ONT - FAT

$98 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 9/24. 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

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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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

qua, out 1 - dom, out 5
Multiple Airlines Logo
8:00 am - 1:42 pmONT-FAT
5h 42m1 stop
Multiple Airlines Logo
10:17 pm - 7:17 amFAT-ONT
9h 00m1 stop
$213Multiple Airlines
Find Deal
qui, out 16 - seg, out 20
Multiple Airlines Logo
10:05 am - 9:27 pmONT-FAT
11h 22m1 stop
Multiple Airlines Logo
6:26 pm - 8:42 pmFAT-ONT
26h 16m1 stop
$217Multiple Airlines
Find Deal
sáb, out 4 - dom, out 5
Multiple Airlines Logo
8:00 am - 2:29 pmONT-FAT
6h 29m1 stop
Multiple Airlines Logo
10:17 pm - 7:17 amFAT-ONT
9h 00m1 stop
$218Multiple Airlines
Find Deal
dom, out 26 - ter, out 28
Multiple Airlines Logo
10:47 pm - 7:17 amONT-FAT
8h 30m1 stop
Multiple Airlines Logo
11:07 am - 8:42 pmFAT-ONT
9h 35m1 stop
$224Multiple Airlines
Find Deal
ter, out 14 - ter, out 21
United Airlines Logo
6:36 pm - 11:44 pmONT-FAT
5h 08m1 stop
United Airlines Logo
6:08 pm - 10:52 pmFAT-ONT
4h 44m1 stop
$237United Airlines
Find Deal
sáb, out 18 - qua, out 22
United Airlines Logo
6:36 pm - 11:44 pmONT-FAT
5h 08m1 stop
United Airlines Logo
6:08 pm - 10:52 pmFAT-ONT
4h 44m1 stop
$251United Airlines
Find Deal
sáb, out 18 - qua, out 22
Southwest Logo
1:00 pm - 8:10 pmONT-FAT
7h 10m2 stops
Southwest Logo
10:15 am - 3:35 pmFAT-ONT
5h 20m1 stop
$283Southwest
Find Deal
sáb, out 18 - qua, out 22
Southwest Logo
1:00 pm - 8:10 pmONT-FAT
7h 10m2 stops
Southwest Logo
10:15 am - 5:00 pmFAT-ONT
6h 45m2 stops
$288Southwest
Find Deal
sex, out 24 - seg, out 27
Alaska Airlines Logo
7:43 pm - 3:47 pmONT-FAT
20h 04m1 stop
Alaska Airlines Logo
4:35 pm - 11:05 amFAT-ONT
18h 30m1 stop
$352Alaska Airlines
Find Deal
sáb, out 25 - dom, out 26
Alaska Airlines Logo
1:31 pm - 10:08 pmONT-FAT
8h 37m1 stop
Alaska Airlines Logo
4:35 pm - 11:32 pmFAT-ONT
6h 57m1 stop
$355Alaska Airlines
Find Deal

Everything you should know

Top airlines
United Airlines
Cheapest • from $237 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$213
Multiple Airlines
qua 10/1dom 10/5
ONT - FAT • 1 stop
Cheapest one-way
$98
Typical prices: $299-352
Multiple Airlines
qua 9/24
ONT - FAT • 1 stop
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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!
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$98
Best time to beat the crowds with an average 82% drop in price.
Most popular time to fly and prices are also 72% 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 $98 for a one-way ticket and $213 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, and oneworld are the airline alliances operating flights between Ontario and Fresno, with oneworld being the most commonly used for this route.

  • 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 $351 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 $474 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 4242 reviews
8.6Crew
8.1Boarding
8.0Comfort
7.0Food
7.5Entertainment
Airline reviews

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

10.0 ExcellentGordon, Jul 2025GEG - OAK
Read more Southwest reviews

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.

Fine, but how to board on SW versus othrr airlines, is just lame. Goood staff though and all was solid otherwise.

Was as expected. Crowed planes. Too many carryons delaying takeoff. But the ride only took an hour and saved me a lot of time SFO is a not a great airport.

I will be flying again Southwest Airlines. Friendly crew, comfortable and affordable.

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.

My flight was delayed a very short period of time but they did not hold my connecting flight to San Diego, also through United. So they closed the doors before we got off our plane. They would only have to help the door open for another five to ten minutes. So I missed a court deadline for a manditory mediation settlement conference for my client. I had to get an associate to be there in person and be on the phone with him relaying what he needs to do the entire time. The court was very upset with me and so was my client. United cannot be trusted.

We were given vouchers we couldn’t use with a 5.5 hour delay

Really good 😊 the woman at the gate entrance was a little rude checking in our carry-on but i dont think she worked for the airline, she worked for the airport at sacramento, other than that amazing.

Boarding was mayhem. Late boarding by 15 minutes because of lack of staff (missing 1 flight attendant. We had to wait for an arrival of another plane before we could board). Flight was a little rough, but cannot blame on airlines.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

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

Information on your arrival and departure airports

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