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Cheap flights from the United States to Ontario from C$ 148

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 21/7. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YYZ
15 Jul — 22 Jul1
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 15 June 2026.

Wed 29/76:30 a.m.
LGA
-
YUL
Nonstop1h 30m
GOL
Wed 5/86:35 a.m.
YUL
-
LGA
Nonstop1h 25m
GOL
Deal found 14/6C$ 299
Mon 26/109:40 a.m.
LGA
-
YYZ
Nonstop1h 42m
Porter Airlines
Sun 1/113:55 p.m.
YYZ
-
LGA
Nonstop1h 40m
Porter Airlines
Deal found 14/6C$ 316
Wed 16/95:55 p.m.
LGA
-
YYZ
Nonstop1h 40m
Porter Airlines
Wed 23/95:50 p.m.
YYZ
-
LGA
Nonstop1h 35m
Porter Airlines
Deal found 12/6C$ 317
Tue 22/99:55 a.m.
LGA
-
YYZ
Nonstop1h 40m
Porter Airlines
Sun 27/95:50 p.m.
YYZ
-
LGA
Nonstop1h 35m
Porter Airlines
Deal found 14/6C$ 319
Tue 28/75:35 p.m.
EWR
-
YUL
Nonstop1h 43m
Multiple Airlines
Tue 4/81:10 p.m.
YUL
-
EWR
Nonstop1h 45m
Multiple Airlines
Deal found 13/6C$ 319
Thu 10/99:55 a.m.
LGA
-
YYZ
Nonstop1h 40m
Porter Airlines
Sun 13/95:50 p.m.
YYZ
-
LGA
Nonstop1h 35m
Porter Airlines
Deal found 10/6C$ 320
Thu 9/712:25 p.m.
EWR
-
YUL
Nonstop1h 43m
Porter Airlines
Mon 13/73:15 p.m.
YUL
-
EWR
Nonstop1h 40m
Porter Airlines
Deal found 12/6C$ 320
Sat 26/95:55 p.m.
LGA
-
YYZ
Nonstop1h 40m
Porter Airlines
Tue 29/93:20 p.m.
YYZ
-
LGA
Nonstop1h 35m
Porter Airlines
Deal found 10/6C$ 322
Tue 7/75:35 p.m.
EWR
-
YUL
Nonstop1h 43m
Porter Airlines
Sat 11/73:15 p.m.
YUL
-
EWR
Nonstop1h 40m
Porter Airlines
Deal found 11/6C$ 322
Thu 17/98:25 p.m.
LGA
-
YYZ
Nonstop1h 40m
Porter Airlines
Sat 19/93:20 p.m.
YYZ
-
LGA
Nonstop1h 35m
Porter Airlines
Deal found 13/6C$ 323
Mon 13/712:25 p.m.
EWR
-
YUL
Nonstop1h 43m
Porter Airlines
Thu 23/73:15 p.m.
YUL
-
EWR
Nonstop1h 40m
Porter Airlines
Deal found 14/6C$ 323
Fri 4/98:25 p.m.
LGA
-
YYZ
Nonstop1h 40m
Porter Airlines
Sun 6/97:20 a.m.
YYZ
-
LGA
Nonstop1h 35m
Porter Airlines
Deal found 11/6C$ 324

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 15 June 2026.

Round-trip from

C$ 299

One-way from

C$ 148

Popular in

February

Cheapest in

October

Average price

C$ 387

Good round-trip deal

C$ 116 or less

Good one-way deal

C$ 120 or less
GOL
  • GOL
  • 29/7-5/8
  • Nonstop
  • 2h 55m total
  • USA to Ontario
Search Deals
Porter Airlines
  • Porter Airlines
  • 21/7
  • Nonstop
  • 1h 40m total
  • USA to Ontario
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 43 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (C$ 28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 15 June 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

NewarkMontreal

EWR - YUL

EWRYUL

Newark

Sun 19/7

2:30 p.m.-4:10 p.m.

Nonstop1h 40m

Montreal Pierre Elliott Trudeau Intl

Sun 2/8

6:00 a.m.-7:36 a.m.

Nonstop1h 36m

C$ 386

NewarkMontreal

EWR - YUL

EWRYUL

Newark

Thu 9/7

2:30 p.m.-4:10 p.m.

Nonstop1h 40m

Montreal Pierre Elliott Trudeau Intl

Sat 18/7

6:00 a.m.-7:36 a.m.

Nonstop1h 36m

C$ 386

NewarkMontreal

EWR - YUL

EWRYUL

Newark

Sun 5/7

8:18 p.m.-10:06 p.m.

Nonstop1h 48m

Montreal Pierre Elliott Trudeau Intl

Sun 2/8

6:00 a.m.-7:36 a.m.

Nonstop1h 36m

C$ 386

NewarkMontreal

EWR - YUL

EWRYUL

Newark

Sun 12/7

11:30 a.m.-1:09 p.m.

