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Kailua-Kona

$293+ Cheap flights from Ontario to Kailua-Kona (KOA)

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 5/30. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — KOA
Jun 6 — Jun 131
Sat 6/6
Sat 6/13
1 adult, Economy
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Cheap flight deals from Ontario to Kailua-Kona

Cheapest flights from Ontario to Kailua-Kona
Explore the most affordable flight options available from Ontario to Kailua-Kona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 7, 2026.

This Delta deal was found by Cheapflights users on 5/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/297:00 am
YUL
-
KOA
2 stops18h 17m
Delta
Mon 9/78:40 pm
KOA
-
YUL
2 stops21h 16m
Delta
Deal found 5/2$570
This WestJet deal was found by Cheapflights users on 5/5. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/14:15 pm
YUL
-
KOA
1 stop34h 39m
WestJet
Wed 12/910:55 pm
KOA
-
YUL
2 stops44h 38m
WestJet
Deal found 5/5$602
This United Airlines deal was found by Cheapflights users on 5/3. 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.
Sat 9/1210:45 am
YYZ
-
KOA
2 stops14h 50m
United Airlines
Sat 9/1910:50 pm
KOA
-
YYZ
1 stop11h 24m
United Airlines
Deal found 5/3$603
This United Airlines deal was found by Cheapflights users on 5/5. 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.
Wed 10/219:15 am
YUL
-
KOA
2 stops17h 45m
United Airlines
Mon 11/28:30 pm
KOA
-
YUL
2 stops14h 51m
United Airlines
Deal found 5/5$611
This United Airlines deal was found by Cheapflights users on 5/6. 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.
Wed 9/2310:45 am
YYZ
-
KOA
2 stops14h 50m
United Airlines
Tue 10/612:04 pm
KOA
-
YYZ
1 stop12h 56m
United Airlines
Deal found 5/6$624
This United Airlines deal was found by Cheapflights users on 5/6. 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.
Sat 9/59:15 am
YUL
-
KOA
2 stops16h 20m
United Airlines
Mon 9/1410:50 pm
KOA
-
YUL
2 stops14h 55m
United Airlines
Deal found 5/6$625
This United Airlines deal was found by Cheapflights users on 5/5. 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.
Sat 11/75:30 pm
YYZ
-
KOA
2 stops24h 30m
United Airlines
Sat 11/2111:10 pm
KOA
-
YYZ
2 stops15h 24m
United Airlines
Deal found 5/5$652
This oojo deal was found by Cheapflights users on 5/6. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/69:40 am
YYZ
-
KOA
2 stops17h 14m
WestJet
Sun 12/2010:55 pm
KOA
-
YYZ
2 stops19h 48m
WestJet
Deal found 5/6$653
This United Airlines deal was found by Cheapflights users on 5/6. 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.
Sat 9/59:45 am
YUL
-
KOA
2 stops16h 20m
United Airlines
Wed 9/1611:58 am
KOA
-
YUL
1 stop14h 18m
United Airlines
Deal found 5/6$669
This Air Canada deal was found by Cheapflights users on 5/5. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/76:55 pm
YYZ
-
KOA
1 stop23h 05m
Air Canada
Sat 11/212:20 pm
KOA
-
YYZ
1 stop11h 20m
Air Canada
Deal found 5/5$669
This Delta deal was found by Cheapflights users on 5/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/76:00 am
YUL
-
KOA
2 stops18h 39m
Delta
Sat 11/218:55 pm
KOA
-
YUL
2 stops21h 56m
Delta
Deal found 5/4$681
This United Airlines deal was found by Cheapflights users on 5/6. 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.
Wed 9/94:55 pm
YUL
-
KOA
2 stops23h 56m
United Airlines
Tue 9/1511:58 am
KOA
-
YUL
1 stop14h 18m
United Airlines
Deal found 5/6$682

Find flight deals from Ontario to Kailua-Kona

Keep the following information in mind while searching for Ontario to Kailua-Kona flight deals. Data was last updated May 7, 2026.

Round-trip from

$539
(oojo)

One-way from

$293
(United Airlines)

Popular in

August

Cheapest in

January

Average price

$859
From Ontario to Kona Intl
Search Deals
One-way flight from Ontario to Kona Intl
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($78 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 May 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Kailua-Kona 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 May 7, 2026.
Use the filters below to find and compare flights from Ontario to Kailua-Kona that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MontrealKailua-Kona

