Cheap flights from Monterey, CA to Ontario, CA
Flights starting at $89. Choose between Alaska Airlines, United Airlines, or Frontier Airlines to find the best price.
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Tips to know when travelling to Ontario
Cheapest one-way trip | $243 |
---|---|
Cheapest round-trip | $368 |
Most popular airline | Alaska Airlines |
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Book your trip to arrive at Ontario International, or Montclair (Ontario). The most popular airlines for this route are Alaska Airlines, United Airlines, Frontier Airlines, Allegiant Air, and Spirit Airlines. Monterey and Ontario have 70 direct flights per week.
Check-in for a flight from Monterey to Ontario
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 |
United Airlines | UAL | UA | Yes | No |
Frontier Airlines | FFT | F9 | No | Opens 24 days before flight Closes 1 hours before flight |
Allegiant Air | AAY | G4 | 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 |
Weather in Ontario
Average Weather
Month | Average monthly max temperature | Average monthly min temperature |
January | 18°C | 7°C |
February | 18°C | 7°C |
March | 20°C | 8°C |
April | 23°C | 10°C |
May | 25°C | 13°C |
June | 29°C | 16°C |
July | 33°C | 19°C |
August | 33°C | 20°C |
September | 32°C | 18°C |
October | 27°C | 15°C |
November | 22°C | 10°C |
December | 17°C | 7°C |
14 day forecast
Frequently asked questions
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