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Cheap flights from San Jose, California to Los Angeles from $67

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Jose, California to Los Angeles departing on 2/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from San Jose, California to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
8:57 pm - 1:11 pm
SJC
-
ONT
16h 14m
1 stop
Frontier Logo
7:17 pm - 5:44 pm
ONT
-
SJC
22h 27m
1 stop
$134Frontier
Sun, Mar 1 - Wed, Mar 4
Frontier Logo
8:57 pm - 1:11 pm
SJC
-
ONT
16h 14m
1 stop
Frontier Logo
10:03 pm - 6:07 pm
ONT
-
SJC
20h 04m
1 stop
$135Frontier
Sun, Mar 1 - Wed, Mar 11
Frontier Logo
8:57 pm - 5:48 pm
SJC
-
ONT
20h 51m
1 stop
Frontier Logo
3:24 pm - 8:40 am
ONT
-
SJC
17h 16m
1 stop
$156Frontier
Sun, Feb 22 - Sun, Mar 1
Frontier Logo
8:57 pm - 1:11 pm
SJC
-
ONT
16h 14m
1 stop
Frontier Logo
2:06 pm - 9:25 am
ONT
-
SJC
19h 19m
1 stop
$157Frontier
Sun, Mar 1 - Thu, Mar 12
Frontier Logo
10:34 am - 6:27 pm
SJC
-
ONT
7h 53m
1 stop
Frontier Logo
10:03 pm - 6:07 pm
ONT
-
SJC
20h 04m
1 stop
$160Frontier
Thu, Mar 5 - Wed, Mar 11
Southwest Logo
8:20 am - 9:35 am
SJC
-
ONT
1h 15mnonstop
Southwest Logo
4:40 pm - 6:00 pm
ONT
-
SJC
1h 20mnonstop
$169Southwest
Tue, Feb 24 - Tue, Mar 3
Southwest Logo
1:20 pm - 2:40 pm
SJC
-
ONT
1h 20mnonstop
Southwest Logo
5:55 am - 10:15 am
ONT
-
SJC
4h 20m
1 stop
$179Southwest
Tue, Feb 24 - Tue, Mar 3
Southwest Logo
1:20 pm - 2:40 pm
SJC
-
ONT
1h 20mnonstop
Southwest Logo
5:55 am - 12:30 pm
ONT
-
SJC
6h 35m
2 stops
$184Southwest
Tue, Feb 24 - Tue, Mar 3
Frontier Logo
10:34 am - 6:27 pm
SJC
-
ONT
7h 53m
1 stop
Frontier Logo
10:57 am - 6:07 pm
ONT
-
SJC
7h 10m
1 stop
$185Frontier
Thu, Mar 5 - Mon, Mar 9
Frontier Logo
9:35 am - 1:11 pm
SJC
-
ONT
27h 36m
1 stop
Frontier Logo
7:22 pm - 7:55 am
ONT
-
SJC
12h 33m
1 stop
$186Frontier
Mon, Feb 16 - Thu, Feb 19

Frontier flights from San Jose, California to Ontario

Our best Frontier deals on San Jose, California to Ontario flight tickets
Frontier
Mar 1
SJC8:57 pmSan Jose
16h 14m
1 stop
ONT1:11 pmOntario
Mar 4
ONT7:17 pmOntario
22h 27m
1 stop
SJC5:44 pmSan Jose
$134
Frontier
Mar 1
SJC8:57 pmSan Jose
16h 14m
1 stop
ONT1:11 pmOntario
Mar 11
ONT10:03 pmOntario
20h 04m
1 stop
SJC6:07 pmSan Jose
$135
Frontier
Feb 22
SJC8:57 pmSan Jose
20h 51m
1 stop
ONT5:48 pmOntario
Mar 1
ONT3:24 pmOntario
17h 16m
1 stop
SJC8:40 amSan Jose
$156

Southwest flights from San Jose, California to Ontario

Our best Southwest deals on San Jose, California to Ontario flight tickets
Southwest
Feb 24
SJC1:20 pmSan Jose
1h 20m
ONT2:40 pmOntario
Mar 3
ONT4:40 pmOntario
1h 20m
SJC6:00 pmSan Jose
$169
Southwest
Feb 24
SJC1:20 pmSan Jose
1h 20m
ONT2:40 pmOntario
Mar 3
ONT3:20 pmOntario
6h 35m
1 stop
SJC9:55 pmSan Jose
$179
Southwest
Feb 24
SJC8:20 amSan Jose
1h 15m
ONT9:35 amOntario
Mar 3
ONT3:15 pmOntario
6h 40m
2 stops
SJC9:55 pmSan Jose
$184

momondo Fare Finder

 
Customize your flight search to find flights from San Jose, California 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 January 27, 2026.
Use the filters below to find and compare flights from San Jose, California to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San JoseOntario

