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Cheap flights from Ontario (ONT) to Fremont, CA from $28

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
ONT — SFO
Jun 11 — Jun 181
From?
To?
Tue 6/11
Tue 6/18
1 adult, Economy
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The best prices from Ontario to Fremont are usually found in April or June, booked 78 days in advance, depart on a Tuesday or Saturday and return on a Monday

Cheap flight deals from Ontario to Fremont

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Fremont (FR8). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 6, 2024.

Popular in

February

Cheapest in

April

Round-trip from

$268

One-way from

$28
High demand for flights, 30% potential price rise
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Best time to find cheap flights, 41% potential price drop
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From Ontario to Fremont
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One-way flight from Ontario to Fremont
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How far in advance should I book a flight from Ontario to Fremont?

Travelers have found it’s best to book a flight 49 days in advance to save up to 71% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 49 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Ontario to Fremont 1-2 weeks in advance for as low as $133, or $188 for flights within the next 24 hours.

What is the cheapest month to fly from Ontario to Fremont?

The best pricing can be found in the month of April. Prices to Fremont from Ontario average $141. You can even find prices in April for less than $141, as users have found deals to Fremont from as low as $38. The month of March appears to be one of the more expensive times to travel to Fremont from Ontario. Flying in the targeted month can save you up to 11%.

What is the cheapest time of day to fly from ONT to FR8?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Fremont as you normally would.

Cheap Ontario to Fremont flights in June & July 2024

Find cheap flight options from Ontario to Fremont specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,050,429 searches. Prices were last updated on June 6, 2024.
Scroll through some of the best deals on flights from Ontario to Fremont in 2024. Check back regularly for other flight deals.
Wed 6/128:08 amONT - SFO
Nonstop1h 28mFrontier
Tue 6/185:45 amSFO - ONT
Nonstop1h 23mFrontier
Deal found 6/5$46
Wed 7/38:19 amONT - SFO
Nonstop1h 28mFrontier
Tue 7/95:45 amSFO - ONT
Nonstop1h 22mFrontier
Deal found 6/6$48
Wed 6/198:09 amONT - SFO
Nonstop1h 28mFrontier
Sat 6/225:45 amSFO - ONT
Nonstop1h 23mFrontier
Deal found 6/5$50
Wed 6/198:09 amONT - SFO
Nonstop1h 28mFrontier
Thu 6/205:45 amSFO - ONT
Nonstop1h 23mFrontier
Deal found 6/5$51
Tue 7/168:07 amONT - SFO
Nonstop1h 26mFrontier
Fri 8/165:15 amSFO - ONT
Nonstop1h 21mFrontier
Deal found 6/5$52
Wed 7/248:07 amONT - SFO
Nonstop1h 26mFrontier
Mon 7/294:40 pmSFO - ONT
Nonstop1h 24mFrontier
Deal found 6/5$53
Sun 7/148:07 amONT - SFO
Nonstop1h 26mFrontier
Sat 7/205:45 amSFO - ONT
Nonstop1h 22mFrontier
Deal found 6/5$54
Sun 6/168:08 amONT - SFO
Nonstop1h 28mFrontier
Tue 6/185:45 amSFO - ONT
Nonstop1h 23mFrontier
Deal found 6/6$55
Thu 6/207:59 amONT - SFO
Nonstop1h 27mFrontier
Tue 6/255:45 amSFO - ONT
Nonstop1h 23mFrontier
Deal found 6/6$56

Ontario to Fremont 2024 flight deals

Discover exclusive flight deals for travel between Ontario and Fremont in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated June 6, 2024.
Scroll through some of the best deals on flights from Ontario to Fremont in 2024. Check back regularly for other flight deals.
Wed 8/217:36 amONT - SFO
Nonstop1h 26mFrontier
Wed 8/285:15 amSFO - ONT
Nonstop1h 21mFrontier
Deal found 6/6$38
Wed 8/217:36 amONT - SFO
Nonstop1h 26mFrontier
Sat 8/245:15 amSFO - ONT
Nonstop1h 21mFrontier
Deal found 6/5$40
Wed 8/147:36 amONT - SFO
Nonstop1h 26mFrontier
Tue 8/205:15 amSFO - ONT
Nonstop1h 21mFrontier
Deal found 6/5$42
Wed 7/107:57 amONT - SFO
Nonstop1h 25mFrontier
Sat 8/106:00 amSFO - ONT
Nonstop1h 25mFrontier
Deal found 6/4$43
Tue 8/137:36 amONT - SFO
Nonstop1h 26mFrontier
Sun 9/15:15 amSFO - ONT
Nonstop1h 21mFrontier
Deal found 6/5$44
Wed 6/128:08 amONT - SFO
Nonstop1h 28mFrontier
Tue 6/185:45 amSFO - ONT
Nonstop1h 23mFrontier
Deal found 6/5$46
Fri 8/98:02 amONT - SFO
Nonstop1h 26mFrontier
Tue 8/135:15 amSFO - ONT
Nonstop1h 21mFrontier
Deal found 6/5$47
Wed 7/38:19 amONT - SFO
Nonstop1h 28mFrontier
Tue 7/95:45 amSFO - ONT
Nonstop1h 22mFrontier
Deal found 6/6$48
Mon 8/52:14 pmONT - SFO
Nonstop1h 26mFrontier
Thu 8/85:45 amSFO - ONT
Nonstop1h 22mFrontier
Deal found 6/5$49

