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Cheap flights from Ontario to Irvine from C$ 158

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 20/8. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — LAX
6 Aug — 13 Aug1
1 adult

Cheap flight deals from Ontario to Irvine

Keep the following information in mind while searching for Ontario to Irvine flight deals. Data was last updated 1 August 2025.

Round-trip from

C$ 246

One-way from

C$ 158

Popular in

December

Cheapest in

September

Average price

C$ 448
WestJet
  • WestJet
  • 19/9-28/9
  • Nonstop
  • 10h 15m total
  • Ontario to Irvine
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WestJet
  • WestJet
  • 20/8
  • 1 total stop
  • 11h 12m total
  • Ontario to Irvine
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (C$ 66 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
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Find 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 1 August 2025.

Fri 19/97:45 p.m.YYZ - LAX
Nonstop5h 26mWestJet
Sun 28/911:10 p.m.LAX - YYZ
Nonstop4h 49mWestJet
Deal found 30/7C$ 246
Thu 4/910:40 a.m.YYZ - LAX
Nonstop5h 20mPorter Airlines
Wed 10/92:00 p.m.LAX - YYZ
Nonstop4h 50mPorter Airlines
Deal found 30/7C$ 248
Thu 4/910:40 a.m.YYZ - LAX
Nonstop5h 20mMultiple Airlines
Wed 10/911:10 p.m.LAX - YYZ
Nonstop4h 49mMultiple Airlines
Deal found 31/7C$ 257
Wed 20/86:00 a.m.YHM - LAX
1 stop11h 12mWestJet
Wed 27/811:40 a.m.LAX - YHM
1 stop10h 01mWestJet
Deal found 30/7C$ 266
Wed 3/96:35 p.m.YYZ - LAX
Nonstop5h 18mAir Canada
Mon 8/910:30 p.m.LAX - YYZ
1 stop9h 09mAir Canada
Deal found 29/7C$ 274
Fri 12/98:25 p.m.YTZ - LAX
1 stop17h 40mAir Canada
Sat 20/910:30 p.m.LAX - YTZ
1 stop8h 15mAir Canada
Deal found 29/7C$ 274
Fri 22/86:00 a.m.YKF - LAX
1 stop11h 12mWestJet
Wed 27/811:40 a.m.LAX - YKF
1 stop10h 06mWestJet
Deal found 29/7C$ 275
Thu 21/83:45 p.m.YOW - LAX
1 stop9h 02mWestJet
Wed 27/811:40 a.m.LAX - YOW
1 stop10h 01mWestJet
Deal found 29/7C$ 300
Wed 20/88:10 a.m.YUL - LAX
Nonstop5h 57mAir Canada
Sun 31/810:30 p.m.LAX - YUL
Nonstop5h 29mAir Canada
Deal found 29/7C$ 302
Fri 5/99:00 a.m.YYZ - LAX
1 stop7h 26mUnited Airlines
Fri 19/911:16 p.m.LAX - YYZ
1 stop7h 48mUnited Airlines
Deal found 31/7C$ 306
Wed 20/87:00 a.m.YUL - LAX
2 stops14h 10mWestJet
Wed 27/811:40 a.m.LAX - YUL
1 stop10h 03mWestJet
Deal found 30/7C$ 313
Sun 31/86:45 a.m.YUL - LAX
1 stop9h 15mPorter Airlines
Sat 6/92:00 p.m.LAX - YUL
1 stop7h 37mPorter Airlines
Deal found 29/7C$ 314

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 629,999 searches. Data last updated 1 August 2025.
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

TorontoLos Angeles

YYZ - LAX

YYZLAX

Toronto Pearson Intl

Fri 19/9

7:45 p.m.-10:11 p.m.

Nonstop5h 26m

Los Angeles

Sun 28/9

11:10 p.m.-6:59 a.m.

Nonstop4h 49m

C$ 246

TorontoLos Angeles

YYZ - LAX

YYZLAX

Toronto Pearson Intl

Thu 4/9

10:40 a.m.-1:00 p.m.

Nonstop5h 20m

Los Angeles

Wed 10/9

2:00 p.m.-9:50 p.m.

Nonstop4h 50m

C$ 248

TorontoLos Angeles

YYZ - LAX

YYZLAX

Toronto Pearson Intl

Fri 12/9

10:40 a.m.-1:00 p.m.

Nonstop5h 20m

Los Angeles

Sat 20/9

9:55 p.m.-5:46 a.m.

Nonstop4h 51m

C$ 250

HamiltonLos Angeles

YHM - LAX

YHMLAX

Hamilton

Wed 20/8

6:00 a.m.-2:12 p.m.

1 stop11h 12m

Los Angeles

Wed 27/8

11:40 a.m.-12:41 a.m.

1 stop10h 01m

C$ 266

TorontoLos Angeles

YYZ - LAX

YYZLAX

Toronto Pearson Intl

Wed 3/9

6:35 p.m.-8:53 p.m.

Nonstop5h 18m

Los Angeles

Wed 10/9

10:30 p.m.-10:39 a.m.

1 stop9h 09m

C$ 274

TorontoLos Angeles

YTZ - LAX

YTZLAX

Toronto Island

Fri 12/9

8:25 p.m.-11:05 a.m.

1 stop17h 40m

Los Angeles

Sat 20/9

10:30 p.m.-9:45 a.m.

1 stop8h 15m

C$ 274

TorontoLos Angeles

YKF - LAX

YKFLAX

Toronto Region of Waterloo Intl

Fri 22/8

6:00 a.m.-2:12 p.m.

