HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news

Cheap flights from California to Ontario (ONT) from $48

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/14. 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.
LAX — ONT
May 6 — May 131
From?
To?
Mon 5/6
Mon 5/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

When is the cheapest time to fly from California to Ontario (CA - ONT)?

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

Cheap Frontier flights from California to Ontario

Explore cheap flight options specifically provided by Frontier for the route between California and Ontario. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,899,487 searches. Data last updated May 1, 2024.
Consider these cheap Frontier flights we've found departing from California to Ontario. Be sure to come back soon if the deals available don't appeal to you at this time.
Sun 5/1210:10 amSFO - ONT
Nonstop1h 29mFrontier
Mon 5/207:39 amONT - SFO
Nonstop1h 28mFrontier
Deal found 4/30$71
Wed 5/1510:15 amSFO - ONT
Nonstop1h 29mFrontier
Mon 5/207:39 amONT - SFO
Nonstop1h 28mFrontier
Deal found 4/30$72
Fri 8/168:28 amSMF - ONT
Nonstop1h 21mFrontier
Sat 8/1710:39 amONT - SMF
Nonstop1h 23mFrontier
Deal found 4/30$73
Thu 5/235:15 amSFO - ONT
Nonstop1h 24mFrontier
Sun 5/267:39 amONT - SFO
Nonstop1h 28mFrontier
Deal found 4/30$74
Sat 5/255:15 amSFO - ONT
Nonstop1h 24mFrontier
Wed 5/297:39 amONT - SFO
Nonstop1h 28mFrontier
Deal found 4/30$75
Fri 7/55:15 amSFO - ONT
Nonstop1h 21mFrontier
Sat 7/67:36 amONT - SFO
Nonstop1h 26mFrontier
Deal found 4/29$76
Fri 6/145:15 amSFO - ONT
Nonstop1h 24mFrontier
Sat 6/157:29 amONT - SFO
Nonstop1h 28mFrontier
Deal found 4/30$77
Sun 5/265:15 amSFO - ONT
Nonstop1h 24mFrontier
Mon 5/277:39 amONT - SFO
Nonstop1h 28mFrontier
Deal found 4/30$78
Sat 6/155:45 amSFO - ONT
Nonstop1h 23mFrontier
Mon 6/177:59 amONT - SFO
Nonstop1h 27mFrontier
Deal found 5/1$79

Cheap American Airlines flights from California to Ontario

Explore cheap flight options specifically provided by American Airlines for the route between California and Ontario. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,899,487 searches. Data last updated May 1, 2024.
To aid your search, here are some of the cheapest American Airlines flights we've found from California to Ontario. Ensure the flight price, dates, time, and airline match your criteria before you book.
Mon 5/612:53 pmRNO - ONT
1 stop5h 55mAmerican Airlines
Thu 5/96:45 amONT - RNO
1 stop5h 15mAmerican Airlines
Deal found 4/30$218
Thu 5/306:00 amRNO - ONT
1 stop5h 47mAmerican Airlines
Thu 6/69:24 amONT - RNO
1 stop6h 23mAmerican Airlines
Deal found 4/30$243
Wed 5/226:02 amSMF - ONT
1 stop5h 45mAmerican Airlines
Wed 5/2912:53 pmONT - SMF
1 stop5h 45mAmerican Airlines
Deal found 4/30$268
Thu 5/3012:43 pmSJC - ONT
1 stop6h 05mAmerican Airlines
Sun 6/26:45 amONT - SJC
1 stop5h 25mAmerican Airlines
Deal found 4/30$269
Wed 5/294:21 pmRNO - ONT
1 stop6h 08mAmerican Airlines
Sun 6/26:45 amONT - RNO
1 stop5h 15mAmerican Airlines
Deal found 4/30$271
Thu 5/234:18 pmSTS - ONT
1 stop6h 11mAmerican Airlines
Sun 5/269:30 amONT - STS
1 stop6h 20mAmerican Airlines
Deal found 4/30$276
Mon 5/136:10 amSJC - ONT
1 stop5h 37mAmerican Airlines
Thu 5/166:45 amONT - SJC
1 stop5h 25mAmerican Airlines
Deal found 4/30$346
Wed 5/156:10 amSJC - ONT
1 stop5h 37mAmerican Airlines
Sat 5/1812:53 pmONT - SJC
1 stop5h 40mAmerican Airlines
Deal found 4/30$361
Fri 5/104:21 pmRNO - ONT
1 stop6h 08mAmerican Airlines
Mon 5/136:45 amONT - RNO
1 stop5h 15mAmerican Airlines
Deal found 5/1$405