Ontario to Fremont flights leaving soon

Find last-minute flight options from Ontario to Fremont for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated June 6, 2024.
Consider one of these great deals we found on last-minute flights from Ontario to Fremont. Users should be sure to double check the price, date, and time of their last-minute flight.
Wed 6/128:08 amONT - SFO
Nonstop1h 28mFrontier
Tue 6/185:45 amSFO - ONT
Nonstop1h 23mFrontier
Deal found 6/5$46
Wed 6/128:08 amONT - SFO
Nonstop1h 28mFrontier
Wed 6/195:45 amSFO - ONT
Nonstop1h 23mFrontier
Deal found 6/5$48
Wed 6/128:08 amONT - SFO
Nonstop1h 28mFrontier
Thu 6/135:45 amSFO - ONT
Nonstop1h 23mFrontier
Deal found 6/5$53
Sun 6/168:08 amONT - SFO
Nonstop1h 28mFrontier
Tue 6/185:45 amSFO - ONT
Nonstop1h 23mFrontier
Deal found 6/6$55
Thu 6/137:59 amONT - SFO
Nonstop1h 27mFrontier
Tue 6/185:45 amSFO - ONT
Nonstop1h 23mFrontier
Deal found 6/6$56
Thu 6/137:59 amONT - SFO
Nonstop1h 27mFrontier
Thu 6/205:45 amSFO - ONT
Nonstop1h 23mFrontier
Deal found 6/6$58
Sun 6/168:08 amONT - SFO
Nonstop1h 28mFrontier
Fri 6/215:45 amSFO - ONT
Nonstop1h 23mFrontier
Deal found 6/6$60
Sun 6/168:08 amONT - SFO
Nonstop1h 28mFrontier
Wed 6/195:45 amSFO - ONT
Nonstop1h 23mFrontier
Deal found 6/4$61
Wed 6/128:08 amONT - SFO
Nonstop1h 28mFrontier
Sun 6/165:45 amSFO - ONT
Nonstop1h 23mFrontier
Deal found 6/5$66

One-way flights to Fremont from Ontario

Search for one-way flight options from Ontario to Fremont. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated June 6, 2024.
Users traveling one-way from Ontario to Fremont can select one of these great deals. Users can also find round-trip Ontario to Fremont flights by using the search form above.
Sun 8/118:07 amONT - SFO
Nonstop1h 26mFrontier
Deal found 6/5$28
Thu 8/157:36 amONT - SFO
Nonstop1h 26mFrontier
Deal found 6/5$29
Sun 6/168:08 amONT - SFO
Nonstop1h 28mFrontier
Deal found 6/6$30
Thu 7/188:07 amONT - SFO
Nonstop1h 26mFrontier
Deal found 6/5$31
Mon 7/88:02 amONT - SFO
Nonstop1h 26mFrontier
Deal found 6/5$34
Fri 8/98:02 amONT - SFO
Nonstop1h 26mFrontier
Deal found 6/6$36
Sun 6/307:59 amONT - SFO
Nonstop1h 27mFrontier
Deal found 6/6$38
Sun 6/168:08 amONT - SFO
Nonstop1h 28mFrontier
Deal found 6/5$39
Sun 6/168:08 amONT - SFO
Nonstop1h 28mFrontier
Deal found 6/5$40

Find flights from Ontario to Fremont within your budget

Customize your flight search to find flights from Ontario to Fremont that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated June 6, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$44 - $182

