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Fresno

$100+ 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 10/18. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FAT
Aug 21 — Aug 281
Thu 8/21
Thu 8/28
1 adult, Economy
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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 August 16, 2025.

Round-trip from

$175
(United Airlines)

One-way from

$100
(Kiwi.com)

Popular in

December

Cheapest in

July

Average price

$96
From Ontario to Fresno Airterminal
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One-way flight from Ontario to Fresno Airterminal
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Highest demand for flights based on searches. 19% potential increase in price ($74 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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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 August 16, 2025.

This United Airlines deal was found by Cheapflights users on 8/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/176:00 amONT - FAT
1 stop4h 42mUnited Airlines
Wed 9/2411:18 amFAT - ONT
1 stop6h 19mUnited Airlines
Deal found 8/14$175
This Kiwi.com deal was found by Cheapflights users on 8/15. 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 9/178:00 amONT - FAT
1 stop25h 24mMultiple Airlines
Wed 9/2410:09 amFAT - ONT
1 stop11h 47mMultiple Airlines
Deal found 8/15$190
This Kiwi.com deal was found by Cheapflights users on 8/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/189:16 amONT - FAT
1 stop11h 52mMultiple Airlines
Mon 9/2210:39 amFAT - ONT
1 stop10h 17mMultiple Airlines
Deal found 8/14$194
This Southwest deal was found by Cheapflights users on 8/14. 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.
Mon 11/175:45 amONT - FAT
1 stop9h 15mSouthwest
Mon 11/174:40 pmFAT - ONT
1 stop4h 05mSouthwest
Deal found 8/14$202
This American Airlines deal was found by Cheapflights users on 8/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/96:10 amONT - FAT
1 stop9h 36mAmerican Airlines
Tue 9/164:38 pmFAT - ONT
1 stop19h 18mAmerican Airlines
Deal found 8/14$203
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 10/310:28 pmONT - FAT
1 stop11h 49mMultiple Airlines
Sun 10/510:17 pmFAT - ONT
1 stop9h 00mMultiple Airlines
Deal found 8/16$207
This Southwest deal was found by Cheapflights users on 8/14. 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.
Fri 12/56:10 amONT - FAT
1 stop4h 10mSouthwest
Sun 12/75:15 amFAT - ONT
1 stop3h 10mSouthwest
Deal found 8/14$219
This United Airlines deal was found by Cheapflights users on 8/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/181:40 pmONT - FAT
1 stop4h 18mUnited Airlines
Wed 11/192:05 pmFAT - ONT
1 stop3h 29mUnited Airlines
Deal found 8/14$235
This Kiwi.com deal was found by Cheapflights users on 8/15. 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 9/308:59 pmONT - FAT
2 stops34h 33mMultiple Airlines
Tue 10/711:07 amFAT - ONT
1 stop9h 35mMultiple Airlines
Deal found 8/15$241
This United Airlines deal was found by Cheapflights users on 8/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/156:38 pmONT - FAT
1 stop3h 15mUnited Airlines
Wed 11/192:05 pmFAT - ONT
1 stop3h 29mUnited Airlines
Deal found 8/14$246
This United Airlines deal was found by Cheapflights users on 8/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/156:00 amONT - FAT
1 stop6h 31mUnited Airlines
Mon 11/172:05 pmFAT - ONT
1 stop3h 29mUnited Airlines
Deal found 8/14$257

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 August 16, 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

Wed 9/17

6:00 am-10:42 am

1 stop4h 42m

Fresno Airterminal

Wed 9/24

11:18 am-5:37 pm

1 stop6h 19m

$175

OntarioFresno

ONT - FAT

ONTFAT

Ontario

Wed 9/17

8:00 am-9:24 am

1 stop25h 24m

Fresno Airterminal

Wed 9/24

10:09 am-9:56 pm

1 stop11h 47m

$190

OntarioFresno

ONT - FAT

ONTFAT

Ontario

Thu 9/18

9:16 am-9:08 pm

1 stop11h 52m

Fresno Airterminal

Mon 9/22

10:39 am-8:56 pm

1 stop10h 17m

$194

OntarioFresno

ONT - FAT

ONTFAT

Ontario

Mon 11/17

5:45 am-3:00 pm

1 stop9h 15m

Fresno Airterminal

Mon 11/17

4:40 pm-8:45 pm

1 stop4h 05m

$202

OntarioFresno

ONT - FAT

ONTFAT

Ontario

Tue 9/9

6:10 am-3:46 pm

1 stop9h 36m

Fresno Airterminal

Tue 9/16

4:38 pm-11:56 am

1 stop19h 18m

$203

OntarioFresno

ONT - FAT

ONTFAT

Ontario

Fri 12/5

6:10 am-10:20 am

1 stop4h 10m

Fresno Airterminal

Sun 12/7

5:15 am-8:25 am

1 stop3h 10m

$219

OntarioFresno

ONT - FAT

ONTFAT

Ontario

Tue 11/18

1:40 pm-5:58 pm

1 stop4h 18m

Fresno Airterminal

Wed 11/19

2:05 pm-5:34 pm

1 stop3h 29m

$235

OntarioFresno

ONT - FAT

ONTFAT

Ontario

Tue 9/30

8:59 pm-7:32 am

2 stops34h 33m

Fresno Airterminal

Tue 10/7

11:07 am-8:42 pm

1 stop9h 35m

$241

OntarioFresno

ONT - FAT

ONTFAT

Ontario

Sat 11/15

6:38 pm-9:53 pm

1 stop3h 15m

Fresno Airterminal

Tue 11/18

6:45 am-12:37 pm

1 stop5h 52m

$246

OntarioFresno

ONT - FAT

ONTFAT

Ontario

Sat 11/15

6:38 pm-9:53 pm

1 stop3h 15m

Fresno Airterminal

Wed 11/19

2:05 pm-5:34 pm

1 stop3h 29m

$246

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/15

Showing 1-10 of 23 results
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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, January is the cheapest month in which you can book a flight from Ontario to Fresno (average of $363). Flying from Ontario to Fresno in June is currently the most expensive (average of $445). 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 August 16, 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 13% 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 August 16, 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
4,246 reviews

Overall

8.0

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Crew

8.6

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
4,246 reviews
Southwest
8.0
Very good
4,246 reviews

Overall

8.0

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Crew

8.6

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
8,916 reviews
Southwest
8.0
Very good
4,246 reviews

Overall

8.0

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Crew

8.6

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.

  • 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 $276. These flights start at 25% 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, January is the cheapest month in which you can book a flight from Ontario to Fresno (average of $363). Flying from Ontario to Fresno in June is currently the most expensive (average of $445). 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

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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 August 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$229Average$351FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$276Average$469FlexibilityNo cancel feeOn-time69%

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