HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$173+ Cheap flights from Hawaii to Ontario (ONT)

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 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
HNL — ONT
Aug 1 — Aug 81
Sat 8/1
Sat 8/8
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Hawaii to Ontario with Cheapflights

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.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Hawaii to Ontario

Cheapest flights from Hawaii to Ontario
Explore the most affordable flight options available from Hawaii to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2026.

This Southwest deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2711:55 am
HNL
-
ONT
Nonstop5h 15m
Southwest
Mon 8/318:00 am
ONT
-
HNL
Nonstop5h 40m
Southwest
Deal found 6/30$345
This Southwest deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2411:55 am
HNL
-
ONT
Nonstop5h 15m
Southwest
Mon 10/58:00 am
ONT
-
HNL
Nonstop5h 55m
Southwest
Deal found 6/28$351
This Booking.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1912:48 pm
HNL
-
ONT
Nonstop5h 34m
Alaska Airlines
Mon 10/267:00 am
ONT
-
HNL
Nonstop6h 02m
Alaska Airlines
Deal found 7/1$357
This United Airlines deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/277:00 am
HNL
-
ONT
1 stop10h 01m
United Airlines
Mon 8/311:56 pm
ONT
-
HNL
1 stop8h 32m
United Airlines
Deal found 6/30$364
This Booking.com deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/171:33 pm
HNL
-
ONT
Nonstop5h 37m
Multiple Airlines
Mon 9/217:59 pm
ONT
-
HNL
1 stop17h 48m
Multiple Airlines
Deal found 7/2$371
This United Airlines deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/249:40 pm
HNL
-
ONT
2 stops11h 38m
United Airlines
Mon 10/56:00 am
ONT
-
HNL
1 stop8h 45m
United Airlines
Deal found 6/28$376
This Booking.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1512:48 pm
HNL
-
ONT
Nonstop5h 34m
Multiple Airlines
Mon 10/196:56 pm
ONT
-
HNL
1 stop18h 24m
Multiple Airlines
Deal found 6/28$377
This Priceline deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/612:48 pm
HNL
-
ONT
Nonstop5h 34m
Alaska Airlines
Wed 10/72:13 pm
ONT
-
HNL
1 stop12h 41m
Alaska Airlines
Deal found 6/29$380
This Vliegwinkel deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/209:52 pm
OGG
-
ONT
1 stop8h 59m
Alaska Airlines
Wed 8/2610:45 am
ONT
-
OGG
1 stop10h 02m
Alaska Airlines
Deal found 6/29$407
This flugladen.de deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/209:35 pm
LIH
-
ONT
1 stop10h 29m
Alaska Airlines
Wed 8/2612:00 pm
ONT
-
LIH
1 stop10h 23m
Alaska Airlines
Deal found 7/1$418
This Priceline deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/139:40 pm
OGG
-
ONT
1 stop10h 34m
Multiple Airlines
Mon 8/179:11 am
ONT
-
OGG
1 stop10h 53m
Multiple Airlines
Deal found 6/30$424
This Priceline deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/149:19 pm
KOA
-
ONT
1 stop10h 55m
Multiple Airlines
Tue 8/189:11 am
ONT
-
KOA
1 stop11h 08m
Multiple Airlines
Deal found 6/27$424

Find flight deals from Hawaii to Ontario

Keep the following information in mind while searching for Hawaii to Ontario flight deals. Data was last updated July 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$345
(Southwest)

One-way from

$173
(Alaska Airlines)

Popular in

July

Cheapest in

February

Average price

$509

Good one-way deal

$258 or less
Provider with most accurate pricing for Honolulu-Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for Honolulu-Los Angeles flights.
Search Deals
From Hawaii to Ontario
Search Deals
One-way flight from Hawaii to Ontario
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($53 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a one-way flight from Hawaii to Ontario.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Hawaii to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 2, 2026.
Use the filters below to find and compare flights from Hawaii to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