Route

Depart

Return

Price

OntarioSan Francisco

ONT - SFO

ONTSFO

Ontario

Tue 8/13

Nonstop1h 26m

San Francisco

Sun 9/1

Nonstop1h 21m

$44

OntarioSan Francisco

ONT - SFO

ONTSFO

Ontario

Wed 6/12

Nonstop1h 28m

San Francisco

Tue 6/18

Nonstop1h 23m

$46

OntarioSan Francisco

ONT - SFO

ONTSFO

Ontario

Fri 8/9

Nonstop1h 26m

San Francisco

Tue 8/13

Nonstop1h 21m

$47

OntarioSan Francisco

ONT - SFO

ONTSFO

Ontario

Wed 7/3

Nonstop1h 28m

San Francisco

Tue 7/9

Nonstop1h 22m

$48

OntarioSan Francisco

ONT - SFO

ONTSFO

Ontario

Mon 8/5

Nonstop1h 26m

San Francisco

Thu 8/8

Nonstop1h 22m

$49

OntarioSan Francisco

ONT - SFO

ONTSFO

Ontario

Tue 7/2

Nonstop1h 28m

San Francisco

Tue 7/9

Nonstop1h 22m

$50

OntarioSan Francisco

ONT - SFO

ONTSFO

Ontario

Wed 6/19

Nonstop1h 28m

San Francisco

Thu 6/20

Nonstop1h 23m

$51

OntarioSan Francisco

ONT - SFO

ONTSFO

Ontario

Tue 7/16

Nonstop1h 26m

San Francisco

Fri 8/16

Nonstop1h 21m

$52

OntarioSan Francisco

ONT - SFO

ONTSFO

Ontario

Fri 6/21

Nonstop1h 28m

San Francisco

Sun 6/23

Nonstop1h 23m

$182

Flights are sorted by cheapest first

Deals found on 6/5

How far ahead should I book a flight from Ontario to Fremont?

Use this chart to determine the optimal time to book a round-trip flight from Ontario to Fremont. Price data was last updated on May 31, 2024.
The best time to book flights from Ontario to Fremont is 78 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Search Deals

What is the cheapest day to fly from Ontario to Fremont?

Use this chart to determine the cheapest time to fly round-trip from Ontario to Fremont. Price data was last updated on June 2, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Ontario to Fremont flight should consider departing on Tuesday evenings when fares are most often at their lowest. Wednesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Best time to book a flight from Ontario to Fremont

Have a flexible travel schedule? Discover the best time to fly to Fremont from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Temperature and rainfall in Fremont by month

Plan your trip to Fremont by taking into account the average temperature and rainfall totals by month.

SFO

Temperature

51.8 - 62.6 °F

If weather is an important factor for your trip to Fremont, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing Fremont

Get insights into the airlines that provide service to Fremont. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Fremont. Reviews last updated June 6, 2024.
To help decide which airline to fly from Ontario to Fremont, see what other customers have to say about Frontier, United Airlines and Southwest. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.2
Very good
5,918 reviews

Entertainment

7.8

Boarding

8.3

Crew

8.7

Comfort

8.1

Overall

8.2

Food

7.3

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Southwest
8.2
Very good
5,918 reviews
Southwest
8.2
Very good
5,918 reviews

Entertainment

7.8

Boarding

8.3

Crew

8.7

Comfort

8.1

Overall

8.2

Food

7.3

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Alaska Airlines
8.1
Very good
9,222 reviews
Southwest
8.2
Very good
5,918 reviews

Entertainment

7.8

Boarding

8.3

Crew

8.7

Comfort

8.1

Overall

8.2

Food

7.3

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

United Airlines
7.4
Good
10,696 reviews
Southwest
8.2
Very good
5,918 reviews

Entertainment

7.8

Boarding

8.3

Crew

8.7

Comfort

8.1

Overall

8.2

Food

7.3

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

American Airlines
7.3
Good
14,227 reviews
Southwest
8.2
Very good
5,918 reviews

Entertainment

7.8

Boarding

8.3

Crew

8.7

Comfort

8.1

Overall

8.2

Food

7.3

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Frontier
6.2
Okay
3,985 reviews
Southwest
8.2
Very good
5,918 reviews

Entertainment

7.8

Boarding

8.3

Crew

8.7

Comfort

8.1

Overall

8.2

Food

7.3

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Fremont. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Fremont?

    Located just 3.1 mi from the city center, Ontario is the airport most travelers will use when flying to Fremont from Ontario. Booking flights from Ontario (ONT) to Fremont should be relatively easy as there are 6 daily outbound flights to Fremont from 8 different airlines.

  • Can I find flights from Ontario to Fremont for under $100 on Cheapflights?

    Yes, there are multiple flights from Ontario to Fremont for under $100. The cheapest flight booked recently is on Frontier for just $44, but on average you can expect to pay $54.

  • Are there nonstop flights from Ontario to Fremont for under $100 on Cheapflights?

