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Cheap flights from Ontario to Kaua'i from C$ 429

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 25/10. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — LIH
17 Jun — 24 Jun1
1 adult

Cheap flight deals from Ontario to Kaua'i

Keep the following information in mind while searching for Ontario to Kaua'i flight deals. Data was last updated 12 June 2025.

Round-trip from

C$ 438

Popular in

July

Cheapest in

August

Average price

C$ 1,329
United Airlines
  • United Airlines
  • 26/8-9/9
  • 4 total stops
  • 32h 33m total
  • Ontario to Kaua'i
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (C$ 167 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 71 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

Find flight deals from Ontario to Kaua'i

Cheapest flights from Ontario to Kaua'i
Explore the most affordable flight options available from Ontario to Kaua'i. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 June 2025.

Sat 25/109:00 a.m.YYZ - LIH
2 stops16h 55mUnited Airlines
Fri 31/101:15 p.m.LIH - YYZ
2 stops14h 40mUnited Airlines
Deal found 11/6C$ 429
Wed 3/127:05 p.m.YUL - LIH
2 stops22h 45mUnited Airlines
Wed 10/122:15 p.m.LIH - YUL
2 stops15h 42mUnited Airlines
Deal found 10/6C$ 505
Wed 3/125:50 p.m.YUL - LIH
1 stop24h 00mAir Canada
Wed 10/122:15 p.m.LIH - YUL
2 stops21h 43mAir Canada
Deal found 11/6C$ 567
Sat 25/106:35 p.m.YYZ - LIH
1 stop23h 23mAir Canada
Fri 31/101:15 p.m.LIH - YYZ
1 stop20h 11mAir Canada
Deal found 11/6C$ 570
Wed 31/127:55 a.m.YYZ - LIH
2 stops19h 41mWestJet
Sun 18/111:40 p.m.LIH - YYZ
1 stop13h 01mWestJet
Deal found 10/6C$ 696
Sat 11/104:45 p.m.YYZ - LIH
1 stop34h 46mAlaska Airlines
Sun 19/109:00 p.m.LIH - YYZ
2 stops36h 00mAlaska Airlines
Deal found 11/6C$ 912
Sat 6/126:20 p.m.YYZ - LIH
2 stops24h 13mAmerican Airlines
Sat 13/123:03 p.m.LIH - YYZ
2 stops14h 42mAmerican Airlines
Deal found 10/6C$ 920
Tue 29/77:45 p.m.YYZ - LIH
1 stop22h 40mMultiple Airlines
Tue 5/87:55 p.m.LIH - YYZ
2 stops14h 44mMultiple Airlines
Deal found 12/6C$ 941
Wed 31/124:45 p.m.YUL - LIH
2 stops58h 51mWestJet
Sun 18/111:40 p.m.LIH - YUL
2 stops31h 40mWestJet
Deal found 10/6C$ 1,060
Fri 27/66:05 a.m.YOW - LIH
2 stops19h 33mLufthansa
Tue 1/710:15 p.m.LIH - YOW
2 stops17h 20mLufthansa
Deal found 11/6C$ 1,064
Sun 6/73:40 p.m.YUL - LIH
2 stops26h 07mAmerican Airlines
Sun 20/71:17 p.m.LIH - YUL
2 stops20h 07mAmerican Airlines
Deal found 10/6C$ 1,797
Fri 27/64:05 p.m.YOW - LIH
2 stops25h 35mAir Canada
Tue 1/71:13 p.m.LIH - YOW
3 stops17h 57mAir Canada
Deal found 11/6C$ 1,894

Cheapflights Fare Finder

Customize your flight search to find flights from Ontario to Kaua'i 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 629,999 searches. Data last updated 12 June 2025.
Use the filters below to find and compare flights from Ontario to Kaua'i that are best for you.

Fly from

Ontario

Fly to

Kaua'i

Route

Depart

Return

Price

TorontoLihue

YYZ - LIH

YYZLIH

Toronto Pearson Intl

Tue 26/8

7:00 a.m.-3:36 p.m.

2 stops14h 36m

Lihue

Tue 9/9

7:40 p.m.-3:11 p.m.

1 stop13h 31m

C$ 438

MontrealLihue

YUL - LIH

YULLIH

Montreal Pierre Elliott Trudeau Intl

Sun 24/8

6:00 a.m.-7:58 p.m.

2 stops19h 58m

Lihue

Sat 30/8

1:13 p.m.-1:09 p.m.

2 stops17h 56m

C$ 692

TorontoLihue

YYZ - LIH

YYZLIH

Toronto Pearson Intl

Sun 31/8

6:45 p.m.-11:54 a.m.

1 stop23h 09m

Lihue

Thu 11/9

1:13 p.m.-3:20 p.m.

1 stop20h 07m

C$ 874

TorontoLihue

YYZ - LIH

YYZLIH

Toronto Pearson Intl

Tue 29/7

7:45 p.m.-12:25 p.m.

