HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Fresno

$163+ Cheap flights from Ontario to Fresno (ONT - FAT)

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 2/19. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FAT
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Fresno with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Ontario to Fresno

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Fresno (FAT). 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 October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$213
(Kiwi.com)

One-way from

$171
(Trip.com)

Popular in

September

Cheapest in

July

Average price

$264
Provider with most accurate pricing for Ontario-Fresno Airterminal flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Fresno Airterminal flights.
Search Deals
From Ontario to Fresno Airterminal
Search Deals
One-way flight from Ontario to Fresno Airterminal
Search Deals
High demand for flights, 6% potential price rise
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Find flight deals from Ontario to Fresno

Cheapest flights from Ontario to Fresno
Explore the most affordable flight options available from Ontario to Fresno. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/203:31 pmONT - FAT
1 stop22h 08mMultiple Airlines
Sun 11/2310:27 pmFAT - ONT
1 stop15h 59mMultiple Airlines
Deal found 10/29$213
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/216:25 amONT - FAT
1 stop8h 52mMultiple Airlines
Sun 11/2310:27 pmFAT - ONT
1 stop22h 39mMultiple Airlines
Deal found 10/29$252
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/245:06 pmONT - FAT
1 stop22h 04mMultiple Airlines
Thu 11/271:29 pmFAT - ONT
1 stop7h 37mMultiple Airlines
Deal found 10/29$255
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/255:06 pmONT - FAT
1 stop15h 40mMultiple Airlines
Thu 11/271:29 pmFAT - ONT
1 stop7h 37mMultiple Airlines
Deal found 10/29$270
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/226:30 amONT - FAT
1 stop7h 09mMultiple Airlines
Sun 11/2310:27 pmFAT - ONT
1 stop15h 59mMultiple Airlines
Deal found 10/29$274
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/266:30 amONT - FAT
1 stop11h 07mMultiple Airlines
Thu 11/2710:06 amFAT - ONT
1 stop4h 20mMultiple Airlines
Deal found 10/29$294
This United Airlines deal was found by Cheapflights users on 10/28. 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.
Sat 12/66:41 pmONT - FAT
1 stop3h 12mUnited Airlines
Sun 12/71:32 pmFAT - ONT
1 stop4h 05mUnited Airlines
Deal found 10/28$309
This Southwest deal was found by Cheapflights users on 10/28. 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.
Sat 12/61:40 pmONT - FAT
2 stops6h 30mSouthwest
Sun 12/75:15 amFAT - ONT
1 stop3h 10mSouthwest
Deal found 10/28$324
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/67:44 pmONT - FAT
1 stop11h 32mMultiple Airlines
Sun 11/910:24 pmFAT - ONT
1 stop8h 53mMultiple Airlines
Deal found 10/29$337

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Fresno 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 October 30, 2025.
Use the filters below to find and compare flights from Ontario to Fresno that are best for you.

