Cheap flights from Ontario, CA to San Diego, CA
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Tips to know when travelling to San Diego
Cheapest one-way trip | $190 |
---|---|
Cheapest round-trip | $377 |
Average round-trip | $679 |
Most popular airline | United Airlines |
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Book your trip to arrive at San Diego International, or McClellan–Palomar. The most popular airlines for this route are United Airlines, and Alaska Airlines. Ontario and San Diego have 40 direct flights per week.
Check-in for a flight from Ontario to San Diego
Name | Carrier code | IATA Code | Passport needed during booking | Online check-in available |
---|---|---|---|---|
United Airlines | UAL | UA | Yes | No |
Alaska Airlines | ASA | AS | No | Opens 24 days before flight Closes 1 hours before flight |
Weather in San Diego
Average Weather
Month | Average monthly max temperature | Average monthly min temperature |
January | 18°C | 10°C |
February | 17°C | 10°C |
March | 18°C | 11°C |
April | 19°C | 12°C |
May | 20°C | 14°C |
June | 22°C | 16°C |
July | 24°C | 18°C |
August | 25°C | 19°C |
September | 25°C | 19°C |
October | 23°C | 16°C |
November | 21°C | 13°C |
December | 17°C | 11°C |
14 day forecast
Frequently asked questions
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