1 stop22h 40m

Lihue

Tue 5/8

7:55 p.m.-4:39 p.m.

2 stops14h 44m

C$ 941

OttawaLihue

YOW - LIH

YOWLIH

Ottawa

Fri 27/6

6:05 a.m.-7:38 p.m.

2 stops19h 33m

Lihue

Tue 1/7

10:15 p.m.-9:35 p.m.

2 stops17h 20m

C$ 1,064

TorontoLihue

YYZ - LIH

YYZLIH

Toronto Pearson Intl

Tue 29/7

4:45 p.m.-9:54 p.m.

1 stop35h 09m

Lihue

Tue 5/8

9:32 p.m.-3:00 p.m.

1 stop11h 28m

C$ 1,147

MontrealLihue

YUL - LIH

YULLIH

Montreal Pierre Elliott Trudeau Intl

Sun 24/8

4:55 p.m.-11:54 a.m.

3 stops24h 59m

Lihue

Sat 30/8

1:13 p.m.-12:34 a.m.

2 stops29h 21m

C$ 1,594

MontrealLihue

YUL - LIH

YULLIH

Montreal Pierre Elliott Trudeau Intl

Sun 6/7

3:40 p.m.-11:47 a.m.

2 stops26h 07m

Lihue

Sun 20/7

1:17 p.m.-3:24 p.m.

2 stops20h 07m

C$ 1,797

OttawaLihue

YOW - LIH

YOWLIH

Ottawa

Fri 27/6

4:05 p.m.-11:40 a.m.

2 stops25h 35m

Lihue

Tue 1/7

1:13 p.m.-1:10 p.m.

3 stops17h 57m

C$ 1,894

TorontoLihue

YYZ - LIH

YYZLIH

Toronto Pearson Intl

Thu 3/7

10:20 p.m.-9:07 a.m.

3 stops40h 47m

C$ 530

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/6

Showing 1-10 of 19 results
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Best time to book a flight from Ontario to Kaua'i

Have a flexible travel schedule? Discover the best time to fly to Kaua'i 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 Kaua'i

What is the cheapest month to book a flight from Region of Ontario to Kaua'i?

Currently, October is the cheapest month in which you can book a flight from Region of Ontario to Kaua'i (average of C$ 423). Flying from Region of Ontario to Kaua'i in June is currently the most expensive (average of C$ 718). 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 ON to FUS?

Find hourly flight availability from Ontario to Kaua'i. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 June 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Region of Ontario to Kaua'i as you normally would.

Rainfall in Kaua'i by month

Plan your trip to Kaua'i by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Kaua'i ranges from 57.0 - 170.0 mm per month. January is typically the wettest month, when rainfall can reach 170.0 mm. June is typically the driest time to visit Kaua'i when rainfall is around 57.0 mm.

Temperature in Kaua'i by month

Plan your trip to Kaua'i by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Kaua'i, 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 25.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.0 C).

Reviews of airlines servicing Kaua'i

Get insights into the airlines that provide service to Kaua'i. 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 Kaua'i. Reviews last updated 12 June 2025.
To help decide which airline to fly from Ontario to Kaua'i, see what other customers have to say about Alaska Airlines, United Airlines and American Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Air Canada
7.1
Good
9,537 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Lufthansa
6.8
Okay
7,139 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Kaua'i. 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 to fly from Region of Ontario to Kaua'i one-way?

    The cheapest airlines for a one-way flight from Region of Ontario to Kaua'i are United Airlines (C$ 556), Alaska Airlines (C$ 695), and Air Canada (C$ 1,533).

  • Can I find deals for flights from Ontario to Kaua'i that include hotel bookings?

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

  • How can I find direct flights from Ontario to Kaua'i?

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

  • Can I find deals for business class flights from Ontario to Kaua'i?

    Yes. Cheapflights offers flight deals from Ontario to Kaua'i 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 Kaua'i?

    Currently, October is the cheapest month in which you can book a flight from Region of Ontario to Kaua'i (average of C$ 423). Flying from Region of Ontario to Kaua'i in June is currently the most expensive (average of C$ 718). 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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Alternative routes for Ontario to Kaua'i

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Ontario to Kaua'i

Discover the top 2 airlines that operate flights from Ontario to Kaua'i. 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 629,999 searches. Data last updated 12 June 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 558AverageC$ 1,013FlexibilityNo cancel feeOn-time60%
Search WestJet flights
United AirlinesCheapestC$ 679AverageC$ 1,042FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

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How does Cheapflights help users find flights from Ontario to Kaua'i?

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Can Cheapflights find flights from Ontario to Kaua'i with no change fees?

Need flexible booking options for your flight to Kaua'i from Ontario? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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Of course! You can now track prices for flights from Ontario to Kaua'i and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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