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Cheap flights from the United States to Ontario from C$ 125

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 27/10. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YYZ
14 Oct — 21 Oct1
1 adult
1 adult, Economy

Cheap flight deals from USA to Ontario

Keep the following information in mind while searching for USA to Ontario flight deals. Data was last updated 14 September 2025.

Round-trip from

C$ 230

One-way from

C$ 125

Popular in

September

Cheapest in

January

Average price

C$ 381

Good round-trip deal

C$ 120 or less

Good one-way deal

C$ 93 or less
WestJet
  • WestJet
  • 18/10-25/10
  • 3 total stops
  • 23h 40m total
  • USA to Ontario
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27/10
  • 27/10
  • 1 total stop
  • 10h 01m total
  • USA to Ontario
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (C$ 89 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from USA to Ontario.
Search Deals
Price to beat on a one-way flight from USA to Ontario.
Search Deals

Find flight deals from USA to Ontario

Cheapest flights from USA to Ontario
Explore the most affordable flight options available from USA to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 September 2025.

Sat 18/107:00 a.m.LAX - YYZ
2 stops14h 31mWestJet
Sat 25/1012:00 p.m.YYZ - LAX
1 stop9h 09mWestJet
Deal found 11/9C$ 230
Fri 17/1011:10 p.m.LAX - YYZ
Nonstop4h 49mMultiple Airlines
Tue 21/1010:40 a.m.YYZ - LAX
Nonstop5h 20mMultiple Airlines
Deal found 12/9C$ 231
Tue 7/102:00 p.m.LAX - YYZ
Nonstop4h 50mMultiple Airlines
Wed 15/107:45 p.m.YYZ - LAX
Nonstop5h 26mMultiple Airlines
Deal found 14/9C$ 233
Wed 26/1112:15 p.m.LAX - YYZ
1 stop9h 11mWestJet
Wed 3/1210:00 a.m.YYZ - LAX
1 stop9h 58mWestJet
Deal found 12/9C$ 234
Tue 7/102:00 p.m.LAX - YYZ
Nonstop4h 50mMultiple Airlines
Sat 11/103:00 p.m.YYZ - LAX
1 stop9h 46mMultiple Airlines
Deal found 12/9C$ 235
Fri 17/107:00 a.m.LAX - YYZ
1 stop10h 52mWestJet
Sun 19/108:00 a.m.YYZ - LAX
2 stops13h 09mWestJet
Deal found 12/9C$ 237
Wed 15/106:05 p.m.LAX - YYZ
1 stop9h 47mWestJet
Sun 19/109:00 a.m.YYZ - LAX
2 stops15h 46mWestJet
Deal found 12/9C$ 238
Thu 6/1112:15 p.m.LAX - YYZ
1 stop9h 11mMultiple Airlines
Mon 10/1110:00 a.m.YYZ - LAX
Nonstop5h 39mMultiple Airlines
Deal found 12/9C$ 239
Fri 10/106:05 p.m.LAX - YYZ
1 stop9h 47mWestJet
Sat 18/1012:00 p.m.YYZ - LAX
1 stop9h 09mWestJet
Deal found 12/9C$ 241
Sat 25/1012:35 p.m.LAX - YYZ
2 stops14h 23mWestJet
Mon 27/108:00 a.m.YYZ - LAX
2 stops11h 58mWestJet
Deal found 11/9C$ 242
Fri 10/1011:40 a.m.LAX - YYZ
1 stop9h 42mWestJet
Tue 14/106:45 a.m.YYZ - LAX
1 stop14h 24mWestJet
Deal found 12/9C$ 244
Fri 24/1011:10 p.m.LAX - YYZ
Nonstop4h 49mWestJet
Mon 27/108:00 a.m.YYZ - LAX
2 stops11h 58mWestJet
Deal found 12/9C$ 245

Cheapflights Fare Finder

 
Customize your flight search to find flights from USA 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 14 September 2025.
Use the filters below to find and compare flights from the United States to Ontario that are best for you.

Fly from

USA

Fly to

Ontario

Route

Depart

Return

Price

Los AngelesToronto

LAX - YYZ

LAXYYZ

Los Angeles

Sun 28/9

7:00 p.m.-3:11 p.m.

1 stop17h 11m

Toronto Pearson Intl

Mon 29/9

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

Nonstop5h 18m

C$ 269

NewarkToronto

EWR - YTZ

EWRYTZ

Newark

Thu 2/10

7:40 p.m.-9:20 p.m.

Nonstop1h 40m

Toronto Island

Mon 6/10

6:45 a.m.-8:15 a.m.

Nonstop1h 30m

C$ 285

NewarkToronto

EWR - YTZ

EWRYTZ

Newark

Fri 24/10

7:40 p.m.-9:20 p.m.

Nonstop1h 40m

Toronto Island

Mon 27/10

7:00 a.m.-10:55 a.m.

1 stop3h 55m

C$ 285

NewarkToronto

EWR - YTZ

EWRYTZ

Newark

Sat 11/10

11:00 a.m.-12:40 p.m.

