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$33+ 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 11/25. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — ONT
Nov 19 — Nov 261
Tue 11/19
Tue 11/26
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 November 14, 2024.

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 November 14, 2024.

This Cheapflightsfares deal was found by Cheapflights users on 11/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/251:43 pmSFO - ONT
Nonstop1h 22mFrontier
Mon 11/256:52 pmONT - SFO
Nonstop1h 27mFrontier
Deal found 11/14$61
This Mytrip deal was found by Cheapflights users on 11/14. 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 Mytrip 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 11/14$68
This Frontier deal was found by Cheapflights users on 11/14. 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.
Thu 12/52:28 pmSJC - ONT
1 stop9h 16mFrontier
Mon 12/911:46 amONT - SJC
1 stop4h 32mFrontier
Deal found 11/14$101
This United Airlines deal was found by Cheapflights users on 11/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/108:25 amSFO - ONT
Nonstop1h 28mUnited Airlines
Tue 12/176:00 amONT - SFO
Nonstop1h 26mUnited Airlines
Deal found 11/12$149
This Southwest deal was found by Cheapflights users on 11/13. 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.
Tue 12/1011:20 amSFO - ONT
2 stops8h 20mSouthwest
Wed 12/112:50 pmONT - SFO
1 stop6h 40mSouthwest
Deal found 11/13$161
This eDestinos deal was found by Cheapflights users on 11/13. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/195:30 amOAK - ONT
1 stop25h 39mMultiple Airlines
Thu 12/2610:31 pmONT - OAK
1 stop24h 21mMultiple Airlines
Deal found 11/13$161
This American Airlines deal was found by Cheapflights users on 11/13. 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 11/224:23 pmSTS - ONT
1 stop5h 39mAmerican Airlines
Sun 11/2410:10 amONT - STS
1 stop5h 42mAmerican Airlines
Deal found 11/13$208
This Expedia deal was found by Cheapflights users on 11/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/78:28 amSJC - ONT
2 stops12h 36mMultiple Airlines
Mon 12/911:46 amONT - SJC
1 stop4h 32mMultiple Airlines
Deal found 11/14$211
This Southwest deal was found by Cheapflights users on 11/12. 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.
Tue 12/106:55 amOAK - ONT
Nonstop1h 25mSouthwest
Tue 12/173:15 pmONT - OAK
Nonstop1h 20mSouthwest
Deal found 11/12$218
This Travelocity deal was found by Cheapflights users on 11/13. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/77:00 amSFO - ONT
2 stops14h 04mMultiple Airlines
Wed 12/1112:34 pmONT - SFO
1 stop5h 26mMultiple Airlines
Deal found 11/13$221
This Southwest deal was found by Cheapflights users on 11/14. 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.
Wed 12/255:05 pmSJC - ONT
1 stop4h 20mSouthwest
Wed 1/16:15 amONT - SJC
Nonstop1h 20mSouthwest
Deal found 11/14$227
This Trip.com deal was found by Cheapflights users on 11/14. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/127:29 pmOAK - ONT
1 stop26h 46mAlaska Airlines
Sun 12/157:00 amONT - OAK
1 stop25h 10mAlaska Airlines
Deal found 11/14$233

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 2,752,363 searches. Data last updated November 14, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

