Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from North America to Los Angeles from $39

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from North America to Los Angeles departing on 8/11. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from North America to Los Angeles

Cheap round-trip flights

Frontier Logo
10:29 pm - 11:50 pmDEN-ONT
2h 21mnonstop
Frontier Logo
12:59 am - 4:20 amONT-DEN
2h 21mnonstop
$59Frontier
Find Deal
vie., oct. 24 - dom., oct. 26
Frontier Logo
6:29 pm - 7:54 pmDEN-ONT
2h 25mnonstop
Frontier Logo
8:59 pm - 12:26 amONT-DEN
2h 27mnonstop
$69Frontier
Find Deal
mié., sep. 24 - sáb., sep. 27
United Airlines Logo
7:10 pm - 8:33 pmSFO-ONT
1h 23mnonstop
United Airlines Logo
6:50 pm - 8:09 pmONT-SFO
1h 19mnonstop
$97United Airlines
Find Deal
jue., sep. 11 - lun., sep. 15
United Airlines Logo
10:45 am - 12:13 pmSFO-ONT
1h 28mnonstop
United Airlines Logo
1:42 pm - 3:01 pmONT-SFO
1h 19mnonstop
$124United Airlines
Find Deal
jue., ago. 21 - dom., ago. 24
Delta Logo
8:05 pm - 10:49 pmSEA-ONT
2h 44mnonstop
Delta Logo
11:48 am - 2:45 pmONT-SEA
2h 57mnonstop
$157Delta
Find Deal
mar., oct. 21 - mar., nov. 4
Southwest Logo
7:50 am - 9:05 amHOU-ONT
3h 15mnonstop
Southwest Logo
6:20 am - 11:30 amONT-HOU
3h 10mnonstop
$191Southwest
Find Deal
vie., sep. 26 - lun., sep. 29
Southwest Logo
7:25 pm - 10:45 pmHOU-ONT
5h 20m1 stop
Southwest Logo
6:20 am - 11:30 amONT-HOU
3h 10mnonstop
$201Southwest
Find Deal
vie., sep. 26 - lun., sep. 29
American Airlines Logo
8:25 pm - 12:07 amHOU-ONT
5h 42m1 stop
American Airlines Logo
11:59 pm - 8:20 amONT-HOU
6h 21m1 stop
$211American Airlines
Find Deal
vie., ago. 29 - dom., ago. 31
American Airlines Logo
10:14 am - 1:39 pmHOU-ONT
5h 25m1 stop
American Airlines Logo
11:59 pm - 8:34 amONT-HOU
6h 35m1 stop
$221American Airlines
Find Deal
mar., ago. 26 - mar., sep. 2
Delta Logo
1:05 pm - 7:11 pmHOU-ONT
8h 06m1 stop
Delta Logo
11:45 am - 10:31 pmONT-HOU
8h 46m1 stop
$237Delta
Find Deal
vie., sep. 5 - mar., sep. 9

Frontier flights from North America to Ontario

Our best Frontier deals on North America to Ontario flight tickets
Frontier
Oct 24
DEN10:29 pmDenver Intl
2h 21m
ONT11:50 pmOntario
Oct 26
ONT12:59 amOntario
2h 21m
DEN4:20 amDenver Intl
$59
Find similar
Frontier
Sep 24
DEN6:29 pmDenver Intl
2h 25m
ONT7:54 pmOntario
Sep 27
ONT8:59 pmOntario
2h 27m
DEN12:26 amDenver Intl
$69
Find similar
Frontier
Oct 24
DEN10:29 pmDenver Intl
2h 21m
ONT11:50 pmOntario
Oct 27
ONT6:11 pmOntario
2h 22m
DEN9:33 pmDenver Intl
$81
Find similar

Delta flights from North America to Ontario

Our best Delta deals on North America to Ontario flight tickets
Delta
Oct 21
SEA8:05 pmSeattle/Tacoma Intl
2h 44m
ONT10:49 pmOntario
Nov 4
ONT11:48 amOntario
2h 57m
SEA2:45 pmSeattle/Tacoma Intl
$157
Find similar
Delta
Sep 5
HOU1:05 pmHouston Hobby
8h 06m
1 stop
ONT7:11 pmOntario
Sep 9
ONT11:45 amOntario
8h 46m
1 stop
HOU10:31 pmHouston Hobby
$237
Find similar
Delta
Aug 30
IAD6:00 amWashington, D.C. Dulles Intl
7h 20m
1 stop
ONT10:20 amOntario
Sep 6
ONT7:05 amOntario
8h 44m
1 stop
IAD6:49 pmWashington, D.C. Dulles Intl
$277
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from North America to Ontario 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 julio 31, 2025.
Use the filters below to find and compare flights from North America to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DenverOntario

