FCA - ONT

$106 Find Cheap Flights from Kalispell 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 Kalispell to Ontario departing on 6/3. 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 Kalispell 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 Kalispell to Ontario, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$217
Delta
Fri 3/27Sat 4/4
FCA - ONT • 1 stop
Cheapest one-way
$106
Typical prices: $278-$305
United Airlines
Wed 6/3
FCA - ONT • 1 stop
Top airlines
Delta
Cheapest • from $217 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
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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 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

Fri, Mar 27 - Sat, Apr 4
Delta Logo
5:56 pm - 11:51 pm
FCA
-
ONT
6h 55m
1 stop
Delta Logo
6:00 am - 11:21 am
ONT
-
FCA
4h 21m
1 stop
$217Delta
Thu, Apr 30 - Mon, May 4
Alaska Airlines Logo
1:43 pm - 7:05 pm
FCA
-
ONT
6h 22m
1 stop
Alaska Airlines Logo
10:39 am - 6:48 pm
ONT
-
FCA
7h 09m
1 stop
$239Alaska Airlines
Mon, May 4 - Fri, May 8
Alaska Airlines Logo
6:35 am - 9:45 am
FCA
-
ONT
28h 10m
1 stop
Alaska Airlines Logo
7:59 pm - 6:48 pm
ONT
-
FCA
21h 49m
1 stop
$255Alaska Airlines
Fri, May 22 - Tue, May 26
United Airlines Logo
10:47 am - 5:18 pm
FCA
-
ONT
7h 31m
1 stop
United Airlines Logo
5:00 am - 1:33 pm
ONT
-
FCA
7h 33m
1 stop
$258United Airlines
Thu, Feb 5 - Mon, Feb 9
Delta Logo
12:25 pm - 4:15 pm
FCA
-
ONT
4h 50m
1 stop
Delta Logo
6:00 am - 11:35 am
ONT
-
FCA
4h 35m
1 stop
$269Delta
Fri, May 22 - Tue, May 26
Delta Logo
5:25 am - 9:01 am
FCA
-
ONT
4h 36m
1 stop
Delta Logo
5:05 pm - 11:02 pm
ONT
-
FCA
4h 57m
1 stop
$274Delta
Thu, Apr 30 - Mon, May 4
Alaska Airlines Logo
1:43 pm - 7:05 pm
FCA
-
ONT
6h 22m
1 stop
Alaska Airlines Logo
7:59 pm - 6:48 pm
ONT
-
FCA
21h 49m
1 stop
$282Alaska Airlines
Fri, Mar 27 - Mon, Apr 6
Alaska Airlines Logo
12:52 pm - 5:09 pm
FCA
-
ONT
5h 17m
1 stop
Alaska Airlines Logo
6:00 am - 12:12 pm
ONT
-
FCA
5h 12m
1 stop
$283Alaska Airlines
Fri, Feb 27 - Tue, Mar 3
Alaska Airlines Logo
7:53 pm - 11:08 am
FCA
-
ONT
16h 15m
1 stop
Alaska Airlines Logo
6:14 am - 12:12 pm
ONT
-
FCA
4h 58m
1 stop
$284Alaska Airlines
Fri, May 22 - Tue, May 26
Delta Logo
5:25 am - 9:01 am
FCA
-
ONT
4h 36m
1 stop
Delta Logo
5:05 pm - 11:02 pm
ONT
-
FCA
4h 57m
1 stop
$289Delta
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.

How much is a round-trip flight from Kalispell 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 Kalispell to Ontario departing in March.

Good to know

Low seasonApril
Cheapest flight$106
Best time to beat the crowds with an average 23% drop 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 3 days, the lowest price for a flight from Kalispell to Ontario was $106 for a one-way ticket and $217 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?

    SkyTeam is the only airline alliance operating flights between Kalispell and Ontario.

  • 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 airline 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
DeltaOverall score based on 8087 reviews
8.5Crew
8.1Boarding
7.8Entertainment
7.9Comfort
7.2Food
Airline reviews

I usually get upgraded so my experience is usually amazing. I did not get upgraded this time - which was fine - but the wifi had issues, the monitors were going in & out, & (though not Delta's fault) one of the gentlemen next to me desperately needed a shower.

4.0 OkayLauren, Jan 2026
ATL - SFO
Read more Delta reviews

I usually get upgraded so my experience is usually amazing. I did not get upgraded this time - which was fine - but the wifi had issues, the monitors were going in & out, & (though not Delta's fault) one of the gentlemen next to me desperately needed a shower.

I really liked the legroom. I am 6’4”.a at For some reason our seats were not together and using the app to fix it didn’t work. Passengers were nice enough to move for us but you should absolutely ensure a parent sits with their child.

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

The crew took good care of us. The flight from ATL to SFO is a longer one, and there were multiple beverage offerings. I like the 757's that Delta uses. Good airplane that is comfortable. I do wish Delta would separate Priority boarding from the better seats. I would gladly take a smaller seat in an open row than be jammed into Comfort just to get priority boarding, just to make sure I don't have to check a bag.

Gate agent rushed to fill hot jetway with crowd so it took over 12 minutes to go from gate to plane. Just like a discount airline Pooly prepared cabin and third time that claim of rough air prevented any cabin service. Friends on a Southwest flight at similar time had service.

I was uncomfortably cold on the plane. Other than that it was uneventful and therefore as enjoyable as a plane ride can be.

Food was surprisingly good but the WiFi was not great

My flight was extremely cold. I had a jacket and a cover was left in each seat. The cover was extremely thin and I have a disability, fibromyalgia and arthrithis and AC air is the worst. I closed my vent and my husbands vent and it still was frigid. I asked the attendant if I could get another cover and she quickly almost dismissively and totally unconcerned stating, (I quote) (one per chair) and walked off so quickly that I didn't get a chance to explain to her that I literally have adisability. I didnt want to make a seen so I set on that flight for over 5 hours in pain, joints locking up and extremely uncomfortable. When my fibromyalgia flares up my joints not only ache but they will lock up also and it takes me days to get back to my regular self even though I take medication for it. I felt like it would not have hurt anyone at all for her to just give me an extra cover because I'm sure they have all types of medical issues in people that fly every day.

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

Information on your arrival and departure airports