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Cheap flights from the United States to Ontario from C$ 100

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 26/7. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YYZ
11 Apr — 18 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from USA to Ontario

Enter your travel dates to find the best prices.

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 12 March 2026.

Thu 2/46:30 a.m.
LGA
-
YYZ
2 stops6h 35m
Air Canada
Mon 6/45:25 p.m.
YYZ
-
LGA
Nonstop1h 36m
Air Canada
Deal found 9/3C$ 234
Sat 11/76:50 a.m.
LGA
-
YUL
1 stop5h 02m
Air Canada
Sat 11/73:30 p.m.
YUL
-
LGA
Nonstop1h 27m
Air Canada
Deal found 8/3C$ 251
Fri 19/66:00 a.m.
EWR
-
YUL
Nonstop1h 38m
Air Canada
Tue 23/66:20 p.m.
YUL
-
EWR
Nonstop1h 38m
Air Canada
Deal found 10/3C$ 255
Thu 2/46:30 a.m.
LGA
-
YUL
Nonstop1h 30m
Air Canada
Thu 2/410:30 a.m.
YUL
-
LGA
1 stop5h 11m
Air Canada
Deal found 7/3C$ 255
Sat 11/48:55 a.m.
LGA
-
YUL
Nonstop1h 30m
Air Canada
Sat 11/41:00 p.m.
YUL
-
LGA
1 stop6h 31m
Air Canada
Deal found 9/3C$ 258
Fri 3/45:55 p.m.
LGA
-
YYZ
Nonstop1h 40m
Porter Airlines
Fri 10/43:20 p.m.
YYZ
-
LGA
Nonstop1h 35m
Porter Airlines
Deal found 8/3C$ 259
Thu 9/49:55 a.m.
LGA
-
YYZ
Nonstop1h 40m
Porter Airlines
Sun 12/47:20 a.m.
YYZ
-
LGA
Nonstop1h 35m
Porter Airlines
Deal found 8/3C$ 262
Thu 23/49:55 a.m.
LGA
-
YYZ
Nonstop1h 40m
Multiple Airlines
Thu 30/46:15 a.m.
YYZ
-
LGA
Nonstop1h 36m
Multiple Airlines
Deal found 8/3C$ 265
Fri 24/47:55 a.m.
LGA
-
YUL
1 stop4h 05m
Air Canada
Fri 1/57:30 a.m.
YUL
-
LGA
1 stop4h 51m
Air Canada
Deal found 10/3C$ 265
Fri 3/49:55 a.m.
LGA
-
YYZ
Nonstop1h 40m
Porter Airlines
Tue 7/47:20 a.m.
YYZ
-
LGA
Nonstop1h 35m
Porter Airlines
Deal found 8/3C$ 266
Thu 9/49:00 a.m.
JFK
-
YUL
Nonstop1h 36m
Air Canada
Mon 13/47:45 p.m.
YUL
-
JFK
Nonstop1h 47m
Air Canada
Deal found 10/3C$ 266
Wed 1/49:55 a.m.
LGA
-
YYZ
Nonstop1h 40m
Porter Airlines
Sun 5/47:20 a.m.
YYZ
-
LGA
Nonstop1h 35m
Porter Airlines
Deal found 9/3C$ 267

Find flight deals from USA to Ontario

Keep the following information in mind while searching for USA to Ontario flight deals. Data was last updated 12 March 2026.

Round-trip from

C$ 234

One-way from

C$ 100

Popular in

February

Cheapest in

April

Average price

C$ 312

Good round-trip deal

C$ 117 or less

Good one-way deal

C$ 105 or less
Air Canada
  • Air Canada
  • 2/4-6/4
  • 2 total stops
  • 8h 11m total
  • USA to Ontario
Search Deals
Air Canada
  • Air Canada
  • 26/7
  • Nonstop
  • 1h 38m total
  • USA to Ontario
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (C$ 97 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (C$ 33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
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

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 12 March 2026.
Use the filters below to find and compare flights from the United States to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

New YorkToronto

LGA - YYZ

LGAYYZ

New York LaGuardia

Sun 29/3

7:44 a.m.-9:28 a.m.

