FAT - ONT

$93 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 6/16. 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
$291
Typical prices: $504-$372
Multiple Airlines
Fri 7/24Tue 7/28
FAT - ONT • 1 stop
Cheapest one-way
$93
Typical prices: $240-$252
Multiple Airlines
Tue 6/16
FAT - ONT • 1 stop
Top airlines
Cheapest • from $327 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Fresno and Ontario. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $395 (round-trip)
Shortest trip • 3h 44m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 80% price drop
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

Fri, Jul 24 - Tue, Jul 28
Multiple Airlines Logo
6:31 pm - 8:03 am
FAT
-
ONT
13h 32m
1 stop
Multiple Airlines Logo
1:38 pm - 9:47 am
ONT
-
FAT
20h 09m
1 stop
$291Multiple Airlines
Mon, Nov 9 - Thu, Nov 12
Southwest Logo
5:30 am - 10:40 am
FAT
-
ONT
5h 10m
1 stop
Southwest Logo
8:05 am - 3:00 pm
ONT
-
FAT
6h 55m
1 stop
$327Southwest
Fri, Jul 24 - Tue, Jul 28
Southwest Logo
5:25 am - 11:20 am
FAT
-
ONT
5h 55m
2 stops
Southwest Logo
6:35 pm - 11:15 pm
ONT
-
FAT
4h 40m
1 stop
$332Southwest
Fri, Jul 24 - Tue, Jul 28
Southwest Logo
5:25 am - 12:10 pm
FAT
-
ONT
6h 45m
2 stops
Southwest Logo
4:35 pm - 10:20 pm
ONT
-
FAT
5h 45m
2 stops
$337Southwest
Thu, Jun 25 - Mon, Jun 29
Multiple Airlines Logo
6:50 pm - 7:51 pm
FAT
-
ONT
25h 01m
1 stop
Multiple Airlines Logo
3:34 pm - 1:16 pm
ONT
-
FAT
21h 42m
1 stop
$347Multiple Airlines
Thu, Jun 25 - Mon, Jun 29
Southwest Logo
6:25 am - 12:05 pm
FAT
-
ONT
5h 40m
2 stops
Southwest Logo
6:35 pm - 12:05 am
ONT
-
FAT
5h 30m
2 stops
$357Southwest
Thu, Jun 25 - Mon, Jun 29
Southwest Logo
5:35 pm - 12:05 am
FAT
-
ONT
6h 30m
2 stops
Southwest Logo
4:40 pm - 12:05 am
ONT
-
FAT
7h 25m
1 stop
$358Southwest
Fri, Jun 19 - Sun, Jun 21
Multiple Airlines Logo
3:31 pm - 7:51 pm
FAT
-
ONT
4h 20m
1 stop
Multiple Airlines Logo
11:58 am - 1:17 pm
ONT
-
FAT
25h 19m
1 stop
$376Multiple Airlines
Tue, Jul 14 - Wed, Jul 15
United Airlines Logo
6:40 pm - 10:37 pm
FAT
-
ONT
3h 57m
1 stop
United Airlines Logo
6:00 am - 9:39 am
ONT
-
FAT
3h 39m
1 stop
$377United Airlines
Fri, Jun 19 - Sun, Jun 21
Southwest Logo
4:35 pm - 8:10 pm
FAT
-
ONT
3h 35m
1 stop
Southwest Logo
4:35 pm - 11:05 pm
ONT
-
FAT
6h 30m
2 stops
$382Southwest
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.

How much is a round-trip flight from Fresno to Ontario?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Fresno to Ontario departing in July.

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 January, where tickets cost $81 (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 seasonJanuary
Cheapest flight$93
Best time to beat the crowds with an average 80% drop in price.
Most popular time to fly with an average 1% increase in price.
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 $93 for a one-way ticket and $291 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 $374 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 $411 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.
7.9
SouthwestOverall score based on 4270 reviews
8.6Crew
8.1Boarding
8.0Comfort
7.5Entertainment
7.0Food
Airline reviews

The first time I flew in the extra legroom section. It was difficult to notice a difference. I had bad luck with my neighbors. The crew was okay. Southwest has reduced the live TV options.

4.0 OkayAnonymous, May 2026
MDW - LAX
Read more Southwest reviews

The first time I flew in the extra legroom section. It was difficult to notice a difference. I had bad luck with my neighbors. The crew was okay. Southwest has reduced the live TV options.

No gluten free snacks. Seats felt worn or bare bones even though it was a new 737 MAX 8.

Plane was clean and comfortable. Flight attendants and gate staff were professional, friendly and efficient. Boarding and deplaning were orderly and efficient. All in all, the typical excellent Southwest experience.

Not having a five hour delay with little notice! The crew was very kind, though, and just as tired as we passengers were. The flight didn't depart until nearly 1 am...and no reason was ever given.

This leg was much better, but we did have to have a 3 hour lay o er after coming from a very exhausting hiccup with our flight from BNA to Den

The Air hostess were very rude on my flight from Houston to Austin . Their regular communication itself felt a they are shouting at people.

Boarding was easy. The seats are small and fairly uncomfortable

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

No food or entertainment, just a quick 40 minute flight. A little bumpy due to Santa Ana winds but pilot has no control over that. Good flight and landing!

Good but I prefer choose your own seat. With the new assigned seats they should board from the back I see no advantage to this new boarding. Just like every other airline

6 1/2 hours from Tampa to SFO on a Boeing 737. Cramped. No Service. No real food. One pass for coffee at the beginning and a second pass THREE hours later. And check-in in Tampa was nasty even by United standards. And I am at almost TWO million miles on United. It's a non-stop. But terrible service.

First class ticket gets you no seat back entertainment? I have to bring my own laptop to see a movie? And most of their movies have ADS? No thank you. Worse: Tiny snacks only on a 2 hr flight?

Late plane. Only one crew on the ground so we b had to wait for Denver flight to come in, board, and depart. At 78 yrs of age I was not pleased trying to get my connection. What really made me angry was the notification you sent me to hurry up or I would miss my connection. Why tell me to hurry up when you got me in late. It was not a good way of treating customers.

No complaints other than luggage carousel was incorrectly guiding passengers to the wrong carousel on the screen.

Outstanding service, efficient & friendly crew, flight was safe, comfortable & on time

The crew was great. Very friendly and responsive. The plane was old, small and tight. We ran out of overhead space and I had to check. Middle seat was particularly tight.

The flight was delayed from take off because only one runway was operational in San Francisco.

Several missed and almost missed connections. It felt like everything was being patched together last minute without enough resources and it ended up being an extremely stressful experience that basically ruined our weekend on the west coast. What a waste.

Packed in plane small uncomfortable seats elbow to elbow nobody wants to be in that situation for the money they paid

Checking in united could not figure out my star alliance gold. Baggage did not get marked priority and didn't receive boarding passes. When got to SFO lounge personal fixed everything Immediately

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

Information on your arrival and departure airports