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Cheap flights from Ontario to North America from $35

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 1/30. 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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Find the cheapest flights from Ontario to North America

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
3:21 pm - 4:27 pm
ONT
-
LAS
1h 06mnonstop
Frontier Logo
4:45 pm - 5:54 pm
LAS
-
ONT
1h 09mnonstop
$60Frontier
sáb., ene. 10 - mar., ene. 13
Frontier Logo
7:19 pm - 8:26 pm
ONT
-
LAS
1h 07mnonstop
Frontier Logo
6:30 am - 7:36 am
LAS
-
ONT
1h 06mnonstop
$61Frontier
dom., ene. 11 - lun., ene. 12
Delta Logo
5:10 pm - 12:09 am
ONT
-
SEA
6h 59m1 stop
Delta Logo
4:55 pm - 11:58 pm
SEA
-
ONT
7h 03m1 stop
$119Delta
mié., ene. 21 - mié., ene. 28
Alaska Airlines Logo
6:14 am - 9:09 am
ONT
-
SEA
2h 55mnonstop
Alaska Airlines Logo
8:56 pm - 11:32 pm
SEA
-
ONT
2h 36mnonstop
$129Alaska Airlines
jue., feb. 19 - lun., feb. 23
Alaska Airlines Logo
6:14 am - 9:09 am
ONT
-
SEA
2h 55mnonstop
Alaska Airlines Logo
7:00 am - 9:39 am
SEA
-
ONT
2h 39mnonstop
$138Alaska Airlines
mar., mar. 17 - mié., mar. 25
Delta Logo
7:30 am - 10:36 am
ONT
-
SEA
3h 06mnonstop
Delta Logo
8:07 pm - 10:51 pm
SEA
-
ONT
2h 44mnonstop
$139Delta
mar., ene. 13 - mié., ene. 14
American Airlines Logo
11:59 pm - 9:44 am
ONT
-
HOU
7h 45m1 stop
American Airlines Logo
10:15 am - 6:39 pm
HOU
-
ONT
10h 24m1 stop
$329American Airlines
lun., feb. 16 - mié., feb. 18
Southwest Logo
1:50 pm - 6:50 pm
ONT
-
HOU
3h 00mnonstop
Southwest Logo
9:00 pm - 10:25 pm
HOU
-
ONT
3h 25mnonstop
$333Southwest
jue., abr. 30 - mar., may. 5
Southwest Logo
1:50 pm - 6:50 pm
ONT
-
HOU
3h 00mnonstop
Southwest Logo
1:35 pm - 5:50 pm
HOU
-
ONT
6h 15m1 stop
$343Southwest
jue., abr. 30 - sáb., may. 9
American Airlines Logo
7:16 am - 6:06 pm
ONT
-
HOU
8h 50m1 stop
American Airlines Logo
6:00 am - 10:08 am
HOU
-
ONT
6h 08m1 stop
$346American Airlines
sáb., ene. 17 - sáb., ene. 24

Frontier flights from Ontario to North America

Our best Frontier deals on Ontario to North America flight tickets
Frontier
Jan 10
ONT3:21 pmOntario
1h 06m
LAS4:27 pmLas Vegas Harry Reid Intl
Jan 13
LAS4:45 pmLas Vegas Harry Reid Intl
1h 09m
ONT5:54 pmOntario
$60
Find similar
Frontier
Jan 11
ONT7:19 pmOntario
1h 07m
LAS8:26 pmLas Vegas Harry Reid Intl
Jan 12
LAS6:30 amLas Vegas Harry Reid Intl
1h 06m
ONT7:36 amOntario
$61
Find similar
Frontier
Jan 31
ONT3:04 pmOntario
1h 12m
LAS4:16 pmLas Vegas Harry Reid Intl
Feb 2
LAS6:02 pmLas Vegas Harry Reid Intl
1h 08m
ONT7:10 pmOntario
$62
Find similar

