ONT - FAT

$145 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 7/4. 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

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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Cheap Flight Deals 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.

Recent round-trip flight deals from Ontario to Fresno

KAYAK's recommended round-trip deals from the most popular airlines that fly from Ontario to Fresno.
Discover the best prices for you by selecting your travel dates on KAYAK.
Southwest Logo
8:10 am - 2:00 pmONT-FAT
5h 50m1 stop
Southwest Logo
6:45 pm - 11:00 pmFAT-ONT
4h 15m1 stop
$255Southwest
Find Deal
Thu, May 29 - Mon, Jun 2
Southwest Logo
7:35 pm - 11:05 pmONT-FAT
3h 30m1 stop
Southwest Logo
2:50 pm - 11:00 pmFAT-ONT
8h 10m2 stops
$260Southwest
Find Deal
Thu, May 29 - Mon, Jun 2
United Airlines Logo
1:36 pm - 5:28 pmONT-FAT
3h 52m1 stop
United Airlines Logo
6:47 am - 12:14 pmFAT-ONT
5h 27m1 stop
$261United Airlines
Find Deal
Wed, Jun 11 - Fri, Jun 13
Southwest Logo
4:20 pm - 9:10 pmONT-FAT
4h 50m1 stop
Southwest Logo
7:00 am - 11:35 amFAT-ONT
4h 35m1 stop
$288Southwest
Find Deal
Sat, May 24 - Sun, May 25
United Airlines Logo
1:36 pm - 5:28 pmONT-FAT
3h 52m1 stop
United Airlines Logo
6:05 pm - 10:45 pmFAT-ONT
4h 40m1 stop
$289United Airlines
Find Deal
Tue, May 27 - Wed, Jun 4
Southwest Logo
4:55 pm - 11:05 pmONT-FAT
6h 10m2 stops
Southwest Logo
2:50 pm - 11:00 pmFAT-ONT
8h 10m2 stops
$295Southwest
Find Deal
Thu, May 29 - Mon, Jun 2
Alaska Airlines Logo
7:30 am - 9:57 pmONT-FAT
14h 27m1 stop
Alaska Airlines Logo
2:30 pm - 10:46 pmFAT-ONT
8h 16m2 stops
$308Alaska Airlines
Find Deal
Sat, Jun 7 - Tue, Jun 10
Alaska Airlines Logo
6:00 am - 1:50 pmONT-FAT
7h 50m1 stop
Alaska Airlines Logo
5:06 pm - 10:46 pmFAT-ONT
5h 40m1 stop
$347Alaska Airlines
Find Deal
Tue, Jun 10 - Tue, Jun 10
American Airlines Logo
10:00 am - 11:19 pmONT-FAT
13h 19m2 stops
American Airlines Logo
10:00 am - 9:57 pmFAT-ONT
11h 57m2 stops
$2,200American Airlines
Find Deal
Tue, May 27 - Wed, May 28
American Airlines Logo
6:23 am - 11:20 pmONT-FAT
16h 57m2 stops
American Airlines Logo
6:00 am - 4:13 pmFAT-ONT
10h 13m2 stops
$2,231American Airlines
Find Deal
Fri, Jun 13 - Sun, Jun 15
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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.

What is the cheapest month to fly from Ontario to Fresno?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Fresno, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ontario to Fresno is March, where tickets cost $253 (return) on average. On the other hand, the most expensive months are April and June, where the average cost of round-trip tickets is $520 and $508 respectively.

Good to know

Low seasonApril
High seasonMarch
Cheapest flight$145
Best time to beat the crowds but there is an average 33% increase in price.
Most popular time to fly and prices are also 36% 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 $145 for a one-way ticket and $255 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 $336 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.

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 4294 reviews
8.2Boarding
7.6Entertainment
8.6Crew
8.0Comfort
7.1Food
Airline reviews

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

10.0 ExcellentAnonymous, Apr 2025LGB - SMF
Read more Southwest reviews

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.

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 hell hole of an airport. It is the new LaGuardia. Everything Cobbled together. Security gates closed. Terri directional signage

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

The plane arrived 25 minutes late, and the Wi-Fi was slower than it usually is.

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

The gate was too far away for the connecting flight

Generally good. The aisles have gotten narrower which can slow down boarding. Flight crew was great! Healthier complimentary snacks would be appreciated. Due to earthquake in San Francisco we had to circle in air space for a bit but then had a smooth landing. I laud the flight crew for their patience ;)

The agents was very rude and they charged me $50 for a carry-on bag saying that it was too big and then I saw someone going on a plane with the same size bag as me

For the most part united was a good experience, how ever when they came by with the snacks and water, they completely passed by my wife and I. As we were in separate rows. On a 5 hr flight we were not offered water

Fantastic crew. Flight was delayed at last minute but we were given updates every 20 minutes and the crew was so friendly and considerate. I miss the touch screens on the back of the seats, wish they would bring that back though.

Awful. Worst airline I have ever been on. Crew were among the rudest people I have ever dealt with. United staff members were rude and disrespectful. My flight was delayed, causing me to miss a connecting flight. I understand things happen, but when staff start lying about what actually happened, that is when I have an issue. Just be honest, really it isn’t that hard. I’m being very honest with this review and I don’t find this difficult what so ever. In fact, because of United Airlines, my Christmas holiday was off to a really rocky start. As someone who has traveled across the world, it has only been United that I have had a truly awful experience.

Boarding always seems a bit chaotic. Seat spacing could leave more for leg room.

Good flight. On time. Boarding and seating was easy. Crew were really friendly, yet professional. Bathroom (by cockpit) was small but serviceable. Some the seats were showing some notable wear & tear, but were comfy. Very happy UA customer. TY! 🤛🏽💗

We arrived early and finally made it to our gate almost an hour after.

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

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