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$30+ 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 2/22. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LAX
feb. 14 — feb. 211
sáb. 2/14
sáb. 2/21
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 enero 15, 2026.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$59
(CheapOair)

One-way from

$30
(CheapOair)

Popular in

December

Cheapest in

January

Average price

$282

Good round-trip deal

$95 or less

Good one-way deal

$44 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. 4% potential increase in price ($14 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 enero 15, 2026.

This Frontier deal was found by Cheapflights users on 1/14. 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.
sáb. 2/148:09 pm
ONT
-
LAS
Nonstop1h 08m
Frontier
lun. 2/1612:00 pm
LAS
-
ONT
Nonstop1h 11m
Frontier
Deal found 1/14$59
This Frontier deal was found by Cheapflights users on 1/14. 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.
jue. 2/511:04 am
ONT
-
LAS
Nonstop1h 13m
Frontier
lun. 2/96:02 pm
LAS
-
ONT
Nonstop1h 08m
Frontier
Deal found 1/14$60
This CheapOair deal was found by Cheapflights users on 1/14. 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.
jue. 2/197:22 pm
ONT
-
LAS
Nonstop1h 09m
Frontier
lun. 2/234:39 pm
LAS
-
ONT
Nonstop1h 09m
Frontier
Deal found 1/14$61
This Booking.com deal was found by Cheapflights users on 1/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 2/209:43 pm
ONT
-
LAS
Nonstop1h 10m
Frontier
sáb. 2/216:06 pm
LAS
-
ONT
Nonstop1h 08m
Frontier
Deal found 1/14$62
This Super.com deal was found by Cheapflights users on 1/14. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 2/274:46 pm
ONT
-
LAS
Nonstop1h 15m
Frontier
lun. 3/24:39 pm
LAS
-
ONT
Nonstop1h 09m
Frontier
Deal found 1/14$63
This Super.com deal was found by Cheapflights users on 1/14. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 2/77:35 pm
ONT
-
LAS
Nonstop1h 09m
Frontier
lun. 2/96:02 pm
LAS
-
ONT
Nonstop1h 08m
Frontier
Deal found 1/14$64
This Expedia deal was found by Cheapflights users on 1/14. 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.
jue. 2/127:22 pm
ONT
-
LAS
Nonstop1h 09m
Frontier
lun. 2/1612:00 pm
LAS
-
ONT
Nonstop1h 11m
Frontier
Deal found 1/14$65
This Trip.com deal was found by Cheapflights users on 1/13. 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. 2/53:22 pm
ONT
-
LAS
Nonstop1h 12m
Frontier
dom. 2/86:24 pm
LAS
-
ONT
Nonstop1h 08m
Frontier
Deal found 1/13$66
This Kiwi.com deal was found by Cheapflights users on 1/13. 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. 2/58:48 pm
ONT
-
LAS
Nonstop1h 08m
Frontier
vie. 2/68:15 am
LAS
-
ONT
Nonstop1h 08m
Frontier
Deal found 1/13$67
This Frontier deal was found by Cheapflights users on 1/14. 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.
jue. 2/127:22 pm
ONT
-
LAS
Nonstop1h 09m
Frontier
mar. 2/1712:00 pm
LAS
-
ONT
Nonstop1h 11m
Frontier
Deal found 1/14$68
This Frontier deal was found by Cheapflights users on 1/13. 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.
jue. 2/127:22 pm
ONT
-
LAS
Nonstop1h 09m
Frontier
sáb. 2/146:06 pm
LAS
-
ONT
Nonstop1h 08m
Frontier
Deal found 1/13$69
This Kiwi.com deal was found by Cheapflights users on 1/14. 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.
mar. 2/108:36 am
ONT
-
PHX
1 stop7h 43m
Frontier
mié. 2/113:05 pm
PHX
-
ONT
1 stop4h 17m
Frontier
Deal found 1/14$115

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 enero 15, 2026.
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