Cheap California to Ontario flights in May & June 2024

Find cheap flight options from California to Ontario specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,899,487 searches. Prices were last updated on May 1, 2024.
These are some of the most attractive deals on flights from California to Ontario in 2024. If these deals don't appeal to you, be sure to come back soon for more options.
Thu 5/235:15 amSFO - ONT
Nonstop1h 24mFrontier
Sat 5/257:39 amONT - SFO
Nonstop1h 28mFrontier
Deal found 5/1$89
Sun 5/510:10 amSFO - ONT
Nonstop1h 29mFrontier
Wed 5/87:58 amONT - SFO
Nonstop1h 27mFrontier
Deal found 4/30$90
Thu 5/210:15 amSFO - ONT
Nonstop1h 29mFrontier
Sat 5/187:39 amONT - SFO
Nonstop1h 28mFrontier
Deal found 4/30$91
Sat 5/185:15 amSFO - ONT
Nonstop1h 24mFrontier
Mon 5/207:39 amONT - SFO
Nonstop1h 28mFrontier
Deal found 4/30$92
Tue 5/710:10 amSFO - ONT
Nonstop1h 29mFrontier
Thu 5/97:58 amONT - SFO
Nonstop1h 27mFrontier
Deal found 4/30$93
Fri 5/245:15 amSFO - ONT
Nonstop1h 24mFrontier
Sun 5/267:39 amONT - SFO
Nonstop1h 28mFrontier
Deal found 4/30$94
Sat 5/185:15 amSFO - ONT
Nonstop1h 24mFrontier
Sun 5/197:39 amONT - SFO
Nonstop1h 28mFrontier
Deal found 4/30$96
Wed 5/1510:15 amSFO - ONT
Nonstop1h 29mFrontier
Wed 5/227:45 pmONT - SFO
1 stop4h 56mFrontier
Deal found 4/30$98
Sat 5/118:27 pmSFO - ONT
Nonstop1h 30mFrontier
Tue 5/1410:49 pmONT - SFO
1 stop10h 55mFrontier
Deal found 4/30$99

California to Ontario 2024 flight deals

Discover exclusive flight deals for travel between California and Ontario in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,899,487 searches. Data last updated May 1, 2024.
These are some of the most attractive deals on flights from California to Ontario in 2024. If these deals don't appeal to you, be sure to come back soon for more options.
Fri 5/175:15 amSFO - ONT
Nonstop1h 24mFrontier
Mon 5/207:39 amONT - SFO
Nonstop1h 28mFrontier
Deal found 4/30$80
Wed 7/35:15 amSFO - ONT
Nonstop1h 21mFrontier
Sat 7/67:36 amONT - SFO
Nonstop1h 26mFrontier
Deal found 4/29$81
Fri 6/145:15 amSFO - ONT
Nonstop1h 24mFrontier
Sun 6/167:39 amONT - SFO
Nonstop1h 28mFrontier
Deal found 4/30$82
Wed 5/810:15 amSFO - ONT
Nonstop1h 29mFrontier
Wed 5/157:58 amONT - SFO
Nonstop1h 27mFrontier
Deal found 5/1$83
Fri 5/245:15 amSFO - ONT
Nonstop1h 24mFrontier
Wed 5/297:39 amONT - SFO
Nonstop1h 28mFrontier
Deal found 4/30$84
Sat 5/255:15 amSFO - ONT
Nonstop1h 24mFrontier
Sun 5/267:39 amONT - SFO
Nonstop1h 28mFrontier
Deal found 4/30$85
Thu 7/45:15 amSFO - ONT
Nonstop1h 21mFrontier
Sun 7/77:36 amONT - SFO
Nonstop1h 26mFrontier
Deal found 4/30$87
Sun 6/235:15 amSFO - ONT
Nonstop1h 24mFrontier
Sun 7/147:36 amONT - SFO
Nonstop1h 26mFrontier
Deal found 4/30$88
Thu 5/235:15 amSFO - ONT
Nonstop1h 24mFrontier
Sat 5/257:39 amONT - SFO
Nonstop1h 28mFrontier
Deal found 5/1$89

