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Cheap flights from the United States to Ontario from C$ 107

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 17/2. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YYZ
28 Feb — 7 Mar1
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 29 January 2026.

Sat 14/38:00 a.m.
EWR
-
YYZ
Nonstop1h 46m
Air Canada
Sat 21/310:00 a.m.
YYZ
-
EWR
1 stop4h 47m
Air Canada
Deal found 28/1C$ 239
Fri 13/36:55 a.m.
EWR
-
YYZ
1 stop4h 45m
Air Canada
Fri 20/36:45 a.m.
YYZ
-
EWR
Nonstop1h 42m
Air Canada
Deal found 27/1C$ 240
Fri 13/38:40 p.m.
DCA
-
YYZ
Nonstop1h 37m
Air Canada
Fri 20/37:20 a.m.
YYZ
-
DCA
Nonstop1h 35m
Air Canada
Deal found 26/1C$ 243
Fri 27/28:00 a.m.
EWR
-
YYZ
Nonstop1h 46m
Air Canada
Sun 1/39:00 a.m.
YYZ
-
EWR
1 stop5h 47m
Air Canada
Deal found 28/1C$ 246
Fri 13/39:05 a.m.
EWR
-
YYZ
Nonstop1h 46m
Air Canada
Mon 16/36:00 p.m.
YYZ
-
EWR
Nonstop1h 38m
Air Canada
Deal found 27/1C$ 247
Sun 15/38:30 p.m.
EWR
-
YYZ
Nonstop1h 40m
Air Canada
Sun 22/310:00 a.m.
YYZ
-
EWR
1 stop4h 52m
Air Canada
Deal found 28/1C$ 257
Thu 19/25:50 p.m.
LGA
-
YUL
1 stop6h 45m
Multiple Airlines
Mon 23/23:30 p.m.
YUL
-
LGA
Nonstop1h 29m
Multiple Airlines
Deal found 27/1C$ 259
Thu 5/39:05 a.m.
EWR
-
YYZ
Nonstop1h 46m
Air Canada
Sun 8/34:35 p.m.
YYZ
-
EWR
Nonstop1h 33m
Air Canada
Deal found 27/1C$ 261
Thu 26/26:00 a.m.
EWR
-
YYZ
1 stop6h 40m
Air Canada
Sun 1/39:10 p.m.
YYZ
-
EWR
Nonstop1h 38m
Air Canada
Deal found 27/1C$ 263
Thu 19/26:05 a.m.
LGA
-
YUL
Nonstop1h 27m
Air Canada
Mon 23/23:30 p.m.
YUL
-
LGA
Nonstop1h 29m
Air Canada
Deal found 27/1C$ 263
Thu 5/311:40 a.m.
EWR
-
YUL
1 stop4h 50m
Porter Airlines
Sun 8/39:50 a.m.
YUL
-
EWR
1 stop4h 10m
Porter Airlines
Deal found 28/1C$ 267
Mon 30/38:40 p.m.
DCA
-
YYZ
Nonstop1h 32m
Air Canada
Sat 4/47:20 a.m.
YYZ
-
DCA
Nonstop1h 33m
Air Canada
Deal found 28/1C$ 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 29 January 2026.

Round-trip from

C$ 239

One-way from

C$ 107

Popular in

November

Cheapest in

February

Average price

C$ 240

Good round-trip deal

C$ 95 or less

Good one-way deal

C$ 85 or less
Air Canada
  • Air Canada
  • 14/3-21/3
  • 1 total stop
  • 6h 33m total
  • USA to Ontario
Search Deals
Porter Airlines
  • Porter Airlines
  • 17/2
  • 1 total stop
  • 5h 30m total
  • USA to Ontario
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 61 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 January 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 29 January 2026.
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

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

Wed 18/2

9:40 a.m.-11:17 a.m.

Nonstop1h 37m

Toronto Pearson Intl

Mon 23/2

8:15 a.m.-12:19 p.m.

1 stop4h 04m

C$ 295

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

Sat 30/5

12:45 p.m.-5:10 p.m.

1 stop4h 25m

Toronto Pearson Intl

Sun 31/5

6:25 p.m.-7:58 p.m.

Nonstop1h 33m

C$ 295

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

Sun 1/3

8:40 p.m.-10:17 p.m.

Nonstop1h 37m

Toronto Pearson Intl

Wed 4/3

11:00 a.m.-3:31 p.m.

1 stop4h 31m

C$ 299

NewarkToronto

EWR - YTZ

EWRYTZ

Newark

Fri 8/5

10:45 a.m.-2:48 p.m.

