What are the cheapest airlines flying from Ontario to Hilo round-trip?

Southwest, at $544, was found to be the cheapest airline from Ontario to Hilo.Alternate airlines to your destination round-trip include Alaska Airlines and Hawaiian Airlines. Southwest is priced at 13% lower than the current average price of a flight leaving 3 months from now.

What are the cheapest airlines to fly from Ontario to Hilo one-way?

For one-way options, check prices for Alaska Airlines. According to our data, you can fly for as low as $304. Users have also found prices from $366 and $657 on United Airlines and Hawaiian Airlines, respectively.

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

Travelers seeking maximum savings on their Ontario to Hilo flight should consider departing on Tuesday mornings when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What is the cheapest day to fly round-trip from Ontario to Hilo?

Leaving on a Monday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 25% on the overall cost on flights from Ontario to Hilo.

How far in advance should I book a flight from Ontario to Hilo?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 57 days in advance, which can save you up to 44% on flights from Ontario to Hilo compared to booking the week you need them. Waiting 57 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $483. For sooner than that we have options available in the next 3 days from $543.

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

Flights from Ontario to Hilo lean towards being more expensive in June. Prices are generally better when you fly from Ontario to Hilo in September, with the cheapest ticket starting at $313.

What is the cheapest time of day to fly from ONT to ITO?

When flying from Ontario to Hilo, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Most accurate provider : When it comes to deals on Ontario-Hilo flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Hilo flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Hilo flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Ontario-Hilo flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Hilo flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Can I find deals for flights from Ontario to Hilo that include hotel bookings?

Yes. In addition to deals on Ontario to Hilo flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Ontario to Hilo?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Hilo.

Can I find deals for business class flights from Ontario to Hilo?

Yes. Cheapflights offers flight deals from Ontario to Hilo by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$267+ Flights from Ontario to Hilo

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

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Cheap flight deals from Ontario to Hilo

Most accurate provider	FlightHub 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$544 (Southwest)
One-way from	$304 (Alaska Airlines)
Popular in	June
Cheapest in	October
Average price	$683

Provider with most accurate pricing for Ontario-Hilo Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Ontario-Hilo Intl flights.

Search Deals

From Ontario to Hilo Intl

Search Deals

One-way flight from Ontario to Hilo Intl

Search Deals

Highest demand for flights based on searches. 11% potential increase in price ($77 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Find flight deals from Ontario to Hilo

Cheapest flights from Ontario to Hilo
Explore the most affordable flight options available from Ontario to Hilo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on avril 17, 2025.

lun. 9/11:42 pmONT - ITO

2 stops28h 36mUnited Airlines

mar. 9/168:39 amITO - ONT

2 stops20h 59mUnited Airlines

Deal found 4/16

$591

lun. 9/18:35 amONT - ITO

1 stop8h 42mHawaiian Airlines

mar. 9/169:34 amITO - ONT

1 stop8h 36mHawaiian Airlines

Deal found 4/16

$592

sam. 5/1710:55 amONT - ITO

2 stops13h 45mSouthwest

sam. 5/246:00 amITO - ONT

2 stops11h 20mSouthwest

Deal found 4/17

$634

ven. 8/296:00 amONT - ITO

2 stops12h 18mAlaska Airlines

lun. 9/87:49 amITO - ONT

1 stop10h 21mAlaska Airlines

Deal found 4/17

$688

jeu. 6/126:00 amONT - ITO

2 stops14h 38mMultiple Airlines

lun. 6/169:34 amITO - ONT

1 stop8h 53mMultiple Airlines

Deal found 4/16

$1,020

Best flights from Ontario to Hilo
Discover carefully curated flight deals from Ontario to Hilo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated avril 17, 2025.

mer. 5/1411:00 amONT - ITO

2 stops10h 10mSouthwest

jeu. 5/158:05 amITO - ONT

2 stops10h 55mSouthwest

Deal found 4/16

$544

mer. 8/208:35 amONT - ITO

1 stop13h 38mAlaska Airlines

lun. 8/257:45 pmITO - ONT

1 stop22h 25mAlaska Airlines

Deal found 4/16

$556

jeu. 8/149:00 amONT - ITO

1 stop9h 55mHawaiian Airlines

jeu. 8/217:49 amITO - ONT

1 stop10h 21mHawaiian Airlines

Deal found 4/16

$589

lun. 9/11:42 pmONT - ITO

2 stops28h 36mUnited Airlines

mar. 9/168:39 amITO - ONT

2 stops20h 59mUnited Airlines

Deal found 4/16

$591

jeu. 8/146:50 amONT - ITO

2 stops12h 05mAmerican Airlines

jeu. 8/217:45 pmITO - ONT

2 stops12h 42mAmerican Airlines

Deal found 4/16

$1,018

jeu. 6/126:00 amONT - ITO

2 stops14h 38mMultiple Airlines

lun. 6/169:34 amITO - ONT

1 stop8h 53mMultiple Airlines

Deal found 4/16

$1,020

Last-minute flights from Ontario to Hilo
Discover last-minute flight deals from Ontario to Hilo. Data last updated avril 17, 2025 and is based on user searches.

