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$34+ Cheap flights from San Francisco Bay Area to Ontario (ONT)

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 1/2. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — ONT
Dec 29 — Jan 51
Sun 12/29
Sun 1/5
1 adult, Economy
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Cheap flight deals from San Francisco Bay Area to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco Bay Area (zzXIH) to Ontario (ONT). 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 December 24, 2024.

Round-trip from

$63
(Cheapflightsfares)

One-way from

$36
(Cheapflightsfares)
From San Francisco Bay Area to Ontario
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One-way flight from San Francisco Bay Area to Ontario
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Find flight deals from San Francisco Bay Area to Ontario

Cheapest flights from San Francisco Bay Area to Ontario
Explore the most affordable flight options available from San Francisco Bay Area to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 24, 2024.

This Frontier deal was found by Cheapflights users on 12/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/302:29 pmSFO - ONT
Nonstop1h 22mFrontier
Mon 1/612:00 pmONT - SFO
Nonstop1h 29mFrontier
Deal found 12/23$109
This CheapOair deal was found by Cheapflights users on 12/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/267:00 amSTS - ONT
Nonstop1h 26mAvelo Airlines
Sun 12/299:11 amONT - STS
Nonstop1h 33mAvelo Airlines
Deal found 12/23$175
This Gotogate deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/297:26 pmSJC - ONT
1 stop11h 43mFrontier
Mon 12/3012:59 amONT - SJC
1 stop9h 21mFrontier
Deal found 12/22$207
This Southwest deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2612:50 pmSFO - ONT
2 stops8h 15mSouthwest
Sun 1/265:00 amONT - SFO
1 stop5h 15mSouthwest
Deal found 12/22$455
This American Airlines deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2512:45 pmSJC - ONT
1 stop3h 56mAmerican Airlines
Fri 12/274:25 pmONT - SJC
1 stop6h 24mAmerican Airlines
Deal found 12/22$518
This Southwest deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/266:45 amSJC - ONT
1 stop4h 20mSouthwest
Thu 1/25:05 pmONT - SJC
Nonstop1h 15mSouthwest
Deal found 12/22$519
This American Airlines deal was found by Cheapflights users on 12/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/274:26 pmSTS - ONT
1 stop5h 36mAmerican Airlines
Sun 12/2910:02 amONT - STS
1 stop5h 54mAmerican Airlines
Deal found 12/23$536
This Southwest deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/263:50 pmOAK - ONT
1 stop5h 15mSouthwest
Sun 12/298:35 pmONT - OAK
1 stop3h 30mSouthwest
Deal found 12/22$576
This Alaska Airlines deal was found by Cheapflights users on 12/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/277:32 pmOAK - ONT
1 stop14h 13mAlaska Airlines
Mon 1/277:00 amONT - OAK
1 stop25h 49mAlaska Airlines
Deal found 12/23$592
This Alaska Airlines deal was found by Cheapflights users on 12/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2712:49 pmSJC - ONT
1 stop11h 10mAlaska Airlines
Mon 1/274:06 pmONT - SJC
1 stop7h 21mAlaska Airlines
Deal found 12/23$655
This Orbitz deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2612:40 pmSJC - ONT
1 stop11h 19mMultiple Airlines
Thu 1/28:52 pmONT - SJC
2 stops16h 02mMultiple Airlines
Deal found 12/22$661
This Alaska Airlines deal was found by Cheapflights users on 12/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/3010:37 amSTS - ONT
2 stops13h 22mAlaska Airlines
Tue 12/3110:40 amONT - STS
1 stop22h 52mAlaska Airlines
Deal found 12/23$847

Find flights from San Francisco Bay Area to Ontario within your budget

Customize your flight search to find flights from San Francisco Bay Area to Ontario 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 2,558,603 searches. Data last updated December 24, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

