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Cheap flights from Los Angeles to Ontario from C$ 138

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 27/11. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YYZ
27 Nov — 4 Dec1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Los Angeles to Ontario

Enter your travel dates to find the best prices.

Cheapest flights from Los Angeles to Ontario
Explore the most affordable flight options available from Los Angeles to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 October 2025.

Fri 5/121:40 p.m.LAX - YYZ
Nonstop4h 43mPorter Airlines
Fri 12/1210:00 a.m.YYZ - LAX
Nonstop5h 36mPorter Airlines
Deal found 26/10C$ 352
Tue 2/121:40 p.m.LAX - YYZ
Nonstop4h 43mPorter Airlines
Thu 4/1210:00 a.m.YYZ - LAX
Nonstop5h 36mPorter Airlines
Deal found 27/10C$ 355
Tue 2/121:40 p.m.LAX - YYZ
Nonstop4h 43mPorter Airlines
Sun 7/1210:00 a.m.YYZ - LAX
Nonstop5h 36mPorter Airlines
Deal found 28/10C$ 357
Thu 27/1111:30 a.m.LAX - YYZ
Nonstop4h 45mMultiple Airlines
Wed 3/1210:00 a.m.YYZ - LAX
Nonstop5h 36mMultiple Airlines
Deal found 27/10C$ 359
Thu 4/1211:50 a.m.LAX - YYZ
2 stops15h 08mMultiple Airlines
Tue 9/1210:00 a.m.YYZ - LAX
Nonstop5h 36mMultiple Airlines
Deal found 26/10C$ 366
Thu 27/117:45 a.m.LAX - YYZ
Nonstop4h 45mAir Canada
Wed 3/126:55 p.m.YYZ - LAX
Nonstop5h 33mAir Canada
Deal found 26/10C$ 368
Fri 5/1211:50 a.m.LAX - YYZ
1 stop9h 48mMultiple Airlines
Fri 12/1210:00 a.m.YYZ - LAX
Nonstop5h 36mMultiple Airlines
Deal found 26/10C$ 371
Thu 27/1111:15 p.m.LAX - YYZ
1 stop11h 50mMultiple Airlines
Thu 4/1210:00 a.m.YYZ - LAX
Nonstop5h 36mMultiple Airlines
Deal found 28/10C$ 372
Thu 13/114:42 p.m.LAX - YTZ
1 stop23h 15mMultiple Airlines
Sun 16/119:15 a.m.YTZ - LAX
1 stop26h 41mMultiple Airlines
Deal found 27/10C$ 417
Fri 28/1110:50 a.m.LAX - YKF
2 stops15h 38mMultiple Airlines
Thu 4/127:05 a.m.YKF - LAX
2 stops17h 03mMultiple Airlines
Deal found 28/10C$ 431
Fri 5/127:00 a.m.LAX - YOW
2 stops14h 42mWestJet
Mon 8/125:45 p.m.YOW - LAX
1 stop20h 42mWestJet
Deal found 28/10C$ 438
Sun 9/111:20 a.m.LAX - YTZ
1 stop14h 37mMultiple Airlines
Fri 14/112:30 p.m.YTZ - LAX
1 stop21h 26mMultiple Airlines
Deal found 26/10C$ 442

Cheap flight deals from Los Angeles to Ontario

Keep the following information in mind while searching for Los Angeles to Ontario flight deals. Data was last updated 28 October 2025.

Round-trip from

C$ 352

One-way from

C$ 138

Popular in

December

Cheapest in

May

Average price

C$ 427

Good round-trip deal

C$ 234 or less

Good one-way deal

C$ 147 or less
Porter Airlines
  • Porter Airlines
  • 5/12-12/12
  • Nonstop
  • 10h 19m total
  • Los Angeles to Ontario
Search Deals
27/11
  • 27/11
  • 1 total stop
  • 17h 45m total
  • Los Angeles to Ontario
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (C$ 112 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from Los Angeles to Ontario.
Search Deals
Price to beat on a one-way flight from Los Angeles to Ontario.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Los Angeles to Ontario 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 28 October 2025.
Use the filters below to find and compare flights from Los Angeles to Ontario that are best for you.

