How long is the flight from San Jose, California to Region of Ontario?

There are many flights that can get you from San Jose, California to Region of Ontario in 6h 49m. Fly via United Airlines, Delta, or Air Canada to get the fastest option. The distance between San Jose, California and Region of Ontario is about 2238 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

What are the cheapest airlines to fly from San Jose, California to Region of Ontario one-way?

The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $164. However, be on the lookout for offers from United Airlines and Air Canada, as they are both options that can get you from San Jose, California to Region of Ontario for a low price.

In terms of precipitation, rainfall in Region of Ontario ranges from 2.0 - 3.3 inches per month. June is typically the wettest month, when rainfall can reach 3.3 in. February is typically the driest time to visit Region of Ontario when rainfall is around 2.0 in.

If weather is an important factor for your trip to Region of Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

What are the most popular routes from San Jose, California to Region of Ontario?

When deciding which route to take from San Jose, California to Region of Ontario consider San Jose - Toronto Pearson Intl, San Jose - Montreal Pierre Elliott Trudeau Intl or San Jose - Toronto Island as they are the most popular.

What is the cheapest time of day to fly from SJC to ON?

When flying from San Jose, California to Region of Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly from for flights from San Jose to Ontario?

Most people fly from San Jose (SJC) if they book a flight from San Jose to Ontario. San Jose is conveniently located just 2.9 mi from San Jose’s city center.

Can I find deals for flights from San Jose to Ontario that include hotel bookings?

Yes. In addition to deals on San Jose to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from San Jose to Ontario?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Jose to Ontario.

Can I find deals for business class flights from San Jose to Ontario?

Yes. Cheapflights offers flight deals from San Jose to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$160+ Cheap Flights from San Jose, CA to Ontario

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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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Cheap flight deals from San Jose to Ontario

Cheapest

Best

Last-minute

One-way

Cheapest flights from San Jose to Ontario
Explore the most affordable flight options available from San Jose to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2026.

Thu 9/106:10 am -

2 stops14h 49m

Sat 9/199:45 am -

2 stops11h 01m

Deal found 8/17

$390

Tue 10/206:30 am -

1 stop8h 26m

Sat 10/247:00 am -

1 stop8h 01m

Deal found 8/16

$391

Thu 9/106:10 am -

2 stops13h 49m

Wed 9/1611:38 am -

1 stop12h 44m

Deal found 8/17

$394

Sat 9/196:30 am -

2 stops14h 24m

Fri 9/2510:15 am -

1 stop15h 27m

Deal found 8/16

$396

Tue 10/206:30 am -

1 stop11h 14m

Wed 10/286:45 am -

1 stop8h 17m

Deal found 8/17

$399

Tue 10/206:20 am -

2 stops13h 36m

Thu 10/2211:38 am -

1 stop10h 22m

Deal found 8/16

$401

Fri 10/2312:57 pm -

1 stop8h 02m

Thu 10/296:15 am -

1 stop8h 29m

Deal found 8/17

$403

Tue 10/206:34 pm -

2 stops14h 25m

Fri 10/236:30 am -

2 stops12h 50m

Deal found 8/16

$406

Fri 10/2312:57 pm -

1 stop8h 02m

Tue 10/275:49 pm -

1 stop7h 06m

Deal found 8/16

$409

Fri 10/2310:45 pm -

1 stop8h 38m

Fri 10/306:00 am -

2 stops9h 47m

Deal found 8/17

$412

Thu 10/226:20 am -

2 stops13h 36m

Tue 10/275:49 pm -

1 stop7h 06m

Deal found 8/17

$419

Sat 9/126:30 am -

1 stop7h 12m

Sat 9/1912:15 pm -

1 stop13h 40m

Deal found 8/17

$468

Best flights from San Jose to Ontario
Discover carefully curated flight deals from San Jose to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 20, 2026.

