Book your flight from Ontario (ONT) to Fremont (SFO) at the best prices. Fares start from $127.
Ontario
ONT
→
Fremont
SFO
10/19/2025 – 10/26/2025
Cheap flight deals from Ontario to Fremont
Average price start from:
i
$38
Round-trip flights from Ontario to Fremont starting at $38. Book now for the best deals!
One-way from:
i
$29
One-way flights from Ontario to Fremont starting at $29. Great for flexible travel!
Cheapest day:
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Wednesday
Wednesday is the cheapest day to fly from Ontario to Fremont. Save more by booking on this day!
Cheapest In:
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$17
Dec 2025
Dec 2025 is the cheapest month to fly from Ontario to Fremont with prices starting at $17.
Find flight deals from Ontario to Fremont
Cheapest flights from Ontario to Fremont
ONEWAY FLIGHTS
LAST MINUTE
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Explore the cheapest oneway flights from Ontario to Fremont spotted daily.
ONT
Ontario
ONT - Ontario • 2025-10-19 • 09:00
Unknown
60 min
SFO
Unknown City
$29
Non-stop • 60 min
ONT
Ontario
ONT - Ontario • 2025-10-19 • 09:00
Unknown
60 min
SFO
Unknown City
$59
Non-stop • 60 min
ONT
Ontario
ONT - Ontario • 2025-10-19 • 09:00
Unknown
60 min
SFO
Unknown City
$76
Non-stop • 60 min
ONT
Ontario
ONT - Ontario • 2025-10-19 • 09:00
Unknown
60 min
SFO
Unknown City
$90
Non-stop • 60 min
ONT
Ontario
ONT - Ontario • 2025-10-19 • 09:00
Unknown
60 min
SFO
Unknown City
$157
Non-stop • 60 min
ONT
Ontario
ONT - Ontario • 2025-10-19 • 09:00
Unknown
60 min
SFO
Unknown City
$278
Non-stop • 60 min
Price Trends & Analysis
Weekly Price Trends
Optimal pricing available on Wednesday for flights to Fremont.
Monthly Price Trends
Save the most on flights from Ontario to Fremont in April.
Weather & Climate Information
Temperature
Fremont experiences a Mediterranean climate, with typical temperature ranges from the mid-40s°F (7°C) in winter to the mid-80s°F (29°C) in summer, characterized by dry summers and wet winters. The best times for comfortable travel are late spring (April to June) and early fall (September to October) when temperatures are mild and precipitation is lower.
Rainfall
The best time to visit Fremont is during the spring (March to May) when temperatures are mild and wildflowers bloom. Additionally, consider aligning your trip with local events like the annual Fremont Festival in September for a vibrant cultural experience.
Airlines at San Francisco
Traveling from Ontario to Fremont has never been more convenient, thanks to several reputable airlines offering seamless connectivity between these vibrant cities. Airlines such as Frontier Airlines, United Airlines, Southwest Airlines, American Airlines provide regular flights, ensuring travelers have flexible options to suit their schedules.
Typically, the flight duration is around 10-15 hours, depending on layovers and the chosen route. Most flights from Ontario to Fremont include one stopover, often in major hubs, allowing for a comfortable transition. For those seeking to explore Fremont, booking with these airlines ensures a smooth travel experience, complete with modern amenities and excellent service.
Embark on an exciting adventure from Ontario to Fremont and discover a world of possibilities. This dynamic city offers a perfect mix of traditional charm and contemporary attractions. Time your visit during off-peak periods for maximum savings and comfort.
Airlines Flying from Ontario to Fremont
Traveling from Ontario to Fremont has never been more convenient, thanks to several reputable airlines offering seamless connectivity between these vibrant cities. Airlines such as Frontier Airlines, United Airlines, Southwest Airlines, American Airlines provide regular flights, ensuring travelers have flexible options to suit their schedules.
Typically, the flight duration is around 10-15 hours, depending on layovers and the chosen route. Most flights from Ontario to Fremont include one stopover, often in major hubs, allowing for a comfortable transition. For those seeking to explore Fremont, booking with these airlines ensures a smooth travel experience, complete with modern amenities and excellent service.
Hotels in Fremont
When staying in Fremont, look for hotels with easy access to SFO Airport. Most properties provide shuttle services for seamless airport transfers.
About Fremont
Embark on an exciting adventure from Ontario to Fremont and discover a world of possibilities. This dynamic city offers a perfect mix of traditional charm and contemporary attractions. Time your visit during off-peak periods for maximum savings and comfort.
When staying in Fremont, look for hotels with easy access to SFO Airport. Most properties provide shuttle services for seamless airport transfers.
Airlines Flying from Ontario to Fremont
Traveling from Ontario to Fremont has never been more convenient, thanks to several reputable airlines offering seamless connectivity between these vibrant cities. Airlines such as Frontier Airlines, United Airlines, Southwest Airlines, American Airlines provide regular flights, ensuring travelers have flexible options to suit their schedules.
Typically, the flight duration is around 10-15 hours, depending on layovers and the chosen route. Most flights from Ontario to Fremont include one stopover, often in major hubs, allowing for a comfortable transition. For those seeking to explore Fremont, booking with these airlines ensures a smooth travel experience, complete with modern amenities and excellent service.
Frequently Asked Questions
What is the cheapest flight from Ontario to Fremont?
The cheapest fare is $29. For the best deals, consider booking during April and flying on Wednesday.
How long is the flight from Ontario to Fremont?
Average flight time is around 10-15 hours, depending on layovers and the chosen route. Most flights include one stopover for optimal pricing.
Which airlines fly from Ontario to Fremont?
Multiple airlines operate this route including Frontier Airlines, United Airlines, Southwest Airlines. Check current schedules and availability for the best options.
What is the best time to book flights?
Booking 2–3 months in advance usually gives the best prices. Consider flying during April for additional savings.
Are there hotels near SFO Airport?
Yes, several hotels are conveniently located near SFO Airport, including options with shuttle services for easy airport access.
What should I know about Fremont?
Fremont offers a perfect blend of culture, history, and modern attractions. The best time to visit is during pleasant weather months for optimal experiences.
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