipts for baggage at the counter. And it is next to impossible to get it on your webpage. Spent 20 min trying and gave up... I need receipt to submit for reimbursement and don't have time to waste on your poor webpage Disappointing .....

Overall it was good. There was a delay in departure, which is why I did not rate it as excellent.

Terrible. Would never fly again. Took them several hours to prepare the plane and and reached my destination 4 hours late.

Our boarding was delayed due to two flat tires, but I appreciate the focus on safety. I also appreciated the additional offerings for drinks which never happened before except on Hawaiian Airlines. The hospitality is fantastic! Glad I upgraded to premium seats for the extra leg room as I was getting frustrated when the person in front of me was very restless and kept shifting. Otherwise, it was a fantastic 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

comfortable but the food is horrible. I have flown Hawaiian several times now and no matter what they say the food is its the same squashed bread with melted goop inside. Tastes fake and isnt what they represent, its quite nasty. What happend to real food? And there is NO entertainment!! so not sure why they are asking for a review on that.

I was very, very cold and a stranger loaned me her sweater next to me. I didn’t wanna buy a blanket just for a four hour trip when I did not need the pillow or the earphones. I don’t mind purchasing a blanket, but I only needed that not all of it accessories. Cold air pretty much blew the entire trip. Two people in front of me both bought the blanket packages. Maybe that’s the idea. The crew was exceptionally nice and passed through multiple times.. the restrooms were very clean and usually accessible.

3 hour wait on customer service after flight was cancelled. Was bumped to a flight where I wouldnt have gotten to my destination for another 2 days. Had to fully refund flight and book a new one the following morning. Paid twice the amount for the flight than I had originally booked. Very disappointed I was not offered any sort of discount or points for all of the frustration, in fact the airline profited twice as much off of me by cancelling my flight and and changing my entire trip.

What an amazing flight. I haven’t experienced this level of service in a flight in years. This will be the only way to fly to Hawaii for me in the future.

I could not believe that on a 5 hour plus flight we were not given a complimentary meal . That should be illegal. Or it would be nice to be informed beforehand that a complimentary meal would not be provided. The wording in the email I got about pre ordering food was phrased in a way that made the food seem like it would be free. Very misleading! Also during boarding we were informed there would be empty seats we could move to if we wanted, all we had to do was wait for an announcement, however an announcement was never made. Then when we tried to change seats ourselves we were singled out over the loud speaker and told we could not move without asking. Then the flight was about to take off , so we didn’t have time to ask . Then we were told we could not move to the exit row because you had to pay for those seats, but we were not told where we could move. Also no one was in the exit rows so , if something happened no one would be there to assist the passengers. Also people should be allowed to move there if the airline wasn’t able to sell them. One passenger asked if he could pay for the upgrade and the flight attendant said she did not have the capability to charge for the seat on her mobile device, so the airline ended up losing possible income anyways . So why not let people move there during flight if you have no way to charge them? Then the landing was bumpy and awful and many passengers complained out loud when we landed .

The flight was great! The flight attendants were friendly and attentive. I would definitely fly Hawaiian Aurlines again!

You have to buy the ear buds and they only offers little cup of water twice.

The worst flight experience I've ever had. Our flight was delayed 14 whole hours because the flight crew never showed up. We had to wait in a two hour line to get our new boarding passes, we were told we had no other option but to fly at 10pm (we didn't depart until 11:45pm). Everyone had to contact their hotels and car rental places, workplaces, etc. since we lost an entire day's worth of travel. The crew showed up at 10:15, which was past the time we were supposed to board. They were laughing and being completely smug when they boarded, and they took another hour to board us onto our flight. The flight crew never came to check in on us, we were quickly given one drink and sandwich and they turned off the lights and were negligent the rest of the trip. My mom asked three attendants for a seat belt extender, they never brought one. I was dehydrated and never received another drink. They were very rude and unfriendly, we had been up since 4am the morning of our flight and didn't land in our destination until 2am the next day (5am local time). This was unacceptable service and treatment, these flights are not cheap and we were inconvenienced out of an entire day of travel. This was 100% avoidable and was the fault of Hawaiian Airlines, and their crews inability to show up to work on time.

Loved the leg room, usb charging, outlet, food, staff. The seats were very uncomfortable for some reason and made my buttocks ache and would have liked to be seated together from the time of purchasing tickets without having to pay extra.

Usually we have a pleasant trip on HA. Not this time! All stewards were unpleasant, rude, rushed, condescending. First step onto the plane, WE greeted the crew with an “Hello!”. They greeted us with a terse smile then ignored us. Not a good start. Even over the PA announcements, they were rushed and unpleasant. One Stewart even berated a passenger in front of us when all they asked is if the purchase cart had vodka to purchase. The steward said “LIKE WE SAID OVER THE PA, THIS ONLY HAS FOOD OR BEVERAGE!” Vodka is a beverage! It was a legitimate question. Not sure why she treated the passenger this way. Taking trash was even unpleasant, No “Thank you” or at least a smile. I work in CS. I know good CS can make or break your trip. There was absolutely no “aloha” on this trip. All clearly did not want to be on this plane and felt strongly that they did not want to provide a premium service to their clients. This might be our last HA and cancellation of my HA-MC if we are treated the same way going home. We are typically treated with kindness and warmth in the past with HA. This trip was unacceptable.

Everything you need to know for your flight from Ontario to Hilo

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