Sat 9/122:10 pm -

1 stop6h 49m

Sat 9/194:18 pm -

1 stop7h 36m

Deal found 8/15

$391

Fri 9/116:40 am -

1 stop12h 19m

Sat 9/1911:38 am -

1 stop12h 44m

Deal found 8/19

$391

Thu 10/16:40 am -

1 stop12h 19m

Thu 10/1512:49 pm -

1 stop11h 05m

Deal found 8/17

$391

Sat 9/262:08 pm -

1 stop6h 51m

Wed 9/3010:45 am -

1 stop9h 47m

Deal found 8/19

$391

Wed 9/168:45 am -

2 stops21h 37m

Fri 9/187:45 pm -

2 stops28h 09m

Deal found 8/17

$837

Mon 9/1410:50 pm -

1 stop8h 33m

Mon 9/2112:25 pm -

1 stop11h 16m

Deal found 8/17

$391

Sat 9/122:10 pm -

1 stop16h 44m

Wed 9/167:00 am -

1 stop7h 46m

Deal found 8/19

$391

Fri 10/26:40 am -

1 stop12h 19m

Wed 10/76:30 am -

1 stop9h 09m

Deal found 8/19

$391

Fri 10/236:35 pm -

1 stop17h 39m

Tue 10/276:45 am -

1 stop8h 17m

Deal found 8/17

$399

Fri 9/1810:50 pm -

1 stop8h 33m

Mon 9/2111:38 am -

1 stop12h 44m

Deal found 8/19

$391

Wed 10/218:45 am -

1 stop9h 47m

Sat 10/316:45 am -

1 stop8h 17m

Deal found 8/17

$399

Tue 10/206:30 am -

1 stop12h 29m

Thu 10/2212:49 pm -

1 stop11h 05m

Deal found 8/16

$391

Sat 9/126:30 am -

1 stop7h 12m

Sat 9/1912:15 pm -

1 stop13h 40m

Deal found 8/20

$468

Sat 9/262:56 pm -

2 stops23h 19m

Sun 10/46:10 pm -

2 stops48h 41m

Deal found 8/18

$1,391

Wed 9/96:30 am -

1 stop7h 12m

Fri 9/1112:15 pm -

1 stop13h 35m

Deal found 8/17

$468

Sat 9/512:46 pm -

1 stop8h 06m

Fri 9/116:00 am -

2 stops11h 14m

Deal found 8/17

$517

Wed 10/76:30 am -

1 stop7h 12m

Sat 10/1012:15 pm -

2 stops11h 33m

Deal found 8/16

$478

Sat 10/178:45 am -

2 stops31h 32m

Tue 10/208:05 pm -

2 stops24h 27m

Deal found 8/15

$874

Wed 10/146:30 am -

1 stop7h 12m

Tue 10/2012:15 pm -

2 stops11h 33m

Deal found 8/18

$478

Sat 10/178:45 am -

2 stops22h 17m

Tue 10/202:00 pm -

2 stops30h 32m

Deal found 8/15

$875

Tue 9/228:45 am -

2 stops22h 22m

Sat 9/2612:15 pm -

1 stop13h 27m

Deal found 8/19

$478

Wed 9/167:00 am -

2 stops13h 50m

Sun 9/207:00 am -

2 stops15h 51m

Deal found 8/18

$630

Mon 10/56:30 am -

1 stop7h 12m

Sat 10/1012:15 pm -

2 stops11h 33m

Deal found 8/16

$478

Fri 10/236:35 pm -

2 stops21h 11m

Tue 10/277:20 pm -

2 stops22h 48m

Deal found 8/15

$501

Sat 9/267:00 am -

2 stops13h 50m

Mon 9/287:43 pm -

2 stops19h 44m

Deal found 8/17

$697

Sun 9/277:00 am -

2 stops31h 15m

Tue 9/296:10 pm -

2 stops24h 34m

Deal found 8/18

$1,391

Fri 9/112:10 pm -

1 stop16h 57m

Sat 9/1912:15 pm -

1 stop13h 40m

Deal found 8/20

$508

Sat 11/2110:30 pm -

1 stop10h 09m

Sat 11/2812:45 pm -

1 stop12h 23m

Deal found 8/15

$713

Mon 10/192:59 pm -

2 stops23h 16m

Thu 10/226:10 pm -

2 stops24h 41m

Deal found 8/19

$1,391

Tue 10/208:45 am -

2 stops25h 24m

Wed 10/214:55 pm -

1 stop8h 47m

Deal found 8/18

$531

Last-minute flights from San Jose to Ontario
Discover last-minute flight deals from San Jose to Ontario. Data last updated August 20, 2026 and is based on user searches.

