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Cheap flights from Ontario to San Jose from $50

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 San Jose departing on 3/10. 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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Find the cheapest flights from Ontario to San Jose

Cheap round-trip flights

These are some of the best round-trip flight deals from Ontario to San Jose that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Ontario to San Jose.

Cheap last minute flights

Planning a quick getaway from Ontario to San Jose? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to San Jose, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Ontario to San Jose

Find recent round-trip train or bus tickets from Ontario to San Jose.

All round-trip flight deals to San Jose

The cheapest plane tickets to San Jose found on KAYAK recently.
9:28 pm - 4:23 pmONT-SJC
18h 55m1 stop
5:19 pm - 7:14 amSJC-ONT
13h 55m1 stop
$106Frontier
Find Deal
Fri, Jan 10 - Sun, Jan 12
9:28 pm - 4:23 pmONT-SJC
18h 55m1 stop
5:19 pm - 11:08 amSJC-ONT
17h 49m1 stop
$107Frontier
Find Deal
Fri, Jan 10 - Sun, Jan 12
6:00 am - 7:15 amONT-SJC
1h 15mnonstop
7:45 am - 9:05 amSJC-ONT
1h 20mnonstop
$216Southwest
Find Deal
Fri, Feb 7 - Mon, Feb 10
2:05 pm - 3:20 pmONT-SJC
1h 15mnonstop
7:05 pm - 8:20 pmSJC-ONT
1h 15mnonstop
$217Southwest
Find Deal
Tue, Jan 7 - Fri, Jan 10
6:00 am - 5:35 pmONT-SJC
11h 35m1 stop
6:25 am - 3:25 pmSJC-ONT
9h 00m1 stop
$259Delta
Find Deal
Tue, Jan 7 - Wed, Jan 8
5:44 pm - 9:14 amONT-SJC
15h 30m2 stops
1:10 pm - 8:13 pmSJC-ONT
7h 03m1 stop
$263Alaska Airlines
Find Deal
Tue, Jan 28 - Wed, Jan 29
6:00 am - 12:15 pmONT-SJC
6h 15m1 stop
5:19 pm - 10:38 amSJC-ONT
17h 19m1 stop
$268Alaska Airlines
Find Deal
Sat, Jan 18 - Sat, Jan 18
6:00 am - 5:35 pmONT-SJC
11h 35m1 stop
2:25 pm - 10:32 pmSJC-ONT
8h 07m1 stop
$269Delta
Find Deal
Tue, Jan 7 - Thu, Jan 9
12:45 pm - 6:47 pmONT-SJC
6h 02m1 stop
6:00 am - 11:58 amSJC-ONT
5h 58m1 stop
$382American Airlines
Find Deal
Fri, Jan 3 - Tue, Jan 7
12:48 pm - 6:51 pmONT-SJC
6h 03m1 stop
6:00 am - 12:06 pmSJC-ONT
6h 06m1 stop
$404American Airlines
Find Deal
Fri, Jan 10 - Sun, Jan 12
10:34 am - 5:06 pmONT-SJC
6h 32m1 stop
$50Frontier
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Mon, Mar 10
10:34 am - 4:46 pmONT-SJC
6h 12m1 stop
$53Frontier
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Fri, Feb 21
6:00 am - 7:15 amONT-SJC
1h 15mnonstop
$108Southwest
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Sun, Feb 2
8:30 am - 9:50 amONT-SJC
1h 20mnonstop
$109Southwest
Find Deal
Tue, Jan 7
6:00 am - 2:11 pmONT-SJC
8h 11m1 stop
$129Alaska Airlines
Find Deal
Tue, Mar 4
6:00 am - 12:15 pmONT-SJC
6h 15m1 stop
$139Alaska Airlines
Find Deal
Mon, Feb 3
9:11 am - 7:35 amONT-SJC
