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$39+ Cheap flights from Ontario (ONT) to North America

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 5/24. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LAX
Apr 16 — Apr 231
Wed 4/16
Wed 4/23
1 adult, Economy
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Cheap flight deals from Ontario to North America

Keep the following information in mind while searching for Ontario to North America flight deals. Data was last updated April 11, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$52
(United Airlines)

One-way from

$39
(Frontier)

Popular in

June

Cheapest in

January

Average price

$367

Good round-trip deal

$100 or less

Good one-way deal

$54 or less
Provider with most accurate pricing for Los Angeles-New York (NYC) flight deals.
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From Ontario to North America
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One-way flight from Ontario to North America
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Highest demand for flights based on searches. 12% potential increase in price ($50 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from Ontario to North America.
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Price to beat on a one-way flight from Ontario to North America.
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Find flight deals from Ontario to North America

Cheapest flights from Ontario to North America
Explore the most affordable flight options available from Ontario to North America. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 11, 2025.

This United Airlines deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/101:45 pmONT - SFO
Nonstop1h 28mUnited Airlines
Sat 5/107:05 pmSFO - ONT
Nonstop1h 29mUnited Airlines
Deal found 4/9$52
This Cheapflightsfares deal was found by Cheapflights users on 4/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/98:24 amONT - SFO
Nonstop1h 38mFrontier
Mon 5/128:34 amSFO - ONT
Nonstop1h 28mFrontier
Deal found 4/11$57
This CheapOair deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/910:52 amONT - LAS
Nonstop1h 12mFrontier
Fri 5/166:20 amLAS - ONT
Nonstop1h 04mFrontier
Deal found 4/9$58
This Cheapflightsfares deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1312:59 amONT - DEN
Nonstop2h 18mFrontier
Tue 5/2010:37 pmDEN - ONT
Nonstop2h 22mFrontier
Deal found 4/8$76
This FlightHub deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/63:05 pmONT - DFW
Nonstop3h 15mFrontier
Tue 5/1312:15 pmDFW - ONT
Nonstop3h 20mFrontier
Deal found 4/9$94
This Cheapflightsfares deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/3110:03 amONT - SEA
Nonstop3h 00mFrontier
Mon 6/161:50 pmSEA - ONT
Nonstop2h 40mFrontier
Deal found 4/10$101
This Southwest deal was found by Cheapflights users on 4/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/89:05 pmONT - LAS
Nonstop1h 05mSouthwest
Thu 5/159:35 amLAS - ONT
1 stop3h 45mSouthwest
Deal found 4/11$107
This Expedia deal was found by Cheapflights users on 4/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/1110:06 amONT - SEA
Nonstop2h 46mMultiple Airlines
Sat 6/149:30 pmSEA - ONT
Nonstop2h 43mMultiple Airlines
Deal found 4/11$128
This United Airlines deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/104:15 pmONT - DEN
Nonstop2h 27mUnited Airlines
Sun 5/1111:15 amDEN - ONT
Nonstop2h 23mUnited Airlines
Deal found 4/9$151
This Southwest deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/282:55 pmONT - SFO
1 stop8h 55mSouthwest
Thu 5/15:40 amSFO - ONT
1 stop4h 10mSouthwest
Deal found 4/10$156
This Alaska Airlines deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/74:29 pmONT - SEA
Nonstop2h 41mAlaska Airlines
Wed 5/211:18 pmSEA - ONT
Nonstop2h 32mAlaska Airlines
Deal found 4/10$157
This Southwest deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/164:55 pmONT - DEN
1 stop4h 50mSouthwest
Mon 5/196:15 amDEN - ONT
1 stop5h 45mSouthwest
Deal found 4/10$157

Cheapflights Fare Finder

Customize your flight search to find flights from Ontario to North America 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 2,558,603 searches. Data last updated April 11, 2025.
Use the filters below to find and compare flights from Ontario to North America that are best for you.

