FCA - ONT

$131 Find Cheap Flights from Kalispell to Ontario - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Kalispell to Ontario departing on 8/24. 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, 0 bags

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Everything you should know

Cheapest round-trip
$277
Typical prices: $353-$662
United Airlines
Wed 8/19Tue 8/25
FCA - ONT • 1 stop
Cheapest one-way
$131
Typical prices: $144-$350
Multiple Airlines
Mon 8/24
FCA - ONT • 1 stop
Top airlines
Cheapest • from $277 (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 Kalispell and Ontario. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $192 (round-trip)
Shortest trip • 5h 09m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 61% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Ontario!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Kalispell to Ontario (FCA-ONT)

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

Wed, Aug 19 - Tue, Aug 25
United Airlines Logo
7:15 am - 12:12 pm
FCA
-
ONT
5h 57m
1 stop
United Airlines Logo
1:56 pm - 7:51 pm
ONT
-
FCA
4h 55m
1 stop
$277United Airlines
Mon, Aug 17 - Fri, Aug 21
Delta Logo
5:15 am - 8:52 am
FCA
-
ONT
4h 37m
1 stop
Delta Logo
9:43 am - 5:29 pm
ONT
-
FCA
6h 46m
1 stop
$317Delta
Thu, Aug 20 - Sun, Aug 23
Delta Logo
5:15 am - 8:52 am
FCA
-
ONT
4h 37m
1 stop
Delta Logo
6:00 am - 11:09 am
ONT
-
FCA
4h 09m
1 stop
$323Delta
Sat, Oct 10 - Sat, Oct 17
Alaska Airlines Logo
7:45 pm - 11:45 pm
FCA
-
ONT
5h 00m
1 stop
Alaska Airlines Logo
6:02 am - 12:21 pm
ONT
-
FCA
5h 19m
1 stop
$339Alaska Airlines
Thu, Aug 20 - Sun, Aug 23
Delta Logo
5:15 am - 8:52 am
FCA
-
ONT
4h 37m
1 stop
Delta Logo
6:00 am - 11:09 am
ONT
-
FCA
4h 09m
1 stop
$341Delta
Tue, Aug 4 - Wed, Aug 12
Delta Logo
5:15 am - 8:52 am
FCA
-
ONT
4h 37m
1 stop
Delta Logo
5:05 pm - 10:53 pm
ONT
-
FCA
4h 48m
1 stop
$398Delta
Wed, Nov 4 - Wed, Nov 11
Alaska Airlines Logo
6:30 am - 11:49 pm
FCA
-
ONT
18h 19m
2 stops
Alaska Airlines Logo
7:15 am - 1:25 pm
ONT
-
FCA
5h 10m
1 stop
$405Alaska Airlines
Thu, Aug 13 - Sat, Aug 22
Delta Logo
12:02 pm - 4:24 pm
FCA
-
ONT
5h 22m
1 stop
Delta Logo
5:05 pm - 10:53 pm
ONT
-
FCA
4h 48m
1 stop
$424Delta
Wed, Aug 19 - Tue, Aug 25
Delta Logo
12:02 pm - 10:45 pm
FCA
-
ONT
11h 43m
2 stops
Delta Logo
6:00 am - 11:09 am
ONT
-
FCA
4h 09m
1 stop
$435Delta
Sat, Oct 10 - Sat, Oct 17
Alaska Airlines Logo
7:45 pm - 11:45 pm
FCA
-
ONT
5h 00m
1 stop
Alaska Airlines Logo
11:29 am - 10:59 pm
ONT
-
FCA
10h 30m
2 stops
$436Alaska Airlines
Booking Insights

KAYAK's insights & trends for Kalispell to Ontario flights

Get data-powered insights and trends into flights from Kalispell 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 Kalispell to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Kalispell 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 Kalispell to Ontario is April, where tickets cost $163 (return) on average. On the other hand, the most expensive months are July and March, where the average cost of round-trip tickets is $1,214 and $639 respectively.