22h 24m3 stops
Thu, Feb 20
6:00 am - 10:12 pmONT-SJC
16h 12m1 stop
$265Delta
Find Deal
Wed, Jan 15
9:11 am - 11:12 pmONT-SJC
14h 01m3 stops
Thu, Mar 6
6:00 am - 5:35 pmONT-SJC
11h 35m2 stops
$295Delta
Find Deal
Thu, Jan 16
10:19 pm - 1:49 pmONT-SJC
15h 30m1 stop
7:26 pm - 8:06 amSJC-ONT
12h 40m1 stop
$212Frontier
Find Deal
Mon, Dec 23 - Sat, Jan 4
10:19 pm - 1:49 pmONT-SJC
15h 30m1 stop
7:26 pm - 1:00 pmSJC-ONT
17h 34m1 stop
$214Frontier
Find Deal
Mon, Dec 23 - Thu, Jan 2
1:15 pm - 6:00 pmONT-SJC
4h 45m1 stop
9:45 pm - 11:00 pmSJC-ONT
1h 15mnonstop
$514Southwest
Find Deal
Sat, Dec 21 - Sat, Dec 21
5:15 pm - 6:30 pmONT-SJC
1h 15mnonstop
9:45 pm - 11:00 pmSJC-ONT
1h 15mnonstop
$515Southwest
Find Deal
Sat, Dec 21 - Sat, Dec 21
12:46 pm - 6:48 pmONT-SJC
6h 02m1 stop
6:00 am - 12:06 pmSJC-ONT
6h 06m1 stop
$521American Airlines
Find Deal
Fri, Dec 20 - Fri, Dec 27
6:03 pm - 11:54 amONT-SJC
17h 51m1 stop
7:44 pm - 9:45 amSJC-ONT
14h 01m2 stops
$782Alaska Airlines
Find Deal
Mon, Dec 23 - Thu, Jan 2
10:40 am - 10:59 pmONT-SJC
12h 19m2 stops
6:15 am - 7:37 pmSJC-ONT
13h 22m2 stops
$892Alaska Airlines
Find Deal
Mon, Dec 23 - Thu, Jan 2
7:00 am - 9:55 pmONT-SJC
14h 55m1 stop
6:15 am - 12:28 amSJC-ONT
18h 13m2 stops
$963Delta
Find Deal
Fri, Dec 20 - Fri, Dec 27
1:15 pm - 9:55 pmONT-SJC
8h 40m2 stops
6:15 am - 12:28 amSJC-ONT
18h 13m2 stops
$968Delta
Find Deal
Fri, Dec 20 - Fri, Dec 27
6:10 am - 6:10 pmONT-SJC
12h 00m2 stops
10:35 am - 10:02 pmSJC-ONT
11h 27m2 stops
$2,655American Airlines
Find Deal
Thu, Dec 19 - Fri, Dec 20
6:00 am - 7:15 amONT-SJC
1h 15mnonstop
7:45 am - 9:05 amSJC-ONT
1h 20mnonstop
$216Southwest
Find Deal
Fri, Feb 7 - Mon, Feb 10
2:05 pm - 3:20 pmONT-SJC
1h 15mnonstop
7:05 pm - 8:20 pmSJC-ONT
1h 15mnonstop
$217Southwest
Find Deal
Tue, Jan 7 - Fri, Jan 10
2:05 pm - 3:20 pmONT-SJC
1h 15mnonstop
7:45 am - 9:05 amSJC-ONT
1h 20mnonstop
$222Southwest
Find Deal
Mon, Jan 13 - Fri, Jan 17
6:00 am - 7:15 amONT-SJC
1h 15mnonstop
9:45 am - 11:00 amSJC-ONT
1h 15mnonstop
$223Southwest
Find Deal
Sun, Jan 26 - Sat, Feb 1
5:45 pm - 7:05 pmONT-SJC
1h 20mnonstop
7:05 pm - 8:20 pmSJC-ONT
1h 15mnonstop
$228Southwest
Find Deal
Mon, Jan 27 - Wed, Jan 29
6:00 am - 7:15 amONT-SJC
1h 15mnonstop
6:45 am - 8:00 amSJC-ONT
1h 15mnonstop
$260Southwest
Find Deal
Tue, Apr 1 - Sun, Apr 6
7:45 pm - 9:00 pmONT-SJC
1h 15mnonstop
7:05 pm - 8:20 pmSJC-ONT
1h 15mnonstop
$276Southwest
Find Deal
Sat, Jan 4 - Wed, Jan 8
7:35 pm - 8:50 pmONT-SJC
1h 15mnonstop
7:05 pm - 8:20 pmSJC-ONT
1h 15mnonstop
$278Southwest
Find Deal
Mon, Jan 6 - Thu, Jan 9
6:30 am - 7:45 amONT-SJC
1h 15mnonstop
6:45 am - 8:00 amSJC-ONT
1h 15mnonstop
$300Southwest
Find Deal
Sat, Mar 22 - Sun, Mar 30
1:15 pm - 2:35 pmONT-SJC
1h 20mnonstop
5:15 pm - 6:30 pmSJC-ONT
1h 15mnonstop
$335Southwest
Find Deal
Mon, Jan 6 - Mon, Jan 6