Nonstop1h 44m

Toronto Pearson Intl

Tue 31/3

2:26 p.m.-4:04 p.m.

Nonstop1h 38m

C$ 319

New YorkToronto

LGA - YYZ

LGAYYZ

New York LaGuardia

Thu 16/4

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

Nonstop1h 40m

Toronto Pearson Intl

Mon 20/4

7:20 a.m.-8:55 a.m.

Nonstop1h 35m

C$ 319

New YorkToronto

LGA - YYZ

LGAYYZ

New York LaGuardia

Sun 5/4

7:44 a.m.-9:28 a.m.

Nonstop1h 44m

Toronto Pearson Intl

Mon 13/4

5:06 p.m.-6:50 p.m.

Nonstop1h 44m

C$ 319

New YorkToronto

JFK - YYZ

JFKYYZ

New York John F Kennedy Intl

Thu 16/4

3:32 p.m.-5:39 p.m.

Nonstop2h 07m

Toronto Pearson Intl

Mon 20/4

6:29 p.m.-8:30 p.m.

Nonstop2h 01m

C$ 319

New YorkToronto

JFK - YYZ

JFKYYZ

New York John F Kennedy Intl

Thu 7/5

3:45 p.m.-5:47 p.m.

Nonstop2h 02m

Toronto Pearson Intl

Sat 9/5

6:00 a.m.-7:59 a.m.

Nonstop1h 59m

C$ 319

New YorkToronto

JFK - YYZ

JFKYYZ

New York John F Kennedy Intl

Sun 19/4

7:08 a.m.-1:24 p.m.

1 stop6h 16m

Toronto Pearson Intl

Tue 21/4

12:09 p.m.-1:59 p.m.

Nonstop1h 50m

C$ 333
Quickest round-trip

NewarkToronto

EWR - YTZ

EWRYTZ

Newark

Fri 10/4

11:40 a.m.-1:20 p.m.

Nonstop1h 40m

Toronto Island

Mon 13/4

3:00 p.m.-4:30 p.m.

Nonstop1h 30m

C$ 334

New YorkMontreal

LGA - YUL

LGAYUL

New York LaGuardia

Mon 8/6

7:05 a.m.-8:43 a.m.

Nonstop1h 38m

Montreal Pierre Elliott Trudeau Intl

Tue 16/6

7:45 p.m.-9:23 p.m.

Nonstop1h 38m

C$ 344

New YorkMontreal

LGA - YUL

LGAYUL

New York LaGuardia

Sun 9/8

7:05 a.m.-8:43 a.m.

Nonstop1h 38m

Montreal Pierre Elliott Trudeau Intl

Wed 12/8

7:45 p.m.-9:23 p.m.

Nonstop1h 38m

C$ 344

New YorkMontreal

LGA - YUL

LGAYUL

New York LaGuardia

Sun 2/8

7:05 a.m.-8:43 a.m.

Nonstop1h 38m

Montreal Pierre Elliott Trudeau Intl

Thu 6/8

2:30 p.m.-4:06 p.m.

Nonstop1h 36m

C$ 344

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/3

Showing 1-10 of 60 resultsSorted by cheapest first
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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, November is the cheapest month in which you can book a flight from USA to Region of Ontario (average of C$ 92). Flying from USA to Region of Ontario in August is currently the most expensive (average of C$ 152). 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 12 March 2026.

It’s typically best to fly out from USA to Region of Ontario in the evening. Doing so could potentially save you 30% on the flight price compared to flying at noon, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly round-trip from USA to Ontario. Price data was last updated on 21 February 2026.

Travelers seeking maximum savings on their USA to Region of Ontario flight should consider departing on Monday evenings when fares are most often at their lowest. Wednesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 12 March 2026.

