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

Departing from Region of Ontario to USA will take you 5h 06m. There are 539 km between Region of Ontario and USA. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

What are the cheapest airlines to fly from Region of Ontario to USA one-way?

The cheapest airline one-way is Air Transat, with whom users have recently found tickets for as low as C$ 43. However, be on the lookout for offers from WestJet and United Airlines, as they are both options that can get you from Region of Ontario to USA for a low price.

In terms of precipitation, rainfall in USA ranges from 61.0 - 221.0 mm per month. June is typically the wettest month, when rainfall can reach 221.0 mm. November is typically the driest time to visit USA when rainfall is around 61.0 mm.

If weather is an important factor for your trip to USA, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 29.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 16.0 C).

Can I find deals for flights from Ontario to USA that include hotel bookings?

Yes. In addition to deals on Ontario to USA flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Ontario to USA?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to USA.

Can I find deals for business class flights from Ontario to USA?

Yes. Cheapflights offers flight deals from Ontario to USA by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

C$ 161+ Cheap Flights from Ontario to the United States

Cheap flight deals from Ontario to USA

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from Ontario to USA
Explore the most affordable flight options available from Ontario to USA. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 October 2026.

Mon 16/117:35 a.m. -

Nonstop3h 20m

Wed 16/128:35 p.m. -

Nonstop3h 20m

Deal found 18/10C$ 209

Mon 7/127:35 a.m. -

Nonstop3h 20m

Wed 16/128:35 p.m. -

Nonstop3h 20m

Deal found 17/10C$ 214

Mon 7/129:35 a.m. -

Nonstop3h 20m

Wed 16/128:35 p.m. -

Nonstop3h 20m

Deal found 17/10C$ 219

Sun 1/117:35 a.m. -

Nonstop3h 20m

Thu 5/1112:00 p.m. -

Nonstop3h 20m

Deal found 17/10C$ 223

Mon 23/117:35 a.m. -

Nonstop3h 20m

Wed 16/128:35 p.m. -

Nonstop3h 20m

Deal found 15/10C$ 226

Fri 30/104:20 p.m. -

Nonstop3h 20m

Sat 7/118:05 p.m. -

Nonstop3h 15m

Deal found 15/10C$ 227

Sun 1/117:35 a.m. -

Nonstop3h 20m

Sat 7/1112:00 p.m. -

Nonstop3h 20m

Deal found 18/10C$ 233

Mon 23/112:25 p.m. -

Nonstop3h 01m

Thu 24/124:20 p.m. -

Nonstop2h 57m

Deal found 15/10C$ 248

Sat 21/112:25 p.m. -

Nonstop3h 01m

Fri 27/118:50 p.m. -

Nonstop2h 57m

Deal found 19/10C$ 279

Tue 17/1112:20 p.m. -

Nonstop3h 01m

Fri 27/118:50 p.m. -

Nonstop2h 57m

Deal found 15/10C$ 281

Tue 15/1212:20 p.m. -

Nonstop3h 01m

Mon 22/210:50 a.m. -

Nonstop3h 00m

Deal found 15/10C$ 286

Wed 2/121:40 p.m. -

Nonstop3h 01m

Wed 9/122:40 p.m. -

Nonstop2h 57m

Deal found 19/10C$ 288

Best flights from Ontario to USA
Discover carefully curated flight deals from Ontario to USA that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 20 October 2026.