Mon 8/318:53 pm -

2 stops11h 42m

Sat 12/56:15 am -

1 stop8h 35m

Deal found 8/18

$431

Thu 9/106:10 am -

2 stops14h 49m

Sat 9/199:45 am -

2 stops11h 01m

Deal found 8/17

$390

Thu 9/106:10 am -

2 stops13h 49m

Wed 9/1611:38 am -

1 stop12h 44m

Deal found 8/17

$394

Fri 9/116:19 pm -

2 stops13h 04m

Sat 9/196:15 am -

2 stops14h 09m

Deal found 8/20

$406

Fri 9/117:00 am -

2 stops11h 59m

Wed 9/1612:08 pm -

2 stops12h 14m

Deal found 8/20

$424

Sat 9/126:30 am -

1 stop7h 12m

Sat 9/1912:15 pm -

1 stop13h 40m

Deal found 8/17

$468

Thu 9/176:40 am -

1 stop12h 19m

Mon 9/2111:38 am -

1 stop12h 44m

Deal found 8/19

$428

Fri 9/1810:50 pm -

1 stop8h 33m

Mon 9/215:54 pm -

1 stop8h 46m

Deal found 8/16

$427

Sat 9/198:45 am -

1 stop9h 47m

Sat 9/267:00 am -

1 stop8h 01m

Deal found 8/19

$391

Sat 9/196:30 am -

2 stops14h 24m

Tue 9/227:00 am -

1 stop7h 45m

Deal found 8/16

$396

Tue 9/228:45 am -

2 stops22h 22m

Sat 9/2612:15 pm -

2 stops11h 33m

Deal found 8/19

$483

Sat 9/266:00 am -

2 stops14h 13m

Wed 9/3011:38 am -

1 stop12h 44m

Deal found 8/18

$401

One-way flights from San Jose to Ontario
Search for one-way flight options from San Jose to Ontario. Find affordable one-way fares based on user searches. Data last updated August 20, 2026.

Sat 9/1212:51 pm -

1 stop8h 08m

Deal found 8/17

$160

Wed 9/96:19 pm -

2 stops11h 34m

Deal found 8/17

$165

Sat 10/108:45 am -

1 stop9h 47m

Deal found 8/18

$167

Wed 9/236:00 am -

2 stops12h 43m

Deal found 8/20

$170

Sat 9/56:35 pm -

2 stops14h 48m

Deal found 8/18

$172

Tue 10/276:30 am -

1 stop14h 29m

Deal found 8/19

$182

Tue 10/2712:57 pm -

1 stop8h 02m

Deal found 8/19

$185

Mon 10/266:30 am -

1 stop9h 15m

Deal found 8/19

$202

Wed 9/236:30 am -

1 stop7h 12m

Deal found 8/20

$205

Sun 11/82:14 pm -

1 stop16h 33m

Deal found 8/17

$206

Thu 10/159:03 pm -

2 stops19h 17m

Deal found 8/17

$208

Thu 10/19:03 pm -

3 stops25h 02m

Deal found 8/16

$210

Find flight deals from San Jose to Ontario

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$390 (Billigflug)
One-way from	$160 (Delta)
Popular in	August
Cheapest in	April
Average price	$592

Provider with most accurate pricing for San Jose-Toronto (YTO) flight deals.

Search Deals

Provider most trusted by Cheapflights users for San Jose-Toronto (YTO) flights.

Search Deals

From San Jose to Ontario

Search Deals

One-way flight from San Jose to Ontario

Search Deals

Highest demand for flights based on searches. 9% potential increase in price ($51 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in August 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

