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Cheap flights from the United States to Ontario from C$ 90

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 21/5. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YYZ
20 Apr — 27 Apr1
1 adult

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 15 April 2025.

Round-trip from

C$ 131

One-way from

C$ 90

Popular in

May

Cheapest in

January

Average price

C$ 282

Good round-trip deal

C$ 69 or less

Good one-way deal

C$ 52 or less
Flair Airlines
  • Flair Airlines
  • 15/5-18/5
  • Nonstop
  • 3h 50m total
  • USA to Ontario
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Porter Airlines
  • Porter Airlines
  • 21/5
  • 1 total stop
  • 3h 50m total
  • USA to Ontario
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (C$ 32 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from USA to Ontario.
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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 15 April 2025.

Thu 15/510:45 a.m.JFK - YYZ
Nonstop1h 45mFlair Airlines
Sun 18/57:55 a.m.YYZ - JFK
Nonstop2h 05mFlair Airlines
Deal found 15/4C$ 131
Thu 8/510:45 a.m.JFK - YYZ
Nonstop1h 45mMultiple Airlines
Sat 17/54:00 p.m.YYZ - JFK
1 stop5h 48mMultiple Airlines
Deal found 14/4C$ 200
Sun 27/711:10 p.m.LAX - YYZ
Nonstop4h 50mWestJet
Thu 31/712:00 p.m.YYZ - LAX
2 stops11h 23mWestJet
Deal found 15/4C$ 202
Thu 15/54:05 p.m.LAX - YYZ
Nonstop4h 53mMultiple Airlines
Tue 20/57:45 p.m.YYZ - LAX
Nonstop5h 25mMultiple Airlines
Deal found 15/4C$ 222
Sat 19/79:55 a.m.LGA - YYZ
Nonstop1h 40mPorter Airlines
Sun 20/72:50 p.m.YYZ - LGA
Nonstop1h 40mPorter Airlines
Deal found 15/4C$ 229
Thu 29/59:55 a.m.LGA - YYZ
Nonstop1h 40mMultiple Airlines
Thu 5/69:00 a.m.YYZ - LGA
1 stop5h 45mMultiple Airlines
Deal found 14/4C$ 234
Tue 13/58:45 p.m.LGA - YYZ
Nonstop1h 42mAir Canada
Tue 20/54:55 p.m.YYZ - LGA
Nonstop1h 36mAir Canada
Deal found 15/4C$ 246
Wed 14/53:40 p.m.JFK - YYZ
Nonstop1h 45mAir Canada
Wed 21/58:55 p.m.YYZ - JFK
Nonstop1h 50mAir Canada
Deal found 13/4C$ 252
Tue 17/610:25 a.m.LGA - YYZ
1 stop5h 21mUnited Airlines
Tue 17/67:25 p.m.YYZ - LGA
Nonstop1h 34mUnited Airlines
Deal found 14/4C$ 256
Thu 15/510:00 a.m.EWR - YTZ
Nonstop1h 40mPorter Airlines
Sun 18/512:00 p.m.YTZ - EWR
1 stop5h 40mPorter Airlines
Deal found 15/4C$ 257
Fri 30/57:40 p.m.EWR - YTZ
Nonstop1h 40mMultiple Airlines
Fri 6/64:20 p.m.YTZ - EWR
1 stop3h 33mMultiple Airlines
Deal found 15/4C$ 261
Mon 5/59:50 p.m.SFO - YYZ
1 stop16h 30mMultiple Airlines
Mon 12/510:00 a.m.YYZ - SFO
2 stops30h 03mMultiple Airlines
Deal found 14/4C$ 261

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 15 April 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

New YorkToronto

JFK - YYZ

JFKYYZ

New York John F Kennedy Intl

Thu 15/5

10:45 a.m.-12:30 p.m.

Nonstop1h 45m

Toronto Pearson Intl

Sun 18/5

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

Nonstop2h 05m

C$ 131

Los AngelesToronto

LAX - YYZ

LAXYYZ

Los Angeles

Wed 2/7

3:00 p.m.-5:51 a.m.

2 stops11h 51m

Toronto Pearson Intl

Thu 10/7

1:30 p.m.-9:47 p.m.

1 stop11h 17m

C$ 197

New YorkToronto

JFK - YYZ

JFKYYZ

New York John F Kennedy Intl

Thu 8/5

10:45 a.m.-12:30 p.m.

Nonstop1h 45m

Toronto Pearson Intl

Sat 17/5

4:00 p.m.-9:48 p.m.

1 stop5h 48m

C$ 200

Los AngelesToronto

LAX - YYZ

LAXYYZ

Los Angeles

Thu 5/6

11:40 a.m.-12:24 a.m.

