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

Alaska Airlines, at $668, was found to be the cheapest airline from Ontario to Hilo.Alternate airlines to your destination round-trip include Southwest and United Airlines.

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

For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $286. Users have also found prices from $294 and $948 on Alaska 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 July. 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 FlightHub the most. FlightHub 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.

$286+ 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”

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Cheap flight deals from Ontario to Hilo

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$668 (Alaska Airlines)
One-way from	$286 (United Airlines)
Popular in	December
Cheapest in	October
Average price	$584

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. 6% potential increase in price ($45 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in March 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 March 26, 2025.

Mon 9/18:35 amONT - ITO

1 stop8h 42mAlaska Airlines

Wed 9/107:49 amITO - ONT

1 stop10h 21mAlaska Airlines

Deal found 3/25

$596

Mon 9/11:42 pmONT - ITO

2 stops28h 36mUnited Airlines

Wed 9/108:39 amITO - ONT

2 stops20h 59mUnited Airlines

Deal found 3/25

$619

Fri 4/189:55 amONT - ITO

2 stops11h 15mSouthwest

Mon 4/216:00 amITO - ONT

2 stops12h 10mSouthwest

Deal found 3/24

$759

Thu 6/59:50 amONT - ITO

1 stop10h 11mHawaiian Airlines

Mon 6/97:31 amITO - ONT

1 stop11h 24mHawaiian Airlines

Deal found 3/25

$882

Mon 3/317:05 amONT - ITO

2 stops13h 55mMultiple Airlines

Wed 4/29:30 amITO - ONT

2 stops10h 25mMultiple Airlines

Deal found 3/25

$1,158

Fri 6/136:23 amONT - ITO

3 stops16h 56mAmerican Airlines

Thu 6/266:45 pmITO - ONT

2 stops14h 15mAmerican Airlines

Deal found 3/25

$1,562

Sun 11/162:00 pmONT - ITO

2 stops30h 18mDelta

Fri 11/216:49 pmITO - ONT

2 stops14h 04mDelta

Deal found 3/25

$2,046

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 March 26, 2025.

Fri 6/139:00 amONT - ITO

1 stop14h 19mAlaska Airlines

Thu 6/262:50 pmITO - ONT

2 stops20h 56mAlaska Airlines

Deal found 3/25

$668

Fri 4/189:55 amONT - ITO

2 stops11h 15mSouthwest

Mon 4/216:00 amITO - ONT

2 stops12h 10mSouthwest

Deal found 3/24

$759

Sat 6/141:36 pmONT - ITO

2 stops31h 40mUnited Airlines

Sun 6/227:49 amITO - ONT

2 stops30h 50mUnited Airlines

Deal found 3/25

$851

Thu 6/59:50 amONT - ITO

1 stop10h 11mHawaiian Airlines

Mon 6/98:40 amITO - ONT

1 stop10h 15mHawaiian Airlines

Deal found 3/25

$882

Mon 3/317:05 amONT - ITO

2 stops13h 55mMultiple Airlines

Wed 4/29:30 amITO - ONT

2 stops10h 25mMultiple Airlines

Deal found 3/25

$1,158

Fri 6/136:23 amONT - ITO

3 stops16h 56mAmerican Airlines

Thu 6/266:45 pmITO - ONT

2 stops14h 15mAmerican Airlines

Deal found 3/25

$1,562

Last-minute flights from Ontario to Hilo
Discover last-minute flight deals from Ontario to Hilo. Data last updated March 26, 2025 and is based on user searches.

