How many flights depart from Ontario to San Jose, California on average per day?

The number of flights available between Ontario and San Jose, California is 1 per day as of November 2026. The most frequent departure time is 11:00, with 57% of daily flights leaving at midday.

What is the cheapest airline that flies from Ontario to San Jose?

Southwest is the most popular carrier operating from Ontario to San Jose

How many flights depart from Ontario to San Jose, California on average per week?

As of November 2026, 8 flights take off from Ontario and land in San Jose, California each week. The most common flight departure day for this route is Tue, with 50% of weekly flights taking off on this day.

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

Prices for flights from Ontario Airport to San Jose Airport are refreshed on a daily basis.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario Airport to San Jose Airport.

What documentation or ID do you need to fly to San Jose Airport?

The required travel and health documents for your San Jose 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 licence and a passport valid for six months after your intended arrival at San Jose Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

R972 Cheap Flights from Ontario to San Jose, California in 2026/27

Find the cheapest flights from Ontario to San Jose

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One-way

Last minute

Direct

Cheap return flights

Enter your travel dates to find the best prices.

10:25 - 11:40ONT Ontario-SJC San Jose

1h 15mdirect

16:35 - 17:50SJC San Jose-ONT Ontario

1h 15mdirect

R1 928Southwest

Thu, Dec 3 - Mon, Dec 7

9:30 - 10:50ONT Ontario-SJC San Jose

1h 20mdirect

7:35 - 11:00SJC San Jose-ONT Ontario

3h 25m1 stop Las Vegas Harry Reid Intl

R2 027Southwest

Fri, Dec 18 - Mon, Jan 18

12:50 - 18:45ONT Ontario-SJC San Jose

5h 55m1 stop Phoenix Sky Harbor Intl

8:30 - 9:45SJC San Jose-ONT Ontario

1h 15mdirect

R2 093Southwest

Thu, Dec 3 - Fri, Dec 4

6:45 - 13:35ONT Ontario-SJC San Jose

6h 50m1 stop Phoenix Sky Harbor Intl

7:35 - 11:00SJC San Jose-ONT Ontario

3h 25m1 stop Las Vegas Harry Reid Intl

R2 175Southwest

Fri, Dec 18 - Mon, Jan 18

21:35 - 7:40ONT Ontario-SJC San Jose

10h 05m1 stop Las Vegas Harry Reid Intl

11:20 - 12:40SJC San Jose-ONT Ontario

1h 20mdirect

R2 192Southwest

Wed, Nov 25 - Fri, Nov 27

8:40 - 14:45ONT Ontario-SJC San Jose

6h 05m1 stop Las Vegas Harry Reid Intl

9:05 - 16:10SJC San Jose-ONT Ontario

7h 05m1 stop Phoenix Sky Harbor Intl

R2 258Southwest

Thu, Dec 3 - Fri, Dec 4

17:00 - 21:10ONT Ontario-SJC San Jose

4h 10m1 stop Las Vegas Harry Reid Intl

14:35 - 19:55SJC San Jose-ONT Ontario

5h 20m2 stops Los Angeles Phoenix Sky Harbor Intl

R2 340Southwest

Wed, Dec 2 - Wed, Dec 9

5:45 - 12:00ONT Ontario-SJC San Jose

6h 15m2 stops Las Vegas Harry Reid Intl Los Angeles

14:35 - 19:55SJC San Jose-ONT Ontario

5h 20m2 stops Los Angeles Phoenix Sky Harbor Intl

R2 422Southwest

Wed, Dec 2 - Wed, Dec 9

15:05 - 16:20ONT Ontario-SJC San Jose

1h 15mdirect

11:55 - 13:15SJC San Jose-ONT Ontario

1h 20mdirect

R2 538Southwest

Wed, Dec 2 - Fri, Dec 4

17:00 - 23:35ONT Ontario-SJC San Jose

6h 35m2 stops Phoenix Sky Harbor Intl San Diego

14:30 - 19:45SJC San Jose-ONT Ontario

5h 15m2 stops Santa Ana J. Wayne/Orange Cnty Phoenix Sky Harbor Intl

R3 032Southwest

Fri, Jan 15 - Mon, Feb 1

Cheap last-minute flights

Enter your travel dates to find the best prices.

