FAT - ONT

$128 Find Cheap Flights from Fresno to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Fresno to Ontario departing on 1/21. 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 Ontario

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Fresno to Ontario, 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 Fresno to Ontario, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$178
Overall average: $272
Multiple Airlines
sáb. 1/31lun. 2/2
FAT - ONT • 1 stop
Cheapest one-way
$128
Multiple Airlines
mié. 1/21
FAT - ONT • 1 stop
When to travel
February
Cheapest • 36% price drop
March
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Ontario!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Fresno to Ontario (FAT-ONT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Fresno to Ontario 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 Fresno to Ontario

sáb., ene. 31 - lun., feb. 2
Multiple Airlines Logo
11:06 am - 6:40 pm
FAT
-
ONT
7h 34m1 stop
Multiple Airlines Logo
3:22 pm - 8:28 pm
ONT
-
FAT
5h 06m1 stop
$178Multiple Airlines
lun., mar. 2 - mar., mar. 17
Multiple Airlines Logo
9:57 am - 5:48 pm
FAT
-
ONT
7h 51m1 stop
Multiple Airlines Logo
4:49 pm - 1:14 pm
ONT
-
FAT
20h 25m1 stop
$179Multiple Airlines
lun., feb. 16 - jue., feb. 19
Multiple Airlines Logo
6:40 pm - 1:11 pm
FAT
-
ONT
18h 31m1 stop
Multiple Airlines Logo
7:22 pm - 9:48 am
ONT
-
FAT
14h 26m1 stop
$189Multiple Airlines
sáb., feb. 14 - mié., feb. 18
Multiple Airlines Logo
11:08 am - 7:14 pm
FAT
-
ONT
8h 06m1 stop
Multiple Airlines Logo
7:17 pm - 3:19 pm
ONT
-
FAT
20h 02m1 stop
$190Multiple Airlines
dom., feb. 15 - jue., feb. 19
Multiple Airlines Logo
4:09 pm - 9:33 pm
FAT
-
ONT
5h 24m1 stop
Multiple Airlines Logo
7:22 pm - 9:48 am
ONT
-
FAT
14h 26m1 stop
$200Multiple Airlines
sáb., feb. 14 - jue., feb. 19
Multiple Airlines Logo
11:08 am - 7:14 pm
FAT
-
ONT
8h 06m1 stop
Multiple Airlines Logo
7:22 pm - 9:48 am
ONT
-
FAT
14h 26m1 stop
$201Multiple Airlines
sáb., feb. 14 - mar., feb. 17
Multiple Airlines Logo
11:08 am - 7:14 pm
FAT
-
ONT
8h 06m1 stop
Multiple Airlines Logo
2:06 pm - 12:18 pm
ONT
-
FAT
22h 12m1 stop
$206Multiple Airlines
lun., mar. 2 - mar., mar. 17
Multiple Airlines Logo
9:57 am - 1:11 pm
FAT
-
ONT
27h 14m1 stop
Multiple Airlines Logo
6:15 am - 1:14 pm
ONT
-
FAT
30h 59m2 stops
$210Multiple Airlines
jue., feb. 12 - mié., feb. 18
Multiple Airlines Logo
6:40 pm - 7:22 am
FAT
-
ONT
12h 42m1 stop
Multiple Airlines Logo
7:17 pm - 3:19 pm
ONT
-
FAT
20h 02m1 stop
$213Multiple Airlines
dom., feb. 15 - dom., feb. 22
Multiple Airlines Logo
4:09 pm - 9:33 pm
FAT
-
ONT
5h 24m1 stop
Multiple Airlines Logo
10:18 pm - 9:03 am
ONT
-
FAT
10h 45m1 stop
$218Multiple Airlines
Booking Insights

KAYAK's insights & trends for Fresno to Ontario flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Fresno to Ontario, 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 Fresno to Ontario is February, where tickets cost $231 (return) on average. On the other hand, the most expensive months are August and May, where the average cost of round-trip tickets is $656 and $579 respectively.

Good to know

Low seasonFebruary
Cheapest flight$128
Best time to beat the crowds with an average 37% drop in price.
Most popular time to fly and prices are also 2% lower on average.
Flight from Fresno to Ontario

When to book flights from Fresno to Ontario

Are your dates flexible? Find out the best times to travel from Fresno to Ontario 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 Fresno to Ontario

  • What is the cheapest flight from Fresno to Ontario?

    In the last 3 days, the lowest price for a flight from Fresno to Ontario was $128 for a one-way ticket and $178 for a round-trip.

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

    A passport is not required to fly from Fresno to Ontario.

  • Which airports will I be using when flying from Fresno to Ontario?

    Fresno and Ontario are both served by 1 main airport. You will leave Fresno from Fresno Airterminal and will be arriving at Ontario.

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

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

  • Which airline alliances offer flights from Fresno to Ontario?

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

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

    The two airlines most popular with KAYAK users for flights from Fresno to Ontario are Southwest and United Airlines. With an average price for the route of $316 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 $357 and an overall rating of 7.4.

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

    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 Fresno to Ontario.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Fresno 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 Fresno to Ontario?

    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 Ontario with an airline and back to Fresno with another airline. Booking your flights between Fresno and ONT 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 Fresno to Ontario?

    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 Ontario from Fresno 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 Fresno to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Fresno to Ontario. 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 Fresno to Ontario? 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 4249 reviews
8.1Boarding
8.0Comfort
7.5Entertainment
8.6Crew
7.0Food
Airline reviews

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

2.0 MediocreMatthew, Jan 2026
DAL - SAN
Read more Southwest reviews

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.

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

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.

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

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

Information on your arrival and departure airports