Cheap flights from Ontario, CA to San Jose, CA
Flights starting at $47. 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
Cheapest one-way trip | $157 |
---|---|
Cheapest round-trip | $337 |
Most popular airline | Alaska Airlines |
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The most popular airlines for this route are Alaska Airlines, Frontier Airlines, Spirit Airlines, JetBlue Airways, and Allegiant Air. Ontario and San Jose have 196 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
Name | Carrier code | IATA Code | Passport needed during booking | Online check-in available |
---|---|---|---|---|
Alaska Airlines | ASA | AS | No | Opens 24 days before flight Closes 1 hours before flight |
Frontier Airlines | FFT | F9 | No | Opens 24 days before flight Closes 1 hours before flight |
Spirit Airlines | NKS | NK | No | Opens 24 days before flight Closes 1 hours before flight |
JetBlue Airways | JBU | B6 | No | Opens 24 days before flight Closes 2 hours before flight |
Allegiant Air | AAY | G4 | No | Opens 24 days before flight Closes 1 hours before flight |
Weather in San Jose
Average Weather
Month | Average monthly max temperature | Average monthly min temperature |
January | 15°C | 6°C |
February | 16°C | 6°C |
March | 17°C | 7°C |
April | 20°C | 8°C |
May | 22°C | 10°C |
June | 26°C | 13°C |
July | 29°C | 15°C |
August | 29°C | 15°C |
September | 28°C | 15°C |
October | 24°C | 13°C |
November | 18°C | 9°C |
December | 14°C | 7°C |
14 day forecast
Frequently asked questions
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