San FranciscoOntario

SFO - ONT

SFOONT

San Francisco

Mon 12/16

9:59 pm-11:23 pm

Nonstop1h 24m

Ontario

Thu 12/19

7:47 pm-9:18 pm

Nonstop1h 31m

$57

Santa RosaOntario

STS - ONT

STSONT

Santa Rosa Sonoma County

Thu 11/21

7:00 am-8:26 am

Nonstop1h 26m

Ontario

Sun 11/24

9:11 am-10:44 am

Nonstop1h 33m

$60

San JoseOntario

SJC - ONT

SJCONT

San Jose

Thu 12/5

2:28 pm-11:44 pm

1 stop9h 16m

Ontario

Mon 12/9

11:46 am-4:18 pm

1 stop4h 32m

$101

OaklandOntario

OAK - ONT

OAKONT

Oakland

Thu 12/19

5:30 am-7:09 am

1 stop25h 39m

Ontario

Thu 12/26

10:31 pm-10:52 pm

1 stop24h 21m

$161

San FranciscoOntario

SFO - ONT

SFOONT

San Francisco

Mon 12/9

2:01 pm-6:49 pm

1 stop4h 48m

Ontario

Thu 12/12

4:08 pm-12:11 am

1 stop8h 03m

$185

San FranciscoOntario

SFO - ONT

SFOONT

San Francisco

Sat 12/14

10:35 pm-11:58 pm

Nonstop1h 23m

Ontario

Tue 12/17

3:20 pm-4:53 pm

Nonstop1h 33m

$189

Santa RosaOntario

STS - ONT

STSONT

Santa Rosa Sonoma County

Fri 11/22

4:23 pm-10:02 pm

1 stop5h 39m

Ontario

Sun 11/24

10:10 am-3:52 pm

1 stop5h 42m

$208

San JoseOntario

SJC - ONT

SJCONT

San Jose

Sat 12/7

8:28 am-9:04 pm

2 stops12h 36m

Ontario

Mon 12/9

11:46 am-4:18 pm

1 stop4h 32m

$211

OaklandOntario

OAK - ONT

OAKONT

Oakland

Tue 12/10

6:55 am-8:20 am

Nonstop1h 25m

Ontario

Tue 12/17

3:15 pm-4:35 pm

Nonstop1h 20m

$218

OaklandOntario

OAK - ONT

OAKONT

Oakland

Tue 1/7

10:41 am-10:34 am

1 stop23h 53m

Ontario

Tue 1/14

5:44 pm-8:49 am

1 stop15h 05m

$222

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/13

Showing 1-10 of 36 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, September is the cheapest month in which you can book a flight from San Francisco Bay Area to Ontario (average of $236). Flying from San Francisco Bay Area to Ontario in December is currently the most expensive (average of $298). 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 November 14, 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 November 14, 2024.

The most flights from zzXIH to ONT are scheduled on a Wednesday (12 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (9 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 November 14, 2024.
To help decide which airline to fly from San Francisco Bay Area to Ontario, see what other customers have to say about Southwest, Alaska Airlines and American Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,045 reviews

Comfort

8.1

Food

7.2

Crew

8.7

Entertainment

7.7

Overall

8.1

Boarding

8.3

Reviews

1 / 10

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

Southwest
8.1
Very good
5,045 reviews
Southwest
8.1
Very good
5,045 reviews

Comfort

8.1

Food

7.2

Crew

8.7

Entertainment

7.7

Overall

8.1

Boarding

8.3

Reviews

1 / 10

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

Alaska Airlines
8.0
Very good
9,439 reviews
Southwest
8.1
Very good
5,045 reviews

Comfort

8.1

Food

7.2

Crew

8.7

Entertainment

7.7

Overall

8.1

Boarding

8.3

Reviews

1 / 10

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

Delta
8.0
Very good
8,788 reviews
Southwest
8.1
Very good
5,045 reviews

Comfort

8.1

Food

7.2

Crew

8.7

Entertainment

7.7

Overall

8.1

Boarding

8.3

Reviews

1 / 10

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

Hawaiian Airlines
7.9
Good
2,296 reviews
Southwest
8.1
Very good
5,045 reviews

Comfort

8.1

Food

7.2

Crew

8.7

Entertainment

7.7

Overall

8.1

Boarding

8.3

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
5,045 reviews

Comfort

8.1

Food

7.2

Crew

8.7

Entertainment

7.7

Overall

8.1

Boarding

8.3

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 91 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 $33 on Frontier. Other airlines that offer cheap prices include Avelo Airlines from $34 and United Airlines from $79 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: Copa Airlines (96%), Frontier (89%), Air Canada( 88%).

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

    On average you can expect to pay $170 for a flight from San Francisco Bay Area to Ontario. The cheapest flight overall is $23 while the most popular route, (San Francisco - Ontario) is currently priced at $37.

  • 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, September is the cheapest month in which you can book a flight from San Francisco Bay Area to Ontario (average of $236). Flying from San Francisco Bay Area to Ontario in December is currently the most expensive (average of $298). 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 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 8 airlines flying from San Francisco Bay Area to Ontario

Discover the top 8 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 2,752,363 searches. Data last updated November 14, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$33Average$104FlexibilityNo cancel feeOn-time65%
FrontierCheapest$38Average$105FlexibilityNo cancel feeOn-time62%
DeltaCheapest$45Average$124FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$55Average$335FlexibilityNo cancel feeOn-time75%
Avelo AirlinesCheapest$69Average$81FlexibilityNo cancel feeOn-timeN/A
Breeze AirwaysCheapest$78Average$145FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$98Average$284FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$191Average$269FlexibilityNo cancel feeOn-time63%
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