10:35 - 11:50ONT Ontario-SJC San Jose

1h 15mdirect

6:30 - 7:45SJC San Jose-ONT Ontario

1h 15mdirect

R7 350Southwest

Mon, Nov 9 - Fri, Dec 11

12:10 - 17:55ONT Ontario-SJC San Jose

5h 45m2 stops Phoenix Sky Harbor Intl San Diego

6:30 - 7:45SJC San Jose-ONT Ontario

1h 15mdirect

R7 432Southwest

Mon, Nov 9 - Fri, Dec 11

5:00 - 11:35ONT Ontario-SJC San Jose

6h 35m2 stops Phoenix Sky Harbor Intl Las Vegas Harry Reid Intl

6:20 - 10:50SJC San Jose-ONT Ontario

4h 30m1 stop Phoenix Sky Harbor Intl

R7 597Southwest

Mon, Nov 9 - Fri, Dec 11

6:30 - 12:08ONT Ontario-SJC San Jose

5h 38m1 stop Phoenix Sky Harbor Intl

12:58 - 19:09SJC San Jose-ONT Ontario

6h 11m1 stop Phoenix Sky Harbor Intl

R9 130American Airlines

Mon, Nov 9 - Sun, Nov 15

16:00 - 22:25ONT Ontario-SJC San Jose

6h 25m2 stops Phoenix Sky Harbor Intl San Diego

17:50 - 23:40SJC San Jose-ONT Ontario

5h 50m2 stops San Diego Las Vegas Harry Reid Intl

R9 838Southwest

Mon, Nov 9 - Fri, Dec 11

13:29 - 21:08ONT Ontario-SJC San Jose

7h 39m1 stop Denver Intl

13:00 - 20:51SJC San Jose-ONT Ontario

7h 51m1 stop Denver Intl

R10 497United Airlines

Tue, Nov 10 - Wed, Nov 18

18:30 - 19:50ONT Ontario-SJC San Jose

1h 20mdirect

19:30 - 20:55SJC San Jose-ONT Ontario

1h 25mdirect

R10 514Southwest

Wed, Nov 11 - Fri, Nov 13

15:20 - 19:50ONT Ontario-SJC San Jose

4h 30m1 stop Las Vegas Harry Reid Intl

16:55 - 18:10SJC San Jose-ONT Ontario

1h 15mdirect

R10 530Southwest

Wed, Nov 11 - Fri, Nov 13

8:40 - 15:00ONT Ontario-SJC San Jose

6h 20m1 stop Phoenix Sky Harbor Intl

7:30 - 15:25SJC San Jose-ONT Ontario

7h 55m2 stops Santa Ana J. Wayne/Orange Cnty Phoenix Sky Harbor Intl

R10 629Southwest

Wed, Nov 11 - Fri, Nov 13

5:55 - 11:50ONT Ontario-SJC San Jose

5h 55m2 stops Phoenix Sky Harbor Intl San Diego

17:00 - 22:00SJC San Jose-ONT Ontario

5h 00m2 stops San Diego Las Vegas Harry Reid Intl

R10 712Southwest

Wed, Nov 11 - Fri, Nov 13

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Southwest flights from Ontario to San Jose, California

Our best Southwest deals on Ontario to San Jose, California flight tickets

Southwest

Dec 3

ONT10:25Ontario

1h 15m

SJC11:40San Jose

Dec 7

SJC16:35San Jose

1h 15m

ONT17:50Ontario

R1 928

Southwest

Dec 18

ONT9:30Ontario

1h 20m

SJC10:50San Jose

Jan 18

SJC7:35San Jose

3h 25m

1 stop

ONT11:00Ontario

R2 027

Southwest

Dec 3

ONT12:50Ontario

5h 55m

1 stop

SJC18:45San Jose

Dec 4

SJC8:30San Jose

1h 15m

ONT9:45Ontario

R2 093

American Airlines flights from Ontario to San Jose, California

Our best American Airlines deals on Ontario to San Jose, California flight tickets

American Airlines

Nov 18

ONT9:50Ontario

5h 54m

1 stop

SJC15:44San Jose

Nov 20

SJC6:00San Jose

6h 45m

1 stop

ONT12:45Ontario

R8 652

American Airlines

Nov 9

ONT6:30Ontario

5h 38m

1 stop

SJC12:08San Jose

Nov 15

SJC12:58San Jose

6h 11m

1 stop

ONT19:09Ontario

R9 130

American Airlines

Nov 16

ONT16:51Ontario

4h 43m

1 stop

SJC21:34San Jose

Nov 19

SJC6:00San Jose

6h 45m

1 stop

ONT12:45Ontario

R9 262

momondo Fare Finder

Use the filters below to find and compare flights from Ontario to San Jose, California that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