1 stop4h 03m

Toronto Island

Mon 11/5

4:00 p.m.-8:35 p.m.

1 stop4h 35m

C$ 319

New YorkMontreal

LGA - YUL

LGAYUL

New York LaGuardia

Tue 7/4

9:15 p.m.-10:40 a.m.

1 stop13h 25m

Montreal Pierre Elliott Trudeau Intl

Wed 8/4

2:20 p.m.-11:30 p.m.

1 stop9h 10m

C$ 324

New YorkMontreal

LGA - YUL

LGAYUL

New York LaGuardia

Mon 13/4

9:15 p.m.-10:40 a.m.

1 stop13h 25m

Montreal Pierre Elliott Trudeau Intl

Tue 14/4

2:20 p.m.-11:30 p.m.

1 stop9h 10m

C$ 324

NewarkToronto

EWR - YTZ

EWRYTZ

Newark

Fri 27/2

3:45 p.m.-8:03 p.m.

1 stop4h 18m

Toronto Island

Mon 2/3

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

Nonstop1h 30m

C$ 329

New YorkToronto

LGA - YYZ

LGAYYZ

New York LaGuardia

Sat 28/3

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

Nonstop1h 40m

Toronto Pearson Intl

Wed 1/4

8:55 p.m.-10:31 p.m.

Nonstop1h 36m

C$ 331

New YorkMontreal

LGA - YUL

LGAYUL

New York LaGuardia

Wed 18/2

7:00 a.m.-8:37 a.m.

Nonstop1h 37m

Montreal Pierre Elliott Trudeau Intl

Tue 3/3

7:33 p.m.-9:20 p.m.

Nonstop1h 47m

C$ 331

New YorkMontreal

LGA - YUL

LGAYUL

New York LaGuardia

Fri 20/2

4:59 p.m.-6:35 p.m.

Nonstop1h 36m

Montreal Pierre Elliott Trudeau Intl

Tue 3/3

7:33 p.m.-9:20 p.m.

Nonstop1h 47m

C$ 331

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/1

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, March is the cheapest month in which you can book a flight from USA to Region of Ontario (average of C$ 72). 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 29 January 2026.

It’s typically best to fly out from USA to Region of Ontario in the evening. Doing so could potentially save you 28% 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 24 January 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 at noon 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 29 January 2026.

The most flights from US0 to CAON are scheduled on a Friday (19 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (4 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 29 January 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
7.9
Good
412 reviews
Check prices

Overall

7.9

Entertainment

6.9

Food

7.5

Crew

8.6

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Porter Airlines
7.9
Good
412 reviews
Porter Airlines
7.9
Good
412 reviews
Check prices

Overall

7.9

Entertainment

6.9

Food

7.5

Crew

8.6

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
United Airlines
7.4
Good
9,215 reviews
Porter Airlines
7.9
Good
412 reviews
Check prices

Overall

7.9

Entertainment

6.9

Food

7.5

Crew

8.6

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
WestJet
7.2
Good
3,253 reviews
Porter Airlines
7.9
Good
412 reviews
Check prices

Overall

7.9

Entertainment

6.9

Food

7.5

Crew

8.6

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Air Canada
7.1
Good
10,667 reviews
Porter Airlines
7.9
Good
412 reviews
Check prices

Overall

7.9

Entertainment

6.9

Food

7.5

Crew

8.6

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Flair Airlines
6.0
Okay
263 reviews
Porter Airlines
7.9
Good
412 reviews
Check prices

Overall

7.9

Entertainment

6.9

Food

7.5

Crew

8.6

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

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$ 295, Air Canada can have you in Region of Ontario from USA in 1h 37m. The distance between USA and Region of Ontario is about 578 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$ 30 on Flair Airlines. Other airlines that offer cheap prices include Porter Airlines from C$ 60 and WestJet from C$ 71 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, March is the cheapest month in which you can book a flight from USA to Region of Ontario (average of C$ 72). 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.
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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 29 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 136AverageC$ 532FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Porter AirlinesCheapestC$ 143AverageC$ 420FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Flair AirlinesCheapestC$ 158AverageC$ 250FlexibilityNo cancel feeOn-timeN/A
Search Flair Airlines flights
United AirlinesCheapestC$ 159AverageC$ 497FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapestC$ 159AverageC$ 346FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air TransatCheapestC$ 173AverageC$ 736FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
American AirlinesCheapestC$ 174AverageC$ 365FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
WestJetCheapestC$ 184AverageC$ 458FlexibilityNo cancel feeOn-time60%
Search WestJet 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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