Wed 6/16:15 a.m. -

1 stop7h 53m

Sat 27/28:20 a.m. -

1 stop7h 44m

Deal found 16/10C$ 334

Tue 10/117:00 a.m. -

1 stop5h 06m

Fri 13/1112:50 p.m. -

1 stop5h 38m

Deal found 18/10C$ 341

Sun 22/1110:53 a.m. -

1 stop7h 26m

Wed 25/116:00 a.m. -

Nonstop1h 42m

Deal found 19/10C$ 355

Sun 22/117:35 a.m. -

Nonstop1h 25m

Thu 26/118:00 a.m. -

Nonstop1h 39m

Deal found 16/10C$ 388

Wed 16/1210:53 a.m. -

1 stop9h 16m

Thu 31/127:45 a.m. -

1 stop5h 58m

Deal found 15/10C$ 398

Thu 5/115:15 p.m. -

1 stop9h 29m

Mon 16/114:45 p.m. -

2 stops20h 20m

Deal found 15/10C$ 636

Thu 5/117:55 a.m. -

Nonstop1h 45m

Sun 8/119:55 p.m. -

Nonstop1h 41m

Deal found 15/10C$ 336

Thu 12/117:35 a.m. -

Nonstop1h 25m

Sat 14/112:15 p.m. -

Nonstop1h 39m

Deal found 18/10C$ 351

Tue 17/1110:53 a.m. -

1 stop13h 06m

Fri 4/129:30 p.m. -

Nonstop3h 05m

Deal found 14/10C$ 374

Mon 23/117:35 a.m. -

Nonstop1h 25m

Tue 1/128:00 a.m. -

Nonstop1h 39m

Deal found 16/10C$ 388

Tue 3/116:15 a.m. -

1 stop6h 07m

Fri 6/116:00 a.m. -

1 stop5h 19m

Deal found 16/10C$ 354

Mon 16/117:00 a.m. -

1 stop5h 06m

Thu 19/116:40 p.m. -

Nonstop1h 39m

Deal found 17/10C$ 362

Fri 4/123:35 p.m. -

1 stop5h 54m

Sun 6/128:21 a.m. -

1 stop5h 42m

Deal found 16/10C$ 415

Thu 26/1110:00 a.m. -

1 stop4h 15m

Sun 29/116:00 a.m. -

Nonstop1h 42m

Deal found 19/10C$ 381

Wed 4/117:55 a.m. -

1 stop10h 40m

Tue 17/114:35 p.m. -

1 stop7h 22m

Deal found 15/10C$ 358

Mon 16/117:00 a.m. -

1 stop5h 06m

Tue 17/1111:55 a.m. -

Nonstop1h 39m

Deal found 17/10C$ 362

Thu 5/115:55 p.m. -

1 stop5h 34m

Mon 9/117:37 p.m. -

1 stop4h 15m

Deal found 15/10C$ 415

Fri 6/115:55 p.m. -

1 stop5h 34m

Tue 10/114:30 p.m. -

Nonstop1h 42m

Deal found 16/10C$ 393

Thu 19/116:15 a.m. -

1 stop7h 00m

Tue 24/116:00 a.m. -

1 stop7h 30m

Deal found 15/10C$ 362

Sat 12/129:00 a.m. -

2 stops7h 55m

Tue 15/1212:50 p.m. -

1 stop5h 39m

Deal found 18/10C$ 365

Sat 12/127:00 a.m. -

Nonstop1h 42m

Fri 18/125:55 p.m. -

Nonstop1h 44m

Deal found 16/10C$ 448

Sat 9/19:44 a.m. -

1 stop12h 13m

Sun 17/17:00 a.m. -

2 stops11h 45m

Deal found 16/10C$ 417

Wed 2/126:45 a.m. -

1 stop11h 01m

Mon 7/1210:05 p.m. -

Nonstop2h 47m

Deal found 19/10C$ 405

Tue 12/12:10 p.m. -

1 stop7h 01m

Tue 19/15:35 a.m. -

1 stop5h 34m

Deal found 16/10C$ 375

Wed 24/36:10 a.m. -

1 stop9h 38m

Fri 2/49:40 a.m. -

1 stop12h 38m

Deal found 19/10C$ 419

Sat 21/114:30 p.m. -

Nonstop1h 26m

Thu 26/1112:50 p.m. -

1 stop5h 38m

Deal found 16/10C$ 389

Sun 1/119:50 a.m. -

Nonstop1h 25m

Sat 7/119:40 a.m. -

Nonstop1h 39m

Deal found 19/10C$ 485

Sat 7/112:30 p.m. -

Nonstop1h 46m

Mon 9/119:55 p.m. -

Nonstop1h 46m

Deal found 17/10C$ 377

Fri 27/112:45 p.m. -

1 stop8h 49m

Sun 29/116:00 a.m. -

1 stop4h 46m

Deal found 19/10C$ 422

Fri 6/119:44 a.m. -

1 stop13h 54m

Sun 8/117:00 a.m. -

1 stop7h 17m

Deal found 17/10C$ 437

Find flight deals from Ontario to USA

Round-trip from	C$ 209
One-way from	C$ 161
Popular in	July
Cheapest in	January
Average price	C$ 395
Good round-trip deal	C$ 218 or less
Good one-way deal	C$ 144 or less

Flair Airlines
16/11-16/12
Nonstop
6h 40m total
Ontario to USA

Search Deals

Flair Airlines
16/11-31/12
Nonstop
3h 20m total
Ontario to USA

Search Deals

Highest demand for flights based on searches. 10% potential increase in price (C$ 68 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease (C$ 11 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

Price to beat on a round-trip flight from Ontario to USA.

