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Cheap flights from the United States to Ontario from C$ 151

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United States to Ontario departing on 20/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from the United States to Ontario

Recent round-trip flight deals from the United States to Ontario

Enter your travel dates to find the best prices.
Porter Airlines Logo
9:55 a.m. - 11:35 a.m.
LGA
-
YYZ
1h 40mdirect
Porter Airlines Logo
7:20 a.m. - 8:55 a.m.
YYZ
-
LGA
1h 35mdirect
C$ 318Porter Airlines
Fri, 11 Sep - Mon, 14 Sep
Porter Airlines Logo
9:55 a.m. - 11:35 a.m.
LGA
-
YYZ
1h 40mdirect
Porter Airlines Logo
7:20 a.m. - 8:55 a.m.
YYZ
-
LGA
1h 35mdirect
C$ 320Porter Airlines
Wed, 9 Sep - Sat, 19 Sep
Multiple Airlines Logo
6:00 a.m. - 7:38 a.m.
EWR
-
YUL
1h 38mdirect
Multiple Airlines Logo
8:00 p.m. - 9:40 p.m.
YUL
-
EWR
1h 40mdirect
C$ 321Multiple Airlines
Thu, 9 Jul - Mon, 13 Jul
Air Canada Logo
1:00 p.m. - 2:41 p.m.
LGA
-
YTZ
1h 41mdirect
Air Canada Logo
8:20 a.m. - 4:41 p.m.
YTZ
-
LGA
8h 21m
2 stops
C$ 324Air Canada
Wed, 23 Sep - Fri, 25 Sep
Air Canada Logo
7:55 a.m. - 9:36 a.m.
LGA
-
YTZ
1h 41mdirect
Air Canada Logo
6:50 p.m. - 8:17 p.m.
YTZ
-
LGA
1h 27mdirect
C$ 326Air Canada
Wed, 23 Sep - Fri, 25 Sep
Delta Logo
8:55 p.m. - 10:51 p.m.
JFK
-
YYZ
1h 56mdirect
Delta Logo
6:00 a.m. - 8:06 a.m.
YYZ
-
JFK
2h 06mdirect
C$ 392Delta
Wed, 7 Oct - Sat, 10 Oct
Delta Logo
9:29 a.m. - 11:25 a.m.
JFK
-
YYZ
1h 56mdirect
Delta Logo
6:25 p.m. - 8:30 p.m.
YYZ
-
JFK
2h 05mdirect
C$ 401Delta
Thu, 3 Sep - Tue, 8 Sep
WestJet Logo
6:00 a.m. - 7:55 p.m.
SFO
-
YYZ
10h 55m
2 stops
WestJet Logo
10:50 a.m. - 4:40 p.m.
YYZ
-
SFO
8h 50m
1 stop
C$ 433WestJet
Thu, 20 Aug - Tue, 25 Aug
WestJet Logo
6:00 a.m. - 7:55 p.m.
SFO
-
YYZ
10h 55m
2 stops
WestJet Logo
3:50 p.m. - 9:55 p.m.
YYZ
-
SFO
9h 05m
1 stop
C$ 434WestJet
Tue, 7 Jul - Tue, 21 Jul
Multiple Airlines Logo
7:00 a.m. - 10:43 p.m.
LAX
-
YYZ
12h 43m
2 stops
Multiple Airlines Logo
9:55 a.m. - 12:34 p.m.
YYZ
-
LAX
5h 39mdirect
C$ 446Multiple Airlines
Sat, 7 Nov - Fri, 13 Nov

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Delta flights from United States to Region of Ontario

Our best Delta deals on United States to Region of Ontario flight tickets
Delta
11 Sep
JFK9:14 p.m.New York John F Kennedy Intl
1h 58m
YYZ11:12 p.m.Toronto Pearson Intl
16 Sep
YYZ6:10 a.m.Toronto Pearson Intl
1h 55m
JFK8:05 a.m.New York John F Kennedy Intl
C$ 392
Delta
3 Sep
JFK9:29 a.m.New York John F Kennedy Intl
1h 56m
YYZ11:25 a.m.Toronto Pearson Intl
8 Sep
YYZ6:25 p.m.Toronto Pearson Intl
2h 05m
JFK8:30 p.m.New York John F Kennedy Intl
C$ 401
Delta
10 Sep
JFK7:15 a.m.New York John F Kennedy Intl
4h 03m
1 stop
YYZ11:18 a.m.Toronto Pearson Intl
14 Sep
YYZ6:25 p.m.Toronto Pearson Intl
2h 05m
JFK8:30 p.m.New York John F Kennedy Intl
C$ 406

