Cheap Flights from Ontario, CA to San Jose from $183

On Cheapflightsplus.com you will find 435 connecting flights from Ontario to San Jose. You can compare airfare deals from 7 airlines and multiple travel sites from $183, book and save on cheap plane tickets and last minute offers. Also check out ONT-SJO flight schedule to find best flight time, convenient departure and arrival airports.

Flight Information

Below we will explain in detail what the flights cost on the destination from Ontario to San Jose depends on and how to choose the most interesting flight option for you.

Distance between Ontario and San Jose is 4324 miles. Time difference between the cities is 2h. Airplanes depart 00:08 to 23:25 from 2 Ontario airports and arrive 00:08 to 23:25 to 2 San Jose airports. Average flight time is 22h 52m.

  • The fastest flight 8h 15m
  • Average flight time 22h 52m
  • The earliest flight 00:08
  • The latest flight 23:25
  • Distance 2687 ml

The cheapest months to travel to San Jose are june (from 183 $), august (from 188 $), may (from 190 $).

The most expensive months are december (from 793 $), november (from 452 $), february (from 266 $).

What is the lowest airfare Ontario to San Jose?

The cheapest plane ticket found by our users is $183. This airfare is for economy class on one-way F94758 flight by Frontier Airlines for June 6, 2025 which leaves Ontario Int. in Ontario at 19:36 am and arrives at San Jose Juan Santamaria Intl at 10:27.

Economy class
$183
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Business class
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First class
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Flight Schedule Ontario (California) to San Jose