Mon 3/317:05 amONT - ITO

2 stops13h 55mMultiple Airlines

Wed 4/29:30 amITO - ONT

2 stops10h 25mMultiple Airlines

Deal found 3/25

$1,158

Sat 4/57:05 amONT - ITO

2 stops26h 55mUnited Airlines

Tue 4/158:25 amITO - ONT

2 stops23h 40mUnited Airlines

Deal found 3/25

$909

Sat 4/59:45 amONT - ITO

1 stop10h 15mHawaiian Airlines

Tue 4/158:40 amITO - ONT

1 stop10h 10mHawaiian Airlines

Deal found 3/25

$968

Sat 4/59:45 amONT - ITO

1 stop10h 15mAlaska Airlines

Sun 4/139:30 amITO - ONT

1 stop9h 20mAlaska Airlines

Deal found 3/25

$1,034

Fri 4/1811:33 amONT - ITO

2 stops25h 22mAlaska Airlines

Mon 4/215:35 pmITO - ONT

1 stop25h 15mAlaska Airlines

Deal found 3/24

$670

Fri 4/189:55 amONT - ITO

2 stops11h 15mSouthwest

Mon 4/216:00 amITO - ONT

2 stops12h 10mSouthwest

Deal found 3/24

$759

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 March 26, 2025.

Tue 4/86:00 amONT - ITO

2 stops15h 00mUnited Airlines

Deal found 3/25

$286

Mon 9/228:35 amONT - ITO

1 stop13h 38mAlaska Airlines

Deal found 3/25

$294

Wed 7/236:15 amONT - ITO

3 stops15h 01mMultiple Airlines

Deal found 3/25

$692

Tue 7/229:00 amONT - ITO

1 stop8h 15mHawaiian Airlines

Deal found 3/24

$948

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

Fri 6/13

9:00 am-8:19 pm

1 stop14h 19m

Hilo Intl

Thu 6/26

2:50 pm-2:46 pm

2 stops20h 56m

$668

OntarioHilo

ONT - ITO

ONTITO

Ontario

Fri 4/18

9:55 am-6:10 pm

2 stops11h 15m

Hilo Intl

Mon 4/21

6:00 am-9:10 pm

2 stops12h 10m

$759

OntarioHilo

ONT - ITO

ONTITO

Ontario

Sat 6/14

1:36 pm-6:16 pm

2 stops31h 40m

Hilo Intl

Sun 6/22

7:49 am-5:39 pm

2 stops30h 50m

$851

OntarioHilo

ONT - ITO

ONTITO

Ontario

Thu 6/5

9:50 am-5:01 pm

1 stop10h 11m

Hilo Intl

Mon 6/9

7:31 am-9:55 pm

1 stop11h 24m

$882

OntarioHilo

ONT - ITO

ONTITO

Ontario

Mon 3/31

7:05 am-6:00 pm

2 stops13h 55m

Hilo Intl

Wed 4/2

9:30 am-10:55 pm

2 stops10h 25m

$1,158

OntarioHilo

ONT - ITO

ONTITO

Ontario

Fri 6/13

6:23 am-8:19 pm

3 stops16h 56m

Hilo Intl

Thu 6/26

6:45 pm-12:00 pm

2 stops14h 15m

$1,562

OntarioHilo

ONT - ITO

ONTITO

Ontario

Tue 4/8

6:00 am-6:00 pm

2 stops15h 00m

$286

OntarioHilo

ONT - ITO

ONTITO

Ontario

Sun 5/4

6:00 am-6:01 pm

2 stops15h 01m

$354

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

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 March.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 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 FlightHub the most. FlightHub 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 $768). 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 Southwest, Alaska Airlines and Hawaiian Airlines. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Southwest

8.1

Very good

4,273 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Alaska Airlines

8.0

Very good

9,789 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Hawaiian Airlines

7.9

Good

2,331 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

United Airlines

7.4

Good

8,608 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

American Airlines

7.2

Good

10,000 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Related info for your journey

What are the cheapest airlines flying from Ontario to Hilo round-trip?
Alaska Airlines, at $668, was found to be the cheapest airline from Ontario to Hilo.Alternate airlines to your destination round-trip include Southwest and United Airlines.
What are the cheapest airlines to fly from Ontario to Hilo one-way?
For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $286. Users have also found prices from $294 and $948 on Alaska 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 $768). 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$575	FlexibilityNo cancel fee	On-time75%

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$286+ 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 4/8. 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

1. Tell us where you want to go

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 March 26, 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 March 26, 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 March.

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 March 26, 2025.

Read through reviews of airlines operating flights from Ontario to Hilo, such as Southwest, Alaska Airlines 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 March 26, 2025.