DEN - ONT

DENONT

Denver Intl

vie. 10/24

10:29 pm-11:50 pm

Nonstop2h 21m

Ontario

dom. 10/26

12:59 am-4:20 am

Nonstop2h 21m

$59

DenverOntario

DEN - ONT

DENONT

Denver Intl

mié. 9/24

6:29 pm-7:54 pm

Nonstop2h 25m

Ontario

sáb. 9/27

8:59 pm-12:26 am

Nonstop2h 27m

$69

San FranciscoOntario

SFO - ONT

SFOONT

San Francisco

jue. 9/11

7:10 pm-8:33 pm

Nonstop1h 23m

Ontario

lun. 9/15

6:50 pm-8:09 pm

Nonstop1h 19m

$97

San FranciscoOntario

SFO - ONT

SFOONT

San Francisco

jue. 8/21

10:45 am-12:13 pm

Nonstop1h 28m

Ontario

dom. 8/24

1:42 pm-3:01 pm

Nonstop1h 19m

$124

SeattleOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

mar. 10/21

8:05 pm-10:49 pm

Nonstop2h 44m

Ontario

mar. 11/4

11:48 am-2:45 pm

Nonstop2h 57m

$157

HoustonOntario

HOU - ONT

HOUONT

Houston Hobby

vie. 9/26

7:50 am-9:05 am

Nonstop3h 15m

Ontario

lun. 9/29

6:20 am-11:30 am

Nonstop3h 10m

$191

HoustonOntario

HOU - ONT

HOUONT

Houston Hobby

vie. 9/26

7:25 pm-10:45 pm

1 stop5h 20m

Ontario

lun. 9/29

6:20 am-11:30 am

Nonstop3h 10m

$201

HoustonOntario

HOU - ONT

HOUONT

Houston Hobby

vie. 8/29

8:25 pm-12:07 am

1 stop5h 42m

Ontario

dom. 8/31

11:59 pm-8:20 am

1 stop6h 21m

$211

HoustonOntario

HOU - ONT

HOUONT

Houston Hobby

mar. 8/26

10:14 am-1:39 pm

1 stop5h 25m

Ontario

mar. 9/2

11:59 pm-8:34 am

1 stop6h 35m

$221

HoustonOntario

HOU - ONT

HOUONT

Houston Hobby

vie. 9/5

1:05 pm-7:11 pm

1 stop8h 06m

Ontario

mar. 9/9

11:45 am-10:31 pm

1 stop8h 46m

$237

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Los Angeles from

How to get the cheapest flight ticket from North America to Ontario

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 Ontario?

In general, September is the cheapest month to fly from North America to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $287. If you aren’t able to travel during the month of September, then book flights to Ontario from North America during July instead. Flights to Ontario in July, while not as cheap as those in September, still average around $297.

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Friday when prices can be found for as low as $301. This is often the case because there is less demand to fly during this day of the week. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from North America to Ontario for around $376.

What is the cheapest time of day to depart on your flight to Ontario?

In the evening is the cheapest time of day to fly from North America to Ontario when you can find flight prices for as low as $317. Flying to Ontario in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $362 on average. Flights to Ontario from North America in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest North America to Ontario flight route?

Fly from San Francisco to Ontario for the best North America - Ontario flight prices

How far in advance should I book a flight to Ontario?

You are more likely to see cheaper flights to Ontario from North America when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $358 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from North America for as low as $239 on momondo.

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

There are 4 cabin classes available to choose from on North America to Ontario 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 North America to Ontario flights?

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

Cheap North America to Ontario flight deals and tips

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

Best Price Found

$39

Fastest flight time

1h 21m

Direct flights

Every day

Airports in Ontario

1 airport
The best one-way flight to Ontario from North America in the past 72 hours is $39. The best round-trip flight deal from North America to Ontario found on momondo in the last 72 hours is $59.
The fastest flight from North America to Ontario takes 1h 21m
Direct flights go from North America to Ontario every day.
There is 1 airport near Ontario: Ontario (ONT)
Search flight deals

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

    Prices for flights from North America to Ontario Airport refresh daily.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from North America to Ontario Airport.

  • What documentation or ID do you need to fly to Ontario Airport?

    The travel and health documents required for your trip to Ontario Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

Best airlines flying from North America to Ontario

Compare and see reviews for airlines that fly from North America to Ontario with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $23Free CancellationRating
6.3
8,049 reviews
Search Spirit Airlines flights
FrontierPriceFrom $38Free CancellationRating
5.9
3,239 reviews
Search Frontier flights
United AirlinesPriceFrom $58Free CancellationRating
7.4
8,900 reviews
Search United Airlines flights
DeltaPriceFrom $58Free CancellationRating
8.0
7,981 reviews
Search Delta flights
Alaska AirlinesPriceFrom $59Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $97Free CancellationRating
8.0
4,246 reviews
Search Southwest flights
JetBluePriceFrom $176Free CancellationRating
7.2
2,914 reviews
Search JetBlue flights
American AirlinesPriceFrom $186Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from North America to Ontario. momondo saves you time and could save you money on your trip.

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

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

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Ontario from North America.

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

Yes momondo offers price alerts on flights to Ontario from North America. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
mar. 8/5
mar. 8/12
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States