American Airlines flights from United States to Region of Ontario

Our best American Airlines deals on United States to Region of Ontario flight tickets
American Airlines
5 Jul
JFK6:30 a.m.New York John F Kennedy Intl
10h 15m
1 stop
YYZ4:45 p.m.Toronto Pearson Intl
8 Jul
YYZ11:00 a.m.Toronto Pearson Intl
10h 30m
1 stop
JFK9:30 p.m.New York John F Kennedy Intl
C$ 443
American Airlines
8 Jul
JFK6:30 a.m.New York John F Kennedy Intl
5h 29m
1 stop
YYZ11:59 a.m.Toronto Pearson Intl
11 Jul
YYZ5:25 p.m.Toronto Pearson Intl
4h 05m
1 stop
JFK9:30 p.m.New York John F Kennedy Intl
C$ 457
American Airlines
8 Jul
JFK6:30 a.m.New York John F Kennedy Intl
5h 29m
1 stop
YYZ11:59 a.m.Toronto Pearson Intl
22 Jul
YYZ5:25 p.m.Toronto Pearson Intl
14h 32m
1 stop
JFK7:57 a.m.New York John F Kennedy Intl
C$ 459

momondo Fare Finder

 
Customize your flight search to find flights from United States to Region of 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, momondo users made 96,600 searches. Data last updated 22 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

New YorkToronto

LGA - YYZ

LGAYYZ

New York LaGuardia

Fri 11/9

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

Nonstop1h 40m

Toronto Pearson Intl

Mon 14/9

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

Nonstop1h 35m

C$ 318

New YorkToronto

LGA - YYZ

LGAYYZ

New York LaGuardia

Wed 9/9

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

Nonstop1h 40m

Toronto Pearson Intl

Sat 19/9

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

Nonstop1h 35m

C$ 320

NewarkMontreal

EWR - YUL

EWRYUL

Newark

Thu 9/7

6:00 a.m.-7:38 a.m.

Nonstop1h 38m

Montreal Pierre Elliott Trudeau Intl

Mon 13/7

8:00 p.m.-9:40 p.m.

Nonstop1h 40m

C$ 321

New YorkToronto

LGA - YTZ

LGAYTZ

New York LaGuardia

Wed 23/9

1:00 p.m.-2:41 p.m.

Nonstop1h 41m

Toronto Island

Fri 25/9

8:20 a.m.-4:41 p.m.

2 stops8h 21m

C$ 324
Quickest round-trip

New YorkToronto

LGA - YTZ

LGAYTZ

New York LaGuardia

Wed 23/9

7:55 a.m.-9:36 a.m.

Nonstop1h 41m

Toronto Island

Fri 25/9

6:50 p.m.-8:17 p.m.

Nonstop1h 27m

C$ 326

New YorkToronto

JFK - YYZ

JFKYYZ

New York John F Kennedy Intl

Wed 7/10

8:55 p.m.-10:51 p.m.

Nonstop1h 56m

Toronto Pearson Intl

Sat 10/10

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

Nonstop2h 06m

C$ 392

New YorkToronto

JFK - YYZ

JFKYYZ

New York John F Kennedy Intl

Thu 3/9

9:29 a.m.-11:25 a.m.

Nonstop1h 56m

Toronto Pearson Intl

Tue 8/9

6:25 p.m.-8:30 p.m.

Nonstop2h 05m

C$ 401

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Thu 20/8

6:00 a.m.-7:55 p.m.

2 stops10h 55m

Toronto Pearson Intl

Tue 25/8

10:50 a.m.-4:40 p.m.

1 stop8h 50m

C$ 433

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Tue 7/7

6:00 a.m.-7:55 p.m.

2 stops10h 55m

Toronto Pearson Intl

Tue 21/7

3:50 p.m.-9:55 p.m.

1 stop9h 05m

C$ 434

Los AngelesToronto

LAX - YYZ

LAXYYZ

Los Angeles

Sat 7/11

7:00 a.m.-10:43 p.m.

2 stops12h 43m

Toronto Pearson Intl

Fri 13/11

9:55 a.m.-12:34 p.m.

Nonstop5h 39m

C$ 446

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Ontario from

How to get the cheapest flight ticket from United States to Region of Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Region of Ontario?

