$168+ Cheap flights from Ontario (ONT) to Kaua'i
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 12/13. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LIH
Sep 12 — Sep 191
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Ontario to Kaua'i 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 Ontario to Kaua'i
Cheapest
Best
Last-minute
One-way
Cheapest flights from Ontario to Kaua'iExplore 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 August 13, 2026.
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 August 13, 2026.
This Delta deal was found by Cheapflights users on 8/12. 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.
Tue 9/2211:54 am -
1 stop10h 16m
Wed 9/309:54 pm -
1 stop10h 20m
Deal found 8/12![Delta logo]()
$324
This Southwest deal was found by Cheapflights users on 8/11. 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.
Sun 9/136:00 am -
1 stop13h 15m
Thu 9/178:20 am -
1 stop8h 55m
Deal found 8/11![Southwest logo]()
$340
This Delta deal was found by Cheapflights users on 8/11. 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.
Mon 9/2811:54 am -
1 stop10h 16m
Wed 9/309:54 pm -
1 stop10h 20m
Deal found 8/11![Delta logo]()
$344
This Delta deal was found by Cheapflights users on 8/12. 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.
Tue 9/111:56 am -
1 stop10h 20m
Wed 9/99:54 pm -
1 stop10h 20m
Deal found 8/12![Delta logo]()
$348
This Delta deal was found by Cheapflights users on 8/11. 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.
Tue 9/111:56 am -
1 stop10h 20m
Thu 9/109:54 pm -
1 stop10h 20m
Deal found 8/11![Delta logo]()
$350
This Delta deal was found by Cheapflights users on 8/10. 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.
Wed 9/26:00 am -
2 stops16h 16m
Thu 9/109:54 pm -
1 stop10h 20m
Deal found 8/10![Delta logo]()
$356
This Delta deal was found by Cheapflights users on 8/10. 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.
Wed 9/26:00 am -
2 stops16h 16m
Wed 9/99:54 pm -
2 stops11h 20m
Deal found 8/10![Delta logo]()
$361
This Southwest deal was found by Cheapflights users on 8/11. 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 10/298:00 am -
1 stop9h 20m
Tue 11/311:50 am -
1 stop8h 20m
Deal found 8/11![Southwest logo]()
$380
Best flights from Ontario to Kaua'iDiscover carefully curated flight deals from Ontario to Kaua'i that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 13, 2026.
Discover carefully curated flight deals from Ontario to Kaua'i that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 13, 2026.
This Southwest deal was found by Cheapflights users on 8/10. 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.
Tue 9/155:45 am -
2 stops13h 25m
Tue 9/229:25 pm -
1 stop13h 10m
Deal found 8/10![Southwest logo]()
$412
This Alaska Airlines deal was found by Cheapflights users on 8/12. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/117:30 am -
1 stop9h 44m
Wed 11/1811:29 pm -
1 stop9h 49m
Deal found 8/12![Multiple Airlines logo]()
$453
This Delta deal was found by Cheapflights users on 8/10. 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.
Wed 10/711:56 am -
1 stop10h 18m
Mon 10/129:51 pm -
1 stop10h 25m
Deal found 8/10![Delta logo]()
$494
This United Airlines deal was found by Cheapflights users on 8/12. 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.
Tue 10/276:00 am -
1 stop8h 31m
Sat 10/3111:59 pm -
1 stop10h 30m
Deal found 8/12![United Airlines logo]()
$534
This Southwest deal was found by Cheapflights users on 8/10. 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.
Mon 8/318:00 am -
1 stop9h 15m
Fri 9/47:10 pm -
2 stops9h 55m
Deal found 8/10![Southwest logo]()
$436
This Alaska Airlines deal was found by Cheapflights users on 8/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/26:02 am -
1 stop11h 37m
Fri 9/118:12 am -
1 stop10h 58m
Deal found 8/10![Multiple Airlines logo]()
$484
This Delta deal was found by Cheapflights users on 8/8. 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.
