HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
North America

$29+ 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 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to North America with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 January 29, 2026.

This Super.com deal was found by Cheapflights users on 1/27. 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.
Thu 2/267:22 pm
ONT
-
LAS
Nonstop1h 09m
Frontier
Thu 3/55:17 pm
LAS
-
ONT
Nonstop1h 10m
Frontier
Deal found 1/27$59
This Frontier deal was found by Cheapflights users on 1/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/122:06 pm
ONT
-
LAS
Nonstop1h 14m
Frontier
Mon 3/167:00 am
LAS
-
ONT
Nonstop1h 06m
Frontier
Deal found 1/28$60
This Super.com deal was found by Cheapflights users on 1/28. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/279:43 pm
ONT
-
LAS
Nonstop1h 10m
Frontier
Sat 2/2812:00 pm
LAS
-
ONT
Nonstop1h 11m
Frontier
Deal found 1/28$61
This Super.com deal was found by Cheapflights users on 1/27. 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.
Tue 2/103:22 pm
ONT
-
LAS
Nonstop1h 12m
Frontier
Fri 2/136:15 am
LAS
-
ONT
Nonstop1h 07m
Frontier
Deal found 1/27$62
This Frontier deal was found by Cheapflights users on 1/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/91:05 pm
ONT
-
LAS
Nonstop1h 12m
Frontier
Thu 2/1212:00 pm
LAS
-
ONT
Nonstop1h 11m
Frontier
Deal found 1/28$63
This Super.com deal was found by Cheapflights users on 1/27. 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.
Sun 2/88:27 pm
ONT
-
LAS
Nonstop1h 08m
Frontier
Tue 2/1012:41 pm
LAS
-
ONT
Nonstop1h 11m
Frontier
Deal found 1/27$67
This Mytrip deal was found by Cheapflights users on 1/29. 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.
Wed 2/43:07 pm
ONT
-
LAS
Nonstop1h 12m
Frontier
Thu 2/512:00 pm
LAS
-
ONT
Nonstop1h 11m
Frontier
Deal found 1/29$68
This Mytrip deal was found by Cheapflights users on 1/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/103:22 pm
ONT
-
LAS
Nonstop1h 12m
Frontier
Wed 2/1112:41 pm
LAS
-
ONT
Nonstop1h 11m
Frontier
Deal found 1/28$69
This Frontier deal was found by Cheapflights users on 1/26. 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.
Sat 2/216:00 am
ONT
-
DEN
Nonstop2h 20m
Frontier
Wed 2/258:00 pm
DEN
-
ONT
Nonstop2h 34m
Frontier
Deal found 1/26$70
This Super.com deal was found by Cheapflights users on 1/27. 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.
Fri 2/209:43 pm
ONT
-
LAS
Nonstop1h 10m
Frontier
Tue 3/312:00 pm
LAS
-
ONT
Nonstop1h 11m
Frontier
Deal found 1/27$72
This Cheapflightsfares deal was found by Cheapflights users on 1/28. 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 2/136:00 am
ONT
-
DEN
Nonstop2h 20m
Frontier
Tue 2/248:00 pm
DEN
-
ONT
Nonstop2h 34m
Frontier
Deal found 1/28$72
This Super.com deal was found by Cheapflights users on 1/27. 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.
Fri 2/209:43 pm
ONT
-
LAS
Nonstop1h 10m
Frontier
Mon 2/234:39 pm
LAS
-
ONT
Nonstop1h 09m
Frontier
Deal found 1/27$73

Find 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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$59
(Super.com)

One-way from

$29
(Super.com)

Popular in

December

Cheapest in

February

Average price

$292

Good round-trip deal

$86 or less

Good one-way deal

$42 or less
Provider with most accurate pricing for Los Angeles-New York (NYC) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-New York (NYC) flights.
Search Deals
From Ontario to North America
Search Deals
One-way flight from Ontario to North America
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($18 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Ontario to North America.
Search Deals
Price to beat on a one-way flight from Ontario to North America.
Search Deals

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 January 29, 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