Good to know

Low seasonMarch
Cheapest flight$131
Best time to beat the crowds but there is an average 51% increase in price.
Most popular time to fly and prices are also 11% lower on average.
Flight from Kalispell to Ontario

When to book flights from Kalispell to Ontario

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

  • What is the cheapest flight from Kalispell to Ontario?

    In the last 5 days, the lowest price for a flight from Kalispell to Ontario was $131 for a one-way ticket and $277 for a round-trip.

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

    No

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

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

  • Which airline alliances offer flights from Kalispell to Ontario?

    oneworld, and SkyTeam are the airline alliances operating flights between Kalispell and Ontario, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Kalispell to Ontario, Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from Kalispell to Ontario are Alaska Airlines and Delta. With an average price for the route of $345 and an overall rating of 7.9, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $344 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from Kalispell 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 Kalispell to Ontario.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Kalispell 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 Kalispell 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 Kalispell with another airline. Booking your flights between Kalispell 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 Kalispell 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 Kalispell 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 Kalispell to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Kalispell 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 Kalispell 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
Alaska AirlinesOverall score based on 12607 reviews
8.1Boarding
8.5Crew
7.8Comfort
7.0Entertainment
7.1Food
Airline reviews

The food selections were not good, and entertainment was non existent.

8.0 ExcellentAnonymous, Dec 2025
PDX - ONT
Read more Alaska Airlines reviews

The food selections were not good, and entertainment was non existent.

Staff inside Portland terminal were rude, made us fell rushed and not at all accommodating to seniors. For this alone I will probably never booked from them again.

Loved the staff ease of flying snacks and free movies and WiFi

Flight was very warm. It felt like there was no working AC.

Delayed. It's not our first flight with them either, it's actually our 3rd and all 3 were delayed by hours each time. It was a myriad of delays. On one flight we boarded after being delayed for a little over an hr, only to be told we were going to sit in the plane for another hour before departing. Once landed, we waited another 40ish min to get to our gate. On another flight, flight was delayed just under 3 hrs but atleast we got to wait it out at the airport terminal. Its just a bad experience overall flying with Alaska Airlines.

Flight last minute delayed 2 hours for crew calling out sick

Alaska Airlines needs more bag tag kiosks and bag check-in stations in Seattle. A single entry point for the bag tag kiosks would be helpful. This alleviates lines forming at each individual kiosk, which causes traffic jams for people passing through.

Probably one of the best flights I’ve had! From entering the airport, to boarding to landing.

Finally get a snack n drinks! Just like the good ole days!

My main complaint is specifically with having booked through kayak. Our flight was delayed and I was no longer able to access my boarding pass through the kayak app. Fortunately I had screen capped it. If I had not it would have been critical problem while boarding.

Crew was real good, flight was smooth and came in early.

Love me some Delta. One of the few airlines to recognize and support veterans. Easy boarding, flight was on time and arrived early and the flight attendants were excellent on this flight.

We sat on the runway for over an hour before departure. That was unwelcome.

Flight delayed four separate times. I’m now one hour hours late to landing.

worst flight ever from Delta, it got delayed and kept on delaying..

Everything went smoothly, although the usual gripes about airline travel were still present: the boarding process is inefficient, the snack selection is limited, and so on. Since there was extra space on the flight, the gate agent rearranged many people's seats to put people on the aisles and windows, leaving the middle seats empty, as much as possible, which was pretty great.

While they turned off most cabin lights to allow people to sleep, I was bothered by how bright the side lights still were. It was still quite bright for me in a window seat, when I wish I could have slept!

One of the flight attendants was a little cranky. I appreciated the free wifi and plug to charge my laptop

WiFi didn’t work most of the time. The usb chargers would work only occasionally for 5 mins and wouldn’t charge after that. Had to keep trying repeatedly at each of the seats in the row.

Nothing unusual. It was fine. I hate having to pay extra for my seat.

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

Information on your arrival and departure airports