Non-stop flights to Ontario from California

Discover non-stop flight options from California to Ontario. Find direct flights with no layovers, providing a convenient travel experience. Explore non-stop flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 2,899,487 searches. Data last updated May 1, 2024.
To help reduce your travel time, choose from one of these non-stop flights from California to Ontario. Those looking to potentially save on 1 or 2-stop flights from California to Ontario should utilize the search form at the the top of the page.
Tue 5/1410:10 amSFO - ONT
Nonstop1h 29mFrontier
Sat 5/187:39 amONT - SFO
Nonstop1h 28mFrontier
Deal found 4/30$48
Tue 5/1410:10 amSFO - ONT
Nonstop1h 29mFrontier
Sat 5/187:39 amONT - SFO
Nonstop1h 28mFrontier
Deal found 4/30$50
Wed 5/1510:15 amSFO - ONT
Nonstop1h 29mFrontier
Wed 5/227:39 amONT - SFO
Nonstop1h 28mFrontier
Deal found 4/29$52
Tue 5/215:15 amSFO - ONT
Nonstop1h 24mFrontier
Tue 5/287:39 amONT - SFO
Nonstop1h 28mFrontier
Deal found 4/30$53
Sat 5/118:27 pmSFO - ONT
Nonstop1h 30mFrontier
Tue 5/287:39 amONT - SFO
Nonstop1h 28mFrontier
Deal found 4/29$56
Tue 5/1410:10 amSFO - ONT
Nonstop1h 29mFrontier
Fri 5/177:39 amONT - SFO
Nonstop1h 28mFrontier
Deal found 4/29$58
Sat 5/118:27 pmSFO - ONT
Nonstop1h 30mFrontier
Tue 5/147:53 amONT - SFO
Nonstop1h 27mFrontier
Deal found 4/30$59
Wed 9/118:28 amSMF - ONT
Nonstop1h 21mFrontier
Thu 9/1910:39 amONT - SMF
Nonstop1h 23mFrontier
Deal found 4/30$60
Sun 5/1210:10 amSFO - ONT
Nonstop1h 29mFrontier
Sat 5/187:39 amONT - SFO
Nonstop1h 28mFrontier
Deal found 4/30$60