OntarioSan Jose

ONT Ontario - SJC San Jose

ONTSJC

Ontario

Thu 3/12

10:25-11:40

Nonstop1h 15m

San Jose

Mon 7/12

16:35-17:50

Nonstop1h 15m

R1 928

OntarioSan Jose

ONT Ontario - SJC San Jose

ONTSJC

Ontario

Fri 18/12

9:30-10:50

Nonstop1h 20m

San Jose

Mon 18/1

7:35-11:00

1 stop3h 25m

R2 027

OntarioSan Jose

ONT Ontario - SJC San Jose

ONTSJC

Ontario

Thu 3/12

12:50-18:45

1 stop5h 55m

San Jose

Fri 4/12

8:30-9:45

Nonstop1h 15m

R2 093

OntarioSan Jose

ONT Ontario - SJC San Jose

ONTSJC

Ontario

Fri 18/12

6:45-13:35

1 stop6h 50m

San Jose

Mon 18/1

7:35-11:00

1 stop3h 25m

R2 175

OntarioSan Jose

ONT Ontario - SJC San Jose

ONTSJC

Ontario

Wed 25/11

21:35-7:40

1 stop10h 05m

San Jose

Fri 27/11

11:20-12:40

Nonstop1h 20m

R2 192

OntarioSan Jose

ONT Ontario - SJC San Jose

ONTSJC

Ontario

Thu 3/12

8:40-14:45

1 stop6h 05m

San Jose

Fri 4/12

9:05-16:10

1 stop7h 05m

R2 258

OntarioSan Jose

ONT Ontario - SJC San Jose

ONTSJC

Ontario

Wed 2/12

17:00-21:10

1 stop4h 10m

San Jose

Wed 9/12

14:35-19:55

2 stops5h 20m

R2 340

OntarioSan Jose

ONT Ontario - SJC San Jose

ONTSJC

Ontario

Wed 2/12

5:45-12:00

2 stops6h 15m

San Jose

Wed 9/12

14:35-19:55

2 stops5h 20m

R2 422

OntarioSan Jose

ONT Ontario - SJC San Jose

ONTSJC

Ontario

Wed 2/12

15:05-16:20

Nonstop1h 15m

San Jose

Fri 4/12

11:55-13:15

Nonstop1h 20m

R2 538

OntarioSan Jose

ONT Ontario - SJC San Jose

ONTSJC

Ontario

Fri 15/1

17:00-23:35

2 stops6h 35m

San Jose

Mon 1/2

14:30-19:45

2 stops5h 15m

R3 032

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ontario to San Jose, California

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

Prices

Airlines

Other information

What is the typical price of a round-trip flight between Ontario and San Jose, California?

Prices are currently low for flights on this route.

Typical prices usually range from R2 093 to R5 669.
The lowest price recently found on this route was R1 928.

What is the cheapest month to fly to San Jose, California?

The month of February is another great option to travel to San Jose, California, with average flight prices from Ontario averaging around R4 927.

How far in advance should I book a flight from Ontario to San Jose, California?

You are more likely to see cheaper flights to San Jose, California from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to San Jose, California for around R6 270 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Jose, California from Ontario for as low as R2 373 on momondo.

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

As of November 2026, prices for Ontario to San Jose, California flights are approximately 16% more expensive when compared to flights at the same time last year.

When to book flights from Ontario to San Jose, California

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

Estimated return price

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

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

Best price found	R972
Direct flights	Every day
Airports in San Jose, California	1 airport

The best one-way flight to San Jose, California from Ontario in the past 72 hours is R972. The best return flight deal from Ontario to San Jose, California found on momondo in the last 72 hours is R1 928.

Direct flights go from Ontario to San Jose, California every day.

There is 1 airport in San Jose, California. From Ontario there are direct flights to San Jose (SJC).

Search flight deals

Frequently asked questions about flying from Ontario to San Jose, California

How far is Ontario to San Jose by plane?
San Jose is 527,5 km away from Ontario.
When did momondo last update prices for flights from Ontario Airport to San Jose Airport?
Prices for flights from Ontario Airport to San Jose Airport are refreshed on a daily basis.
How old do you have to be to fly from Ontario Airport to San Jose Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario Airport to San Jose Airport.
What documentation or ID do you need to fly to San Jose Airport?
The required travel and health documents for your San Jose 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 licence and a passport valid for six months after your intended arrival at San Jose 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 Ontario to San Jose, California?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Ontario to San Jose, California is Boeing 737 MAX 8 (19,38% of total bookings). The next most popular plane models are Boeing 737-800 Passenger/BBJ2 (winglets) (19,22%), Airbus A321neo (11,56%), and Boeing 737-800 (6,84%).

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Jose from Ontario.

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

Flights from Ontario to San Jose 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 Ontario to San Jose?

momondo helps you find the best flight between Ontario and San Jose by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are simply researching potential flights to San Jose, momondo offers a useful price alert feature which will track prices for flights to San Jose from Ontario and alert you when they change.