San FranciscoOntario

SFO - ONT

SFOONT

San Francisco

Sun 3/2

8:06 am-9:34 am

Nonstop1h 28m

Ontario

Sun 3/16

8:26 am-10:02 am

Nonstop1h 36m

$58

Santa RosaOntario

STS - ONT

STSONT

Santa Rosa Sonoma County

Thu 2/13

7:00 am-8:26 am

Nonstop1h 26m

Ontario

Sun 2/16

9:11 am-10:44 am

Nonstop1h 33m

$83

San JoseOntario

SJC - ONT

SJCONT

San Jose

Thu 1/9

1:11 pm-11:44 pm

1 stop10h 33m

Ontario

Sat 1/11

8:04 am-4:23 pm

1 stop8h 19m

$100

San FranciscoOntario

SFO - ONT

SFOONT

San Francisco

Sat 1/11

4:50 pm-6:19 pm

Nonstop1h 29m

Ontario

Sun 1/12

6:15 am-7:46 am

Nonstop1h 31m

$117

San FranciscoOntario

SFO - ONT

SFOONT

San Francisco

Fri 1/24

11:00 am-6:13 pm

2 stops7h 13m

Ontario

Sun 1/26

6:45 am-8:20 am

Nonstop1h 35m

$140

San JoseOntario

SJC - ONT

SJCONT

San Jose

Wed 1/29

1:10 pm-8:13 pm

1 stop7h 03m

Ontario

Sat 2/1

8:04 am-4:21 pm

1 stop8h 17m

$193

San FranciscoOntario

SFO - ONT

SFOONT

San Francisco

Sat 2/1

8:20 am-5:04 pm

1 stop8h 44m

Ontario

Tue 2/4

11:14 am-7:16 pm

1 stop8h 02m

$202

OaklandOntario

OAK - ONT

OAKONT

Oakland

Mon 1/13

6:50 am-8:15 am

Nonstop1h 25m

Ontario

Wed 1/15

6:00 am-7:25 am

Nonstop1h 25m

$208

San JoseOntario

SJC - ONT

SJCONT

San Jose

Mon 1/6

5:15 pm-6:30 pm

Nonstop1h 15m

Ontario

Wed 1/8

8:30 am-9:50 am

Nonstop1h 20m

$213

OaklandOntario

OAK - ONT

OAKONT

Oakland

Tue 1/21

10:41 am-5:04 pm

1 stop6h 23m

Ontario

Wed 1/22

11:14 am-8:49 am

1 stop21h 35m

$242

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/23

Showing 1-10 of 33 results
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Best time to book a flight from San Francisco Bay Area to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from San Francisco Bay Area 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.

Travel insights for flights from San Francisco Bay Area to Ontario

Get recent, data-driven insights about flights from San Francisco Bay Area to Ontario including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from San Francisco Bay Area to Ontario?

Currently, August is the cheapest month in which you can book a flight from San Francisco Bay Area to Ontario (average of $246). Flying from San Francisco Bay Area to Ontario in March is currently the most expensive (average of $317). 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.

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

Find hourly flight availability from San Francisco Bay Area to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 24, 2024.

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

Weekly flight availability from San Francisco Bay Area to Ontario

Explore weekly flight availability from San Francisco Bay Area to Ontario. 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 December 24, 2024.

The most flights from zzXIH to ONT are scheduled on a Monday (11 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (3 on average).

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated December 24, 2024.
To help decide which airline to fly from San Francisco Bay Area to Ontario, see what other customers have to say about American Airlines, Avelo Airlines and United Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,765 reviews

Food

7.2

Overall

8.1

Crew

8.7

Comfort

8.1

Boarding

8.2

Entertainment

7.7

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Southwest
8.1
Very good
4,765 reviews
Southwest
8.1
Very good
4,765 reviews

Food

7.2

Overall

8.1

Crew

8.7

Comfort

8.1

Boarding

8.2

Entertainment

7.7

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Alaska Airlines
8.0
Very good
9,555 reviews
Southwest
8.1
Very good
4,765 reviews

Food

7.2

Overall

8.1

Crew

8.7

Comfort

8.1

Boarding

8.2

Entertainment

7.7

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Delta
8.0
Very good
8,588 reviews
Southwest
8.1
Very good
4,765 reviews

Food

7.2

Overall

8.1

Crew

8.7

Comfort

8.1

Boarding

8.2

Entertainment

7.7

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Avelo Airlines
7.5
Good
74 reviews
Southwest
8.1
Very good
4,765 reviews

Food

7.2

Overall

8.1

Crew

8.7

Comfort

8.1

Boarding

8.2

Entertainment

7.7

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

United Airlines
7.4
Good
9,009 reviews
Southwest
8.1
Very good
4,765 reviews

Food

7.2

Overall

8.1

Crew

8.7

Comfort

8.1

Boarding

8.2

Entertainment

7.7

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Related info for your journey

Find useful and relevant information for your journey from San Francisco Bay Area to Ontario. 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 into for flights to Ontario from San Francisco Bay Area?

    Ontario (ONT) is the airport you will fly into if you book a flight from San Francisco Bay Area to Ontario. It is only a 3.1 mi journey from Ontario (ONT) to Ontario’s city center.

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

    The San Francisco Bay Area to Ontario flight path was viewed by 100 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines to fly from San Francisco Bay Area to Ontario one-way?

    One-way options have recently been found by users for as low as $36 on Frontier. Other airlines that offer cheap prices include United Airlines from $59 and Avelo Airlines from $65 one-way.

  • What are the most popular routes from San Francisco Bay Area to Ontario?

    The most popular flight routes from San Francisco Bay Area to Ontario are San Francisco - Ontario, San Jose - Ontario and Oakland - Ontario.

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

    Before booking your flight to Ontario from San Francisco Bay Area, check out the most reliable airlines to get you to your destination on time: Emirates (83%), United Airlines (82%), SkyWest Airlines( 82%).

  • What are the cheapest flights from San Francisco Bay Area to Ontario?

    On average you can expect to pay $212 for a flight from San Francisco Bay Area to Ontario. The cheapest flight overall is $30 while the most popular route, (San Francisco - Ontario) is currently priced at $38.

  • Can I find deals for flights from San Francisco Bay Area to Ontario that include hotel bookings?

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

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

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

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

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

  • What is the cheapest month to book a flight from San Francisco Bay Area to Ontario?

    Currently, August is the cheapest month in which you can book a flight from San Francisco Bay Area to Ontario (average of $246). Flying from San Francisco Bay Area to Ontario in March is currently the most expensive (average of $317). 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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Alternative routes for San Francisco Bay Area to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from San Francisco Bay Area to Ontario

Discover the top 9 airlines that operate flights from San Francisco Bay Area to Ontario. 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 2,558,603 searches. Data last updated December 24, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$37Average$101FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$37Average$106FlexibilityNo cancel feeOn-time65%
DeltaCheapest$45Average$115FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$55Average$313FlexibilityNo cancel feeOn-time75%
Avelo AirlinesCheapest$57Average$81FlexibilityNo cancel feeOn-timeN/A
Breeze AirwaysCheapest$78Average$150FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$98Average$284FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$191Average$282FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$256Average$521FlexibilityNo cancel feeOn-time71%
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