Tue 9/111:56 am -
1 stop10h 20m
Mon 9/149:54 pm -
2 stops11h 20m
Deal found 8/8![Delta logo]()
$502
This Southwest deal was found by Cheapflights users on 8/9. 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 11/265:50 am -
1 stop9h 25m
Tue 12/18:25 am -
1 stop11h 45m
Deal found 8/9![Southwest logo]()
$470
This Southwest deal was found by Cheapflights users on 8/9. 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.
Tue 11/179:00 am -
1 stop11h 05m
Tue 11/248:25 am -
1 stop12h 20m
Deal found 8/9![Southwest logo]()
$482
This Southwest deal was found by Cheapflights users on 8/8. 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.
Sun 9/276:00 am -
1 stop13h 15m
Sun 9/279:25 pm -
1 stop11h 25m
Deal found 8/8![Southwest logo]()
$496
Last-minute flights from Ontario to Kaua'iDiscover last-minute flight deals from Ontario to Kaua'i. Data last updated August 13, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Kaua'i. Data last updated August 13, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 8/12. 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.
Tue 9/111:56 am -
1 stop10h 20m
Thu 9/109:54 pm -
1 stop10h 20m
Deal found 8/12![Delta logo]()
$348
This Delta deal was found by Cheapflights users on 8/12. 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.
Tue 9/111:56 am -
1 stop10h 20m
Wed 9/99:54 pm -
2 stops11h 20m
Deal found 8/12![Delta logo]()
$354
This Delta deal was found by Cheapflights users on 8/12. 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.
Tue 9/111:56 am -
1 stop10h 20m
Sat 9/129:54 pm -
1 stop10h 20m
Deal found 8/12![Delta logo]()
$401
This Delta deal was found by Cheapflights users on 8/10. 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.
Wed 9/26:00 am -
2 stops16h 16m
Wed 9/99:54 pm -
1 stop10h 20m
Deal found 8/10![Delta logo]()
$356
This Southwest deal was found by Cheapflights users on 8/11. 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.
Sun 9/136:00 am -
1 stop13h 15m
Thu 9/178:20 am -
1 stop8h 55m
Deal found 8/11![Southwest logo]()
$340
This Delta deal was found by Cheapflights users on 8/12. 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.
Tue 9/2211:54 am -
1 stop10h 16m
Wed 9/309:54 pm -
1 stop10h 20m
Deal found 8/12![Delta logo]()
$324
This Delta deal was found by Cheapflights users on 8/11. 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.
Mon 9/2811:54 am -
1 stop10h 16m
Wed 9/309:54 pm -
1 stop10h 20m
Deal found 8/11![Delta logo]()
$344
One-way flights from Ontario to Kaua'iSearch for one-way flight options from Ontario to Kaua'i. Find affordable one-way fares based on user searches. Data last updated August 13, 2026.
Search for one-way flight options from Ontario to Kaua'i. Find affordable one-way fares based on user searches. Data last updated August 13, 2026.
This Southwest deal was found by Cheapflights users on 8/10. 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.
Sun 12/139:00 am -
1 stop7h 25m
Deal found 8/10![Southwest logo]()
$168
This Delta deal was found by Cheapflights users on 8/12. 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.
Tue 9/111:56 am -
1 stop10h 20m
Deal found 8/12![Delta logo]()
$180
This Priceline deal was found by Cheapflights users on 8/13. 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 10/67:00 am -
1 stop11h 59m
Deal found 8/13![Multiple Airlines logo]()
$215
This United Airlines deal was found by Cheapflights users on 8/13. 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.
Sun 9/131:53 pm -
1 stop8h 51m
Deal found 8/13![United Airlines logo]()
$217
This Priceline deal was found by Cheapflights users on 8/11. 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.
Sun 1/109:00 am -
1 stop10h 27m
Deal found 8/11![Multiple Airlines logo]()
$218
This Priceline deal was found by Cheapflights users on 8/10. 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.
Mon 9/149:31 am -
1 stop10h 32m
Deal found 8/10![Multiple Airlines logo]()
$221
This Priceline deal was found by Cheapflights users on 8/13. 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 9/2912:12 pm -
1 stop11h 02m
Deal found 8/13![Alaska Airlines logo]()
$222
This Alaska Airlines deal was found by Cheapflights users on 8/13. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/187:00 am -
1 stop26h 41m
Deal found 8/13![Multiple Airlines logo]()
$224
This Priceline deal was found by Cheapflights users on 8/10. 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.