SJC - ONT

SJCONT

San Jose

Sun 3/1

8:57 pm-1:11 pm

1 stop16h 14m

Ontario

Wed 3/4

7:17 pm-5:44 pm

1 stop22h 27m

$134

San JoseOntario

SJC - ONT

SJCONT

San Jose

Sun 3/1

8:57 pm-1:11 pm

1 stop16h 14m

Ontario

Wed 3/11

10:03 pm-6:07 pm

1 stop20h 04m

$135

San JoseOntario

SJC - ONT

SJCONT

San Jose

Sun 2/22

8:57 pm-5:48 pm

1 stop20h 51m

Ontario

Sun 3/1

3:24 pm-8:40 am

1 stop17h 16m

$156

San JoseOntario

SJC - ONT

SJCONT

San Jose

Sun 3/1

8:57 pm-1:11 pm

1 stop16h 14m

Ontario

Thu 3/12

2:06 pm-9:25 am

1 stop19h 19m

$157

San JoseOntario

SJC - ONT

SJCONT

San Jose

Thu 3/5

10:34 am-6:27 pm

1 stop7h 53m

Ontario

Wed 3/11

10:03 pm-6:07 pm

1 stop20h 04m

$160

San JoseOntario

SJC - ONT

SJCONT

San Jose

Tue 2/24

8:20 am-9:35 am

Nonstop1h 15m

Ontario

Tue 3/3

4:40 pm-6:00 pm

Nonstop1h 20m

$169

San JoseOntario

SJC - ONT

SJCONT

San Jose

Tue 2/24

1:20 pm-2:40 pm

Nonstop1h 20m

Ontario

Tue 3/3

5:55 am-10:15 am

1 stop4h 20m

$179

San JoseOntario

SJC - ONT

SJCONT

San Jose

Tue 2/24

1:20 pm-2:40 pm

Nonstop1h 20m

Ontario

Tue 3/3

5:55 am-12:30 pm

2 stops6h 35m

$184

San JoseOntario

SJC - ONT

SJCONT

San Jose

Thu 3/5

10:34 am-6:27 pm

1 stop7h 53m

Ontario

Mon 3/9

10:57 am-6:07 pm

1 stop7h 10m

$185

San JoseOntario

SJC - ONT

SJCONT

San Jose

Mon 2/16

9:35 am-1:11 pm

1 stop27h 36m

Ontario

Thu 2/19

7:22 pm-7:55 am

1 stop12h 33m

$186

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Los Angeles from

How to get the cheapest flight ticket from San Jose, California 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, August is the cheapest month to fly from San Jose, California to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $244. If you aren’t able to travel during the month of August, then book flights to Ontario from San Jose, California during June instead. Flights to Ontario in June, while not as cheap as those in August, still average around $247.

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 Monday when prices can be found for as low as $259. This is often the case because there is less demand to fly during this day of the week. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from San Jose, California to Ontario for around $329.

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 San Jose, California to Ontario when you can find flight prices for as low as $265. 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 $285 on average. Flights to Ontario from San Jose, California in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest San Jose to Ontario flight route?

Fly from San Jose to Ontario for the best San Jose - 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 San Jose, California when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $269 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from San Jose, California for as low as $180 on momondo.

What cabin class options are available on San Jose to Ontario flights?

There is only 1 cabin class available to choose from on San Jose 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 San Jose, California to Ontario flights?

You could potentially save up to 20% on your flight if you consider stops on a San Jose, California to Ontario flight.

How have San Jose, California to Ontario flight prices changed over time?

As of January 2026, prices for San Jose, California to Ontario flights are approximately 47% cheaper when compared to flights at the same time last year.

When to book flights from San Jose, California to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from San Jose, California to Ontario according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap San Jose, California to Ontario (SJC to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Jose, California to Ontario

Best Price Found

$157

Fastest flight time

1h 15m

Direct flights

Every day

Airports in Ontario

1 airport
The best one-way flight to Ontario from San Jose, California in the past 72 hours is $157. The best round-trip flight deal from San Jose, California to Ontario found on momondo in the last 72 hours is $257.
The fastest flight from San Jose, California to Ontario takes 1h 15m
Direct flights go from San Jose, California to Ontario every day.
There is 1 airport in Ontario. From San Jose, California there are direct flights to Ontario (ONT).
Search flight deals

  • How far is San Jose to Ontario by plane?

    The distance between San Jose and Ontario is about 327.8 mi. By plane, this route typically takes 1h 15m.

  • When did momondo last update prices for flights from San Jose Airport to Ontario Airport?

    Prices for flights from San Jose Airport to Ontario Airport were last updated today.

  • How many operators does momondo search for flights from San Jose Airport to Ontario Airport?

  • How old do you have to be to fly from San Jose Airport 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 San Jose Airport to Ontario Airport.

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

    The required travel and health documents for your Ontario Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from San Jose, California to Ontario?

  • What is the most popular airline from San Jose, California to Ontario?

Best airlines flying from San Jose, California to Ontario

Compare and see reviews for airlines that fly from San Jose, California to Ontario with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $59Free CancellationRating
5.7
3,056 reviews
Search Frontier flights
United AirlinesPriceFrom $68Free CancellationRating
7.4
9,206 reviews
Search United Airlines flights
SouthwestPriceFrom $113Free CancellationRating
8.0
4,268 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $143Free CancellationRating
8.0
11,799 reviews
Search Alaska Airlines flights

  • Southwest Flights From San Jose, California to Ontario

    Southwest flight deals from San Jose, California to Ontario start from $113 round-trip. Over the 21 Southwest flights for this route in a normal week, average airfare is usually $276 round-trip - but some users have found much cheaper deals with momondo.

Why use momondo?

Why should I use momondo to find a flight deal from San Jose to Ontario?

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

Can I find flights from San Jose to Ontario with flexible booking policies on momondo?

Flights from San Jose to Ontario with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from San Jose to Ontario?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from San Jose to Ontario.

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

Of course. momondo tracks the price of San Jose to Ontario flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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