ONT - FAT

$99 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 10/15. 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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Flights 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

Tue, Aug 19 - Tue, Aug 26
United Airlines Logo
6:00 am - 10:42 amONT-FAT
4h 42m1 stop
United Airlines Logo
2:05 pm - 5:37 pmFAT-ONT
3h 32m1 stop
$197United Airlines
Find Deal
Tue, Oct 21 - Mon, Nov 3
United Airlines Logo
6:36 pm - 9:54 pmONT-FAT
3h 18m1 stop
United Airlines Logo
6:45 am - 12:37 pmFAT-ONT
5h 52m1 stop
$208United Airlines
Find Deal
Thu, Sep 4 - Tue, Sep 9
Southwest Logo
7:00 am - 12:20 pmONT-FAT
5h 20m1 stop
Southwest Logo
5:40 am - 1:10 pmFAT-ONT
7h 30m2 stops
$213Southwest
Find Deal
Tue, Aug 19 - Tue, Aug 26
Southwest Logo
5:45 am - 10:00 amONT-FAT
4h 15m1 stop
Southwest Logo
2:10 pm - 5:30 pmFAT-ONT
3h 20m1 stop
$227Southwest
Find Deal
Tue, Aug 19 - Tue, Aug 26
Southwest Logo
10:20 am - 1:35 pmONT-FAT
3h 15m1 stop
Southwest Logo
2:10 pm - 9:00 pmFAT-ONT
6h 50m2 stops
$232Southwest
Find Deal
Sat, Sep 6 - Sun, Sep 7
United Airlines Logo
6:00 am - 10:42 amONT-FAT
4h 42m1 stop
United Airlines Logo
11:18 am - 5:37 pmFAT-ONT
6h 19m1 stop
$252United Airlines
Find Deal
Thu, Sep 4 - Tue, Sep 9
Southwest Logo
10:20 am - 5:45 pmONT-FAT
7h 25m2 stops
Southwest Logo
5:40 am - 12:00 pmFAT-ONT
6h 20m2 stops
$262Southwest
Find Deal
Fri, Aug 22 - Sun, Aug 24
Alaska Airlines Logo
5:49 pm - 9:06 amONT-FAT
15h 17m1 stop
Alaska Airlines Logo
11:53 am - 9:26 amFAT-ONT
21h 33m1 stop
$332Alaska Airlines
Find Deal
Fri, Aug 22 - Sun, Aug 24
Alaska Airlines Logo
7:10 am - 10:22 pmONT-FAT
15h 12m1 stop
Alaska Airlines Logo
11:53 am - 11:53 pmFAT-ONT
12h 00m1 stop
$342Alaska Airlines
Find Deal
Wed, Sep 10 - Thu, Sep 11
Alaska Airlines Logo
6:00 am - 4:29 pmONT-FAT
10h 29m2 stops
Alaska Airlines Logo
11:53 am - 12:03 amFAT-ONT
12h 10m2 stops
$373Alaska 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 seasonAugust
Cheapest flight$99
Best time to beat the crowds with an average 72% 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 $99 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, 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 $446 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 4241 reviews
8.0Comfort
8.6Crew
7.0Food
8.1Boarding
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.

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 😁

United out of SFO is having issues with catering so none of our meals were loaded on the plane and no offer of compensation for our tickets purchased was offered.

A bit rush for transit. Food and entertainment are not available

The gate was too far away for the connecting flight

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

Information on your arrival and departure airports

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