Nonstop1h 40m

Toronto Island

Tue 14/10

9:45 a.m.-11:15 a.m.

Nonstop1h 30m

C$ 285

NewarkToronto

EWR - YTZ

EWRYTZ

Newark

Sat 4/10

1:15 p.m.-2:55 p.m.

Nonstop1h 40m

Toronto Island

Sun 5/10

9:10 a.m.-1:30 p.m.

1 stop4h 20m

C$ 288

NewarkToronto

EWR - YTZ

EWRYTZ

Newark

Sun 5/10

2:15 p.m.-6:18 p.m.

1 stop4h 03m

Toronto Island

Wed 8/10

7:00 a.m.-12:30 p.m.

1 stop5h 30m

C$ 293

NewarkToronto

EWR - YTZ

EWRYTZ

Newark

Thu 6/11

3:45 p.m.-10:23 p.m.

1 stop6h 38m

Toronto Island

Thu 13/11

7:00 a.m.-10:55 a.m.

1 stop3h 55m

C$ 293

Los AngelesToronto

LAX - YYZ

LAXYYZ

Los Angeles

Mon 20/10

12:35 p.m.-6:12 a.m.

2 stops14h 37m

Toronto Pearson Intl

Wed 22/10

12:00 p.m.-6:09 p.m.

1 stop9h 09m

C$ 299

Los AngelesToronto

LAX - YYZ

LAXYYZ

Los Angeles

Sat 18/10

12:35 p.m.-6:52 a.m.

2 stops15h 17m

Toronto Pearson Intl

Tue 21/10

10:00 a.m.-5:16 p.m.

1 stop10h 16m

C$ 300

Los AngelesToronto

LAX - YYZ

LAXYYZ

Los Angeles

Wed 29/10

1:40 p.m.-9:22 p.m.

Nonstop4h 42m

Toronto Pearson Intl

Wed 5/11

10:00 a.m.-12:39 p.m.

Nonstop5h 39m

C$ 306

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

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

Have a flexible travel schedule? Discover the best time to fly to Ontario from USA 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 the United States to Ontario

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

Currently, January is the cheapest month in which you can book a flight from USA to Region of Ontario (average of C$ 169). Flying from USA to Region of Ontario in July is currently the most expensive (average of C$ 258). 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 US to ON?

Find hourly flight availability from USA 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 14 September 2025.

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

Weekly flight availability from USA to Region of Ontario

Explore weekly flight availability from USA to Ontario. 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 14 September 2025.

The most flights from US0 to CAON are scheduled on a Monday (22 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (19 on average).

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 14 September 2025.
See what other customers who have flown with Porter Airlines,United Airlines, andWestJet from the United States to Ontario have to say. 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.
Porter Airlines
7.9
Good
363 reviews
Check prices

Entertainment

7.0

Overall

7.9

Crew

8.6

Food

7.6

Comfort

7.9

Boarding

8.1

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
7.9
Good
363 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Entertainment

7.0

Overall

7.9

Crew

8.6

Food

7.6

Comfort

7.9

Boarding

8.1

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
8,931 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Entertainment

7.0

Overall

7.9

Crew

8.6

Food

7.6

Comfort

7.9

Boarding

8.1

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
3,091 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Entertainment

7.0

Overall

7.9

Crew

8.6

Food

7.6

Comfort

7.9

Boarding

8.1

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
10,000 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Entertainment

7.0

Overall

7.9

Crew

8.6

Food

7.6

Comfort

7.9

Boarding

8.1

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.
Flair Airlines
6.0
Okay
250 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Entertainment

7.0

Overall

7.9

Crew

8.6

Food

7.6

Comfort

7.9

Boarding

8.1

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 USA to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    For as low as C$ 285, Porter Airlines can have you in Region of Ontario from USA in 1h 40m. The distance between USA and Region of Ontario is about 539 km. This flight may include one or multiple stops.

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

    One-way options have recently been found by users for as low as C$ 130 on United Airlines. Other airlines that offer cheap prices include Air Canada from C$ 136 and Porter Airlines from C$ 137 one-way.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from USA to Region of Ontario (average of C$ 169). Flying from USA to Region of Ontario in July is currently the most expensive (average of C$ 258). 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 USA to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from USA to Ontario

Discover the top 8 airlines that operate flights from USA 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 14 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Flair AirlinesCheapestC$ 129AverageC$ 322FlexibilityNo cancel feeOn-timeN/A
Search Flair Airlines flights
Air CanadaCheapestC$ 139AverageC$ 565FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Porter AirlinesCheapestC$ 146AverageC$ 446FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
DeltaCheapestC$ 148AverageC$ 334FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapestC$ 177AverageC$ 408FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
WestJetCheapestC$ 187AverageC$ 474FlexibilityNo cancel feeOn-time60%
Search WestJet flights
United AirlinesCheapestC$ 204AverageC$ 532FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air TransatCheapestC$ 240AverageC$ 667FlexibilityNo 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 USA to Ontario?

Deals for USA to Ontario 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 USA to Ontario?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Ontario from USA.

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

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

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

Yes, Cheapflights offers price alerts on USA to Ontario flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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