HonoluluOntario

HNL - ONT

HNLONT

Honolulu

Thu 8/27

11:55 am-8:10 pm

Nonstop5h 15m

Ontario

Mon 8/31

8:00 am-10:40 am

Nonstop5h 40m

$345

HonoluluOntario

HNL - ONT

HNLONT

Honolulu

Mon 8/24

10:45 pm-11:16 am

1 stop9h 31m

Ontario

Mon 8/31

11:56 am-7:11 pm

1 stop10h 15m

$411

HonoluluOntario

HNL - ONT

HNLONT

Honolulu

Tue 8/18

6:10 am-8:05 pm

2 stops10h 55m

Ontario

Tue 8/25

1:15 pm-9:10 pm

1 stop10h 55m

$415

KahuluiOntario

OGG - ONT

OGGONT

Kahului

Thu 8/13

9:40 pm-11:14 am

1 stop10h 34m

Ontario

Mon 8/17

9:11 am-5:04 pm

1 stop10h 53m

$424

LihueOntario

LIH - ONT

LIHONT

Lihue

Thu 9/24

11:13 am-10:10 pm

1 stop7h 57m

Ontario

Mon 9/28

12:10 pm-8:14 pm

1 stop11h 04m

$424

KahuluiOntario

OGG - ONT

OGGONT

Kahului

Thu 8/20

9:52 pm-9:51 am

1 stop8h 59m

Ontario

Mon 8/24

3:07 pm-10:14 pm

1 stop10h 07m

$428

KahuluiOntario

OGG - ONT

OGGONT

Kahului

Thu 8/20

8:25 pm-1:25 pm

1 stop14h 00m

Ontario

Tue 8/25

11:10 am-4:10 pm

1 stop8h 00m

$428

KahuluiOntario

OGG - ONT

OGGONT

Kahului

Thu 8/13

8:35 pm-11:25 am

1 stop11h 50m

Ontario

Wed 8/19

11:10 am-4:10 pm

1 stop8h 00m

$428

Kailua-KonaOntario

KOA - ONT

KOAONT

Kona Intl

Wed 8/5

8:03 am-11:11 pm

1 stop12h 08m

Ontario

Tue 8/11

6:02 am-2:35 pm

1 stop11h 33m

$431

LihueOntario

LIH - ONT

LIHONT

Lihue

Thu 8/20

9:35 pm-11:04 am

1 stop10h 29m

Ontario

Wed 8/26

12:00 pm-7:23 pm

1 stop10h 23m

$433

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

Best time to book a flight from Hawaii to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Hawaii 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 Hawaii to Ontario

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

Currently, April is the cheapest month in which you can book a flight from Hawaii to Ontario (average of $178). Flying from Hawaii to Ontario in June is currently the most expensive (average of $473). 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.

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

Find hourly flight availability from Hawaii to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 2, 2026.

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

Weekly flight availability from Hawaii to Ontario

Explore weekly flight availability from Hawaii to Ontario. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 2, 2026.

The most flights from USHI to ONT are scheduled on a Wednesday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).

How much does it cost to fly round-trip from Hawaii to Ontario?

How far ahead should I book a flight from Hawaii to Ontario?

The price you pay for your flight from Hawaii to Ontario may vary depending on when you book. For the best chance of a lower fare, look to book 84 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Related info for your journey

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

  • What airport do you fly into for flights to Ontario from Hawaii?

    If you book a flight to Ontario from Hawaii, you will be flying to Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario.

  • How popular is this Hawaii to Ontario flight route?

    The Hawaii to Ontario flight path was viewed by 7 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Hawaii to Ontario?

    A quick flight from Hawaii to Ontario can take about 5h 15m. Southwest provides one of the quickest options available for as low as $345. The distance from Hawaii to Ontario is about 2598 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    To fly one-way, consider booking your trip with Alaska Airlines, which is currently one of the cheapest options available, starting at $135. Southwest flights start at $151 while deals on United Airlines start at $157 one-way.

  • What are the most popular routes from Hawaii to Ontario?

    When deciding which route to take from Hawaii to Ontario consider Honolulu - Ontario, Kahului - Ontario or Kona Intl - Ontario as they are the most popular.

  • What are the cheapest flights from Hawaii to Ontario?

    The cheapest flight price from Hawaii to Ontario is $208. On average you can expect to pay $282. The most popular route, (Honolulu - Ontario), can usually be booked for $345.

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

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

  • How can I find direct flights from Hawaii to Ontario?

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

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

    Yes. Cheapflights offers flight deals from Hawaii to Ontario 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 Hawaii to Ontario?

    Currently, April is the cheapest month in which you can book a flight from Hawaii to Ontario (average of $178). Flying from Hawaii to Ontario in June is currently the most expensive (average of $473). 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

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

Alternative routes for Hawaii to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Newark to San Francisco flights
John F Kennedy Intl to San Francisco flights
LaGuardia to San Francisco flights
John F Kennedy Intl to Los Angeles flights
Newark to Los Angeles flights
Dallas/Fort Worth to Las Vegas flights
John F Kennedy Intl to Las Vegas flights
Newark to Las Vegas flights
Seattle to Los Angeles flights
Dallas/Fort Worth to Los Angeles flights
Seattle to Las Vegas flights
Los Angeles to Las Vegas flights
Stewart to San Francisco flights
Hobby to Las Vegas flights
San Francisco to Las Vegas flights
O'Hare Intl to Las Vegas flights
Atlanta to Las Vegas flights
LaGuardia to Los Angeles flights
San Francisco to Los Angeles flights
Dulles Intl to Las Vegas flights
O'Hare Intl to Los Angeles flights
Seattle to Ontario flights
George Bush Intcntl to Las Vegas flights
Los Angeles to San Francisco flights
John F Kennedy Intl to Ontario flights
LaGuardia to Las Vegas flights
Seattle to San Francisco flights
Hobby to Los Angeles flights
Dallas/Fort Worth to San Francisco flights
Detroit to Las Vegas flights
Boston to Las Vegas flights
Reagan-National to Los Angeles flights
San Francisco to Ontario flights
Ontario to San Francisco flights
Dulles Intl to Los Angeles flights
Baltimore to Los Angeles flights
Denver to Las Vegas flights
Reagan-National to Las Vegas flights
Baltimore to Las Vegas flights
Seattle to Santa Ana flights
Newark to San Jose flights
Orlando to Las Vegas flights
O'Hare Intl to San Francisco flights
Dallas/Fort Worth to Ontario flights
Atlanta to Los Angeles flights
Santa Ana to San Francisco flights
San Francisco to San Diego flights
Seattle to San Diego flights
Austin to Las Vegas flights
San Jose to Las Vegas flights

Top 4 airlines flying from Hawaii to Ontario

Discover the top 4 airlines that operate flights from Hawaii to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$213Average$590FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$218Average$494FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$295Average$467FlexibilityNo cancel feeOn-time75%
Hawaiian AirlinesCheapest$358Average$472FlexibilityNo cancel feeOn-time85%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.