In general, January is the cheapest month to fly from United States to Region of Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 476. If you are unable to visit Region of Ontario during the month of January, then departing from United States during the month September is also very affordable. Most momondo users find prices during this month for around C$ 484.

What is the cheapest day to depart on your flight to Region of Ontario?

The cheapest day to depart from United States to Region of Ontario is on a Saturday. Travellers who choose to depart for Region of Ontario on a Saturday will often find tickets for as low as C$ 434. The most expensive day to fly to Region of Ontario is Sunday, with ticket prices averaging around C$ 668.

What is the cheapest time of day to depart on your flight to Region of Ontario?

Our most recent data shows that the best time of day to fly to Region of Ontario is in the evening. Flights from United States to Region of Ontario during this time can be as low as C$ 280. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are C$ 644 on average. Flights to Region of Ontario from United States in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest United States to Ontario flight route?

Fly from Boston Logan Intl to Toronto Island for the best United States - Ontario flight prices

How far in advance should I book a flight from the United States to Ontario?

You are more likely to see cheaper flights to Region of Ontario from United States when booking weeks ahead of your departure date. In general, you can expect to find flights to Region of Ontario for around C$ 344 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Region of Ontario from United States for as low as C$ 273 on momondo.

What cabin class options are available on United States to Region of Ontario flights?

There are 4 cabin classes available to choose from on United States to Region of Ontario flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on United States to Region of Ontario flights?

You could potentially save up to 19% on your flight if you consider stops on a United States to Region of Ontario flight.

Cheap United States to Region of Ontario flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United States to Region of Ontario

Best price found

C$ 109

Fastest flight time

1h 05m

Direct flights

Every day

Airports in Region of Ontario

125 airports
The best one-way flight to Region of Ontario from United States in the past 72 hours is C$ 109. The best round-trip flight deal from United States to Region of Ontario found on momondo in the last 72 hours is C$ 119.
The fastest flight from United States to Region of Ontario takes 1h 05m
Direct flights go from United States to Region of Ontario every day.
There are 125 airports in Region of Ontario. From United States there are direct flights to Montreal Pierre Elliott Trudeau Intl (YUL), Toronto Pearson Intl (YYZ).
Search flight deals

Frequently asked questions about flying from the United States to Ontario

  • When did momondo last update prices for flights from United States to Ontario?

    Prices for flights from United States to Ontario are updated daily.

  • How many operators does momondo search for flights from United States to Ontario?

  • How old do you have to be to fly from United States to Ontario?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from United States to Ontario.

  • What documentation or ID do you need to fly to Ontario?

    The required travel and health documents for your Ontario trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from United States to Region of Ontario?

Best airlines flying from United States to Region of Ontario

Compare and see reviews for airlines that fly from United States to Region of Ontario with momondo
Airline
Rating
Free Cancellation
Price
WestJetPriceFrom C$ 144Free CancellationRating
7.2
3,379 reviews
Search WestJet flights
DeltaPriceFrom C$ 179Free CancellationRating
7.8
8,422 reviews
Search Delta flights
American AirlinesPriceFrom C$ 182Free CancellationRating
7.1
11,739 reviews
Search American Airlines flights
Porter AirlinesPriceFrom C$ 188Free CancellationRating
8.0
439 reviews
Search Porter Airlines flights
Flair AirlinesPriceFrom C$ 202Free CancellationRating
6.0
269 reviews
Search Flair Airlines flights
Air CanadaPriceFrom C$ 223Free CancellationRating
7.1
11,242 reviews
Search Air Canada flights
United AirlinesPriceFrom C$ 231Free CancellationRating
7.4
9,874 reviews
Search United Airlines flights
Air TransatPriceFrom C$ 308Free CancellationRating
7.8
558 reviews
Search Air Transat flights
Alaska AirlinesPriceFrom C$ 313Free CancellationRating
7.9
12,563 reviews
Search Alaska Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from United States to Ontario?

It is quick and easy to find United States to Ontario flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Ontario that suits you.

Can I find flights from United States to Ontario with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Ontario from United States with this policy.

How can momondo help me find flights from United States to Ontario?

Once you have performed a search for United States to Ontario flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from United States to Ontario right now. Can momondo alert me if prices change?

Price alerts on flights to Ontario from United States are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Region of Ontario trip

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Find better results for your trip to Ontario

Popular Cities in Ontario

Popular flights according to clicks in the last 7 days on momondo
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Flights to Reginafrom C$ 255
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