Search Deals

Price to beat on a one-way flight from Ontario to USA.

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TorontoFort Lauderdale

YYZ Toronto Pearson Intl - FLL Fort Lauderdale

YYZFLL

Toronto Pearson Intl

Sun 10/1

7:59 a.m.-5:14 p.m.

1 stop9h 15m

Fort Lauderdale

Wed 31/12

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

Nonstop0h 00m

C$ 202

TorontoTampa

YYZ Toronto Pearson Intl - TPA Tampa

YYZTPA

Toronto Pearson Intl

Thu 14/1

9:45 a.m.-4:41 p.m.

1 stop6h 56m

Tampa

Wed 31/12

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

Nonstop0h 00m

C$ 209

TorontoTampa

YYZ Toronto Pearson Intl - TPA Tampa

YYZTPA

Toronto Pearson Intl

Sat 9/1

12:25 p.m.-6:11 p.m.

1 stop5h 46m

Tampa

Wed 31/12

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

Nonstop0h 00m

C$ 209

TorontoFort Lauderdale

YYZ Toronto Pearson Intl - FLL Fort Lauderdale

YYZFLL

Toronto Pearson Intl

Wed 18/11

6:00 a.m.-1:02 p.m.

1 stop7h 02m

Fort Lauderdale

Wed 31/12

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

Nonstop0h 00m

C$ 213

TorontoFort Lauderdale

YYZ Toronto Pearson Intl - FLL Fort Lauderdale

YYZFLL

Toronto Pearson Intl

Tue 15/12

6:00 a.m.-3:45 p.m.

1 stop9h 45m

Fort Lauderdale

Wed 31/12

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

Nonstop0h 00m

C$ 219

TorontoFort Lauderdale

YYZ Toronto Pearson Intl - FLL Fort Lauderdale

YYZFLL

Toronto Pearson Intl

Wed 9/12

2:35 p.m.-9:06 p.m.

1 stop6h 31m

Fort Lauderdale

Wed 31/12

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

Nonstop0h 00m

C$ 219

TorontoFort Lauderdale

YYZ Toronto Pearson Intl - FLL Fort Lauderdale

YYZFLL

Toronto Pearson Intl

Sat 7/11

6:33 p.m.-12:49 a.m.

1 stop6h 16m

Fort Lauderdale

Wed 31/12

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

Nonstop0h 00m

C$ 219

TorontoFort Lauderdale

YYZ Toronto Pearson Intl - FLL Fort Lauderdale

YYZFLL

Toronto Pearson Intl

Tue 1/12

12:20 p.m.-6:30 p.m.

1 stop6h 10m

Fort Lauderdale

Wed 31/12

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

Nonstop0h 00m

C$ 219

TorontoTampa

YYZ Toronto Pearson Intl - TPA Tampa

YYZTPA

Toronto Pearson Intl

Fri 6/11

3:35 p.m.-11:59 p.m.

1 stop8h 24m

Tampa

Wed 31/12

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

Nonstop0h 00m

C$ 220

TorontoTampa

YYZ Toronto Pearson Intl - TPA Tampa

YYZTPA

Toronto Pearson Intl

Fri 11/12

3:45 p.m.-8:33 p.m.

1 stop4h 48m

Tampa

Wed 31/12

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

Nonstop0h 00m

C$ 230

Flights are sorted by cheapest round-trip flights first.

Deals found on 15/10

Showing 1-10 of 60 resultsSorted by cheapest first

...

Best time to book a flight from Ontario to USA

Have a flexible travel schedule? Discover the best time to fly to USA from Ontario with our price prediction graph.

YYZ-FLL

YYZ-TPA

YYZ-MCO

YTZ-EWR

YYZ-LGA

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 Ontario to the United States

CAON-US0

YYZ-FLL

YYZ-TPA

YYZ-MCO

YTZ-EWR

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

Currently, January is the cheapest month in which you can book a flight from Region of Ontario to USA (average of C$ 423). Flying from Region of Ontario to USA in December is currently the most expensive (average of C$ 547). 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 ON to US?

Unlike in the afternoon, when flights are generally more expensive, you can save up to 27% on flights from Region of Ontario to USA by exploring options for tickets in the morning.

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

To ensure you get the cheapest price possible for a flight from Region of Ontario to USA, you should look to book at least 54 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest day to fly from Region of Ontario to USA?

Travelers seeking maximum savings on their Region of Ontario to USA flight should consider departing on Sunday mornings 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.