Fly from

Los Angeles

Fly to

Ontario

Route

Depart

Return

Price

Los AngelesToronto

LAX - YKF

LAXYKF

Los Angeles

Wed 18/2

11:50 a.m.-5:29 a.m.

2 stops14h 39m

Toronto Region of Waterloo Intl

Sat 21/2

7:00 p.m.-11:27 a.m.

1 stop19h 27m

C$ 407

Los AngelesToronto

LAX - YKF

LAXYKF

Los Angeles

Mon 9/3

11:50 a.m.-5:29 a.m.

2 stops14h 39m

Toronto Region of Waterloo Intl

Thu 12/3

6:20 a.m.-10:03 p.m.

1 stop18h 43m

C$ 420

Los AngelesToronto

LAX - YKF

LAXYKF

Los Angeles

Thu 2/4

8:40 p.m.-5:29 a.m.

2 stops29h 49m

Toronto Region of Waterloo Intl

Tue 7/4

6:20 a.m.-10:03 p.m.

1 stop18h 43m

C$ 449

Los AngelesToronto

LAX - YKF

LAXYKF

Los Angeles

Fri 28/11

10:50 a.m.-5:28 a.m.

2 stops15h 38m

Toronto Region of Waterloo Intl

Thu 4/12

7:05 a.m.-10:03 p.m.

1 stop17h 58m

C$ 450

Los AngelesToronto

LAX - YKF

LAXYKF

Los Angeles

Sun 5/4

7:00 a.m.-5:29 a.m.

1 stop19h 29m

Toronto Region of Waterloo Intl

Sat 11/4

7:00 p.m.-11:00 a.m.

2 stops19h 00m

C$ 470

Los AngelesToronto

LAX - YKF

LAXYKF

Los Angeles

Wed 19/11

11:50 a.m.-5:28 a.m.

2 stops14h 38m

Toronto Region of Waterloo Intl

Mon 24/11

6:20 a.m.-4:58 p.m.

1 stop13h 38m

C$ 473

Los AngelesHamilton

LAX - YHM

LAXYHM

Los Angeles

Thu 8/1

7:00 a.m.-1:22 p.m.

1 stop27h 22m

Hamilton

Tue 13/1

5:45 a.m.-10:03 p.m.

1 stop19h 18m

C$ 481

Los AngelesToronto

LAX - YKF

LAXYKF

Los Angeles

Fri 9/1

7:00 a.m.-5:28 a.m.

1 stop19h 28m

Toronto Region of Waterloo Intl

Mon 12/1

6:20 a.m.-11:00 a.m.

2 stops31h 40m

C$ 483

Los AngelesToronto

LAX - YKF

LAXYKF

Los Angeles

Wed 19/11

11:50 a.m.-5:28 a.m.

2 stops14h 38m

Toronto Region of Waterloo Intl

Sat 22/11

6:20 a.m.-4:58 p.m.

1 stop13h 38m

C$ 491

Los AngelesToronto

LAX - YYZ

LAXYYZ

Los Angeles

Mon 10/11

10:30 p.m.-8:57 a.m.

1 stop7h 27m

Toronto Pearson Intl

Sun 7/12

9:52 a.m.-2:31 p.m.

1 stop7h 39m

C$ 494

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/10

Showing 1-10 of 60 results
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Best time to book a flight from Los Angeles to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Los Angeles 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 Los Angeles to Ontario

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

Currently, July is the cheapest month in which you can book a flight from Los Angeles to Region of Ontario (average of C$ 127). Flying from Los Angeles to Region of Ontario in January is currently the most expensive (average of C$ 197). 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 LAX to ON?

Find hourly flight availability from Los Angeles to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 28 October 2025.

When flying from Los Angeles to Region of Ontario, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 35% versus a flight in the afternoon.

What is the cheapest day to fly from Los Angeles to Region of Ontario?

Use this chart to determine the cheapest time to fly round-trip from Los Angeles to Ontario. Price data was last updated on 16 December 2024.