Mon 10/267:00 am -
1 stop9h 37m
Deal found 8/10![Multiple Airlines logo]()
$225
Find 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 August 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $324 (Delta) |
One-way from | $168 (Southwest) |
Popular in | December |
Cheapest in | February |
Average price | $496 |
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 2,558,603 searches. Data last updated August 13, 2026.
Use the filters below to find and compare flights from Ontario to Kaua'i that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioLihue
ONT Ontario - LIH Lihue
ONTLIH
Ontario
Tue 9/15
5:45 am-4:10 pm
2 stops13h 25m
Lihue
Tue 9/22
9:25 pm-1:35 pm
1 stop13h 10m
$412
OntarioLihue
ONT Ontario - LIH Lihue
ONTLIH
Ontario
Mon 8/31
8:00 am-2:15 pm
1 stop9h 15m
Lihue
Fri 9/4
7:10 pm-8:05 am
2 stops9h 55m
$436
OntarioLihue
ONT Ontario - LIH Lihue
ONTLIH
Ontario
Wed 11/11
7:30 am-3:14 pm
1 stop9h 44m
Lihue
Wed 11/18
11:29 pm-11:18 am
1 stop9h 49m
$453
OntarioLihue
ONT Ontario - LIH Lihue
ONTLIH
Ontario
Thu 11/26
5:50 am-1:15 pm
1 stop9h 25m
Lihue
Tue 12/1
8:25 am-10:10 pm
1 stop11h 45m
$470
OntarioLihue
ONT Ontario - LIH Lihue
ONTLIH
Ontario
Tue 11/17
9:00 am-6:05 pm
1 stop11h 05m
Lihue
Tue 11/24
8:25 am-10:45 pm
1 stop12h 20m
$482
OntarioLihue
ONT Ontario - LIH Lihue
ONTLIH
Ontario
Wed 9/2
6:02 am-2:39 pm
1 stop11h 37m
Lihue
Fri 9/11
8:12 am-10:10 pm
1 stop10h 58m
$484
OntarioLihue
ONT Ontario - LIH Lihue
ONTLIH
Ontario
Wed 10/7
11:56 am-7:14 pm
1 stop10h 18m
Lihue
Mon 10/12
9:51 pm-11:16 am
1 stop10h 25m
$494
OntarioLihue
ONT Ontario - LIH Lihue
ONTLIH
Ontario
Sun 9/27
6:00 am-4:15 pm
1 stop13h 15m
Lihue
Sun 9/27
9:25 pm-11:50 am
1 stop11h 25m
$496
OntarioLihue
ONT Ontario - LIH Lihue
ONTLIH
Ontario
Tue 9/1
11:56 am-7:16 pm
1 stop10h 20m
Lihue
Mon 9/14
9:54 pm-12:14 pm
2 stops11h 20m
$502
Quickest round-trip
OntarioLihue
ONT Ontario - LIH Lihue
ONTLIH
Ontario
Tue 10/27
6:00 am-11:31 am
1 stop8h 31m
Lihue
Sat 10/31
11:59 pm-12:29 pm
1 stop10h 30m
$534
Showing 1-10 of 22 resultsSorted by cheapest first
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.
ONT-LIH
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
ONT-zzFUS
ONT-LIH
What is the cheapest month to book a flight from Ontario to Kaua'i?
Currently, September is the cheapest month in which you can book a flight from Ontario to Kaua'i (average of $319). Flying from Ontario to Kaua'i in December is currently the most expensive (average of $1,213). 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.
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 August 13, 2026.
Get a feel of what it's like to fly with Southwest and Alaska Airlines from Ontario to Kaua'i by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
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.
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
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Alternative routes for Ontario to Kaua'i
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Kaua'i by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Kaua'i by cabin class
Find flights from Ontario to Kaua'i, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Kaua'i flights
Browse other Ontario and Kaua'i flight options. Last updated on August 13, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 2,558,603 searches. Data last updated August 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$329 | Average$574 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$471 | Average$588 | FlexibilityNo cancel fee | On-time63% |