YUL - KOA

YULKOA

Montreal Pierre Elliott Trudeau Intl

Wed 10/21

9:45 am-9:00 pm

2 stops17h 15m

Kona Intl

Mon 11/2

8:30 pm-4:21 pm

2 stops14h 51m

$611

MontrealKailua-Kona

YUL - KOA

YULKOA

Montreal Pierre Elliott Trudeau Intl

Sat 8/29

6:35 pm-10:49 am

1 stop22h 14m

Kona Intl

Mon 9/7

8:00 pm-5:30 pm

2 stops15h 30m

$705

MontrealKailua-Kona

YUL - KOA

YULKOA

Montreal Pierre Elliott Trudeau Intl

Thu 9/10

8:15 am-7:35 pm

2 stops17h 20m

Kona Intl

Wed 9/16

11:58 am-8:16 am

1 stop14h 18m

$742
Quickest round-trip

TorontoKailua-Kona

YYZ - KOA

YYZKOA

Toronto Pearson Intl

Fri 7/3

1:00 pm-9:45 pm

2 stops14h 45m

Kona Intl

Thu 7/30

12:57 pm-9:54 am

2 stops14h 57m

$749

TorontoKailua-Kona

YYZ - KOA

YYZKOA

Toronto Pearson Intl

Sat 5/30

8:50 am-7:47 pm

2 stops16h 57m

Kona Intl

Sat 6/6

1:52 pm-3:46 pm

2 stops19h 54m

$834

MontrealKailua-Kona

YUL - KOA

YULKOA

Montreal Pierre Elliott Trudeau Intl

Thu 6/25

6:00 am-7:31 pm

2 stops19h 31m

Kona Intl

Sat 7/4

2:30 pm-10:40 am

2 stops14h 10m

$877

TorontoKailua-Kona

YYZ - KOA

YYZKOA

Toronto Pearson Intl

Mon 8/17

6:40 pm-10:49 am

2 stops22h 09m

Kona Intl

Fri 8/28

12:04 pm-11:49 am

2 stops17h 45m

$883

MontrealKailua-Kona

YUL - KOA

YULKOA

Montreal Pierre Elliott Trudeau Intl

Sat 10/3

8:20 am-11:46 am

1 stop33h 26m

Kona Intl

Sat 10/17

12:04 pm-8:16 am

1 stop14h 12m

$893

MontrealKailua-Kona

YUL - KOA

YULKOA

Montreal Pierre Elliott Trudeau Intl

Fri 7/31

6:47 pm-7:17 pm

2 stops30h 30m

Kona Intl

Sun 8/16

9:06 pm-11:59 pm

2 stops20h 53m

$929

MontrealKailua-Kona

YUL - KOA

YULKOA

Montreal Pierre Elliott Trudeau Intl

Fri 6/19

6:10 am-9:45 pm

2 stops21h 35m

Kona Intl

Mon 6/29

11:55 am-8:16 am

1 stop14h 21m

$932

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/3

Showing 1-10 of 39 resultsSorted by cheapest first
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Best time to book a flight from Ontario to Kailua-Kona

Have a flexible travel schedule? Discover the best time to fly to Kailua-Kona 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 Kailua-Kona

How far ahead should I book a flight from Region of Ontario to Kailua-Kona?

The price you pay for your flight from Region of Ontario to Kailua-Kona may vary depending on when you book. For the best chance of a lower fare, look to book 80 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Region of Ontario to Kailua-Kona?

Currently, January is the cheapest month in which you can book a flight from Region of Ontario to Kailua-Kona (average of $199). Flying from Region of Ontario to Kailua-Kona in June is currently the most expensive (average of $378). 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.

How much does it cost to fly round-trip from Region of Ontario to Kailua-Kona?

Related info for your journey

Find useful and relevant information for your journey from Ontario to Kailua-Kona. 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 Kailua-Kona from Ontario?

    Located just 7.7 mi from the city center, Kona Intl (KOA) is the airport most travelers will use when flying to Kailua-Kona from Ontario.

  • How long is the flight from Region of Ontario to Kailua-Kona?

    There are many flights that can get you from Region of Ontario to Kailua-Kona in 17h 15m. Fly via United Airlines or Air Canada to get the fastest option. Region of Ontario and Kailua-Kona are separated by a distance of 4887 mi. This flight may include one or multiple stops.

  • What are the most popular routes from Region of Ontario to Kailua-Kona?

    Most travelers choose Montreal Pierre Elliott Trudeau Intl - Kona Intl, Toronto Pearson Intl - Kona Intl or Ottawa - Kona Intl when deciding on the best route from Region of Ontario to Kailua-Kona.

  • Can I find deals for flights from Ontario to Kailua-Kona that include hotel bookings?

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

  • How can I find direct flights from Ontario to Kailua-Kona?

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

  • Can I find deals for business class flights from Ontario to Kailua-Kona?

    Yes. Cheapflights offers flight deals from Ontario to Kailua-Kona 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 Region of Ontario to Kailua-Kona?

    Currently, January is the cheapest month in which you can book a flight from Region of Ontario to Kailua-Kona (average of $199). Flying from Region of Ontario to Kailua-Kona in June is currently the most expensive (average of $378). 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 Kailua-Kona

Discover the top 2 airlines that operate flights from Ontario to Kailua-Kona. 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 May 7, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$342Average$552FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$354Average$960FlexibilityNo cancel feeOn-time67%

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