06:00 — 19:37
12h 37m flight time
Find flight
from$207
06:00 — 11:15 Ontario — Houston
UA722 United Airlines
5h 43m stop
16:58 — 19:37 Houston — San Jose
UA1280 United Airlines
06:00 — 22:39
15h 39m flight time
Find flight
from$207
06:00 — 11:15 Ontario — Houston
UA397 United Airlines
8h 45m stop
20:00 — 22:39 Houston — San Jose
UA1055 United Airlines
06:00 — 22:39
15h 39m flight time
Find flight
from$207
06:00 — 11:15 Ontario — Houston
UA722 United Airlines
8h 45m stop
20:00 — 22:39 Houston — San Jose
UA1055 United Airlines
06:00 — 22:39
15h 39m flight time
Find flight
from$207
06:00 — 11:15 Ontario — Houston
UA1936 United Airlines
8h 45m stop
20:00 — 22:39 Houston — San Jose
UA1055 United Airlines
06:04 — 19:37
12h 33m flight time
Find flight
from$206
06:00 — 11:15 Ontario — Houston
UA1936 United Airlines
5h 39m stop
16:58 — 19:37 Houston — San Jose
UA1280 United Airlines
07:00 — 23:30+1day
15h 30m flight time
Find flight
from$190
06:00 — 07:16 Ontario — Las Vegas
F92232 Frontier Airlines
4h 30m stop
13:50 — 15:15 Las Vegas — Los Angeles
AS2014 Alaska Airlines
2h 24m stop
17:08 — 23:46 Los Angeles — San Jose
AS1352 Alaska Airlines
12:48 — 12:40+1day
22h 52m flight time
Find flight
from$203
12:48 — 18:19 Ontario — Houston
F93132 Frontier Airlines
11h 1m stop
05:20 — 08:50 Houston — Orlando
NK1571 Spirit Airlines
2h 35m stop
11:25 — 12:40 Orlando — San Jose
NK1309 Spirit Airlines
13:19 — 10:11+1day
19h 52m flight time
Find flight
from$207
13:19 — 14:46 Ontario — San Francisco
UA2332 United Airlines
1h 29m stop
16:15 — 22:14 San Francisco — Houston
UA776 United Airlines
9h 11m stop
07:25 — 10:11 Houston — San Jose
UA2448 United Airlines
13:34 — 10:11+1day
19h 37m flight time
Find flight
from$207
13:34 — 16:52 Ontario — Denver
UA1942 United Airlines
53m stop
17:45 — 21:14 Denver — Houston
UA2619 United Airlines
10h 11m stop
07:25 — 10:11 Houston — San Jose
UA2448 United Airlines
13:35 — 10:11+1day
19h 36m flight time
Find flight
from$207
13:33 — 16:51 Ontario — Denver
UA1942 United Airlines
1h 14m stop
18:05 — 21:34 Denver — Houston
UA1430 United Airlines
9h 51m stop
07:25 — 10:11 Houston — San Jose
UA2448 United Airlines
13:35 — 10:11+1day
19h 36m flight time
Find flight
from$207
13:35 — 16:51 Ontario — Denver
UA1942 United Airlines
2h 29m stop
19:20 — 22:48 Denver — Houston
UA475 United Airlines
8h 37m stop
07:25 — 10:11 Houston — San Jose
UA2448 United Airlines
17:21 — 10:27+1day
16h 6m flight time
Find flight
from$204
17:21 — 20:45 Ontario — Denver
F92908 Frontier Airlines
3h 38m stop
00:26 — 06:09 Denver — Orlando
F91734 Frontier Airlines
3h 8m stop
09:08 — 10:27 Orlando — San Jose
NK1309 Spirit Airlines
19:22 — 23:30+3days
51h 8m flight time
Find flight
from$206
19:22 — 20:35 Ontario — Las Vegas
F94758 Frontier Airlines
23h 23m stop
19:58 — 21:24 Las Vegas — Los Angeles
AS3414 Alaska Airlines
19h 2m stop
16:26 — 23:30 Los Angeles — San Jose
AS1352 Alaska Airlines
19:36 — 10:27+2days
37h 51m flight time
Find flight
from$183
19:36 — 20:45 Ontario — Las Vegas
F94758 Frontier Airlines
18h 40m stop
15:25 — 23:16 Las Vegas — Orlando
F91728 Frontier Airlines
9h 52m stop
09:08 — 10:27 Orlando — San Jose
NK1309 Spirit Airlines
21:41 — 23:30+3days
48h 49m flight time
Find flight
from$188
21:41 — 23:14 Ontario — San Jose
F92677 Frontier Airlines
20h 43m stop
19:57 — 21:17 San Jose — Los Angeles
AS2109 Alaska Airlines
19h 9m stop
16:26 — 23:30 Los Angeles — San Jose
AS1352 Alaska Airlines
Full flight schedule will help you in detecting at what time planes fly from Ontario to San Jose. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.
*Departure and arrival times - local. Updated on October 16, 2025.

Popular Airlines on the Route

The flight Ontario — San Jose is served by 7 regular airlines and 2 low-cost airlines. Most of the flights on this route are operated by Air Canada - 21 departures per week at the price of from $ 589 . And the most expensive tickets are offered by Avianca airline - from $ 1761.

Direct flights

There’re no direct flights on this route. Try flights with stops.

Connecting Flights

There are 435 flights with layovers on the route. The fastest connecting flight is AV531 by Avianca takes 8h 15m and the cheapest is F94758 by Frontier Airlines for $183.

  • AS - Alaska Airlines
    from $246
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  • AC - Air Canada
    from $589
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  • F9 - Frontier Airlines
    from $183
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  • AV - Avianca
    from $210
    Find
  • HA - Hawaiian Airlines
    from $277
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  • Y4 - Volaris
    from $281
    Find
  • UA - United Airlines
    from $206
    Find
See more connecting flights

Airports

You can fly from Ontario to San Jose from 2 airports (Ontario Int., International Heliport).

Ontario airports

  • Ontario Int.-ONT
    from $183
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  • International Heliport-JIO
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San Jose airports

  • Juan Santamaria Intl-SJO
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  • Tobias Bolanos Intl-SYQ
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How to book a plane ticket yourself?

How to book an air ticket yourself?
  • Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
  • Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
  • Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
  • Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
  • That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.

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