Related info for your journey

How long is the flight from Region of Ontario to USA?
Departing from Region of Ontario to USA will take you 5h 06m. There are 539 km between Region of Ontario and USA. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the cheapest airlines to fly from Region of Ontario to USA one-way?
The cheapest airline one-way is Air Transat, with whom users have recently found tickets for as low as C$ 43. However, be on the lookout for offers from WestJet and United Airlines, as they are both options that can get you from Region of Ontario to USA for a low price.
Can I find deals for flights from Ontario to USA that include hotel bookings?
Yes. In addition to deals on Ontario to USA flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ontario to USA?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to USA.
Can I find deals for business class flights from Ontario to USA?
Yes. Cheapflights offers flight deals from Ontario to USA 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 Region of Ontario to USA?
Currently, January is the cheapest month in which you can book a flight from Region of Ontario to USA (average of C$ 423). Flying from Region of Ontario to USA in December is currently the most expensive (average of C$ 547). 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

Alternative routes

Complete your trip

Direct flights to

Flights by cabin class

Other flight options

Popular flights

Return Flight Options

Top destinations

Top regions

Alternative routes for Ontario to USA

Toronto Island to Cancún flights

Calgary to Cancún flights

Pearson Intl to Cancún flights

Hamilton to Cancún flights

Calgary to Cozumel flights

Pearson Intl to Cozumel flights

Hamilton to Vancouver Intl flights

Pearson Intl to Vancouver Intl flights

Pierre Elliott Trudeau Intl to Cancún flights

Vancouver Intl to Hamilton flights

Vancouver Intl to Pearson Intl flights

Toronto Island to Newark flights

Toronto Island to Vancouver Intl flights

Pearson Intl to Newark flights

Pearson Intl to Calgary flights

Pearson Intl to Benito Juarez flights

Pierre Elliott Trudeau Intl to Fort Lauderdale flights

Pearson Intl to John F Kennedy Intl flights

Vancouver Intl to Calgary flights

Vancouver Intl to Edmonton flights

Vancouver Intl to Toronto Island flights

Calgary to Vancouver Intl flights

Pearson Intl to Fort Lauderdale flights

Pierre Elliott Trudeau Intl to Newark flights

Vancouver Intl to Benito Juarez flights

Edmonton to Vancouver Intl flights

Pierre Elliott Trudeau Intl to Benito Juarez flights

Pearson Intl to LaGuardia flights

Pierre Elliott Trudeau Intl to LaGuardia flights

Vancouver Intl to Cancún flights

Calgary to Pearson Intl flights

Hamilton to Calgary flights

Hamilton to Halifax flights

Vancouver Intl to Las Vegas flights

Pearson Intl to Pierre Elliott Trudeau Intl flights

Vancouver Intl to Los Angeles flights

Toronto Island to Pierre Elliott Trudeau Intl flights

Pierre Elliott Trudeau Intl to Miami flights

Pearson Intl to Miami flights

Vancouver Intl to Honolulu flights

Pearson Intl to Orlando flights

Halifax to Hamilton flights

Toronto Island to LaGuardia flights

Calgary to Abbotsford flights

Edmonton to Cancún flights

Québec City to Cancún flights

Abbotsford to Calgary flights

Pearson Intl to Edmonton flights

Pierre Elliott Trudeau Intl to Pearson Intl flights

Toronto Island to Calgary flights

Top 10 airlines flying from Ontario to USA

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	CheapestC$ 121	AverageC$ 657	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Flair Airlines	CheapestC$ 179	AverageC$ 358	FlexibilityNo cancel fee	On-timeN/A	Search Flair Airlines flights
WestJet	CheapestC$ 203	AverageC$ 533	FlexibilityNo cancel fee	On-time60%	Search WestJet flights
Delta	CheapestC$ 215	AverageC$ 568	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
Porter Airlines	CheapestC$ 227	AverageC$ 531	FlexibilityNo cancel fee	On-time52%	Search Porter Airlines flights
American Airlines	CheapestC$ 235	AverageC$ 596	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
United Airlines	CheapestC$ 250	AverageC$ 664	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Air Transat	CheapestC$ 286	AverageC$ 536	FlexibilityNo cancel fee	On-time50%	Search Air Transat flights
Qatar Airways	CheapestC$ 754	AverageC$ 805	FlexibilityNo cancel fee	On-time68%	Search Qatar Airways flights
Qantas Airways	CheapestC$ 756	AverageC$ 822	FlexibilityNo cancel fee	On-time74%	Search Qantas Airways flights

Fly with Cheapflights

How does Cheapflights help users find flights from Ontario to USA?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to USA from Ontario today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Ontario to USA?