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

jue. 2/12

7:22 pm-8:31 pm

Nonstop1h 09m

Las Vegas Harry Reid Intl

lun. 2/16

12:00 pm-1:11 pm

Nonstop1h 11m

$79

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

mar. 2/10

3:20 pm-5:40 pm

Nonstop1h 20m

Phoenix Sky Harbor Intl

mié. 2/11

9:55 am-1:50 pm

1 stop4h 55m

$127

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

mar. 2/10

11:10 am-5:45 pm

1 stop5h 35m

Phoenix Sky Harbor Intl

mar. 2/17

9:05 pm-9:20 pm

Nonstop1h 15m

$127

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

sáb. 1/31

7:15 am-2:46 pm

1 stop7h 31m

Las Vegas Harry Reid Intl

mié. 2/4

1:01 pm-2:12 pm

Nonstop1h 11m

$129

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

mar. 3/3

8:40 am-11:59 pm

1 stop15h 19m

Las Vegas Harry Reid Intl

dom. 3/8

12:00 pm-1:11 pm

Nonstop1h 11m

$145

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

sáb. 2/7

1:45 pm-9:10 pm

1 stop7h 25m

Seattle/Tacoma Intl

dom. 2/8

6:05 am-2:45 pm

1 stop8h 40m

$151

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

mié. 2/11

12:10 pm-6:35 pm

1 stop6h 25m

Seattle/Tacoma Intl

jue. 2/19

8:35 am-5:35 pm

1 stop9h 00m

$151

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

sáb. 3/7

10:25 am-7:15 pm

1 stop8h 50m

Seattle/Tacoma Intl

jue. 3/12

6:30 am-12:25 pm

1 stop5h 55m

$151

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

mié. 2/4

10:00 am-5:40 pm

1 stop6h 40m

Phoenix Sky Harbor Intl

sáb. 2/7

2:45 pm-3:05 pm

Nonstop1h 20m

$154

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

mar. 2/17

3:50 pm-9:55 pm

1 stop5h 05m

Phoenix Sky Harbor Intl

jue. 2/19

8:45 am-9:05 am

Nonstop1h 20m

$154

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/14

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 $19). Flying from Ontario to North America in July is currently the most expensive (average of $49). 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 enero 15, 2026.

It’s typically best to fly out from Ontario to North America in the afternoon. Doing so could potentially save you 28% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from Ontario to North America?

Use this chart to determine the cheapest time to fly round-trip from Ontario to North America. Price data was last updated on January 10, 2026.

Travelers seeking maximum savings on their Ontario to North America flight should consider departing on Wednesday at noon when fares are most often at their lowest. Wednesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 enero 15, 2026.
Read reviews from past customers who have flown Southwest, Delta, and United Airlines from Ontario to North America. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,258 reviews

Comfort

8.0

Overall

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Southwest
8.0
Very good
4,258 reviews
Southwest
8.0
Very good
4,258 reviews

Comfort

8.0

Overall

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Delta
7.9
Good
8,051 reviews
Southwest
8.0
Very good
4,258 reviews

Comfort

8.0

Overall

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
United Airlines
7.4
Good
9,164 reviews
Southwest
8.0
Very good
4,258 reviews

Comfort

8.0

Overall

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
American Airlines
7.2
Good
11,136 reviews
Southwest
8.0
Very good
4,258 reviews

Comfort

8.0

Overall

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Frontier
5.7
Fair
3,057 reviews
Southwest
8.0
Very good
4,258 reviews

Comfort

8.0

Overall

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

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.

  • How long is the flight from Ontario to North America?

    A quick flight from Ontario to North America can take about 1h 09m. Frontier provides one of the quickest options available for as low as $79. The distance from Ontario to North America is about 197 mi. Most flights are nonstop.

  • 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 $19. However, be on the lookout for offers from Spirit Airlines and Volaris, 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 - San Francisco, 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 $19). Flying from Ontario to North America in July is currently the most expensive (average of $49). 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 8 airlines flying from Ontario to North America

Discover the top 8 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 enero 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$24Average$150FlexibilityNo cancel feeOn-time65%
FrontierCheapest$29Average$181FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$58Average$382FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$67Average$269FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$97Average$367FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$155Average$329FlexibilityNo cancel feeOn-time62%
DeltaCheapest$178Average$374FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$190Average$425FlexibilityNo cancel feeOn-time71%

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