OntarioDenver

ONT - DEN

ONTDEN

Ontario

Sun 3/8

6:15 am-9:35 am

Nonstop2h 20m

Denver Intl

Mon 3/16

6:00 am-3:37 pm

1 stop10h 37m

$137

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Thu 2/19

7:22 pm-5:47 am

1 stop8h 25m

Dallas/Fort Worth

Sat 2/21

9:55 pm-7:59 am

1 stop12h 04m

$138

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Sat 3/21

6:00 am-8:55 am

Nonstop2h 55m

Seattle/Tacoma Intl

Wed 3/25

7:50 pm-10:34 pm

Nonstop2h 44m

$157

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Wed 2/18

6:14 am-9:09 am

Nonstop2h 55m

Seattle/Tacoma Intl

Tue 2/24

8:30 am-11:08 am

Nonstop2h 38m

$157

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Sat 2/28

4:02 pm-6:52 pm

Nonstop2h 50m

Seattle/Tacoma Intl

Sun 3/8

8:30 am-11:08 am

Nonstop2h 38m

$167

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Tue 4/14

2:20 pm-5:24 pm

Nonstop3h 04m

Seattle/Tacoma Intl

Mon 4/20

7:50 pm-10:37 pm

Nonstop2h 47m

$167

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Wed 3/4

3:30 pm-6:33 pm

Nonstop3h 03m

Seattle/Tacoma Intl

Sun 3/8

7:50 pm-10:33 pm

Nonstop2h 43m

$167

OntarioSan Francisco

ONT - SFO

ONTSFO

Ontario

Wed 2/25

6:37 pm-8:10 pm

Nonstop1h 33m

San Francisco

Wed 3/4

11:20 am-12:48 pm

Nonstop1h 28m

$169

OntarioDenver

ONT - DEN

ONTDEN

Ontario

Wed 2/25

2:25 pm-5:35 pm

Nonstop2h 10m

Denver Intl

Sun 3/1

7:55 am-9:30 am

Nonstop2h 35m

$177

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Thu 4/16

6:00 am-8:54 am

Nonstop2h 54m

Seattle/Tacoma Intl

Sun 4/19

7:00 am-9:39 am

Nonstop2h 39m

$177

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 60 results
1
2
3
...
6

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, February 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 January 29, 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 24, 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 January 29, 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
4,267 reviews

Overall

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Boarding

8.1

Comfort

8.0

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
4,267 reviews
Southwest
8.0
Very good
4,267 reviews

Overall

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Boarding

8.1

Comfort

8.0

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
8,128 reviews
Southwest
8.0
Very good
4,267 reviews

Overall

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Boarding

8.1

Comfort

8.0

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
9,215 reviews
Southwest
8.0
Very good
4,267 reviews

Overall

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Boarding

8.1

Comfort

8.0

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
11,205 reviews
Southwest
8.0
Very good
4,267 reviews

Overall

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Boarding

8.1

Comfort

8.0

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
3,056 reviews
Southwest
8.0
Very good
4,267 reviews

Overall

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Boarding

8.1

Comfort

8.0

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 2h 20m. Frontier provides one of the quickest options available for as low as $137. The distance from Ontario to North America is about 817 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 - Honolulu.

  • 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, February 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

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 North America

See prices for flight routes from nearby airports that may be better suited for you.
San Francisco to John F Kennedy Intl flights
San Francisco to Newark flights
San Francisco to LaGuardia flights
Los Angeles to John F Kennedy Intl flights
Los Angeles to Seattle flights
San Francisco to Las Vegas flights
Los Angeles to Haneda flights
Los Angeles to Narita flights
Los Angeles to Honolulu flights
San Francisco to Los Angeles flights
San Francisco to Ontario flights
Los Angeles to Mexico City flights
San Jose to Los Angeles flights
Los Angeles to San Francisco flights
Ontario to San Francisco flights
San Francisco to Santa Ana flights
Los Angeles to Newark flights
Los Angeles to Cancún flights
Los Angeles to LaGuardia flights
Los Angeles to Las Vegas flights
San Francisco to Honolulu flights
San Francisco to Haneda flights
Los Angeles to San Jose flights
Ontario to Seattle flights
Los Angeles to Miami flights
Los Angeles to Orlando flights
Santa Ana to San Francisco flights
San Francisco to Sky Harbor Intl flights
Burbank to Las Vegas flights
Los Angeles to Hobby flights
Los Angeles to O'Hare Intl flights
San Francisco to Mexico City flights
San Francisco to Dallas/Fort Worth flights
Santa Ana to Las Vegas flights
San Francisco to Narita flights
San Francisco to Burbank flights
San Francisco to Seattle flights
Los Angeles to Sky Harbor Intl flights
San Jose to Las Vegas flights
San Francisco to Miami flights
San Francisco to Cancún flights
Los Angeles to George Bush Intcntl flights
Burbank to San Francisco flights
San Jose to Seattle flights
Los Angeles to Heathrow flights
Los Angeles to Denver flights
Los Angeles to Suvarnabhumi flights
Los Angeles to Reagan-National flights
San Francisco to O'Hare Intl flights
Los Angeles to Dallas/Fort Worth flights

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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$24Average$149FlexibilityNo cancel feeOn-time65%
FrontierCheapest$30Average$184FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$58Average$383FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$67Average$269FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$97Average$366FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$155Average$329FlexibilityNo cancel feeOn-time62%
DeltaCheapest$178Average$374FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$190Average$421FlexibilityNo cancel feeOn-time71%

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.