San JoseToronto

SJC San Jose - YYZ Toronto Pearson Intl

SJCYYZ

San Jose

Sat 9/12

2:10 pm-11:59 pm

1 stop6h 49m

Toronto Pearson Intl

Sat 9/19

4:18 pm-8:54 pm

1 stop7h 36m

$391

San JoseToronto

SJC San Jose - YYZ Toronto Pearson Intl

SJCYYZ

San Jose

Fri 9/11

6:40 am-9:59 pm

1 stop12h 19m

Toronto Pearson Intl

Sat 9/19

11:38 am-9:22 pm

1 stop12h 44m

$391

San JoseToronto

SJC San Jose - YYZ Toronto Pearson Intl

SJCYYZ

San Jose

Thu 10/1

6:40 am-9:59 pm

1 stop12h 19m

Toronto Pearson Intl

Thu 10/15

12:49 pm-8:54 pm

1 stop11h 05m

$391

San JoseToronto

SJC San Jose - YYZ Toronto Pearson Intl

SJCYYZ

San Jose

Sat 9/26

2:08 pm-11:59 pm

1 stop6h 51m

Toronto Pearson Intl

Wed 9/30

10:45 am-5:32 pm

1 stop9h 47m

$391

San JoseToronto

SJC San Jose - YYZ Toronto Pearson Intl

SJCYYZ

San Jose

Mon 9/14

10:50 pm-10:23 am

1 stop8h 33m

Toronto Pearson Intl

Mon 9/21

12:25 pm-8:41 pm

1 stop11h 16m

$391

San JoseToronto

SJC San Jose - YYZ Toronto Pearson Intl

SJCYYZ

San Jose

Sat 9/12

2:10 pm-9:54 am

1 stop16h 44m

Toronto Pearson Intl

Wed 9/16

7:00 am-11:46 am

1 stop7h 46m

$391

San JoseToronto

SJC San Jose - YYZ Toronto Pearson Intl

SJCYYZ

San Jose

Fri 10/2

6:40 am-9:59 pm

1 stop12h 19m

Toronto Pearson Intl

Wed 10/7

6:30 am-12:39 pm

1 stop9h 09m

$391

San JoseToronto

SJC San Jose - YYZ Toronto Pearson Intl

SJCYYZ

San Jose

Fri 9/18

10:50 pm-10:23 am

1 stop8h 33m

Toronto Pearson Intl

Mon 9/21

11:38 am-9:22 pm

1 stop12h 44m

$391

San JoseToronto

SJC San Jose - YYZ Toronto Pearson Intl

SJCYYZ

San Jose

Tue 10/20

6:30 am-9:59 pm

1 stop12h 29m

Toronto Pearson Intl

Thu 10/22

12:49 pm-8:54 pm

1 stop11h 05m

$391

San JoseToronto

SJC San Jose - YYZ Toronto Pearson Intl

SJCYYZ

San Jose

Fri 10/23

6:35 pm-3:14 pm

1 stop17h 39m

Toronto Pearson Intl

Tue 10/27

6:45 am-12:02 pm

1 stop8h 17m

$399

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/17

Showing 1-10 of 60 resultsSorted by cheapest first

...

Best time to book a flight from San Jose to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from San Jose with our price prediction graph.

SJC-YYZ

SJC-YTZ

SJC-YQG

SJC-YHM

SJC-YUL

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from San Jose to Ontario

SJC-CAON

SJC-YYZ

SJC-YTZ

SJC-YQG

SJC-YHM

What is the cheapest month to book a flight from San Jose, California to Region of Ontario?

Currently, May is the cheapest month in which you can book a flight from San Jose, California to Region of Ontario (average of $411). Flying from San Jose, California to Region of Ontario in April is currently the most expensive (average of $802). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from San Jose, California to Region of Ontario?

Airfare is typical for this route at the moment.

San Jose, California to Region of Ontario flights typically cost between $390 and $594 in September.
The cheapest round-trip price found within the last 5 days was $390 on Multiple Airlines (Sep 10-Sep 19).

Reviews of airlines servicing Ontario

Read through reviews of airlines operating flights from San Jose to Ontario, such as Delta and United Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

