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Cheap flights from Ontario to North America from $32

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to North America departing on 2/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

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Frontier Logo
8:48 pm - 9:56 pm
ONT
-
LAS
1h 08mnonstop
Frontier Logo
6:06 pm - 7:14 pm
LAS
-
ONT
1h 08mnonstop
$60Frontier
Fri, Feb 6 - Sat, Feb 14
Frontier Logo
11:04 am - 12:17 pm
ONT
-
LAS
1h 13mnonstop
Frontier Logo
12:21 pm - 1:32 pm
LAS
-
ONT
1h 11mnonstop
$61Frontier
Thu, Jan 22 - Fri, Jan 23
Alaska Airlines Logo
4:03 pm - 6:54 pm
ONT
-
SEA
2h 51mnonstop
Alaska Airlines Logo
6:00 pm - 8:36 pm
SEA
-
ONT
2h 36mnonstop
$119Alaska Airlines
Thu, Jan 29 - Wed, Feb 4
Alaska Airlines Logo
4:02 pm - 6:52 pm
ONT
-
SEA
2h 50mnonstop
Alaska Airlines Logo
8:56 pm - 11:32 pm
SEA
-
ONT
2h 36mnonstop
$138Alaska Airlines
Sat, Mar 7 - Sat, Mar 14
Delta Logo
3:30 pm - 6:33 pm
ONT
-
SEA
3h 03mnonstop
Delta Logo
7:50 pm - 10:33 pm
SEA
-
ONT
2h 43mnonstop
$139Delta
Mon, Mar 2 - Mon, Mar 9
Delta Logo
3:30 pm - 6:33 pm
ONT
-
SEA
3h 03mnonstop
Delta Logo
5:30 am - 12:23 pm
SEA
-
ONT
6h 53m1 stop
$149Delta
Mon, Mar 2 - Thu, Mar 12
Southwest Logo
8:55 am - 5:50 pm
ONT
-
SEA
8h 55m1 stop
Southwest Logo
9:30 am - 2:20 pm
SEA
-
ONT
4h 50m1 stop
$151Southwest
Fri, Jan 23 - Mon, Jan 26
American Airlines Logo
6:22 am - 5:00 pm
ONT
-
JFK
7h 38m1 stop
American Airlines Logo
8:25 am - 4:05 pm
JFK
-
ONT
10h 40m1 stop
$187American Airlines
Tue, Jan 27 - Tue, Feb 3
American Airlines Logo
9:59 am - 10:23 pm
ONT
-
JFK
9h 24m2 stops
American Airlines Logo
8:25 am - 4:05 pm
JFK
-
ONT
10h 40m1 stop
$192American Airlines
Tue, Jan 27 - Tue, Feb 3
Southwest Logo
5:15 am - 10:15 am
ONT
-
HOU
3h 00mnonstop
Southwest Logo
3:35 pm - 5:10 pm
HOU
-
ONT
3h 35mnonstop
$333Southwest
Thu, Jan 29 - Wed, Feb 4

United Airlines flights from Ontario to North America

Our best United Airlines deals on Ontario to North America flight tickets
United Airlines
May 1
ONT6:00 amOntario
4h 39m
1 stop
SEA10:39 amSeattle/Tacoma Intl
May 6
SEA5:45 pmSeattle/Tacoma Intl
5h 07m
1 stop
ONT10:52 pmOntario
$182
Find similar
United Airlines
Jan 20
ONT6:00 amOntario
1h 32m
SFO7:32 amSan Francisco
Jan 24
SFO4:20 pmSan Francisco
1h 31m
ONT5:51 pmOntario
$192
Find similar
United Airlines
Jan 12
ONT6:39 pmOntario
1h 31m
SFO8:10 pmSan Francisco
Jan 19
SFO9:30 pmSan Francisco
1h 23m
ONT10:53 pmOntario
$287
Find similar

Frontier flights from Ontario to North America

Our best Frontier deals on Ontario to North America flight tickets
Frontier
Feb 6
ONT8:48 pmOntario
1h 08m
LAS9:56 pmLas Vegas Harry Reid Intl
Feb 14
LAS6:06 pmLas Vegas Harry Reid Intl
1h 08m
ONT7:14 pmOntario
$60
Find similar
Frontier
Jan 22
ONT11:04 amOntario
1h 13m
LAS12:17 pmLas Vegas Harry Reid Intl
Jan 23
LAS12:21 pmLas Vegas Harry Reid Intl
1h 11m
ONT1:32 pmOntario
$61
Find similar
Frontier
Jan 24
ONT7:35 pmOntario
1h 09m
LAS8:44 pmLas Vegas Harry Reid Intl
Mar 2
LAS12:00 pmLas Vegas Harry Reid Intl
1h 11m
ONT1:11 pmOntario
$62
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated December 31, 2025.
Use the filters below to find and compare flights from Ontario to North America that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

