ONT - FAT

$87 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 12/3. 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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Everything you should know

Cheapest round-trip
$212
Multiple Airlines
Mon 12/1Mon 12/8
ONT - FAT • 1 stop
Cheapest one-way
$87
Overall average: $328
Multiple Airlines
Wed 12/3
ONT - FAT • 1 stop
Top airlines
Alaska Airlines
Cheapest • from $264 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
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

Mon, Dec 1 - Mon, Dec 8
Multiple Airlines Logo
5:06 pm - 11:16 amONT-FAT
18h 10m1 stop
Multiple Airlines Logo
10:12 pm - 9:17 pmFAT-ONT
23h 05m1 stop
$212Multiple Airlines
Find Deal
Thu, Nov 20 - Sun, Nov 23
Multiple Airlines Logo
6:30 am - 9:11 amONT-FAT
26h 41m1 stop
Multiple Airlines Logo
4:11 pm - 9:06 pmFAT-ONT
4h 55m1 stop
$215Multiple Airlines
Find Deal
Wed, Nov 19 - Thu, Nov 20
Multiple Airlines Logo
8:00 am - 7:56 amONT-FAT
23h 56m1 stop
Multiple Airlines Logo
4:11 pm - 9:06 pmFAT-ONT
4h 55m1 stop
$216Multiple Airlines
Find Deal
Sat, Dec 6 - Sun, Dec 7
Alaska Airlines Logo
6:00 am - 10:06 pmONT-FAT
16h 06m1 stop
Alaska Airlines Logo
4:38 pm - 11:19 amFAT-ONT
18h 41m1 stop
$264Alaska Airlines
Find Deal
Mon, Dec 15 - Tue, Dec 16
United Airlines Logo
6:00 am - 10:14 amONT-FAT
4h 14m1 stop
United Airlines Logo
6:40 am - 12:17 pmFAT-ONT
5h 37m1 stop
$281United Airlines
Find Deal
Mon, Dec 15 - Tue, Dec 16
Southwest Logo
2:05 pm - 9:10 pmONT-FAT
7h 05m2 stops
Southwest Logo
4:40 pm - 8:45 pmFAT-ONT
4h 05m1 stop
$286Southwest
Find Deal
Mon, Dec 15 - Tue, Dec 16
Southwest Logo
3:15 pm - 9:10 pmONT-FAT
5h 55m2 stops
Southwest Logo
8:10 am - 4:50 pmFAT-ONT
8h 40m2 stops
$291Southwest
Find Deal
Sat, Dec 6 - Sun, Dec 7
Alaska Airlines Logo
6:00 am - 10:06 pmONT-FAT
16h 06m1 stop
Alaska Airlines Logo
4:38 pm - 11:29 pmFAT-ONT
6h 51m1 stop
$294Alaska Airlines
Find Deal
Thu, Jan 1 - Mon, Jan 5
Hawaiian Airlines Logo
7:00 am - 2:08 pmONT-FAT
7h 08m1 stop
Hawaiian Airlines Logo
4:26 pm - 12:14 amFAT-ONT
7h 48m1 stop
$349Hawaiian Airlines
Find Deal
Tue, Dec 2 - Tue, Dec 9
United Airlines Logo
6:00 am - 10:14 amONT-FAT
4h 14m1 stop
United Airlines Logo
1:32 pm - 5:37 pmFAT-ONT
4h 05m1 stop
$359United Airlines
Find Deal
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.

What’s the cheapest day of the week to fly from Ontario to Fresno?

The average price of all round-trip flights from Ontario to Fresno clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Ontario to Fresno, look for departures on Saturdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Fresno, Saturday is the cheapest day to fly and Tuesday is the most expensive.

Good to know

Low seasonJuly
Cheapest flight$87
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 $87 for a one-way ticket and $212 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 $377 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 4237 reviews
8.1Boarding
8.0Comfort
7.5Entertainment
8.6Crew
7.0Food
Airline reviews

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.

8.0 ExcellentGreg, Oct 2025OAK - BUR
Read more Southwest reviews

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.

First time traveling on Southwest since bag fees were implemented. Usual good service. Just more expensive now.

It was a perfect flight in all aspects! Both legs!

Boarding process, crew were good. But the seats were so uncomfortable that was all I could focus on. I literally had to sit forward so that all 3 of us could fit in row. I will try to avoid Southwest in the future for any flights over 60 minutes.

Great flight, 47 passengers on a 180 seat plane. Stewardess was pleasant and cheerful.

Great experience flying Southwest. The crew was really kind and helpful, and very friendly with our toddler.