sam. 4/265:30 amONT - ITO

2 stops12h 10mSouthwest

sam. 5/36:00 amITO - ONT

2 stops11h 20mSouthwest

Deal found 4/16

$574

sam. 4/269:45 amONT - ITO

1 stop26h 15mAlaska Airlines

sam. 5/38:40 amITO - ONT

2 stops23h 11mAlaska Airlines

Deal found 4/16

$715

sam. 4/269:45 amONT - ITO

1 stop10h 15mHawaiian Airlines

sam. 5/38:40 amITO - ONT

1 stop10h 10mHawaiian Airlines

Deal found 4/16

$718

mar. 4/299:45 amONT - ITO

1 stop13h 25mAlaska Airlines

mar. 5/610:25 amITO - ONT

1 stop8h 25mAlaska Airlines

Deal found 4/15

$700

mer. 4/307:05 amONT - ITO

2 stops13h 55mUnited Airlines

sam. 5/36:00 amITO - ONT

2 stops11h 34mUnited Airlines

Deal found 4/16

$748

mer. 5/1411:00 amONT - ITO

2 stops10h 10mSouthwest

jeu. 5/158:05 amITO - ONT

2 stops10h 55mSouthwest

Deal found 4/16

$544

mer. 5/146:00 amONT - ITO

2 stops11h 36mMultiple Airlines

jeu. 5/155:35 pmITO - ONT

3 stops15h 49mMultiple Airlines

Deal found 4/16

$1,242

One-way flights from Ontario to Hilo
Search for one-way flight options from Ontario to Hilo. Find affordable one-way fares based on user searches. Data last updated avril 17, 2025.

mer. 5/144:29 pmONT - ITO

2 stops30h 39mAlaska Airlines

Deal found 4/17

$304

dim. 5/46:00 amONT - ITO

2 stops15h 00mUnited Airlines

Deal found 4/17

$366

jeu. 4/249:45 amONT - ITO

1 stop13h 25mHawaiian Airlines

Deal found 4/17

$657

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to Hilo that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioHilo

ONT - ITO

ONTITO

Ontario

mer. 5/14

11:00 am-6:10 pm

2 stops10h 10m

Hilo Intl

jeu. 5/15

8:05 am-10:00 pm

2 stops10h 55m

$544

OntarioHilo

ONT - ITO

ONTITO

Ontario

mer. 8/20

8:35 am-7:13 pm

1 stop13h 38m

Hilo Intl

lun. 8/25

7:45 pm-9:10 pm

1 stop22h 25m

$556

OntarioHilo

ONT - ITO

ONTITO

Ontario

jeu. 8/14

9:00 am-3:55 pm

1 stop9h 55m

Hilo Intl

jeu. 8/21

7:49 am-9:10 pm

1 stop10h 21m

$589

OntarioHilo

ONT - ITO

ONTITO

Ontario

lun. 9/1

1:42 pm-3:18 pm

2 stops28h 36m

Hilo Intl

mar. 9/16

8:39 am-8:38 am

2 stops20h 59m

$591

OntarioHilo

ONT - ITO

ONTITO

Ontario

jeu. 8/14

6:50 am-3:55 pm

2 stops12h 05m

Hilo Intl

jeu. 8/21

7:45 pm-11:27 am

2 stops12h 42m

$1,018

OntarioHilo

ONT - ITO

ONTITO

Ontario

jeu. 6/12

6:00 am-5:38 pm

2 stops14h 38m

Hilo Intl

lun. 6/16

9:34 am-9:27 pm

1 stop8h 53m

$1,020

OntarioHilo

ONT - ITO

ONTITO

Ontario

mer. 5/14

11:00 am-9:40 pm

2 stops13h 40m

$267

OntarioHilo

ONT - ITO

ONTITO

Ontario

ven. 4/25

9:45 am-11:56 am

1 stop29h 11m

$294

OntarioHilo

ONT - ITO

ONTITO

Ontario

sam. 9/13

1:42 pm-4:57 pm

2 stops30h 15m

$313

OntarioHilo

ONT - ITO

ONTITO

Ontario

ven. 10/10

9:50 am-3:25 pm

1 stop8h 35m

$331

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 12 results

Compare providers for flights from Ontario to Hilo

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Hilo in April.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Ontario-Hilo flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Hilo flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Hilo flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Ontario-Hilo flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Hilo flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ontario to Hilo

Have a flexible travel schedule? Discover the best time to fly to Hilo from Ontario with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Ontario to Hilo?