American Airlines flights from Ontario to North America

Our best American Airlines deals on Ontario to North America flight tickets
American Airlines
Feb 17
ONT3:19 pmOntario
3h 00m
DFW8:19 pmDallas/Fort Worth
Feb 28
DFW3:00 pmDallas/Fort Worth
3h 24m
ONT4:24 pmOntario
$179
Find similar
American Airlines
Jan 14
ONT6:00 amOntario
8h 17m
1 stop
JFK5:17 pmNew York John F Kennedy Intl
Jan 21
JFK7:55 amNew York John F Kennedy Intl
9h 23m
1 stop
ONT2:18 pmOntario
$187
Find similar
American Airlines
Jan 17
ONT6:27 amOntario
1h 21m
PHX8:48 amPhoenix Sky Harbor Intl
Jan 18
PHX8:48 amPhoenix Sky Harbor Intl
1h 20m
ONT9:08 amOntario
$191
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 diciembre 23, 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

sáb. 1/10

3:21 pm-4:27 pm

Nonstop1h 06m

Las Vegas Harry Reid Intl

mar. 1/13

4:45 pm-5:54 pm

Nonstop1h 09m

$60

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

dom. 1/11

7:19 pm-8:26 pm

Nonstop1h 07m

Las Vegas Harry Reid Intl

lun. 1/12

6:30 am-7:36 am

Nonstop1h 06m

$61

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

mié. 1/21

5:10 pm-12:09 am

1 stop6h 59m

Seattle/Tacoma Intl

mié. 1/28

4:55 pm-11:58 pm

1 stop7h 03m

$119

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

jue. 2/19

6:14 am-9:09 am

Nonstop2h 55m

Seattle/Tacoma Intl

lun. 2/23

8:56 pm-11:32 pm

Nonstop2h 36m

$129

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

mar. 3/17

6:14 am-9:09 am

Nonstop2h 55m

Seattle/Tacoma Intl

mié. 3/25

7:00 am-9:39 am

Nonstop2h 39m

$138

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

mar. 1/13

7:30 am-10:36 am

Nonstop3h 06m

Seattle/Tacoma Intl

mié. 1/14

8:07 pm-10:51 pm

Nonstop2h 44m

$139

OntarioHouston

ONT - HOU

ONTHOU

Ontario

lun. 2/16

11:59 pm-9:44 am

1 stop7h 45m

Houston Hobby

mié. 2/18

10:15 am-6:39 pm

1 stop10h 24m

$329

OntarioHouston

ONT - HOU

ONTHOU

Ontario

jue. 4/30

1:50 pm-6:50 pm

Nonstop3h 00m

Houston Hobby

mar. 5/5

9:00 pm-10:25 pm

Nonstop3h 25m

$333

OntarioHouston

ONT - HOU

ONTHOU

Ontario

jue. 4/30

1:50 pm-6:50 pm

Nonstop3h 00m

Houston Hobby

sáb. 5/9

1:35 pm-5:50 pm

1 stop6h 15m

$343

OntarioHouston

ONT - HOU

ONTHOU

Ontario

sáb. 1/17

7:16 am-6:06 pm

1 stop8h 50m

Houston Hobby

sáb. 1/24

6:00 am-10:08 am

1 stop6h 08m

$346

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 $257. 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 time of day to depart on your flight to North America?

The cheapest time of day to fly to North America is in the afternoon when flights can be purchased for as low as $309. Try not to purchase tickets in the evening because they tend to be around $359. Of course, these prices can vary depending on the time of year and what airport you fly to.

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 $346 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 $279 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 $115.
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
8,194 reviews
Search Spirit Airlines flights
FrontierPriceFrom $35Free CancellationRating
5.8
3,073 reviews
Search Frontier flights
United AirlinesPriceFrom $58Free CancellationRating
7.4
9,109 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $67Free CancellationRating
8.0
11,517 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $97Free CancellationRating
8.0
4,256 reviews
Search Southwest flights
DeltaPriceFrom $178Free CancellationRating
7.9
8,015 reviews
Search Delta flights
JetBluePriceFrom $223Free CancellationRating
7.2
2,898 reviews
Search JetBlue flights
VivaPriceFrom $228Free CancellationRating
7.0
799 reviews
Search Viva flights
American AirlinesPriceFrom $242Free CancellationRating
7.2
11,050 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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1 adult
jue. 1/22
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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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