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$111+ Cheap flights from Kalispell to Ontario (FCA - ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
FCA — ONT
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
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Cheap flight deals from Kalispell to Ontario

Cheapest flights from Kalispell to Ontario
Explore the most affordable flight options available from Kalispell to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 27, 2026.

This Alaska Airlines deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/306:35 am
FCA
-
ONT
1 stop8h 57m
Alaska Airlines
Mon 5/46:00 am
ONT
-
FCA
1 stop5h 03m
Alaska Airlines
Deal found 1/27$239
This Delta deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/216:10 pm
FCA
-
ONT
1 stop6h 34m
Delta
Fri 4/246:00 am
ONT
-
FCA
1 stop4h 23m
Delta
Deal found 1/26$256
This Delta deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/305:05 am
FCA
-
ONT
2 stops9h 34m
Delta
Mon 5/45:05 pm
ONT
-
FCA
1 stop5h 22m
Delta
Deal found 1/27$259
This Delta deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/225:25 am
FCA
-
ONT
1 stop4h 36m
Delta
Tue 5/266:00 am
ONT
-
FCA
1 stop5h 56m
Delta
Deal found 1/25$265
This Delta deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/95:25 am
FCA
-
ONT
1 stop4h 36m
Delta
Tue 6/165:05 pm
ONT
-
FCA
1 stop4h 57m
Delta
Deal found 1/27$277
This Delta deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/95:25 am
FCA
-
ONT
1 stop4h 36m
Delta
Fri 6/125:05 pm
ONT
-
FCA
1 stop4h 57m
Delta
Deal found 1/27$281
This Delta deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/95:25 am
FCA
-
ONT
1 stop4h 36m
Delta
Sun 6/145:05 pm
ONT
-
FCA
1 stop4h 57m
Delta
Deal found 1/27$308
This Delta deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/85:25 am
FCA
-
ONT
1 stop4h 36m
Delta
Tue 6/165:05 pm
ONT
-
FCA
1 stop4h 57m
Delta
Deal found 1/27$318

Find flight deals from Kalispell to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Kalispell (FCA) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$239
(Alaska Airlines)

One-way from

$111
(CheapOair)

Popular in

January

Cheapest in

April

Average price

$597
Provider with most accurate pricing for Kalispell Glacier Park-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Kalispell Glacier Park-Ontario flights.
Search Deals
From Kalispell Glacier Park to Ontario
Search Deals
One-way flight from Kalispell Glacier Park to Ontario
Search Deals
Highest demand for flights based on searches. 29% potential increase in price ($137 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Kalispell to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 27, 2026.
Use the filters below to find and compare flights from Kalispell to Ontario that are best for you.

Fly from

Kalispell

Fly to

Ontario

Route

Depart

Return

Price

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Thu 4/30

1:43 pm-7:05 pm

1 stop6h 22m

Ontario

Mon 5/4

7:59 pm-12:03 pm

1 stop15h 04m

$239

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Fri 5/22

5:25 am-9:01 am

1 stop4h 36m

Ontario

Tue 5/26

6:00 am-12:56 pm

1 stop5h 56m

$239

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Fri 5/8

7:28 pm-11:59 pm

1 stop5h 31m

Ontario

Wed 5/13

4:03 pm-11:58 pm

1 stop6h 55m

$239

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Tue 4/21

6:10 pm-11:44 pm

1 stop6h 34m

Ontario

Fri 4/24

6:00 am-11:23 am

1 stop4h 23m

$256

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Thu 4/30

5:05 am-1:39 pm

2 stops9h 34m

Ontario

Mon 5/4

5:05 pm-11:27 pm

1 stop5h 22m

$259

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Thu 6/11

5:25 am-9:01 am

1 stop4h 36m

Ontario

Tue 6/16

5:05 pm-11:02 pm

1 stop4h 57m

$277

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Wed 6/10

5:25 am-9:01 am

1 stop4h 36m

Ontario

Fri 6/12

5:05 pm-11:02 pm

1 stop4h 57m

$281

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Mon 4/20

8:26 pm-9:39 am

1 stop14h 13m

$111

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Sun 2/1

9:06 pm-12:10 pm

1 stop16h 04m

$138

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Wed 3/11

5:56 pm-11:51 pm

1 stop6h 55m

$148

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 18 results
1
2

Compare providers for flights from Kalispell to Ontario

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Kalispell to Ontario in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Kalispell-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Kalispell-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Kalispell-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Kalispell-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Kalispell-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Kalispell to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Kalispell with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Kalispell to Ontario?

Currently, March is the cheapest month in which you can book a flight from Kalispell to Ontario (average of $45). Flying from Kalispell to Ontario in September is currently the most expensive (average of $246). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated January 27, 2026.
See what other customers who have flown with Delta from Kalispell to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,118 reviews

Overall

7.9

Food

7.2

Crew

8.5

Entertainment

7.8

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
7.9
Good
8,118 reviews
Delta
7.9
Good
8,118 reviews

Overall

7.9

Food

7.2

Crew

8.5

Entertainment

7.8

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Kalispell to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Kalispell to Ontario?

    A quick flight from Kalispell to Ontario can take about 4h 36m. Alaska Airlines provides one of the quickest options available for as low as $239. Kalispell and Ontario are separated by a distance of 999 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What is the cheapest airline to fly from Kalispell to Ontario round-trip?

    Flying on Delta is currently your cheapest option to Ontario, with prices starting at $108. Users have found that Delta is 67% cheaper than the other options available to this destination.

  • Can I find deals for flights from Kalispell to Ontario that include hotel bookings?

    Yes. In addition to deals on Kalispell to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Kalispell to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Kalispell to Ontario.

  • Can I find deals for business class flights from Kalispell to Ontario?

    Yes. Cheapflights offers flight deals from Kalispell to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Kalispell to Ontario?

    Currently, March is the cheapest month in which you can book a flight from Kalispell to Ontario (average of $45). Flying from Kalispell to Ontario in September is currently the most expensive (average of $246). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Kalispell to Ontario

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Top airline flying from Kalispell to Ontario

Discover the top airline that operate flights from Kalispell to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$108Average$288FlexibilityNo cancel feeOn-timeN/A

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