Currently, March is the cheapest month in which you can book a flight from Ontario to Hilo (average of $330). Flying from Ontario to Hilo in July is currently the most expensive (average of $766). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Rainfall in Hilo by month

In terms of precipitation, rainfall in Hilo ranges from 7.4 - 15.5 inches per month. November is typically the wettest month, when rainfall can reach 15.5 in. June is typically the driest time to visit Hilo when rainfall is around 7.4 in.

Temperature in Hilo by month

If weather is an important factor for your trip to Hilo, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 71.6 F).

Reviews of airlines servicing Hilo

Read through reviews of airlines operating flights from Ontario to Hilo, such as Alaska Airlines, Southwest and Hawaiian Airlines. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

9,887 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines

8.0

Very good

9,887 reviews

Alaska Airlines

8.0

Very good

9,887 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Southwest

8.0

Very good

4,280 reviews

Alaska Airlines

8.0

Very good

9,887 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Hawaiian Airlines

7.9

Good

2,385 reviews

Alaska Airlines

8.0

Very good

9,887 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines

7.4

Good

8,667 reviews

Alaska Airlines

8.0

Very good

9,887 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

9,887 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

What are the cheapest airlines flying from Ontario to Hilo round-trip?
Southwest, at $544, was found to be the cheapest airline from Ontario to Hilo.Alternate airlines to your destination round-trip include Alaska Airlines and Hawaiian Airlines. Southwest is priced at 13% lower than the current average price of a flight leaving 3 months from now.
What are the cheapest airlines to fly from Ontario to Hilo one-way?
For one-way options, check prices for Alaska Airlines. According to our data, you can fly for as low as $304. Users have also found prices from $366 and $657 on United Airlines and Hawaiian Airlines, respectively.
Can I find deals for flights from Ontario to Hilo that include hotel bookings?
Yes. In addition to deals on Ontario to Hilo flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ontario to Hilo?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Hilo.
Can I find deals for business class flights from Ontario to Hilo?
Yes. Cheapflights offers flight deals from Ontario to Hilo by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Ontario to Hilo?
Currently, March is the cheapest month in which you can book a flight from Ontario to Hilo (average of $330). Flying from Ontario to Hilo in July is currently the most expensive (average of $766). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Ontario to Hilo

Airline	Cheapest	Average	Flexibility	On-time
Hawaiian Airlines	Cheapest$446	Average$565	FlexibilityNo cancel fee	On-time85%
Alaska Airlines	Cheapest$494	Average$620	FlexibilityNo cancel fee	On-time75%

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$267+ Cheap flights from Ontario to Hilo (ONT - ITO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/14. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Hilo with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Ontario to Hilo

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Ontario to Hilo

Cheapest flights from Ontario to HiloExplore the most affordable flight options available from Ontario to Hilo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on avril 17, 2025.

Explore the most affordable flight options available from Ontario to Hilo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on avril 17, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to Hilo that are best for you.

Compare providers for flights from Ontario to Hilo

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Hilo in April.

Best time to book a flight from Ontario to Hilo

Have a flexible travel schedule? Discover the best time to fly to Hilo from Ontario with our price prediction graph.

Cheapflights Insights

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

What is the cheapest month to book a flight from Ontario to Hilo?

Rainfall in Hilo by month

Plan your trip to Hilo by taking into account the average rainfall totals by month.

Temperature in Hilo by month

Plan your trip to Hilo by taking into account the average temperature totals by month.

Reviews of airlines servicing Hilo

Get insights into the airlines that provide service to Hilo. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Hilo. Reviews last updated avril 17, 2025.

Read through reviews of airlines operating flights from Ontario to Hilo, such as Alaska Airlines, Southwest and Hawaiian Airlines. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Hilo. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines flying from Ontario to Hilo round-trip?

What are the cheapest airlines to fly from Ontario to Hilo one-way?

Can I find deals for flights from Ontario to Hilo that include hotel bookings?

How can I find direct flights from Ontario to Hilo?

Can I find deals for business class flights from Ontario to Hilo?

What is the cheapest month to book a flight from Ontario to Hilo?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Hilo

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from Ontario to Hilo

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Cheapest flights from Ontario to Hilo
Explore the most affordable flight options available from Ontario to Hilo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on avril 17, 2025.