Plane late from DC to Austin 30 minutes. Crew made up much of the time enroute to San Diego.

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

Flight was timely, relatively comfortable, with decent entertainment and food served. Only problem encountered was with the free messaging which I highly appreciate, but it did not work from iphone to non-iphones.

The internet service I paid for didn’t work at all and the flight crew was not very friendly.

Subject: Formal Complaint: Discriminatory and Unprofessional Conduct – Request for Immediate Action & Compensation Dear [Airline Customer Relations Team], I am writing to file a formal complaint regarding my recent travel experience with [Airline], which was by far the worst I have ever encountered. What occurred was not only unprofessional, but in several instances discriminatory, unsafe, and unacceptable. On the first leg of my trip, I arrived only four minutes past check-in. Instead of making any attempt to resolve the matter, your representative flatly denied me boarding and made me wait while she attended to passengers who arrived after me. By the time a manager intervened, it was too late to board, costing me time, money, and unnecessary frustration. The second leg of my trip (Chicago–San Francisco) raised even more serious concerns. From the outset, it was apparent that the staff—particularly two attendants—prioritized Caucasian passengers while dismissing African American and minority passengers. • When a Caucasian passenger in the exit row refused to comply with federal safety requirements, I, as a first responder, immediately offered to switch seats and assume the responsibility. My offer was blatantly ignored, and instead, a Caucasian passenger seated further up was chosen. This was discriminatory and deeply insulting, especially as I was actively de-escalating the situation that could have delayed the flight further. • During a lengthy tarmac delay of over 90 minutes, passengers were given conflicting and unreasonable instructions that created unnecessary distress and tension. • Throughout the flight, a visibly intoxicated passenger directly in front of me was disruptive, rude to others, failed to comply with seatbelt and electronic device rules, and yet faced no enforcement from the crew. In stark contrast, I was singled out for repeated compliance checks even though I was following every rule. This unequal treatment was so obvious that multiple passengers around me spoke up in my defense. This pattern of behavior demonstrated a clear lack of professionalism, disregard for passenger safety, and discriminatory treatment. I expect far better from an airline of your stature. As a paying customer subjected to this unacceptable treatment, I am formally requesting: 1. A full investigation into the conduct of the staff on both flights. 2. A written apology acknowledging the discriminatory and unprofessional behavior I endured. 3. Appropriate compensation for the distress, inconvenience, and mishandling of my travel. If this matter is not addressed promptly and thoroughly, I will have no choice but to escalate my complaint further, including filing with the U.S. Department of Transportation and sharing my experience through other channels. I trust [Airline] will take this complaint seriously and provide a timely resolution.

Check in was quick and easy during early hours. Flight was on time, and customer services was a plus.

The flight was comfortable with the exit row and great service

Plane was crowded and even when we hit altitude, the plane was hot, not enough air flow.

1. when we went to check in, our 2 first class seats had been CANCELED and the flight was sold out. This was done without our prior knowledge. It was all we could do to restore one first class seat for my wife and I flew economy. 2, Our flight home was scheduled to leave at 10:30 pm. Due to tsunami warnings, the roads were closed and our flight status was uncertain as to whether it would leave as scheduled. It was announced that it would now leave at 11:20 pm and the roads were now open since the tsunami had come and gone. We made a mad dash to the airport and checked in. Delays were announced at 12:30 pm, 1:30 am, 2:30 am and at 3:30 am it was canceled. Since this was a flight due to natural (tsunami) causes, there was no compensation. We were told to return at 1:00 pm the next day and our baggage would be kept on the plane since the same plane was going to leave at 1:00 pm. We had to return to our hotel for the rest of the night. The same plane did not leave at 1:00 pm and our baggage was gone! All in all, it was a miserable performance by UA. Information was hard to obtain and no one knew what was going on and what was going to happen. Hundreds of passengers slept on the floor, chairs, etc. No food and no water was made available to the passengers. It was a situation where UA could care less what was going on. As a one million mile flyer, I had not experienced anything like this before and it was hugely disappointing!

Boarded plane and then delayed 1.5 hours while on the plane

Horrific. They missed my connecting flight to San Diego. I didn’t get there until Monday at 9am when I had a mandatory court settlement conference scheduled at 6am since we had parties on the east coast. This caused many issues. All because United apparently forgot to hold the doors open until my flight landed that only had a 10 minute delay. This was the last flight to Southern California. So I couldn’t even rent a car to finish the trip. United cannot be trusted when traveling on specific days and times since weather didn’t have anything to do with the delays.

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

Information on your arrival and departure airports

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