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$49+ 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 5/20. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LAX
mar. 30 — abr. 61
dom. 3/30
dom. 4/6
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 marzo 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$52
(United Airlines)

One-way from

$49
(Southwest)

Popular in

June

Cheapest in

January

Average price

$367

Good round-trip deal

$93 or less

Good one-way deal

$50 or less
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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 ($49 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in March 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 marzo 25, 2025.

This United Airlines deal was found by Cheapflights users on 3/24. 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.
vie. 5/26:48 pmONT - SFO
Nonstop1h 44mUnited Airlines
sáb. 5/310:54 amSFO - ONT
Nonstop1h 30mUnited Airlines
Deal found 3/24$57
This Trip.com deal was found by Cheapflights users on 3/24. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/219:41 pmONT - LAS
Nonstop1h 14mFrontier
vie. 4/252:29 pmLAS - ONT
Nonstop1h 10mFrontier
Deal found 3/24$69
This Trip.com deal was found by Cheapflights users on 3/24. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/248:10 amONT - SFO
Nonstop1h 41mFrontier
lun. 4/288:35 amSFO - ONT
Nonstop1h 28mFrontier
Deal found 3/24$70
This Southwest deal was found by Cheapflights users on 3/24. 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.
mar. 4/157:55 amONT - LAS
Nonstop1h 05mSouthwest
mar. 4/152:40 pmLAS - ONT
1 stop5h 25mSouthwest
Deal found 3/24$107
This Southwest deal was found by Cheapflights users on 3/24. 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.
vie. 4/44:40 pmONT - SFO
1 stop6h 20mSouthwest
lun. 4/75:50 pmSFO - ONT
1 stop5h 25mSouthwest
Deal found 3/24$154
This Kiwi.com deal was found by Cheapflights users on 3/24. 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.
jue. 5/154:29 pmONT - SEA
Nonstop3h 03mFrontier
lun. 5/196:50 pmSEA - ONT
Nonstop2h 35mFrontier
Deal found 3/24$157
This Expedia deal was found by Cheapflights users on 3/24. 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.
lun. 4/710:12 amONT - SEA
Nonstop2h 54mMultiple Airlines
mar. 4/158:01 amSEA - ONT
Nonstop2h 38mMultiple Airlines
Deal found 3/24$175
This Southwest deal was found by Cheapflights users on 3/23. 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.
sáb. 5/107:40 amONT - HOU
Nonstop3h 00mSouthwest
lun. 5/128:35 amHOU - ONT
Nonstop3h 30mSouthwest
Deal found 3/23$177
This Delta deal was found by Cheapflights users on 3/24. 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.
mar. 5/62:35 pmONT - SEA
Nonstop2h 50mDelta
mié. 5/77:55 pmSEA - ONT
Nonstop2h 40mDelta
Deal found 3/24$177
This iWofly deal was found by Cheapflights users on 3/24. 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/246:00 amONT - SEA
Nonstop2h 46mAlaska Airlines
jue. 5/112:59 pmSEA - ONT
Nonstop2h 33mAlaska Airlines
Deal found 3/24$191
This American Airlines deal was found by Cheapflights users on 3/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/96:15 amONT - SFO
1 stop6h 01mAmerican Airlines
mié. 4/93:54 pmSFO - ONT
1 stop6h 04mAmerican Airlines
Deal found 3/24$193
This Trip.com deal was found by Cheapflights users on 3/24. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 4/196:00 amONT - SEA
Nonstop2h 50mHawaiian Airlines
sáb. 4/199:23 pmSEA - ONT
Nonstop2h 36mHawaiian Airlines
Deal found 3/24$194

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 marzo 25, 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

vie. 5/2

6:48 pm-8:32 pm

Nonstop1h 44m

San Francisco

sáb. 5/3

10:54 am-12:24 pm

Nonstop1h 30m

$57

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

lun. 4/21

9:41 pm-10:55 pm

Nonstop1h 14m

Las Vegas Harry Reid Intl

vie. 4/25

2:29 pm-3:39 pm

Nonstop1h 10m

$69

OntarioSan Francisco

ONT - SFO

ONTSFO

Ontario

jue. 4/24

8:10 am-9:51 am

Nonstop1h 41m

San Francisco

lun. 4/28

8:35 am-10:03 am

Nonstop1h 28m

$70

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

mar. 4/15

7:55 am-9:00 am

Nonstop1h 05m

Las Vegas Harry Reid Intl

mar. 4/15

2:40 pm-8:05 pm

1 stop5h 25m

$107

OntarioSan Francisco

ONT - SFO

ONTSFO

Ontario

vie. 4/4

4:40 pm-11:00 pm

1 stop6h 20m

San Francisco

lun. 4/7

5:50 pm-11:15 pm

1 stop5h 25m

$154

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

jue. 5/15

4:29 pm-7:32 pm

Nonstop3h 03m

Seattle/Tacoma Intl

lun. 5/19

6:50 pm-9:25 pm

Nonstop2h 35m

$157

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

lun. 4/7

10:12 am-1:06 pm

Nonstop2h 54m

Seattle/Tacoma Intl

mar. 4/15

8:01 am-10:39 am

Nonstop2h 38m

$175

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

mar. 5/6

2:35 pm-5:25 pm

Nonstop2h 50m

Seattle/Tacoma Intl

mié. 5/7

7:55 pm-10:35 pm

Nonstop2h 40m

$177

OntarioHouston

ONT - HOU

ONTHOU

Ontario

sáb. 5/10

7:40 am-12:40 pm

Nonstop3h 00m

Houston Hobby

lun. 5/12

8:35 am-10:05 am

Nonstop3h 30m

$177

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

jue. 4/24

6:00 am-8:46 am

Nonstop2h 46m

Seattle/Tacoma Intl

jue. 5/1

12:59 pm-3:32 pm

Nonstop2h 33m

$191

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

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 $330). 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 marzo 25, 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 marzo 25, 2025.
Delta
8.0
Very good
7,890 reviews

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,890 reviews
Delta
8.0
Very good
7,890 reviews

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Alaska Airlines
8.0
Very good
9,782 reviews
Delta
8.0
Very good
7,890 reviews

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Southwest
8.0
Very good
4,272 reviews
Delta
8.0
Very good
7,890 reviews

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Hawaiian Airlines
7.9
Good
2,330 reviews
Delta
8.0
Very good
7,890 reviews

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Qatar Airways
7.4
Good
3,540 reviews
Delta
8.0
Very good
7,890 reviews

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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 Southwest, with whom users have recently found tickets for as low as $49. However, be on the lookout for offers from Frontier and United 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 - Seattle/Tacoma Intl, Ontario - Honolulu 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 March is currently the most expensive (average of $330). 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 marzo 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$25Average$178FlexibilityNo cancel feeOn-time65%
FrontierCheapest$36Average$166FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$67Average$306FlexibilityNo cancel feeOn-time75%
DeltaCheapest$68Average$356FlexibilityNo cancel feeOn-timeN/A
Breeze AirwaysCheapest$78Average$136FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$83Average$402FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$88Average$239FlexibilityNo cancel feeOn-time85%
JetBlueCheapest$97Average$374FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$99Average$360FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$202Average$433FlexibilityNo cancel feeOn-time71%
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