1 stop9h 44m

Toronto Pearson Intl

Sun 15/6

10:40 a.m.-1:05 p.m.

Nonstop5h 25m

C$ 204

New YorkToronto

LGA - YYZ

LGAYYZ

New York LaGuardia

Sat 19/7

9:55 a.m.-11:35 a.m.

Nonstop1h 40m

Toronto Pearson Intl

Sun 20/7

2:50 p.m.-4:30 p.m.

Nonstop1h 40m

C$ 229

New YorkToronto

LGA - YYZ

LGAYYZ

New York LaGuardia

Thu 29/5

9:55 a.m.-11:35 a.m.

Nonstop1h 40m

Toronto Pearson Intl

Thu 5/6

9:00 a.m.-2:45 p.m.

1 stop5h 45m

C$ 234

New YorkMontreal

LGA - YUL

LGAYUL

New York LaGuardia

Mon 5/5

7:05 a.m.-8:35 a.m.

Nonstop1h 30m

Montreal Pierre Elliott Trudeau Intl

Mon 5/5

11:15 a.m.-3:56 p.m.

1 stop4h 41m

C$ 248

New YorkToronto

JFK - YYZ

JFKYYZ

New York John F Kennedy Intl

Wed 14/5

3:40 p.m.-5:25 p.m.

Nonstop1h 45m

Toronto Pearson Intl

Wed 21/5

8:55 p.m.-10:45 p.m.

Nonstop1h 50m

C$ 252

New YorkToronto

LGA - YYZ

LGAYYZ

New York LaGuardia

Tue 17/6

10:25 a.m.-3:46 p.m.

1 stop5h 21m

Toronto Pearson Intl

Tue 17/6

7:25 p.m.-8:59 p.m.

Nonstop1h 34m

C$ 256

NewarkToronto

EWR - YTZ

EWRYTZ

Newark

Thu 15/5

10:00 a.m.-11:40 a.m.

Nonstop1h 40m

Toronto Island

Sun 18/5

12:00 p.m.-5:40 p.m.

1 stop5h 40m

C$ 257

Flights are sorted by cheapest round-trip flights first.

Deals found on 15/4

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$ 167). 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 15 April 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 15 April 2025.

The most flights from US0 to CAON are scheduled on a Monday (19 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (15 on average).

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Region of Ontario ranges from 51.0 - 83.0 mm per month. June is typically the wettest month, when rainfall can reach 83.0 mm. February is typically the driest time to visit Region of Ontario when rainfall is around 51.0 mm.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Region of Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -6.0 C).

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 15 April 2025.
Read through reviews of airlines operating flights from USA to Ontario, such as Delta, Alaska Airlines and Porter Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,918 reviews
Check prices

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,918 reviews
Delta
8.0
Very good
7,918 reviews
Check prices

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Alaska Airlines
8.0
Very good
9,871 reviews
Delta
8.0
Very good
7,918 reviews
Check prices

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Porter Airlines
8.0
Very good
281 reviews
Delta
8.0
Very good
7,918 reviews
Check prices

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,323 reviews
Delta
8.0
Very good
7,918 reviews
Check prices

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air Transat
7.8
Good
385 reviews
Delta
8.0
Very good
7,918 reviews
Check prices

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • 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$ 90 on Porter Airlines. Other airlines that offer cheap prices include Air Canada from C$ 100 and United Airlines from C$ 110 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$ 167). 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.
Pearson Intl to Vancouver Intl flights
Vancouver Intl to Pearson Intl flights
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Pierre Elliott Trudeau Intl to Vancouver Intl flights
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Newark to Toronto Island flights
Hamilton to Calgary flights
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Los Angeles to Vancouver Intl flights
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John F Kennedy Intl to Pearson Intl flights
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Region of Waterloo Intl to Abbotsford flights

Top 9 airlines flying from USA to Ontario

Discover the top 9 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 15 April 2025.
AirlineCheapestAverageFlexibilityOn-time
Flair AirlinesCheapestC$ 159AverageC$ 305FlexibilityNo cancel feeOn-timeN/A
Search Flair Airlines flights
Air CanadaCheapestC$ 165AverageC$ 656FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Air TransatCheapestC$ 177AverageC$ 480FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
American AirlinesCheapestC$ 178AverageC$ 494FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapestC$ 211AverageC$ 616FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 222AverageC$ 549FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Porter AirlinesCheapestC$ 236AverageC$ 480FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
DeltaCheapestC$ 252AverageC$ 425FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Alaska AirlinesCheapestC$ 394AverageC$ 669FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines 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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