California to Ontario flights leaving soon

Find last-minute flight options from California to Ontario 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 2,899,487 searches. Data last updated May 1, 2024.
Consider one of these great deals we found on last-minute flights from California to Ontario. Users should be sure to double check the price, date, and time of their last-minute flight.
Sat 5/118:27 pmSFO - ONT
Nonstop1h 30mFrontier
Tue 5/1410:49 pmONT - SFO
1 stop10h 55mFrontier
Deal found 4/30$99
Sat 5/118:27 pmSFO - ONT
Nonstop1h 30mFrontier
Sat 5/1811:17 pmONT - SFO
1 stop8h 26mFrontier
Deal found 5/1$100
Tue 5/710:10 amSFO - ONT
Nonstop1h 29mFrontier
Fri 5/178:56 pmONT - SFO
1 stop11h 25mFrontier
Deal found 4/29$103
Wed 5/82:40 pmSFO - ONT
2 stops7h 20mFrontier
Wed 5/157:58 amONT - SFO
Nonstop1h 27mFrontier
Deal found 5/1$104
Sat 5/118:27 pmSFO - ONT
Nonstop1h 30mFrontier
Mon 5/137:53 amONT - SFO
Nonstop1h 27mFrontier
Deal found 4/30$106
Wed 5/810:15 amSFO - ONT
Nonstop1h 29mFrontier
Fri 5/107:58 amONT - SFO
Nonstop1h 27mFrontier
Deal found 5/1$107
Thu 5/910:15 amSFO - ONT
Nonstop1h 29mFrontier
Mon 5/136:51 pmONT - SFO
1 stop12h 52mFrontier
Deal found 5/1$109
Wed 5/810:15 amSFO - ONT
Nonstop1h 29mFrontier
Tue 5/1412:59 amONT - SFO
1 stop18h 29mFrontier
Deal found 4/30$113
Wed 5/812:23 pmSFO - ONT
2 stops9h 37mFrontier
Thu 5/97:58 amONT - SFO
Nonstop1h 27mFrontier
Deal found 5/1$114

One-way flights to Ontario from California

Search for one-way flight options from California to Ontario. 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 2,899,487 searches. Data last updated May 1, 2024.
Take a look at some of the best available options we've come across on one-way flights from California to Ontario. Users needing a return flight from California to Ontario should utilize the search form above.
Sat 5/185:15 amSFO - ONT
Nonstop1h 24mFrontier
Deal found 4/30$53
Sat 8/38:28 amSMF - ONT
Nonstop1h 21mFrontier
Deal found 4/30$55
Fri 5/245:15 amSFO - ONT
Nonstop1h 24mFrontier
Deal found 4/30$55
Sun 7/145:15 amSFO - ONT
Nonstop1h 21mFrontier
Deal found 4/29$58
Mon 5/610:10 amSFO - ONT
Nonstop1h 29mFrontier
Deal found 5/1$65
Sat 5/48:27 pmSFO - ONT
Nonstop1h 30mFrontier
Deal found 4/30$66
Fri 9/278:28 amSMF - ONT
Nonstop1h 21mFrontier
Deal found 4/30$69
Sun 5/510:10 amSFO - ONT
Nonstop1h 29mFrontier
Deal found 5/1$70
Mon 5/2011:25 amSFO - ONT
1 stop4h 16mFrontier
Deal found 5/1$75

Find flights from California to Ontario within your budget

Customize your flight search to find flights from California 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 2,899,487 searches. Data last updated May 1, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$71 - $243

Route

Depart

Return

Price

San FranciscoOntario

SFO - ONT

SFOONT

San Francisco

Sun 5/12

Nonstop1h 29m

Ontario

Mon 5/20

Nonstop1h 28m

$71

San FranciscoOntario

SFO - ONT

SFOONT

San Francisco

Wed 5/15

Nonstop1h 29m

Ontario

Mon 5/20

Nonstop1h 28m

$72

San FranciscoOntario

SFO - ONT

SFOONT

San Francisco

Thu 5/23

Nonstop1h 24m

Ontario

Mon 5/27

Nonstop1h 28m

$73

Sacramento IntlOntario

SMF - ONT

SMFONT

Sacramento Intl

Fri 8/16

Nonstop1h 21m

Ontario

Sat 8/17

Nonstop1h 23m

$73

San FranciscoOntario

SFO - ONT

SFOONT

San Francisco

Thu 5/23

Nonstop1h 24m

Ontario

Sun 5/26

Nonstop1h 28m

$74

San FranciscoOntario

SFO - ONT

SFOONT

San Francisco

Sat 5/25

Nonstop1h 24m

Ontario

Wed 5/29

Nonstop1h 28m

$75

San FranciscoOntario

SFO - ONT

SFOONT

San Francisco

Fri 7/5

Nonstop1h 21m

Ontario

Sat 7/6

Nonstop1h 26m

$76

Sacramento IntlOntario

SMF - ONT

SMFONT

Sacramento Intl

Tue 5/28

1 stop6h 43m

Ontario

Tue 6/4

1 stop6h 22m

$200

RenoOntario

RNO - ONT

RNOONT

Reno

Thu 5/30

1 stop5h 47m

Ontario

Thu 6/6

1 stop6h 23m

$243

Flights are sorted by cheapest first

Deals found on 4/30

No data available for this route at this time. Please check back soon.