The most flights from US0 to CAON are scheduled on a Monday (19 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (12 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 12 March 2026.
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
8.0
Very good
423 reviews
Check prices

Boarding

8.2

Comfort

8.0

Entertainment

7.0

Overall

8.0

Crew

8.6

Food

7.6

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
Porter Airlines
8.0
Very good
423 reviews
Porter Airlines
8.0
Very good
423 reviews
Check prices

Boarding

8.2

Comfort

8.0

Entertainment

7.0

Overall

8.0

Crew

8.6

Food

7.6

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
United Airlines
7.4
Good
9,418 reviews
Porter Airlines
8.0
Very good
423 reviews
Check prices

Boarding

8.2

Comfort

8.0

Entertainment

7.0

Overall

8.0

Crew

8.6

Food

7.6

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
WestJet
7.2
Good
3,291 reviews
Porter Airlines
8.0
Very good
423 reviews
Check prices

Boarding

8.2

Comfort

8.0

Entertainment

7.0

Overall

8.0

Crew

8.6

Food

7.6

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
Air Canada
7.1
Good
10,800 reviews
Porter Airlines
8.0
Very good
423 reviews
Check prices

Boarding

8.2

Comfort

8.0

Entertainment

7.0

Overall

8.0

Crew

8.6

Food

7.6

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
Flair Airlines
6.0
Okay
265 reviews
Porter Airlines
8.0
Very good
423 reviews
Check prices

Boarding

8.2

Comfort

8.0

Entertainment

7.0

Overall

8.0

Crew

8.6

Food

7.6

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.

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$ 319, Delta can have you in Region of Ontario from USA in 1h 40m. The distance between USA and Region of Ontario is about 573 km. All flights are typically direct.

  • 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$ 30 on Flair Airlines. Other airlines that offer cheap prices include Porter Airlines from C$ 62 and WestJet from C$ 72 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, November is the cheapest month in which you can book a flight from USA to Region of Ontario (average of C$ 92). Flying from USA to Region of Ontario in August is currently the most expensive (average of C$ 152). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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
Hamilton to Vancouver Intl flights
Pearson Intl to Abbotsford flights
Pierre Elliott Trudeau Intl to Vancouver Intl flights
Vancouver Intl to Hamilton flights
Pearson Intl to Calgary flights
Toronto Island to Vancouver Intl flights
Vancouver Intl to Pierre Elliott Trudeau Intl flights
Vancouver Intl to Calgary flights
Edmonton to Vancouver Intl flights
Vancouver Intl to Toronto Island flights
Abbotsford to Pearson Intl flights
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Calgary to Vancouver Intl flights
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Hamilton to Calgary flights
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Toronto Island to Calgary flights
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John F Kennedy Intl to Vancouver Intl flights
Region of Waterloo Intl to Calgary flights
Toronto Island to Halifax flights
John F Kennedy Intl to Pierre Elliott Trudeau Intl flights
LaGuardia to Pearson Intl flights
Calgary to Abbotsford flights
Pearson Intl to Halifax flights
Pearson Intl to Edmonton flights
San Francisco to Vancouver Intl flights
LaGuardia to Pierre Elliott Trudeau Intl flights
Halifax to Toronto Island flights
Region of Waterloo Intl to Vancouver Intl flights
Victoria to Pearson Intl flights
Edmonton to Pearson Intl flights
Hamilton to Edmonton flights
Pearson Intl to St. John's flights
Winnipeg to Vancouver Intl flights
Calgary to Pearson Intl flights
Pearson Intl to Pierre Elliott Trudeau Intl flights
Abbotsford to Calgary flights
Edmonton to Abbotsford flights
Ottawa to Calgary flights
John F Kennedy Intl to Pearson Intl flights
Pierre Elliott Trudeau Intl to Abbotsford flights
Edmonton to Hamilton flights

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 12 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 136AverageC$ 522FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
WestJetCheapestC$ 139AverageC$ 453FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Porter AirlinesCheapestC$ 143AverageC$ 394FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Flair AirlinesCheapestC$ 151AverageC$ 251FlexibilityNo cancel feeOn-timeN/A
Search Flair Airlines flights
United AirlinesCheapestC$ 159AverageC$ 489FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air TransatCheapestC$ 173AverageC$ 736FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
American AirlinesCheapestC$ 174AverageC$ 534FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
DeltaCheapestC$ 270AverageC$ 335FlexibilityNo cancel feeOn-timeN/A
Search Delta 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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