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Cheap flights from the United States to Ontario from C$ 126

LAX — YYZ
14 Oct — 21 Oct1
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

Sun 15/119:55 a.m. -
Nonstop1h 27m
Mon 16/114:00 p.m. -
1 stop4h 23m
Deal found 12/9C$ 270
Mon 9/114:30 p.m. -
Nonstop1h 27m
Wed 9/122:15 p.m. -
Nonstop1h 30m
Deal found 9/9C$ 272
Mon 19/109:55 a.m. -
Nonstop1h 25m
Fri 23/101:55 p.m. -
Nonstop1h 30m
Deal found 11/9C$ 273
Wed 28/109:55 a.m. -
1 stop4h 50m
Wed 4/112:15 p.m. -
Nonstop1h 30m
Deal found 13/9C$ 275
Sat 24/109:55 a.m. -
Nonstop1h 25m
Tue 27/102:15 p.m. -
Nonstop1h 30m
Deal found 9/9C$ 277
Wed 28/109:55 a.m. -
1 stop4h 50m
Fri 30/106:40 p.m. -
Nonstop1h 30m
Deal found 9/9C$ 284
Sat 14/119:55 a.m. -
1 stop4h 50m
Sat 14/116:40 p.m. -
Nonstop1h 30m
Deal found 12/9C$ 288
Sat 3/1010:35 a.m. -
Nonstop1h 30m
Sat 3/103:25 p.m. -
Nonstop1h 26m
Deal found 11/9C$ 293
Wed 23/94:00 p.m. -
Nonstop1h 25m
Thu 24/910:30 a.m. -
1 stop4h 30m
Deal found 10/9C$ 295
Tue 27/109:40 a.m. -
Nonstop1h 42m
Tue 27/103:55 p.m. -
Nonstop1h 40m
Deal found 12/9C$ 301
Sat 24/109:45 a.m. -
1 stop6h 08m
Sat 31/104:00 p.m. -
1 stop4h 23m
Deal found 9/9C$ 302
Sat 24/1010:35 a.m. -
Nonstop1h 30m
Sun 25/108:25 a.m. -
Nonstop1h 31m
Deal found 10/9C$ 302

Find flight deals from USA to Ontario

Round-trip from

C$ 270

One-way from

C$ 126

Popular in

February

Cheapest in

October

Average price

C$ 384

Good round-trip deal

C$ 115 or less

Good one-way deal

C$ 117 or less
Air Canada
  • Air Canada
  • 15/11-16/11
  • 1 total stop
  • 5h 50m total
  • USA to Ontario
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Air Canada
  • Air Canada
  • 13/10-31/12
  • Nonstop
  • 1h 25m total
  • USA to Ontario
Search Deals
High demand for flights, 0% potential price rise
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Cheapest flight prices on average. 4% potential price decrease (C$ 24 potential savings vs. average RT price).
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Average for round-trip flights in September 2026
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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.
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Cheapflights Fare Finder

 
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

IAD Washington, D.C. Dulles Intl - YYZ Toronto Pearson Intl

IADYYZ

Washington, D.C. Dulles Intl

Tue 24/11

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

1 stop7h 30m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 133

Washington, D.C.Toronto

IAD Washington, D.C. Dulles Intl - YYZ Toronto Pearson Intl

IADYYZ

Washington, D.C. Dulles Intl

Fri 11/12

6:00 a.m.-1:35 p.m.

1 stop7h 35m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 133

Washington, D.C.Toronto

IAD Washington, D.C. Dulles Intl - YYZ Toronto Pearson Intl

IADYYZ

Washington, D.C. Dulles Intl

Thu 24/9

6:10 a.m.-1:34 p.m.

1 stop7h 24m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 140

Washington, D.C.Toronto

IAD Washington, D.C. Dulles Intl - YYZ Toronto Pearson Intl

IADYYZ

Washington, D.C. Dulles Intl

Thu 1/10

11:10 a.m.-5:20 p.m.

1 stop6h 10m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 140

Washington, D.C.Toronto

IAD Washington, D.C. Dulles Intl - YYZ Toronto Pearson Intl

IADYYZ

Washington, D.C. Dulles Intl

Thu 22/10

6:05 a.m.-1:36 p.m.