7.8

Good

8,505 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

7.8

Good

8,505 reviews

Delta

7.8

Good

8,505 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines

7.4

Good

10,102 reviews

Delta

7.8

Good

8,505 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What airport do you fly from for flights from San Jose to Ontario?
Most people fly from San Jose (SJC) if they book a flight from San Jose to Ontario. San Jose is conveniently located just 2.9 mi from San Jose’s city center.
How long is the flight from San Jose, California to Region of Ontario?
There are many flights that can get you from San Jose, California to Region of Ontario in 6h 49m. Fly via United Airlines, Delta, or Air Canada to get the fastest option. The distance between San Jose, California and Region of Ontario is about 2238 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What are the cheapest airlines to fly from San Jose, California to Region of Ontario one-way?
The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $164. However, be on the lookout for offers from United Airlines and Air Canada, as they are both options that can get you from San Jose, California to Region of Ontario for a low price.
What are the most popular routes from San Jose, California to Region of Ontario?
When deciding which route to take from San Jose, California to Region of Ontario consider San Jose - Toronto Pearson Intl, San Jose - Montreal Pierre Elliott Trudeau Intl or San Jose - Toronto Island as they are the most popular.
Can I find deals for flights from San Jose to Ontario that include hotel bookings?
Yes. In addition to deals on San Jose to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from San Jose to Ontario?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Jose to Ontario.
Can I find deals for business class flights from San Jose to Ontario?
Yes. Cheapflights offers flight deals from San Jose to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from San Jose, California to Region of Ontario?
Currently, May is the cheapest month in which you can book a flight from San Jose, California to Region of Ontario (average of $411). Flying from San Jose, California to Region of Ontario in April is currently the most expensive (average of $802). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 2 airlines flying from San Jose to Ontario

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$174	Average$750	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$188	Average$524	FlexibilityNo cancel fee	On-timeN/A

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$160+ Cheap flights from San Jose, CA (SJC) to Ontario

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/12. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from San Jose to Ontario

Cheapest flights from San Jose to OntarioExplore the most affordable flight options available from San Jose to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2026.

Explore the most affordable flight options available from San Jose to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2026.

Best flights from San Jose to OntarioDiscover carefully curated flight deals from San Jose to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 20, 2026.

Discover carefully curated flight deals from San Jose to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 20, 2026.

Last-minute flights from San Jose to OntarioDiscover last-minute flight deals from San Jose to Ontario. Data last updated August 20, 2026 and is based on user searches.

Discover last-minute flight deals from San Jose to Ontario. Data last updated August 20, 2026 and is based on user searches.

One-way flights from San Jose to OntarioSearch for one-way flight options from San Jose to Ontario. Find affordable one-way fares based on user searches. Data last updated August 20, 2026.

Search for one-way flight options from San Jose to Ontario. Find affordable one-way fares based on user searches. Data last updated August 20, 2026.

Find flight deals from San Jose to Ontario

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Most trusted provider

Round-trip from

One-way from

Popular in

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Average price

Cheapflights Fare Finder

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

Best time to book a flight from San Jose to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from San Jose with our price prediction graph.

Cheapflights Insights

What is the cheapest month to book a flight from San Jose, California to Region of Ontario?

How much does it cost to fly round-trip from San Jose, California to Region of Ontario?

Airfare is typical for this route at the moment.

San Jose, California to Region of Ontario flights typically cost between $390 and $594 in September.The cheapest round-trip price found within the last 5 days was $390 on Multiple Airlines (Sep 10-Sep 19).

Reviews of airlines servicing Ontario

Read through reviews of airlines operating flights from San Jose to Ontario, such as Delta and United Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What airport do you fly from for flights from San Jose to Ontario?

How long is the flight from San Jose, California to Region of Ontario?

What are the cheapest airlines to fly from San Jose, California to Region of Ontario one-way?

What are the most popular routes from San Jose, California to Region of Ontario?

Can I find deals for flights from San Jose to Ontario that include hotel bookings?

How can I find direct flights from San Jose to Ontario?

Can I find deals for business class flights from San Jose to Ontario?

What is the cheapest month to book a flight from San Jose, California to Region of Ontario?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for San Jose to Ontario

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from San Jose to Ontario by cabin class

Find flights from San Jose to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.

San Jose and Ontario flights

Browse other San Jose and Ontario flight options. Last updated on August 20, 2026.

Popular flight searches

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San Jose to Ontario flights

Consider these flights traveling from San Jose to Ontario.

Top 2 airlines flying from San Jose to Ontario

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Cheapest flights from San Jose to Ontario
Explore the most affordable flight options available from San Jose to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2026.

Best flights from San Jose to Ontario
Discover carefully curated flight deals from San Jose to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 20, 2026.

Last-minute flights from San Jose to Ontario
Discover last-minute flight deals from San Jose to Ontario. Data last updated August 20, 2026 and is based on user searches.

One-way flights from San Jose to Ontario
Search for one-way flight options from San Jose to Ontario. Find affordable one-way fares based on user searches. Data last updated August 20, 2026.

San Jose, California to Region of Ontario flights typically cost between $390 and $594 in September.
The cheapest round-trip price found within the last 5 days was $390 on Multiple Airlines (Sep 10-Sep 19).