Cheap flights from Ontario, CA to San Jose, CA

Flights starting at £40. Choose between Alaska Airlines, Frontier Airlines, or Spirit Airlines to find the best price.

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Tips to know when travelling to San Jose

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Travelers usually depart from Ontario International, or Montclair (Ontario) when they travel from Ontario to San Jose. Book your trip to arrive at San Jose International, or San Jose, CA - Convention Center Station. The most popular airlines for this route are Alaska Airlines, Frontier Airlines, Spirit Airlines, JetBlue Airways, and United Airlines. Ontario and San Jose have 154 direct flights per week. When you arrive at San Jose, consider visiting Golden Gate Bridge, Big Sur, and Alcatraz.

Check-in for a flight from Ontario to San Jose

NameCarrier codeIATA CodePassport needed during bookingOnline check-in available
Alaska AirlinesASAASNoOpens 24 days before flight
Closes 1 hours before flight
Frontier AirlinesFFTF9NoOpens 24 days before flight
Closes 1 hours before flight
Spirit AirlinesNKSNKNoOpens 24 days before flight
Closes 1 hours before flight
JetBlue AirwaysJBUB6NoOpens 24 days before flight
Closes 2 hours before flight
United AirlinesUALUAYesNo

San Jose travel tips

1) Explore Beethoven at Ira F. Brilliant Center for Beethoven Studies in San Jose
2) Need cash in San Jose? You can ask for CashBack
3) Taste craft beer at one of the San Jose breweries

Weather in San Jose

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January15°C6°C
February16°C6°C
March17°C7°C
April20°C8°C
May22°C10°C
June26°C13°C
July29°C15°C
August29°C15°C
September28°C15°C
October24°C13°C
November18°C9°C
December14°C7°C
Hottest Month
29°C
August
Coldest month
6°C
January
Sunny days
330
days per year

14 day forecast

Sunday
10 Mar
17°C9°C
17 Mar
23°C9°C
Monday
11 Mar
93%
16°C7°C
18 Mar
24°C10°C
Tuesday
12 Mar
81%
16°C8°C
19 Mar
23°C11°C
Wednesday
13 Mar
17°C7°C
20 Mar
22°C10°C
Thursday
14 Mar
18°C5°C
21 Mar
20°C8°C
Friday
15 Mar
20°C5°C
22 Mar
18°C5°C
Saturday
16 Mar
21°C7°C
23 Mar
21°C6°C

Frequently asked questions

What are the most popular routes to and from Ontario?
What are the most popular routes to and from San Jose?
What airports are near Ontario?
What airports are near San Jose?
Is it possible to combine flights, buses, and trains in one itinerary when traveling between Ontario and San Jose?
What is Virtual Interlining and how do I use it?
Which airlines fly between Ontario and San Jose?
When's the best time to travel between Ontario and San Jose?
What flights operate between Ontario and San Jose?
How many airports are there near Ontario?
How many airports are there near San Jose?
What time do nonstop (direct) flights between Ontario and San Jose depart?
What time do nonstop (direct) flights between Ontario and San Jose arrive?
What time do flights between Ontario and San Jose depart?
What time do flights between Ontario and San Jose arrive?

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