    Cheapflights has at least 20 direct flights from Ontario to Fremont under $100. A good price for a nonstop flight from Ontario to Fremont is less than $50.

  • Are there last-minute flights available from Ontario to Fremont for under $100?

    There are currently 20+ open flights from Ontario to Fremont within the next 7 days for less than $100.

  • What days are nonstop flights available from Ontario to Fremont?

    Days when nonstop flights are available for this flight are: Monday, Thursday.

  • How popular is this Ontario to Fremont flight route?

    Within the past month, 120 users have taken a look at flights from Ontario to Fremont.

  • How many flights depart from Ontario to Fremont on average per day?

    2 flight departures from Ontario to Fremont per day on average.
    Morning (6am - Noon) - 100% of flight departures

  • How long is the flight from Ontario to Fremont?

    Departing from Ontario to Fremont will take you 1h 26m. Airlines will cover a distance of 364 mi. Generally, flights for this route are nonstop.

  • What are the most reliable airlines from Ontario to Fremont?

    No one likes to see their flight delayed. When booking a flight from Ontario to Fremont consider choosing United Airlines (76%), Air Canada (73%) or SkyWest Airlines (66%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Ontario to Fremont?

    Looking for the cheapest flight from Ontario to Fremont? While on average our users pay $800, our data indicates the cheapest price to be $19. The most popular route (Ontario - San Francisco), is priced around $46.

  • What does ONT to SFO mean?

    ONT and SFO are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. ONT to SFO refers to a flight route from Ontario Airport to San Francisco Airport. While you’re still figuring out your travel plans, it’s not a bad idea to learn the names and codes of other airports around these areas: San Jose Airport (SJC), Oakland Airport (OAK), Stockton Airport (SCK), Napa County Airport (APC), Concord Buchanan Fld Airport (CCR).

  • Can I find deals for flights from Ontario to Fremont that include extra baggage allowance?

    The amount of baggage you can bring on your Ontario to Fremont flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Ontario to Fremont with specific airlines?

    Yes, Cheapflights allows you to browse and filter Ontario to Fremont flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Ontario to Fremont that include hotel bookings?

    Yes. In addition to deals on Ontario to Fremont flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Fremont?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Fremont.

  • Can I find deals for business class flights from Ontario to Fremont?

    Yes. Cheapflights offers flight deals from Ontario to Fremont by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Ontario to Fremont that allow pets onboard?

    Many airlines flying from Ontario to Fremont offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Ontario to Fremont?

    Yes, you can often find last-minute deals on Ontario to Fremont flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Ontario to Fremont flight deals updated?

    The Ontario to Fremont flight deals you see on this page were last updated on 6/6.

  • What are the most popular airlines that fly from Ontario to Fremont?

    Before booking your flight from Ontario to Fremont check out the most popular airlines for this route: American Airlines, Alaska Airlines or JetBlue.

  • What is the cheapest month to book a flight from Ontario to Fremont?

    Currently, September is the cheapest month in which you can book a flight from Ontario to Fremont (average of $268). Flying from Ontario to Fremont in June is currently the most expensive (average of $385). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Ontario to Fremont
See prices for flight routes from nearby airports that may be better suited for you.

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Top 8 airlines flying from Ontario to Fremont

Discover the top 8 airlines that operate flights from Ontario to Fremont. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated June 6, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$19Average$96FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$37Average$105FlexibilityNo cancel feeOn-time65%
Alaska AirlinesCheapest$45Average$326FlexibilityNo cancel feeOn-time75%
JetBlueCheapest$54Average$84FlexibilityNo cancel feeOn-time62%
DeltaCheapest$65Average$164FlexibilityNo cancel feeOn-timeN/A
Breeze AirwaysCheapest$74Average$136FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$86Average$270FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$158Average$344FlexibilityNo cancel feeOn-time71%
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Newark Airport to San Diego flights
Washington, D.C. to New York flights
San Francisco to Los Angeles flights
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Denver to Las Vegas flights
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Search flights from Ontario to Fremont by cabin class

Find flights from Ontario to Fremont, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

Hourly flight availability from Ontario to Fremont

Find hourly flight availability from Ontario to Fremont. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 6, 2024.
28%of flight departuresEarly morningMidnight to 6 am
21%of flight departuresMorning6 am to noon
44%of flight departuresAfternoonNoon to 6 pm
7%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from Ontario to Fremont

Explore weekly flight availability from Ontario to Fremont. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 6, 2024.
Sunday4daily flights
Monday7daily flights
Tuesday7daily flights
Wednesday7daily flights
Thursday8daily flights
Friday7daily flights
Saturday5daily flights

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