Fly from

Ontario

Fly to

North America

Route

Depart

Return

Price

OntarioSan Francisco

ONT - SFO

ONTSFO

Ontario

Sat 5/10

1:45 pm-3:13 pm

Nonstop1h 28m

San Francisco

Sat 5/10

7:05 pm-8:34 pm

Nonstop1h 29m

$52

OntarioSan Francisco

ONT - SFO

ONTSFO

Ontario

Fri 5/2

8:24 am-10:02 am

Nonstop1h 38m

San Francisco

Sat 5/3

10:48 am-12:15 pm

Nonstop1h 27m

$57

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

Fri 5/9

10:52 am-12:04 pm

Nonstop1h 12m

Las Vegas Harry Reid Intl

Fri 5/16

6:20 am-7:24 am

Nonstop1h 04m

$58

OntarioDenver

ONT - DEN

ONTDEN

Ontario

Tue 5/13

12:59 am-4:17 am

Nonstop2h 18m

Denver Intl

Tue 5/20

10:37 pm-11:59 pm

Nonstop2h 22m

$76

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Wed 4/30

2:27 pm-7:29 pm

Nonstop3h 02m

Dallas/Fort Worth

Wed 5/7

4:27 pm-5:47 pm

Nonstop3h 20m

$97

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Sat 5/31

10:03 am-1:03 pm

Nonstop3h 00m

Seattle/Tacoma Intl

Mon 6/16

1:50 pm-4:30 pm

Nonstop2h 40m

$101

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

Thu 5/8

9:05 pm-10:10 pm

Nonstop1h 05m

Las Vegas Harry Reid Intl

Thu 5/15

9:35 am-1:20 pm

1 stop3h 45m

$107

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Wed 6/11

10:06 am-12:52 pm

Nonstop2h 46m

Seattle/Tacoma Intl

Sat 6/14

9:30 pm-12:13 am

Nonstop2h 43m

$128

OntarioDenver

ONT - DEN

ONTDEN

Ontario

Thu 5/1

3:15 pm-6:30 pm

Nonstop2h 15m

Denver Intl

Sat 5/10

4:05 pm-5:25 pm

Nonstop2h 20m

$137

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Tue 5/13

11:46 am-2:31 pm

Nonstop2h 45m

Seattle/Tacoma Intl

Tue 5/13

5:55 pm-8:29 pm

Nonstop2h 34m

$151

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/11

Showing 1-10 of 60 results
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Best time to book a flight from Ontario to North America

Have a flexible travel schedule? Discover the best time to fly to North America from Ontario 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 Ontario to North America

What is the cheapest month to book a flight from Ontario to North America?

Currently, January is the cheapest month in which you can book a flight from Ontario to North America (average of $246). Flying from Ontario to North America in June is currently the most expensive (average of $328). 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 ONT to NA?

Find hourly flight availability from Ontario to North America. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 11, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to North America as you normally would.

Rainfall in North America by month

Plan your trip to North America by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in North America ranges from 2.8 - 4.5 inches per month. July is typically the wettest month, when rainfall can reach 4.5 in. February is typically the driest time to visit North America when rainfall is around 2.8 in.

Temperature in North America by month

Plan your trip to North America by taking into account the average temperature totals by month.

If weather is an important factor for your trip to North America, 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 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

Reviews of airlines servicing North America

Get insights into the airlines that provide service to North America. 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 North America. Reviews last updated April 11, 2025.
Alaska Airlines
8.0
Very good
9,851 reviews

Entertainment

7.1

Comfort

7.9

Crew

8.5

Food

7.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,851 reviews
Alaska Airlines
8.0
Very good
9,851 reviews

Entertainment

7.1

Comfort

7.9

Crew

8.5

Food

7.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,279 reviews
Alaska Airlines
8.0
Very good
9,851 reviews

Entertainment

7.1

Comfort

7.9

Crew

8.5

Food

7.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,910 reviews
Alaska Airlines
8.0
Very good
9,851 reviews

Entertainment

7.1

Comfort

7.9

Crew

8.5

Food

7.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.9
Good
2,366 reviews
Alaska Airlines
8.0
Very good
9,851 reviews

Entertainment

7.1

Comfort

7.9

Crew

8.5

Food

7.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,636 reviews
Alaska Airlines
8.0
Very good
9,851 reviews

Entertainment

7.1

Comfort

7.9

Crew

8.5

Food

7.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

Find useful and relevant information for your journey from Ontario to North America. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to North America?

    Most people fly from Ontario (ONT) if they book a flight from Ontario to North America. Ontario is conveniently located just 3.1 mi from Ontario’s city center.

  • What are the cheapest airlines to fly from Ontario to North America one-way?

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $39. However, be on the lookout for offers from United Airlines and Southwest, as they are both options that can get you from Ontario to North America for a low price.

  • What are the most popular routes from Ontario to North America?

    The most popular flight routes from Ontario to North America are Ontario - Dallas/Fort Worth, Ontario - Seattle/Tacoma Intl and Ontario - Newark.

  • Can I find deals for flights from Ontario to North America that include hotel bookings?

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

  • How can I find direct flights from Ontario to North America?

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

  • Can I find deals for business class flights from Ontario to North America?

    Yes. Cheapflights offers flight deals from Ontario to North America 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 Ontario to North America?

    Currently, January is the cheapest month in which you can book a flight from Ontario to North America (average of $246). Flying from Ontario to North America in June is currently the most expensive (average of $328). 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

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Alternative routes for Ontario to North America

See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from Ontario to North America

Discover the top 9 airlines that operate flights from Ontario to North America. 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 2,558,603 searches. Data last updated April 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$24Average$184FlexibilityNo cancel feeOn-time65%
FrontierCheapest$36Average$184FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$67Average$322FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$70Average$414FlexibilityNo cancel feeOn-time69%
Breeze AirwaysCheapest$78Average$136FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$85Average$377FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$97Average$387FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$97Average$370FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$202Average$432FlexibilityNo cancel feeOn-time71%

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