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 May 1, 2024.
To help decide which airline to fly from California to Ontario, see what other customers have to say about Frontier, American Airlines and United Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.2
Very good
6,129 reviews
Check prices

Comfort

8.1

Crew

8.7

Boarding

8.3

Entertainment

7.8

Food

7.3

Overall

8.2

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

Southwest
8.2
Very good
6,129 reviews
Southwest
8.2
Very good
6,129 reviews
Check prices

Comfort

8.1

Crew

8.7

Boarding

8.3

Entertainment

7.8

Food

7.3

Overall

8.2

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

Alaska Airlines
8.1
Very good
9,115 reviews
Southwest
8.2
Very good
6,129 reviews
Check prices

Comfort

8.1

Crew

8.7

Boarding

8.3

Entertainment

7.8

Food

7.3

Overall

8.2

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

Delta
8.1
Very good
10,874 reviews
Southwest
8.2
Very good
6,129 reviews
Check prices

Comfort

8.1

Crew

8.7

Boarding

8.3

Entertainment

7.8

Food

7.3

Overall

8.2

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

Hawaiian Airlines
8.0
Very good
2,324 reviews
Southwest
8.2
Very good
6,129 reviews
Check prices

Comfort

8.1

Crew

8.7

Boarding

8.3

Entertainment

7.8

Food

7.3

Overall

8.2

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

United Airlines
7.4
Good
11,159 reviews
Southwest
8.2
Very good
6,129 reviews
Check prices

Comfort

8.1

Crew

8.7

Boarding

8.3

Entertainment

7.8

Food

7.3

Overall

8.2

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

Related info for your journey

Find useful and relevant information for your journey from California 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 California?

    Located just 3.1 mi from the city center, Ontario (ONT) is the airport most travelers will use when flying to Ontario from California.

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

    Yes, there are multiple flights from California to Ontario for under $100. The cheapest flight booked recently is on Frontier for just $71, but on average you can expect to pay $79.

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

    Cheapflights has at least 20 direct flights from California to Ontario under $100. A good price for a nonstop flight from California to Ontario is less than $61.

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

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

  • What are the most popular routes from California to Ontario?

    When deciding which route to take from California to Ontario consider San Francisco - Ontario, Sacramento Intl - Ontario or San Jose - Ontario as they are the most popular.

  • What does LAX to ONT mean?

    Los Angeles Airport is LAX and Ontario Airport is ONT. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service. San Francisco Airport (SFO), San Diego Airport (SAN), Santa Ana J. Wayne/Orange Cnty Airport (SNA), San Jose Airport (SJC), Sacramento Intl Airport (SMF) are some additional IATA codes for airports related to your trip.

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

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

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

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

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

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

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

    Yes. Cheapflights offers flight deals from California 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.

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

    Many airlines flying from California to Ontario 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 California to Ontario?

    Yes, you can often find last-minute deals on California to Ontario 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 California to Ontario flight deals updated?