Nonstop1h 39m

Montreal Pierre Elliott Trudeau Intl

Wed 15/7

11:23 a.m.-12:59 p.m.

Nonstop1h 36m

C$ 386

New YorkToronto

JFK - YYZ

JFKYYZ

New York John F Kennedy Intl

Wed 21/10

3:30 p.m.-5:26 p.m.

Nonstop1h 56m

Toronto Pearson Intl

Fri 20/11

6:10 p.m.-8:12 p.m.

Nonstop2h 02m

C$ 387

New YorkToronto

JFK - YYZ

JFKYYZ

New York John F Kennedy Intl

Thu 5/11

11:20 a.m.-1:09 p.m.

Nonstop1h 49m

Toronto Pearson Intl

Sun 8/11

6:00 a.m.-8:06 a.m.

Nonstop2h 06m

C$ 387

NewarkMontreal

EWR - YUL

EWRYUL

Newark

Sat 4/7

7:15 a.m.-5:30 p.m.

1 stop10h 15m

Montreal Pierre Elliott Trudeau Intl

Sat 11/7

6:00 a.m.-7:36 a.m.

Nonstop1h 36m

C$ 400

New YorkToronto

LGA - YYZ

LGAYYZ

New York LaGuardia

Thu 27/8

7:15 p.m.-9:19 p.m.

Nonstop2h 04m

Toronto Pearson Intl

Tue 1/9

6:59 p.m.-8:49 p.m.

Nonstop1h 50m

C$ 403

New YorkToronto

LGA - YYZ

LGAYYZ

New York LaGuardia

Wed 16/9

6:00 a.m.-10:04 a.m.

1 stop4h 04m

Toronto Pearson Intl

Wed 23/9

9:00 a.m.-2:36 p.m.

1 stop5h 36m

C$ 414

New YorkToronto

LGA - YYZ

LGAYYZ

New York LaGuardia

Wed 8/7

10:29 a.m.-2:19 p.m.

1 stop3h 50m

Toronto Pearson Intl

Sun 12/7

6:00 a.m.-7:35 a.m.

Nonstop1h 35m

C$ 417

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/6

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, January is the cheapest month in which you can book a flight from USA to Region of Ontario (average of C$ 473). Flying from USA to Region of Ontario in May is currently the most expensive (average of C$ 554). 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 June 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.

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?

Use this chart to determine the cheapest time to fly round-trip from USA to Ontario. Price data was last updated on 13 June 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 15 June 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
438 reviews
Check prices

Boarding

8.2

Entertainment

6.9

Crew

8.6

Comfort

8.0

Food

7.6

Overall

8.0

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
Porter Airlines
8.0
Very good
438 reviews
Porter Airlines
8.0
Very good
438 reviews
Check prices

Boarding

8.2

Entertainment

6.9

Crew

8.6

Comfort

8.0

Food

7.6

Overall

8.0

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
United Airlines
7.4
Good
9,828 reviews
Porter Airlines
8.0
Very good
438 reviews
Check prices

Boarding

8.2

Entertainment

6.9

Crew

8.6

Comfort

8.0

Food

7.6

Overall

8.0

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
WestJet
7.2
Good
3,361 reviews
Porter Airlines
8.0
Very good
438 reviews
Check prices

Boarding

8.2

Entertainment

6.9

Crew

8.6

Comfort

8.0

Food

7.6

Overall

8.0

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
Air Canada
7.1
Good
11,193 reviews
Porter Airlines
8.0
Very good
438 reviews
Check prices

Boarding

8.2

Entertainment

6.9

Crew

8.6

Comfort

8.0

Food

7.6

Overall

8.0

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
Flair Airlines
6.0
Okay
269 reviews
Porter Airlines
8.0
Very good
438 reviews
Check prices

Boarding

8.2

Entertainment

6.9

Crew

8.6

Comfort

8.0

Food

7.6

Overall

8.0

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.

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$ 386, United Airlines can have you in Region of Ontario from USA in 1h 40m. 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$ 37 on Flair Airlines. Other airlines that offer cheap prices include WestJet from C$ 74 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$ 473). Flying from USA to Region of Ontario in May is currently the most expensive (average of C$ 554). 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.
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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 15 June 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 143AverageC$ 518FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Flair AirlinesCheapestC$ 167AverageC$ 275FlexibilityNo cancel feeOn-timeN/A
Search Flair Airlines flights
DeltaCheapestC$ 177AverageC$ 395FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapestC$ 180AverageC$ 539FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Porter AirlinesCheapestC$ 186AverageC$ 466FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 196AverageC$ 608FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 228AverageC$ 710FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Alaska AirlinesCheapestC$ 309AverageC$ 794FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
Air TransatCheapestC$ 383AverageC$ 759FlexibilityNo cancel feeOn-time50%
Search Air Transat 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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