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Cheap flights from Ontario to San Francisco

ONT — SFO
29 May — 5 Jun1
1 adult
Wed 29/5
Wed 5/6

Cheap flight deals from Ontario to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to San Francisco (SFO). 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 24 May 2024.

Popular in

February

Cheapest in

April

Average price

£94

Round-trip from

£415
High demand for flights, 30% potential price rise
Best time to find cheap flights, 41% potential price drop
Average for round-trip flights in May 2024
From Ontario to San Francisco

What is the cheapest day to fly round-trip from Ontario to San Francisco?

Travelers have found that booking a Tuesday departure is the best way to save up to 494% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.

How far in advance should I book a flight from Ontario to San Francisco?

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 San Francisco 1-2 weeks in advance for as low as £105, or £148 for flights within the next 24 hours.

What is the cheapest month to fly from Ontario to San Francisco?

April is one of the best times of the year to fly to San Francisco from Ontario. Prices for April average £111 per person but you can even find prices for as low as £30. The most expensive prices can be found in the month of March. Opting for a April flight can save you 11% on your journey compared to booking in March

When is the cheapest time to fly from Ontario to San Francisco (ONT - SFO)?

When flying from Ontario to San Francisco, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

When is the best time to book a flight from Ontario to San Francisco?

Use this chart to determine the optimal time to book a return flight from Ontario to San Francisco. Price data was last updated on 22 May 2024.
The best time to book flights from Ontario to San Francisco 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.
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When is the cheapest time to fly from Ontario to San Francisco?

Use this chart to determine the cheapest time to fly return from Ontario to San Francisco. Price data was last updated on 19 May 2024.
Morning
Midday
Afternoon
Evening
All times are departure.
Travellers seeking maximum savings on their Ontario to San Francisco flight should consider departing on Wednesday mornings when fares are most often at their lowest. Tuesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
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Best time to book a flight from Ontario to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Ontario with our price prediction graph.
Estimated return 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 San Francisco by month

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

SFO

Temperature

11 - 17 °C

Related info for your journey

Find useful and relevant information for your journey from Ontario to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What days are direct flights available from Ontario to San Francisco?

    Direct flights can be found on the following days: Sunday, Monday, Tuesday, Wednesday, Friday, Saturday.

  • How popular is this Ontario to San Francisco flight route?

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

    On average, you can expect to see 14 flights from Ontario to San Francisco a day.
    Early Morning (Midnight to 6am) - 21% of flight departures
    Afternoon (Midday - 6pm) - 57% of flight departures
    Evening (6pm - Midnight) - 21% of flight departures

  • What are the most reliable airlines from Ontario to San Francisco?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Ontario to San Francisco on time: United Airlines (78%), SkyWest Airlines (68%), Air Canada (66%).

  • What does ONT to SFO mean?

    This is defined as Ontario Airport (ONT) and San Francisco Airport (SFO). Codes like San Francisco Airport are often used to just call airports uniquely.

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

    The amount of baggage you can bring on your Ontario to San Francisco 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 San Francisco with specific airlines?

    Yes, Cheapflights allows you to browse and filter Ontario to San Francisco 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 San Francisco that include hotel bookings?

    Yes. In addition to deals on Ontario to San Francisco flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Ontario to San Francisco?

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

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

    Yes. Cheapflights offers flight deals from Ontario to San Francisco 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 San Francisco that allow pets onboard?

    Many airlines flying from Ontario to San Francisco 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 San Francisco?

    Yes, you can often find last-minute deals on Ontario to San Francisco 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.

  • When is the best time to book a flight from Ontario to San Francisco?

    Currently, February is the cheapest month in which you can book a flight from Ontario to San Francisco (average of £528). Flying from Ontario to San Francisco in July is currently the most expensive (average of £754). 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.

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Browse thousands of different options on Cheapflights for your next trip

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Search flights from Ontario to San Francisco by cabin class

Find flights from Ontario to San Francisco, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Hourly flight availability from Ontario to San Francisco

Find hourly flight availability from Ontario to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 24 May 2024.
40%of flight departuresEarly morningMidnight to 6 am
60%of flight departuresMorning6 am to noon
0%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Midday
6 PM

Weekly flight availability from Ontario to San Francisco

Explore weekly flight availability from Ontario to San Francisco. 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 24 May 2024.
Monday7daily flights
Tuesday7daily flights
Wednesday7daily flights
Thursday8daily flights
Friday7daily flights
Saturday5daily flights
Sunday4daily flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ontario to San Francisco?

When you search for this flight from Ontario to San Francisco, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Ontario to San Francisco?

Cheapflights simply makes it quick and affordable to book flights from Ontario to San Francisco by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Ontario to San Francisco with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Ontario to San Francisco, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Ontario to San Francisco become cheaper?

Of course! You can now track prices for flights from Ontario to San Francisco and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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