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$63+ Cheap flights from Ontario (ONT) to Irvine, CA

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 2/23. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LAX
Mar 13 — Mar 201
Fri 3/13
Fri 3/20
1 adult, Economy
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Cheap flight deals from Ontario to Irvine

Cheapest flights from Ontario to Irvine
Explore the most affordable flight options available from Ontario to Irvine. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 11, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/116:15 am
ONT
-
LAX
1 stop18h 01m
Multiple Airlines
Wed 3/1810:03 am
LAX
-
ONT
1 stop11h 00m
Multiple Airlines
Deal found 2/11$130
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/99:40 pm
ONT
-
LAX
1 stop14h 59m
Frontier
Mon 3/168:19 pm
LAX
-
ONT
1 stop17h 09m
Frontier
Deal found 2/9$131
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/243:22 pm
ONT
-
LAX
1 stop16h 53m
Multiple Airlines
Wed 2/254:07 pm
LAX
-
ONT
1 stop21h 04m
Multiple Airlines
Deal found 2/10$136
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/172:23 pm
ONT
-
LAX
1 stop22h 16m
Frontier
Tue 4/79:05 pm
LAX
-
ONT
2 stops26h 51m
Frontier
Deal found 2/9$141
This Kiwi.com deal was found by Cheapflights users on 2/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/210:27 pm
ONT
-
LAX
1 stop8h 54m
Frontier
Sun 4/54:28 pm
LAX
-
ONT
1 stop15h 36m
Frontier
Deal found 2/8$146
This Kiwi.com deal was found by Cheapflights users on 2/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/218:09 pm
ONT
-
LAX
1 stop11h 17m
Frontier
Tue 2/243:57 pm
LAX
-
ONT
1 stop26h 25m
Frontier
Deal found 2/7$151
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/77:10 pm
ONT
-
LAX
1 stop12h 10m
Multiple Airlines
Mon 3/99:12 am
LAX
-
ONT
1 stop6h 25m
Multiple Airlines
Deal found 2/9$155
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3012:59 am
ONT
-
LAX
1 stop7h 41m
Frontier
Mon 5/119:28 pm
LAX
-
ONT
1 stop16h 12m
Frontier
Deal found 2/9$161
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/233:30 pm
ONT
-
LAX
1 stop21h 09m
Multiple Airlines
Fri 3/274:07 pm
LAX
-
ONT
1 stop21h 21m
Multiple Airlines
Deal found 2/10$169
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/279:49 pm
ONT
-
LAX
1 stop14h 35m
Frontier
Mon 3/309:28 pm
LAX
-
ONT
1 stop16h 00m
Frontier
Deal found 2/10$174

Find flight deals from Ontario to Irvine

Keep the following information in mind while searching for Ontario to Irvine flight deals. Data was last updated February 11, 2026.

Round-trip from

$130
(Kiwi.com)

One-way from

$63
(Kiwi.com)
From Ontario to Irvine
Search Deals
One-way flight from Ontario to Irvine
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Irvine 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 February 11, 2026.
Use the filters below to find and compare flights from Ontario to Irvine that are best for you.

Fly from

Ontario

Fly to

Irvine

Route

Depart

Return

Price

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Sun 3/15

1:55 pm-9:06 am

1 stop19h 11m

Los Angeles

Tue 3/17

6:30 pm-1:28 pm

1 stop18h 58m

$129

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Wed 3/11

10:03 pm-8:20 am

1 stop10h 17m

Los Angeles

Wed 3/18

4:07 pm-9:03 pm

1 stop4h 56m

$129

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Wed 3/11

6:15 am-12:16 am

1 stop18h 01m

Los Angeles

Wed 3/18

1:39 pm-9:03 pm

1 stop7h 24m

$130

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Tue 3/17

2:23 pm-9:06 am

1 stop18h 43m

Los Angeles

Tue 4/7

8:58 pm-11:56 pm

1 stop26h 58m

$130

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Tue 3/10

2:23 pm-8:15 am

1 stop17h 52m

Los Angeles

Tue 3/17

1:39 pm-1:28 pm

1 stop23h 49m

$130

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Mon 3/9

9:40 pm-12:39 pm

1 stop14h 59m

Los Angeles

Mon 3/16

8:19 pm-1:28 pm

1 stop17h 09m

$131

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Thu 4/16

11:44 am-5:11 pm

1 stop5h 27m

Los Angeles

Mon 4/20

9:28 pm-1:40 pm

1 stop16h 12m

$131

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Tue 3/31

2:23 pm-9:06 am

1 stop18h 43m

Los Angeles

Fri 4/3

10:53 pm-11:39 am

1 stop12h 46m

$131

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Tue 2/24

3:22 pm-8:15 am

1 stop16h 53m

Los Angeles

Wed 2/25

4:07 pm-1:11 pm

1 stop21h 04m

$136

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Tue 3/17

2:23 pm-12:39 pm

1 stop22h 16m

Los Angeles

Tue 4/7

9:05 pm-11:56 pm

2 stops26h 51m

$141

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/10

Showing 1-10 of 22 results
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Best time to book a flight from Ontario to Irvine

Have a flexible travel schedule? Discover the best time to fly to Irvine 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 Irvine
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Irvine. 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 from for flights from Ontario to Irvine?

    Located just 3.1 mi from the city center, Ontario is the airport most travelers will use when flying to Irvine from Ontario. Booking flights from Ontario (ONT) to Irvine should be relatively easy as there are 0 daily outbound flights to Irvine from 0 different airlines.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Irvine by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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