Fly from

Ontario

Fly to

Fresno

Route

Depart

Return

Price

OntarioFresno

ONT - FAT

ONTFAT

Ontario

Thu 11/20

3:31 pm-1:39 pm

1 stop22h 08m

Fresno Airterminal

Sun 11/23

10:27 pm-2:26 pm

1 stop15h 59m

$213

OntarioFresno

ONT - FAT

ONTFAT

Ontario

Sat 12/6

6:41 pm-9:53 pm

1 stop3h 12m

Fresno Airterminal

Sun 12/7

1:32 pm-5:37 pm

1 stop4h 05m

$309

OntarioFresno

ONT - FAT

ONTFAT

Ontario

Sat 12/6

1:40 pm-8:10 pm

2 stops6h 30m

Fresno Airterminal

Sun 12/7

5:15 am-8:25 am

1 stop3h 10m

$324

OntarioFresno

ONT - FAT

ONTFAT

Ontario

Fri 12/5

6:00 am-3:44 pm

1 stop9h 44m

Fresno Airterminal

Sat 12/6

7:39 am-8:03 pm

1 stop12h 24m

$362

OntarioFresno

ONT - FAT

ONTFAT

Ontario

Mon 11/24

9:59 pm-3:10 pm

2 stops17h 11m

Fresno Airterminal

Thu 11/27

1:29 pm-9:06 pm

1 stop7h 37m

$370

OntarioFresno

ONT - FAT

ONTFAT

Ontario

Wed 12/17

6:00 am-10:06 pm

1 stop16h 06m

Fresno Airterminal

Sat 12/20

2:45 pm-11:59 pm

1 stop9h 14m

$372

OntarioFresno

ONT - FAT

ONTFAT

Ontario

Fri 12/5

7:33 pm-3:44 pm

1 stop20h 11m

Fresno Airterminal

Sun 12/7

4:38 pm-11:19 am

1 stop18h 41m

$372

OntarioFresno

ONT - FAT

ONTFAT

Ontario

Wed 1/14

7:00 am-3:40 pm

2 stops8h 40m

Fresno Airterminal

Sun 1/18

4:34 pm-10:59 am

1 stop18h 25m

$401

OntarioFresno

ONT - FAT

ONTFAT

Ontario

Thu 2/19

6:00 am-12:24 pm

1 stop6h 24m

$163

OntarioFresno

ONT - FAT

ONTFAT

Ontario

Thu 2/26

1:45 pm-8:48 pm

1 stop7h 03m

$176

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 19 results
1
2

Compare providers for flights from Ontario to Fresno

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Fresno in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Fresno flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Fresno flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Ontario-Fresno flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Fresno flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Fresno flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ontario to Fresno

Have a flexible travel schedule? Discover the best time to fly to Fresno 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.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Fresno

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

Currently, July is the cheapest month in which you can book a flight from Ontario to Fresno (average of $58). Flying from Ontario to Fresno in May is currently the most expensive (average of $230). 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 ONT to FAT?

Find hourly flight availability from Ontario to Fresno. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 30, 2025.

A simple way to save on the total cost of your ticket is to fly from Ontario to Fresno in the morning. If you’re flexible enough to do this you can expect to save up to 12% on your trip compared to booking a flight at noon.

Reviews of airlines servicing Fresno

Get insights into the airlines that provide service to Fresno. 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 Fresno. Reviews last updated October 30, 2025.
Peruse reviews from past customers who have flown with Southwest and United Airlines from Ontario to Fresno to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Comfort

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Comfort

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,998 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Comfort

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

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

  • How long is the flight from Ontario to Fresno?

    A quick flight from Ontario to Fresno can take about 3h 12m. United Airlines provides one of the quickest options available for as low as $309. Ontario and Fresno are separated by a distance of 222 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Ontario to Fresno round-trip?

    Currently priced at $229, Southwest will fly you from Ontario to Fresno and back. In addition to Southwest, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on United Airlines for as low as $239. These flights start at 26% lower than the current average price 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Fresno 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 Ontario to Fresno?

    Currently, July is the cheapest month in which you can book a flight from Ontario to Fresno (average of $58). Flying from Ontario to Fresno in May is currently the most expensive (average of $230). 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

Traveling to a place near Fresno?

Book flights to Fresno if you plan to visit one of these locations
Madera
Kingsburg
Oakhurst
Clovis

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 Ontario to Fresno

See prices for flight routes from nearby airports that may be better suited for you.
San Francisco to Los Angeles flights
Los Angeles to San Francisco flights
San Francisco to Las Vegas flights
San Francisco to Ontario flights
San Francisco to Santa Ana flights
Los Angeles to Las Vegas flights
Santa Ana to San Francisco flights
San Jose to Los Angeles flights
Burbank to Las Vegas flights
San Jose to Las Vegas flights
Ontario to San Francisco flights
Los Angeles to Sacramento flights
Ontario to Las Vegas flights
Santa Ana to Las Vegas flights
Los Angeles to San Jose flights
Sacramento to Los Angeles flights
Burbank to San Francisco flights
Oakland to Las Vegas flights
Sacramento to Las Vegas flights
San Francisco to San Diego flights
San Diego to San Francisco flights
San Diego to Las Vegas flights
San Francisco to Burbank flights
San Jose to Ontario flights
San Francisco to Palm Springs flights
Las Vegas to Los Angeles flights
San Jose to Santa Ana flights
Ontario to Sacramento flights
Reno to Las Vegas flights
Sacramento to Ontario flights
Ontario to San Jose flights
Fresno to Las Vegas flights
San Jose to San Diego flights
Las Vegas to San Francisco flights
San Diego to San Jose flights
Las Vegas to Burbank flights
Los Angeles to Reno flights
Stockton to Las Vegas flights
Sacramento to Santa Ana flights
Santa Ana to Sacramento flights
Las Vegas to Santa Ana flights
Santa Ana to San Jose flights
Sacramento to San Diego flights
Las Vegas to Ontario flights
Palm Springs to San Francisco flights
San Francisco to Long Beach flights
Santa Ana to Oakland flights
Oakland to San Diego flights
Las Vegas to San Diego flights
Reno to Los Angeles flights

Top 2 airlines flying from Ontario to Fresno

Discover the top 2 airlines that operate flights from Ontario to Fresno. 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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$229Average$377FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$239Average$446FlexibilityNo cancel feeOn-time69%

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.