ONT - FAT

$112 Find Cheap Flights from Ontario to Fresno

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Fresno departing on 2/24. 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.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Fresno

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Fresno, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Fresno, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$197
Multiple Airlines
Thu 2/26Sat 2/28
ONT - FAT • 1 stop
Cheapest one-way
$112
Typical prices: $256-$328
Multiple Airlines
Tue 2/24
ONT - FAT • 1 stop
Top airlines
Alaska Airlines
Cheapest • from $303 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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We hope you love your trip to Fresno!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to Fresno (ONT-FAT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Fresno that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Fresno

Thu, Feb 26 - Sat, Feb 28
Multiple Airlines Logo
7:22 pm - 9:47 am
ONT
-
FAT
14h 25m
1 stop
Multiple Airlines Logo
11:07 am - 7:14 pm
FAT
-
ONT
8h 07m
1 stop
$197Multiple Airlines
Fri, Feb 27 - Sun, Mar 1
Multiple Airlines Logo
9:43 pm - 10:17 am
ONT
-
FAT
12h 34m
1 stop
Multiple Airlines Logo
4:08 pm - 9:29 pm
FAT
-
ONT
5h 21m
1 stop
$207Multiple Airlines
Sun, Mar 1 - Sun, Mar 8
Multiple Airlines Logo
10:14 pm - 9:07 am
ONT
-
FAT
10h 53m
1 stop
Multiple Airlines Logo
6:38 pm - 8:06 am
FAT
-
ONT
13h 28m
1 stop
$209Multiple Airlines
Fri, Feb 20 - Sat, Feb 21
Multiple Airlines Logo
8:07 am - 2:15 pm
ONT
-
FAT
6h 08m
1 stop
Multiple Airlines Logo
11:08 am - 7:14 pm
FAT
-
ONT
8h 06m
1 stop
$250Multiple Airlines
Thu, Feb 26 - Sat, Feb 28
Multiple Airlines Logo
7:22 pm - 9:47 am
ONT
-
FAT
14h 25m
1 stop
Multiple Airlines Logo
11:07 am - 11:59 pm
FAT
-
ONT
12h 52m
2 stops
$282Multiple Airlines
Sun, Mar 1 - Sun, Mar 8
Multiple Airlines Logo
6:10 am - 9:07 am
ONT
-
FAT
26h 57m
2 stops
Multiple Airlines Logo
6:38 pm - 8:06 am
FAT
-
ONT
13h 28m
1 stop
$293Multiple Airlines
Wed, Feb 25 - Wed, Mar 18
Alaska Airlines Logo
6:14 am - 10:13 pm
ONT
-
FAT
15h 59m
1 stop
Alaska Airlines Logo
2:33 pm - 11:59 pm
FAT
-
ONT
9h 26m
1 stop
$303Alaska Airlines
Wed, Apr 1 - Fri, Apr 3
Southwest Logo
4:35 pm - 10:50 pm
ONT
-
FAT
6h 15m
1 stop
Southwest Logo
5:15 am - 8:20 am
FAT
-
ONT
3h 05m
1 stop
$308Southwest
Thu, Mar 5 - Mon, Mar 9
Alaska Airlines Logo
4:02 pm - 2:39 pm
ONT
-
FAT
22h 37m
1 stop
Alaska Airlines Logo
3:40 pm - 11:08 am
FAT
-
ONT
19h 28m
1 stop
$313Alaska Airlines
Wed, Apr 1 - Thu, Apr 23
Alaska Airlines Logo
6:00 am - 1:39 pm
ONT
-
FAT
7h 39m
1 stop
Alaska Airlines Logo
2:20 pm - 11:48 pm
FAT
-
ONT
9h 28m
1 stop
$318Alaska Airlines
Booking Insights

KAYAK's insights & trends for Ontario to Fresno flights

Get data-powered insights and trends into flights from Ontario to Fresno to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Ontario to Fresno?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Ontario to Fresno were found on Alaska Airlines ($303) and Southwest ($308).

Which airlines fly non-stop between Ontario and Fresno?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Ontario to Fresno.

There is just one airline that flies from Ontario to Fresno direct and that is United Airlines. The best round-trip deal found from United Airlines for the route is $259.

Find deals

Good to know

Low seasonJuly
Cheapest flight$112
Best time to beat the crowds with an average 82% drop in price.
Most popular time to fly and prices are also 71% lower on average.
Flight from Ontario to Fresno

When to book flights from Ontario to Fresno

Are your dates flexible? Find out the best times to travel from Ontario to Fresno based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ontario to Fresno

  • What is the cheapest flight from Ontario to Fresno?

    In the last 3 days, the lowest price for a flight from Ontario to Fresno was $112 for a one-way ticket and $197 for a round-trip.

  • Do I need a passport to fly between Ontario and Fresno?

    No, a passport isn't needed to fly from Ontario to Fresno. However, local authorities might ask for an official ID.

  • Which aircraft models fly most regularly from Ontario to Fresno?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Fresno?

    Star Alliance is the only airline alliance operating flights between Ontario and Fresno.

  • Which is the best airline for flights from Ontario to Fresno, Southwest or United Airlines?

    The two airlines most popular with KAYAK users for flights from Ontario to Fresno are Southwest and United Airlines. With an average price for the route of $306 and an overall rating of 8.0, Southwest is the most popular choice. United Airlines is also a great choice for the route, with an average price of $406 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Ontario to Fresno?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Fresno.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Fresno?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Fresno from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Fresno?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Fresno with an airline and back to Ontario with another airline. Booking your flights between Ontario and FAT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Fresno?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Fresno from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Ontario to Fresno

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Fresno. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Fresno? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4272 reviews
8.6Crew
7.5Entertainment
8.1Boarding
7.0Food
8.0Comfort
Airline reviews

3 hour delay. Had to change plans and was still delayed.

2.0 MediocreAnonymous, Jan 2026
SFO - SAN
Read more Southwest reviews

3 hour delay. Had to change plans and was still delayed.

The flight crew was extremely rude and especially not helpful when our flight was delayed.

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

Still a fan of open seating. Flight was on schedule and arrived on time. The 737 MAX is very comfortable.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Delays delays delays. Late taking off, late landing, wait for a gate, etc.

Connecting flight is on time and boarding was a breeze!

Very smooth checking in our luggage with a super pleasant SW agent. I enjoyed a fun entertaining movie.

the whole trip was smooth, and as comfortable as flying is these days. flight crew was friendly and very courteous and helpful.

First class ticket gets you a choice of chips or nuts. . Just like economy Southwest. Also no screen in the seats. This is first class???!

Flight arrived 30 min early and bag was waiting at the baggage pickup. United Club HNL was one of the nicest in the system

Yet another flight in which beverage and snack service was skipped. Other that that, firmly mediocre. Landed early, to gate late due to congestion at the gates. Airline's fault or airports fault: unknown.

Teeny tiny bathrooms, crew was not realistic about when we'd arrive.

Unbelievably poor service from flight attendants. They didn’t even do water service on a four hour flight. Just disrespectful.

Flight was late - I was downgraded from first class to coach

United needs to step up their game. Delayed flight leaving Seattle, San Francisco. Older aircraft, not very comfortable.

Plane boarded early a quickly, was mostly full. We left close to on time. And landed early.

7 hours delayed due to operational issues on United’s end. Basically laziness.

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

Information on your arrival and departure airports

Ontario (ONT)
Fresno (FAT)