1 stop11h 12m

Los Angeles

Wed 27/8

11:40 a.m.-12:46 a.m.

1 stop10h 06m

C$ 275

OttawaLos Angeles

YOW - LAX

YOWLAX

Ottawa

Thu 21/8

3:45 p.m.-9:47 p.m.

1 stop9h 02m

Los Angeles

Wed 27/8

11:40 a.m.-12:41 a.m.

1 stop10h 01m

C$ 300

MontrealLos Angeles

YUL - LAX

YULLAX

Montreal Pierre Elliott Trudeau Intl

Wed 20/8

8:10 a.m.-11:07 a.m.

Nonstop5h 57m

Los Angeles

Sun 31/8

10:30 p.m.-6:59 a.m.

Nonstop5h 29m

C$ 302

TorontoLos Angeles

YYZ - LAX

YYZLAX

Toronto Pearson Intl

Fri 5/9

9:00 a.m.-1:26 p.m.

1 stop7h 26m

Los Angeles

Fri 19/9

11:16 p.m.-10:04 a.m.

1 stop7h 48m

C$ 306

Flights are sorted by cheapest round-trip flights first.

Deals found on 31/7

Showing 1-10 of 60 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

What is the cheapest month to book a flight from Region of Ontario to Irvine?

Currently, September is the cheapest month in which you can book a flight from Region of Ontario to Irvine (average of C$ 229). Flying from Region of Ontario to Irvine in March is currently the most expensive (average of C$ 297). 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 IR9?

Find hourly flight availability from Ontario to Irvine. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 1 August 2025.

When flying from Region of Ontario to Irvine, 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 Region of Ontario to Irvine

Explore weekly flight availability from Ontario to Irvine. 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 1 August 2025.

The most flights from CAON to IR9 are scheduled on a Thursday (20 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (9 on average).

Reviews of airlines servicing Irvine

Get insights into the airlines that provide service to Irvine. 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 Irvine. Reviews last updated 1 August 2025.
Check out reviews from past customers who have flown with Porter Airlines,Delta, andAir Transat from Ontario to Irvine to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
318 reviews
Check prices

Comfort

8.0

Boarding

8.2

Food

7.6

Crew

8.7

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience
Porter Airlines
8.0
Very good
318 reviews
Porter Airlines
8.0
Very good
318 reviews
Check prices

Comfort

8.0

Boarding

8.2

Food

7.6

Crew

8.7

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience
Delta
8.0
Very good
7,981 reviews
Porter Airlines
8.0
Very good
318 reviews
Check prices

Comfort

8.0

Boarding

8.2

Food

7.6

Crew

8.7

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience
Air Transat
7.7
Good
424 reviews
Porter Airlines
8.0
Very good
318 reviews
Check prices

Comfort

8.0

Boarding

8.2

Food

7.6

Crew

8.7

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience
United Airlines
7.4
Good
8,900 reviews
Porter Airlines
8.0
Very good
318 reviews
Check prices

Comfort

8.0

Boarding

8.2

Food

7.6

Crew

8.7

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience
American Airlines
7.2
Good
10,000 reviews
Porter Airlines
8.0
Very good
318 reviews
Check prices

Comfort

8.0

Boarding

8.2

Food

7.6

Crew

8.7

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience

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 are the cheapest airlines to fly from Region of Ontario to Irvine one-way?

    One-way options have recently been found by users for as low as C$ 158 on WestJet. Other airlines that offer cheap prices include Air Transat from C$ 179 and Porter Airlines from C$ 184 one-way.

  • What are the most popular routes from Region of Ontario to Irvine?

    The most popular flight routes from Region of Ontario to Irvine are Toronto Pearson Intl - Los Angeles, Montreal Pierre Elliott Trudeau Intl - Los Angeles and Toronto Island - Los Angeles.

  • What are the most reliable airlines from Region of Ontario to Irvine?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Region of Ontario to Irvine on time: Porter Airlines (90%), Air Transat (90%), Brussels Airlines (72%).

  • What are the cheapest flights from Region of Ontario to Irvine?

    While on average a flight from Region of Ontario to Irvine is generally C$ 1,639, our data shows the cheapest flight currently is C$ 169. When looking at the most popular route, (Toronto Pearson Intl - Los Angeles), you can expect to pay C$ 228 for that flight.

  • 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.

  • What is the cheapest month to book a flight from Region of Ontario to Irvine?

    Currently, September is the cheapest month in which you can book a flight from Region of Ontario to Irvine (average of C$ 229). Flying from Region of Ontario to Irvine in March is currently the most expensive (average of C$ 297). 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

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Alternative routes for Ontario to Irvine

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Ontario to Irvine

Discover the top 7 airlines that operate flights from Ontario to Irvine. 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 1 August 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 133AverageC$ 547FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
WestJetCheapestC$ 201AverageC$ 438FlexibilityNo cancel feeOn-time60%
Search WestJet flights
DeltaCheapestC$ 249AverageC$ 461FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Porter AirlinesCheapestC$ 261AverageC$ 399FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
United AirlinesCheapestC$ 284AverageC$ 567FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air TransatCheapestC$ 299AverageC$ 514FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
Air CanadaCheapestC$ 303AverageC$ 555FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ontario to Irvine?

Deals for Ontario to Irvine flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Ontario to Irvine?

Millions of users choose and trust Cheapflights to book the best flight deals from Ontario to Irvine for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Ontario to Irvine with no change fees?

Yes, we can. To see specific flights from Ontario to Irvine with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Ontario to Irvine become cheaper?

Yes! Start tracking prices for Ontario to Irvine flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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