    The California to Ontario flight deals you see on this page were last updated on 5/1.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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

Newark to Los Angeles flights
Seattle to Los Angeles flights
John F Kennedy Intl to Los Angeles flights
John F Kennedy Intl to San Francisco flights
Dallas/Fort Worth to Los Angeles flights
Newark to San Francisco flights
Los Angeles to San Francisco flights
O'Hare Intl to Los Angeles flights
Boston to Los Angeles flights
LaGuardia to Los Angeles flights
San Francisco to Los Angeles flights
Reagan-National to Los Angeles flights
Seattle to San Francisco flights
San Jose to Los Angeles flights
Dallas/Fort Worth to Ontario flights
LaGuardia to San Francisco flights
Dulles Intl to Los Angeles flights
Seattle to Santa Ana flights
Seattle to San Diego flights
Newark to Burbank flights
Oakland to Los Angeles flights
Boston to San Francisco flights
John F Kennedy Intl to Ontario flights
Baltimore to Los Angeles flights
Seattle to Ontario flights
Dulles Intl to San Francisco flights
O'Hare Intl to San Francisco flights
Atlanta to Los Angeles flights
Los Angeles to San Jose flights
San Francisco to San Diego flights
Los Angeles to Oakland flights
Portland to Los Angeles flights
Oakland to Burbank flights
Newark to San Diego flights
Miami to Los Angeles flights
Philadelphia to Los Angeles flights
Dallas/Fort Worth to San Francisco flights
Seattle to Burbank flights
Reagan-National to San Francisco flights
San Francisco to Ontario flights
Seattle to Oakland flights
Fort Lauderdale to Los Angeles flights
Seattle to San Jose flights
Baltimore to San Francisco flights
Hobby to Los Angeles flights
Boston to San Diego flights
Austin to Los Angeles flights
Dallas/Fort Worth to Burbank flights
Oakland to Santa Ana flights
George Bush Intcntl to Los Angeles flights

Top 8 airlines flying from California to Ontario

Discover the top 8 airlines that operate flights from California 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 2,899,487 searches. Data last updated May 1, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$34Average$117FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
FrontierCheapest$38Average$113FlexibilityNo cancel feeOn-time62%
Search Frontier flights
JetBlueCheapest$45Average$108FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
DeltaCheapest$45Average$192FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Alaska AirlinesCheapest$54Average$299FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
Breeze AirwaysCheapest$59Average$124FlexibilityNo cancel feeOn-timeN/A
Search Breeze Airways flights
United AirlinesCheapest$100Average$339FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest$179Average$421FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Los Angeles to Manila flights
Syracuse to Orlando flights
Honolulu to Las Vegas flights
Baltimore to Miami flights
Las Vegas to Reno flights
Los Angeles to Newark Airport flights
San Diego to Hawaii flights
Detroit to New Orleans flights
San Francisco to Newark Airport flights
Dallas to Los Angeles flights
Newark Airport to Orlando flights
California to Coolangatta flights

Search flights from California to Ontario by cabin class

Find flights from California to Ontario, 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 California to Ontario

Find hourly flight availability from California 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 May 1, 2024.
12%of flight departuresEarly morningMidnight to 6 am
32%of flight departuresMorning6 am to noon
22%of flight departuresAfternoonNoon to 6 pm
34%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Flights to Saint Peter Jersey
Flights to Kirkwall Arpt
Flights to Skiathos
Flights to Naxos
Flights to Ningbo Lishe Intl
Flights to Edremit/Korfez
Flights to Bourgas
Flights to Bodø
Flights to Pellston Emmet County
Flights to Cornwall Newquay
Flights to Ordu/Giresun
Flights to Batumi
Flights to Mason City
Flights to Biarritz Parme
Flights to Zakynthos Dionsios Salomos
Flights to Cortez Montezuma County
Flights to Clermont-Ferrand Aulnat
Flights to Nevsehir
Flights to Hyannis Barnstable
Flights to Girona Costa Brava
Flights to Kagoshima
Flights to Perugia Sant Egidio
Flights to Oran Es Senia
Flights to Chios

Fly with Cheapflights

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

How does Cheapflights help users find flights from California to Ontario?

When you search for this flight from California to Ontario, 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 California to Ontario?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Ontario from California.

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

Certainly. Search results for flights to Ontario from California shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes! Start tracking prices for California to Ontario flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines