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Cheap flights from the United States to Ontario from C$ 120

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 18/8. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YYZ
29 May — 5 Jun1
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 April 2026.

Mon 15/66:59 a.m.
DCA
-
YYZ
Nonstop1h 32m
Air Canada
Thu 25/67:20 a.m.
YYZ
-
DCA
Nonstop1h 32m
Air Canada
Deal found 26/4C$ 269
Sat 30/56:59 a.m.
DCA
-
YYZ
Nonstop1h 32m
Air Canada
Mon 1/68:55 p.m.
YYZ
-
DCA
Nonstop1h 33m
Air Canada
Deal found 24/4C$ 270
Thu 14/56:00 a.m.
DCA
-
YYZ
1 stop4h 38m
Air Canada
Sun 17/58:10 a.m.
YYZ
-
DCA
1 stop3h 51m
Air Canada
Deal found 25/4C$ 272
Wed 3/66:00 a.m.
DCA
-
YYZ
1 stop4h 38m
Air Canada
Fri 5/68:55 p.m.
YYZ
-
DCA
Nonstop1h 33m
Air Canada
Deal found 28/4C$ 275
Sun 24/56:00 a.m.
DCA
-
YYZ
1 stop4h 38m
Air Canada
Wed 27/57:00 a.m.
YYZ
-
DCA
1 stop5h 01m
Air Canada
Deal found 25/4C$ 276
Thu 28/56:00 a.m.
EWR
-
YUL
Nonstop1h 37m
Air Canada
Mon 1/66:15 p.m.
YUL
-
EWR
Nonstop1h 37m
Air Canada
Deal found 27/4C$ 283
Sat 6/66:55 p.m.
DCA
-
YYZ
Nonstop1h 32m
Air Canada
Thu 11/68:55 p.m.
YYZ
-
DCA
Nonstop1h 33m
Air Canada
Deal found 25/4C$ 283
Tue 23/66:59 a.m.
DCA
-
YYZ
Nonstop1h 36m
Air Canada
Thu 25/68:55 p.m.
YYZ
-
DCA
Nonstop1h 36m
Air Canada
Deal found 29/4C$ 285
Fri 15/56:00 a.m.
EWR
-
YUL
Nonstop1h 37m
Air Canada
Mon 18/58:10 a.m.
YUL
-
EWR
Nonstop1h 37m
Air Canada
Deal found 24/4C$ 287
Sat 13/66:55 p.m.
DCA
-
YYZ
Nonstop1h 32m
Air Canada
Sat 20/67:20 a.m.
YYZ
-
DCA
Nonstop1h 32m
Air Canada
Deal found 29/4C$ 287
Mon 1/66:25 a.m.
EWR
-
YTZ
Nonstop1h 35m
Porter Airlines
Mon 1/611:55 a.m.
YTZ
-
EWR
1 stop4h 00m
Porter Airlines
Deal found 27/4C$ 288
Tue 19/56:25 a.m.
EWR
-
YTZ
Nonstop1h 35m
Porter Airlines
Tue 19/511:55 a.m.
YTZ
-
EWR
1 stop3h 58m
Porter Airlines
Deal found 27/4C$ 290

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 April 2026.

Round-trip from

C$ 269

One-way from

C$ 120

Popular in

February

Cheapest in

October

Average price

C$ 303

Good round-trip deal

C$ 138 or less

Good one-way deal

C$ 126 or less
Air Canada
  • Air Canada
  • 15/6-25/6
  • 2 total stops
  • 11h 28m total
  • USA to Ontario
Search Deals
Air Canada
  • Air Canada
  • 18/8
  • Nonstop
  • 1h 38m total
  • USA to Ontario
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 79 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (C$ 31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 April 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

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

Fri 29/5

9:39 a.m.-5:21 p.m.

1 stop7h 42m

Toronto Pearson Intl

Mon 1/6

2:20 p.m.-10:59 p.m.

1 stop8h 39m

C$ 355

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

Mon 25/5

6:20 a.m.-1:40 p.m.

1 stop7h 20m

Toronto Pearson Intl

Mon 1/6

7:55 a.m.-4:20 p.m.

1 stop8h 25m

C$ 355

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Wed 27/5

6:00 a.m.-1:30 p.m.

1 stop7h 30m

Toronto Pearson Intl

Fri 29/5

9:49 a.m.-4:31 p.m.

1 stop6h 42m

C$ 355

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

Sun 21/6

6:00 a.m.-1:34 p.m.

1 stop7h 34m

Toronto Pearson Intl

Tue 23/6

2:29 p.m.-10:59 p.m.

1 stop8h 30m

C$ 356

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

Tue 26/5

7:40 p.m.-11:41 p.m.

1 stop4h 01m

Toronto Pearson Intl

Tue 2/6

2:20 p.m.-6:59 p.m.

1 stop4h 39m

C$ 356

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

Thu 28/5

6:20 a.m.-1:40 p.m.

1 stop7h 20m

Toronto Pearson Intl

Sun 31/5

2:30 p.m.-10:54 p.m.

1 stop8h 24m

C$ 363

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Sat 13/6

6:05 a.m.-1:34 p.m.

1 stop7h 29m

Toronto Pearson Intl

Sun 14/6

2:29 p.m.-11:14 p.m.

1 stop8h 45m

C$ 363

New YorkToronto

LGA - YYZ

LGAYYZ

New York LaGuardia

Fri 15/5

4:09 p.m.-5:59 p.m.

Nonstop1h 50m

Toronto Pearson Intl

Tue 19/5

2:30 p.m.-4:14 p.m.

Nonstop1h 44m

C$ 365

New YorkToronto

LGA - YYZ

LGAYYZ

New York LaGuardia

Mon 18/5

7:30 a.m.-9:10 a.m.

Nonstop1h 40m

Toronto Pearson Intl

Mon 25/5

7:55 a.m.-9:40 a.m.

Nonstop1h 45m

C$ 365

New YorkToronto

LGA - YYZ

LGAYYZ

New York LaGuardia

Thu 14/5

9:56 p.m.-11:41 p.m.

Nonstop1h 45m

Toronto Pearson Intl

Mon 18/5

6:49 p.m.-8:34 p.m.

Nonstop1h 45m

C$ 365

Flights are sorted by cheapest round-trip flights first.

Deals found on 24/4

Showing 1-10 of 60 resultsSorted by cheapest first
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2
3
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6

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

How far ahead should I book a flight from USA to Region of Ontario?

Booking 64 days in advance of your planned departure date is, on average, the best time to get cheap flights from USA to Region of Ontario. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, May is the cheapest month in which you can book a flight from USA to Region of Ontario (average of C$ 445). Flying from USA to Region of Ontario in March is currently the most expensive (average of C$ 535). 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 April 2026.

It’s typically best to fly out from USA to Region of Ontario in the evening. Doing so could potentially save you 24% 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 25 April 2026.

Travelers seeking maximum savings on their USA to Region of Ontario flight should consider departing on Monday at noon 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.

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 April 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
435 reviews
Check prices

Boarding

8.2

Entertainment

7.0

Overall

8.0

Food

7.6

Comfort

8.0

Crew

8.6

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
435 reviews
Porter Airlines
8.0
Very good
435 reviews
Check prices

Boarding

8.2

Entertainment

7.0

Overall

8.0

Food

7.6

Comfort

8.0

Crew

8.6

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
9,680 reviews
Porter Airlines
8.0
Very good
435 reviews
Check prices

Boarding

8.2

Entertainment

7.0

Overall

8.0

Food

7.6

Comfort

8.0

Crew

8.6

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
3,328 reviews
Porter Airlines
8.0
Very good
435 reviews
Check prices

Boarding

8.2

Entertainment

7.0

Overall

8.0

Food

7.6

Comfort

8.0

Crew

8.6

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
10,979 reviews
Porter Airlines
8.0
Very good
435 reviews
Check prices

Boarding

8.2

Entertainment

7.0

Overall

8.0

Food

7.6

Comfort

8.0

Crew

8.6

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
268 reviews
Porter Airlines
8.0
Very good
435 reviews
Check prices

Boarding

8.2

Entertainment

7.0

Overall

8.0

Food

7.6

Comfort

8.0

Crew

8.6

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$ 392, Delta can have you in Region of Ontario from USA in 1h 48m. The distance between USA and Region of Ontario is about 531 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$ 36 on Flair Airlines. Other airlines that offer cheap prices include WestJet from C$ 74 and Porter Airlines from C$ 74 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, May is the cheapest month in which you can book a flight from USA to Region of Ontario (average of C$ 445). Flying from USA to Region of Ontario in March is currently the most expensive (average of C$ 535). 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 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 29 April 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 139AverageC$ 496FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Flair AirlinesCheapestC$ 164AverageC$ 268FlexibilityNo cancel feeOn-timeN/A
Search Flair Airlines flights
DeltaCheapestC$ 173AverageC$ 359FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapestC$ 175AverageC$ 535FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air CanadaCheapestC$ 187AverageC$ 565FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Porter AirlinesCheapestC$ 194AverageC$ 458FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
United AirlinesCheapestC$ 223AverageC$ 633FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air TransatCheapestC$ 297AverageC$ 740FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
Alaska AirlinesCheapestC$ 302AverageC$ 763FlexibilityNo 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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