Cheapflights simply makes it quick and affordable to book flights from Ontario to USA by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Ontario to USA with no change fees?

Yes! Cheapflights helps users easily find flights from Ontario to USA with no change fees.

Can Cheapflights notify me if prices for flights from Ontario to USA become cheaper?

Not ready to book yet? You can track prices for flights from Ontario to USA on Cheapflights with our Price Alert feature and get notified when better prices are available.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from Ontario to the United States from C$ 161

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 16/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Ontario to USA

Cheapest flights from Ontario to USAExplore the most affordable flight options available from Ontario to USA. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 October 2026.

Explore the most affordable flight options available from Ontario to USA. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 October 2026.

Best flights from Ontario to USADiscover carefully curated flight deals from Ontario to USA that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 20 October 2026.

Discover carefully curated flight deals from Ontario to USA that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 20 October 2026.

Direct flights from Ontario to USAExplore direct flight options from Ontario to USA based on user searches, and compare prices and availability for your desired travel dates. Data last updated 20 October 2026.

Explore direct flight options from Ontario to USA based on user searches, and compare prices and availability for your desired travel dates. Data last updated 20 October 2026.

Last-minute flights from Ontario to USADiscover last-minute flight deals from Ontario to USA. Data last updated 20 October 2026 and is based on user searches.

Discover last-minute flight deals from Ontario to USA. Data last updated 20 October 2026 and is based on user searches.

One-way flights from Ontario to USASearch for one-way flight options from Ontario to USA. Find affordable one-way fares based on user searches. Data last updated 20 October 2026.

Search for one-way flight options from Ontario to USA. Find affordable one-way fares based on user searches. Data last updated 20 October 2026.

Find flight deals from Ontario to USA

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to the United States that are best for you.

Best time to book a flight from Ontario to USA

Have a flexible travel schedule? Discover the best time to fly to USA from Ontario with our price prediction graph.

Cheapflights Insights

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

What is the cheapest time of day to fly from ON to US?

Find hourly flight availability from Ontario to USA. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 20 October 2026.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 27% on flights from Region of Ontario to USA by exploring options for tickets in the morning.

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

To ensure you get the cheapest price possible for a flight from Region of Ontario to USA, you should look to book at least 54 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest day to fly from Region of Ontario to USA?

Use this chart to determine the cheapest time to fly round-trip from Ontario to USA. Price data was last updated on 17 October 2026.

Travelers seeking maximum savings on their Region of Ontario to USA flight should consider departing on Sunday mornings 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.

Related info for your journey

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

What are the cheapest airlines to fly from Region of Ontario to USA one-way?

Can I find deals for flights from Ontario to USA that include hotel bookings?

How can I find direct flights from Ontario to USA?

Can I find deals for business class flights from Ontario to USA?

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

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 Ontario to USA

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to USA by adding a car rental and/or hotel reservation to your travel itinerary.

Direct flights to

Book a non-stop flight to one of these other cities located in .

Search flights from Ontario to USA by cabin class

Find flights from Ontario to USA, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Ontario and USA flights

Browse other Ontario and USA flight options. Last updated on 20 October 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Find a return flight route from USA

Find the right flight back to Ontario after your stay in USA

Ontario to USA flights

Consider these flights travelling from Ontario to USA.

Fly to USA regions

Consider these flights travelling to USA regions.

Top 10 airlines flying from Ontario to USA

Fly with Cheapflights

How does Cheapflights help users find flights from Ontario to USA?

Why should you use Cheapflights to find cheap flight tickets from Ontario to USA?

Can Cheapflights find flights from Ontario to USA with no change fees?

Can Cheapflights notify me if prices for flights from Ontario to USA become cheaper?

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Ontario to USA
Explore the most affordable flight options available from Ontario to USA. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 October 2026.

Best flights from Ontario to USA
Discover carefully curated flight deals from Ontario to USA that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 20 October 2026.

Direct flights from Ontario to USA
Explore direct flight options from Ontario to USA based on user searches, and compare prices and availability for your desired travel dates. Data last updated 20 October 2026.

Last-minute flights from Ontario to USA
Discover last-minute flight deals from Ontario to USA. Data last updated 20 October 2026 and is based on user searches.

One-way flights from Ontario to USA
Search for one-way flight options from Ontario to USA. Find affordable one-way fares based on user searches. Data last updated 20 October 2026.