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$42+ 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 5/17. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LAX
May 5 — May 121
Mon 5/5
Mon 5/12
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 30, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$57
(United Airlines)

One-way from

$42
(Flightnetwork)

Popular in

June

Cheapest in

January

Average price

$373

Good round-trip deal

$80 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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Provider most trusted by Cheapflights users for Los Angeles-New York (NYC) flights.
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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. 10% potential increase in price ($44 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($7 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 30, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 4/28. 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
Sat 5/1010:48 amSFO - ONT
Nonstop1h 27mFrontier
Deal found 4/28$56
This Cheapflightsfares deal was found by Cheapflights users on 4/28. 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 6/76:00 amONT - LAS
Nonstop1h 10mFrontier
Mon 6/97:45 pmLAS - ONT
Nonstop1h 06mFrontier
Deal found 4/28$71
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Sun 5/186:00 amONT - SFO
Nonstop1h 27mUnited Airlines
Sun 5/1810:54 amSFO - ONT
Nonstop1h 30mUnited Airlines
Deal found 4/29$85
This Kiwi.com deal was found by Cheapflights users on 4/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/298:38 pmONT - DFW
Nonstop3h 07mFrontier
Fri 6/66:03 pmDFW - ONT
Nonstop3h 09mFrontier
Deal found 4/28$99
This Frontier deal was found by Cheapflights users on 4/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/210:03 amONT - SEA
Nonstop2h 46mFrontier
Tue 6/103:10 pmSEA - ONT
Nonstop2h 42mFrontier
Deal found 4/29$100
This Mytrip deal was found by Cheapflights users on 4/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/192:06 pmONT - IAH
Nonstop3h 31mFrontier
Wed 5/285:12 pmIAH - ONT
Nonstop3h 30mFrontier
Deal found 4/29$105
This Hawaiian Airlines deal was found by Cheapflights users on 4/28. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/206:00 amONT - SEA
Nonstop2h 42mHawaiian Airlines
Tue 5/208:15 pmSEA - ONT
Nonstop2h 31mHawaiian Airlines
Deal found 4/28$131
This Alaska Airlines deal was found by Cheapflights users on 4/29. 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 5/2111:51 amONT - SEA
Nonstop2h 44mAlaska Airlines
Wed 5/288:26 amSEA - ONT
Nonstop2h 31mAlaska Airlines
Deal found 4/29$137
This Expedia deal was found by Cheapflights users on 4/29. 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.
Mon 5/194:29 pmONT - SEA
Nonstop3h 03mMultiple Airlines
Wed 5/218:26 amSEA - ONT
Nonstop2h 31mMultiple Airlines
Deal found 4/29$153
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/316:00 amONT - SEA
Nonstop2h 55mDelta
Sun 6/18:20 amSEA - ONT
Nonstop2h 44mDelta
Deal found 4/29$158
This Southwest deal was found by Cheapflights users on 4/29. 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.
Sat 8/3012:00 pmONT - LAS
1 stop6h 40mSouthwest
Wed 9/34:20 pmLAS - ONT
Nonstop1h 10mSouthwest
Deal found 4/29$167
This Expedia deal was found by Cheapflights users on 4/29. 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.
Fri 5/3012:40 pmONT - IAH
Nonstop3h 31mMultiple Airlines
Wed 6/45:54 pmIAH - ONT
1 stop8h 03mMultiple Airlines
Deal found 4/29$193

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 30, 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

Thu 5/15

1:45 pm-3:13 pm

Nonstop1h 28m

San Francisco

Sat 5/24

4:12 pm-5:39 pm

Nonstop1h 27m

$57

OntarioSan Francisco

ONT - SFO

ONTSFO

Ontario

Fri 5/9

8:24 am-10:02 am

Nonstop1h 38m

San Francisco

Sun 5/11

8:34 am-10:02 am

Nonstop1h 28m

$58

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

Sat 6/7

6:00 am-7:10 am

Nonstop1h 10m

Las Vegas Harry Reid Intl

Mon 6/9

7:45 pm-8:51 pm

Nonstop1h 06m

$71

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Thu 5/29

8:38 pm-1:45 am

Nonstop3h 07m

Dallas/Fort Worth

Fri 6/6

6:03 pm-7:12 pm

Nonstop3h 09m

$99

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Sat 6/7

10:03 am-12:49 pm

Nonstop2h 46m

Seattle/Tacoma Intl

Wed 6/11

1:50 pm-4:30 pm

Nonstop2h 40m

$101

OntarioHouston

ONT - IAH

ONTIAH

Ontario

Mon 5/19

2:06 pm-7:37 pm

Nonstop3h 31m

Houston George Bush Intcntl

Wed 5/28

5:12 pm-6:42 pm

Nonstop3h 30m

$103

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Mon 5/19

4:29 pm-7:32 pm

Nonstop3h 03m

Seattle/Tacoma Intl

Wed 5/21

3:53 pm-6:25 pm

Nonstop2h 32m

$128

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Tue 5/20

4:45 pm-7:25 pm

Nonstop2h 40m

Seattle/Tacoma Intl

Tue 5/27

3:53 pm-6:25 pm

Nonstop2h 32m

$147

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

Tue 5/20

11:00 am-4:15 pm

2 stops5h 15m

Las Vegas Harry Reid Intl

Thu 5/22

5:45 pm-6:50 pm

Nonstop1h 05m

$152

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Sat 5/31

6:00 am-8:55 am

Nonstop2h 55m

Seattle/Tacoma Intl

Sun 6/1

8:20 am-11:04 am

Nonstop2h 44m

$158

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

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 March is currently the most expensive (average of $327). 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 30, 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 30, 2025.
Alaska Airlines
8.0
Very good
9,961 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
9,961 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,295 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,929 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,405 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,696 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 $42. However, be on the lookout for offers from United Airlines and Alaska Airlines, 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 - New York John F Kennedy Intl, Ontario - Seattle/Tacoma Intl and Ontario - Dallas/Fort Worth.

  • 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 March is currently the most expensive (average of $327). 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 10 airlines flying from Ontario to North America

Discover the top 10 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 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$24Average$172FlexibilityNo cancel feeOn-time65%
FrontierCheapest$36Average$170FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$60Average$396FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$67Average$295FlexibilityNo cancel feeOn-time75%
Breeze AirwaysCheapest$78Average$136FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$85Average$354FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$88Average$253FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$97Average$363FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$186Average$362FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$202Average$431FlexibilityNo cancel feeOn-time71%

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