1 stop7h 31m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 140

Washington, D.C.Toronto

IAD Washington, D.C. Dulles Intl - YYZ Toronto Pearson Intl

IADYYZ

Washington, D.C. Dulles Intl

Sat 10/10

5:08 p.m.-10:56 p.m.

1 stop5h 48m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 140

Washington, D.C.Toronto

IAD Washington, D.C. Dulles Intl - YYZ Toronto Pearson Intl

IADYYZ

Washington, D.C. Dulles Intl

Tue 6/10

10:57 a.m.-5:19 p.m.

1 stop6h 22m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 140

Washington, D.C.Toronto

IAD Washington, D.C. Dulles Intl - YYZ Toronto Pearson Intl

IADYYZ

Washington, D.C. Dulles Intl

Fri 13/11

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

1 stop7h 30m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 155

NewarkMontreal

EWR Newark - YUL Montreal Pierre Elliott Trudeau Intl

EWRYUL

Newark

Sat 10/10

1:30 p.m.-6:12 p.m.

1 stop4h 42m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 169

NewarkMontreal

EWR Newark - YUL Montreal Pierre Elliott Trudeau Intl

EWRYUL

Newark

Mon 14/12

9:40 a.m.-4:00 p.m.

1 stop6h 20m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 171

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

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

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$ 465). Flying from USA to Region of Ontario in July is currently the most expensive (average of C$ 558). 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?

It’s typically best to fly out from USA to Region of Ontario in the morning. Doing so could potentially save you 16% on the flight price compared to flying at noon, which is usually more expensive.

Weekly flight availability from USA to Region of Ontario

The most flights from US0 to CAON are scheduled on a Friday (26 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (12 on average).

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

Booking 30 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 day to fly from USA to Region of Ontario?

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

Reviews of airlines servicing Ontario

See what other customers who have flown with Porter Airlines,Delta, andUnited Airlines 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
460 reviews
Check prices

Crew

8.6

Comfort

8.0

Boarding

8.2

Overall

8.0

Food

7.6

Entertainment

6.9

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
Porter Airlines
8.0
Very good
460 reviews
Porter Airlines
8.0
Very good
460 reviews
Check prices

Crew

8.6

Comfort

8.0

Boarding

8.2

Overall

8.0

Food

7.6

Entertainment

6.9

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
Delta
7.8
Good
8,564 reviews
Porter Airlines
8.0
Very good
460 reviews
Check prices

Crew

8.6

Comfort

8.0

Boarding

8.2

Overall

8.0

Food

7.6

Entertainment

6.9

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
United Airlines
7.4
Good
10,214 reviews
Porter Airlines
8.0
Very good
460 reviews
Check prices

Crew

8.6

Comfort

8.0

Boarding

8.2

Overall

8.0

Food

7.6

Entertainment

6.9

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
WestJet
7.2
Good
3,444 reviews
Porter Airlines
8.0
Very good
460 reviews
Check prices

Crew

8.6

Comfort

8.0

Boarding

8.2

Overall

8.0

Food

7.6

Entertainment

6.9

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
Air Canada
7.1
Good
11,621 reviews
Porter Airlines
8.0
Very good
460 reviews
Check prices

Crew

8.6

Comfort

8.0

Boarding

8.2

Overall

8.0

Food

7.6

Entertainment

6.9

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats

Related info for your journey

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

    For as low as C$ 440, Delta can have you in Region of Ontario from USA in 1h 44m. The distance between USA and Region of Ontario is about 557 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$ 39 on Flair Airlines. Other airlines that offer cheap prices include WestJet from C$ 73 and Porter Airlines from C$ 76 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$ 465). Flying from USA to Region of Ontario in July is currently the most expensive (average of C$ 558). 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

Top 8 airlines flying from USA to Ontario

AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 141AverageC$ 624FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 171AverageC$ 653FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Flair AirlinesCheapestC$ 172AverageC$ 276FlexibilityNo cancel feeOn-timeN/A
Search Flair Airlines flights
DeltaCheapestC$ 176AverageC$ 440FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Porter AirlinesCheapestC$ 207AverageC$ 522FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
United AirlinesCheapestC$ 226AverageC$ 901FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapestC$ 261AverageC$ 645FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air TransatCheapestC$ 278AverageC$ 832FlexibilityNo cancel feeOn-time50%
Search Air Transat flights

Fly with Cheapflights

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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