Fri 2/6

8:48 pm-9:56 pm

Nonstop1h 08m

Las Vegas Harry Reid Intl

Sat 2/14

6:06 pm-7:14 pm

Nonstop1h 08m

$60

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

Thu 1/22

11:04 am-12:17 pm

Nonstop1h 13m

Las Vegas Harry Reid Intl

Fri 1/23

12:21 pm-1:32 pm

Nonstop1h 11m

$61

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Thu 1/29

4:03 pm-6:54 pm

Nonstop2h 51m

Seattle/Tacoma Intl

Wed 2/4

6:00 pm-8:36 pm

Nonstop2h 36m

$119

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Sat 3/7

4:02 pm-6:52 pm

Nonstop2h 50m

Seattle/Tacoma Intl

Sat 3/14

8:56 pm-11:32 pm

Nonstop2h 36m

$138

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Mon 3/2

3:30 pm-6:33 pm

Nonstop3h 03m

Seattle/Tacoma Intl

Mon 3/9

7:50 pm-10:33 pm

Nonstop2h 43m

$139

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Mon 3/2

3:30 pm-6:33 pm

Nonstop3h 03m

Seattle/Tacoma Intl

Thu 3/12

5:30 am-12:23 pm

1 stop6h 53m

$149

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Fri 1/23

8:55 am-5:50 pm

1 stop8h 55m

Seattle/Tacoma Intl

Mon 1/26

9:30 am-2:20 pm

1 stop4h 50m

$151

OntarioNew York

ONT - JFK

ONTJFK

Ontario

Tue 1/27

6:22 am-5:00 pm

1 stop7h 38m

New York John F Kennedy Intl

Tue 2/3

8:25 am-4:05 pm

1 stop10h 40m

$187

OntarioNew York

ONT - JFK

ONTJFK

Ontario

Tue 1/27

9:59 am-10:23 pm

2 stops9h 24m

New York John F Kennedy Intl

Tue 2/3

8:25 am-4:05 pm

1 stop10h 40m

$192

OntarioHouston

ONT - HOU

ONTHOU

Ontario

Thu 1/29

5:15 am-10:15 am

Nonstop3h 00m

Houston Hobby

Wed 2/4

3:35 pm-5:10 pm

Nonstop3h 35m

$333

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Ontario to North America

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to North America?

The month of January is, on average, the cheapest month to fly to North America from Ontario, with most prices found around $256. If you are unable to visit North America during the month of January, then departing from Ontario during the month February is also very affordable. Most momondo users find prices during this month for around $286.

What is the cheapest day to depart on your flight to North America?

The cheapest day to depart from Ontario to North America is on a Saturday. Travelers who choose to depart for North America on a Saturday will often find tickets for as low as $335. Be sure to avoid booking your departure on a Wednesday as prices are generally higher than usual. According to our data, the average ticket price to North America on Wednesday is $387.

What is the cheapest Ontario to North America flight route?

Fly from Ontario to Las Vegas Harry Reid Intl for the best Ontario - North America flight prices

How far in advance should I book a flight to North America?

You are more likely to see cheaper flights to North America from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to North America for around $347 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to North America from Ontario for as low as $275 on momondo.

What cabin class options are available on Ontario to North America flights?

There are 4 cabin classes available to choose from on Ontario to North America flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Ontario to North America flights?

No. A direct flight is the cheapest option for a flight between Ontario to North America.

Cheap Ontario to North America flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to North America

Best Price Found

$42

Direct flights

Every day

Airports in North America

5,162 airports
The best one-way flight to North America from Ontario in the past 72 hours is $42. The best round-trip flight deal from Ontario to North America found on momondo in the last 72 hours is $104.
Direct flights go from Ontario to North America every day.
There are 5,162 airports in North America. From Ontario there are direct flights to Las Vegas Harry Reid Intl (LAS).
Search flight deals

  • When did momondo last update prices for flights from Ontario Airport to North America?

    Prices for flights from Ontario Airport to North America are updated daily.

  • How many operators does momondo search for flights from Ontario Airport to North America?

  • How old do you have to be to fly from Ontario Airport to North America?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario Airport to North America.

  • What documentation or ID do you need to fly to North America?

    The travel and health documents you'll need for your trip to North America may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at North America. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Ontario to North America?

Best airlines flying from Ontario to North America

Compare and see reviews for airlines that fly from Ontario to North America with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $24Free CancellationRating
6.3
8,248 reviews
Search Spirit Airlines flights
FrontierPriceFrom $35Free CancellationRating
5.7
3,067 reviews
Search Frontier flights
United AirlinesPriceFrom $58Free CancellationRating
7.4
9,123 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $67Free CancellationRating
8.0
11,589 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $97Free CancellationRating
8.0
4,250 reviews
Search Southwest flights
DeltaPriceFrom $178Free CancellationRating
7.9
8,012 reviews
Search Delta flights
JetBluePriceFrom $223Free CancellationRating
7.2
2,901 reviews
Search JetBlue flights
VivaPriceFrom $228Free CancellationRating
7.0
806 reviews
Search Viva flights
American AirlinesPriceFrom $242Free CancellationRating
7.2
11,069 reviews
Search American Airlines flights
VolarisPriceFrom $273Free CancellationRating
6.6
1,165 reviews
Search Volaris flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to North America?

It is quick and easy to find Ontario to North America flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to North America that suits you.

Can I find flights from Ontario to North America with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to North America from Ontario with this policy.

How can momondo help me find flights from Ontario to North America?

momondo provides multiple filters to help you find the best flight to North America from Ontario. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Ontario to North America right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Ontario to North America flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Find better results for your trip to North America

Popular cities in North America

Popular flights according to clicks in the last 7 days on momondo
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Flights to Las Vegasfrom $39
Flights to Washington, D.C.from $57
Flights to Bostonfrom $51
Flights to Atlantafrom $43
Flights to Dallasfrom $51
Flights to Seattlefrom $57