Frontier flights from Ontario to San Jose

Our best Frontier deals on Ontario to San Jose flight tickets
Frontier
Jan 10
ONT9:28 pmOntario
18h 55m
1 stop
SJC4:23 pmSan Jose
Jan 12
SJC5:19 pmSan Jose
13h 55m
1 stop
ONT7:14 amOntario
Frontier
Jan 10
ONT9:28 pmOntario
18h 55m
1 stop
SJC4:23 pmSan Jose
Jan 12
SJC5:19 pmSan Jose
17h 49m
1 stop
ONT11:08 amOntario
Frontier
Jan 10
ONT9:28 pmOntario
18h 55m
1 stop
SJC4:23 pmSan Jose
Jan 12
SJC5:19 pmSan Jose
17h 49m
1 stop
ONT11:08 amOntario

American Airlines flights from Ontario to San Jose

Our best American Airlines deals on Ontario to San Jose flight tickets
American Airlines
Jan 3
ONT12:45 pmOntario
6h 02m
1 stop
SJC6:47 pmSan Jose
Jan 7
SJC6:00 amSan Jose
5h 58m
1 stop
ONT11:58 amOntario
American Airlines
Jan 10
ONT12:48 pmOntario
6h 03m
1 stop
SJC6:51 pmSan Jose
Jan 12
SJC6:00 amSan Jose
6h 06m
1 stop
ONT12:06 pmOntario
American Airlines
Jan 9
ONT6:10 amOntario
6h 11m
1 stop
SJC12:21 pmSan Jose
Jan 12
SJC6:00 amSan Jose
6h 06m
1 stop
ONT12:06 pmOntario

See travel insights to San Jose from

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

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 San Jose?

In general, September is the cheapest month to fly from Ontario to San Jose. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $86. If you aren’t able to travel to San Jose during the month of September, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $95.

What is the cheapest day to depart on your flight to San Jose?

The cheapest day to depart on your flight to San Jose is on a Saturday when prices can be found for as low as $128. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to San Jose on Sunday is $184.

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

Our most recent data shows that the best time of day to fly to San Jose is in the evening. Flights from Ontario to San Jose during this time can be as low as $108. In contrast, the most expensive time of day to depart to San Jose is at noon when prices are around $157.

What is the cheapest Ontario to San Jose flight route?

Fly from Ontario to San Jose for the best Ontario - San Jose flight prices

How far in advance should I book a flight to San Jose?

We recommend purchasing flights from Ontario to San Jose 6 days ahead of your departure date because this is when momondo users tend to see the best flight rates. On average, our users have found flights to San Jose for $182. However, in the past 72 hours, people saw flights from Ontario for as low as $39.

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

There are 1 cabin classes available to choose from on Ontario to San Jose 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 San Jose flights?

You could potentially save up to 53% on your flight if you consider stops on a Ontario to San Jose flight.

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

As of December 2024, prices for Ontario to San Jose flights are approximately 4% cheaper when compared to flights at the same time last year.

When to book flights from Ontario to San Jose

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

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

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

Best Price Found

$50

Fastest flight time

1h 15m

Direct flights

Every day

Airports in San Jose

1 airport
The best one-way flight to San Jose from Ontario in the past 72 hours is $50. The best round-trip flight deal from Ontario to San Jose found on momondo in the last 72 hours is $106.
The fastest flight from Ontario to San Jose takes 1h 15m
Direct flights go from Ontario to San Jose every day.
There is 1 airport near San Jose: San Jose (SJC)

  • How far is Ontario to San Jose by plane?

    There are 327.8 mi between Ontario and San Jose. Typically, this will take 1h 15m by plane in normal conditions.

  • 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 updated daily.

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

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

    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 San Jose Airport.

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

    The necessary travel and health documents for your San Jose Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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

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


Best airlines flying from Ontario to San Jose

Compare and see reviews for airlines that fly from Ontario to San Jose with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $26Free CancellationRating
6.1
3,479 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $42Free CancellationRating
6.3
8,119 reviews
Search Spirit Airlines flights
Breeze AirwaysPriceFrom $78Free CancellationRating
8.1
135 reviews
Search Breeze Airways flights
Alaska AirlinesPriceFrom $114Free CancellationRating
8.0
9,552 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $180Free CancellationRating
8.1
4,848 reviews
Search Southwest flights
American AirlinesPriceFrom $273Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
  • Southwest Flights From Ontario to San Jose

    The lowest priced Southwest flight from Ontario to San Jose from the last 72 hours was $180. Generally, Southwest has 9 flights on this route every week with an average price of $272. Southwest is rated 8.1/10 by our users.


Why use momondo?

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

It is quick and easy to find Ontario to San Jose 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 San Jose that suits you.

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?

Once you have performed a search for Ontario to San Jose flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Of course. momondo tracks the price of Ontario to San Jose 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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