Travelers seeking maximum savings on their Los Angeles to Region of Ontario flight should consider departing on Saturday afternoons when fares are most often at their lowest. Tuesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated 28 October 2025.
Read through reviews of airlines operating flights from Los Angeles to Ontario, such as Porter Airlines,Air Transat, andUnited Airlines. 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
384 reviews
Check prices

Boarding

8.2

Crew

8.6

Overall

8.0

Comfort

8.0

Food

7.6

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Porter Airlines
8.0
Very good
384 reviews
Porter Airlines
8.0
Very good
384 reviews
Check prices

Boarding

8.2

Crew

8.6

Overall

8.0

Comfort

8.0

Food

7.6

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Air Transat
7.8
Good
469 reviews
Porter Airlines
8.0
Very good
384 reviews
Check prices

Boarding

8.2

Crew

8.6

Overall

8.0

Comfort

8.0

Food

7.6

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
United Airlines
7.4
Good
8,996 reviews
Porter Airlines
8.0
Very good
384 reviews
Check prices

Boarding

8.2

Crew

8.6

Overall

8.0

Comfort

8.0

Food

7.6

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
WestJet
7.2
Good
3,148 reviews
Porter Airlines
8.0
Very good
384 reviews
Check prices

Boarding

8.2

Crew

8.6

Overall

8.0

Comfort

8.0

Food

7.6

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Air Canada
7.1
Good
10,370 reviews
Porter Airlines
8.0
Very good
384 reviews
Check prices

Boarding

8.2

Crew

8.6

Overall

8.0

Comfort

8.0

Food

7.6

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.

Related info for your journey

Find useful and relevant information for your journey from Los Angeles to Ontario. 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 Los Angeles to Ontario?

    Los Angeles (LAX), located 15.1 km from the city centre, is the airport you fly out of when you book flights from Los Angeles to Ontario.

  • How long is the flight from Los Angeles to Region of Ontario?

    Airlines like WestJet, Delta, and United Airlines fly from Los Angeles to Region of Ontario in about 7h 27m. The time it takes to get you to your destination can typically vary by up to 7h 12m. The distance between Los Angeles and Region of Ontario is about 3492 km. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Los Angeles to Region of Ontario one-way?

    C$ 180 is the cheapest one-way deal found within the past few days, from Porter Airlines. You may also be able to find cheap deals on WestJet and American Airlines, with prices starting from C$ 182 and C$ 200, respectively.

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

    When deciding which route to take from Los Angeles to Region of Ontario consider Los Angeles - Toronto Pearson Intl, Los Angeles - Montreal Pierre Elliott Trudeau Intl or Los Angeles - Toronto Island as they are the most popular.

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

    No one likes to see their flight delayed. When booking a flight from Los Angeles to Region of Ontario consider choosing Sun Country Air (100%), Brussels Airlines (91%) or Austrian Airlines (90%) as they are the most reliable in getting you off to your destination on time.

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

    On average you can expect to pay C$ 334 for a flight from Los Angeles to Region of Ontario. The cheapest flight overall is C$ 106 while the most popular route, (Los Angeles - Toronto Pearson Intl) is currently priced at C$ 352.

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

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

  • How can I find direct flights from Los Angeles to Ontario?

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

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

    Yes. Cheapflights offers flight deals from Los Angeles to Ontario 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 Los Angeles to Region of Ontario?

    Currently, July is the cheapest month in which you can book a flight from Los Angeles to Region of Ontario (average of C$ 127). Flying from Los Angeles to Region of Ontario in January is currently the most expensive (average of C$ 197). 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 Los Angeles to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Los Angeles to Ontario

Discover the top 5 airlines that operate flights from Los Angeles to Ontario. 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 28 October 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 148AverageC$ 464FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
United AirlinesCheapestC$ 164AverageC$ 465FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 211AverageC$ 511FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
WestJetCheapestC$ 219AverageC$ 296FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air TransatCheapestC$ 304AverageC$ 701FlexibilityNo cancel feeOn-time50%
Search Air Transat 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 Los Angeles to Ontario?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Los Angeles to Ontario. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Los Angeles to Ontario 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 Los Angeles to Ontario with no change fees?

Certainly. Search results for flights to Ontario from Los Angeles shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes! Start tracking prices for Los Angeles to Ontario 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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