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$119+ 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 11/15. Fares are subject to change and may not be available on all flights or dates of travel.
FCA — ONT
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Find 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 October 29, 2025.

This Alaska Airlines deal was found by Cheapflights users on 10/27. 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.
Fri 11/141:06 pmFCA - ONT
1 stop5h 03mAlaska Airlines
Wed 11/196:00 amONT - FCA
1 stop5h 24mAlaska Airlines
Deal found 10/27$223
This Delta deal was found by Cheapflights users on 10/27. 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.
Fri 11/1412:06 pmFCA - ONT
2 stops11h 49mDelta
Wed 11/194:49 pmONT - FCA
1 stop5h 11mDelta
Deal found 10/27$233
This Delta deal was found by Cheapflights users on 10/28. 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.
Sun 11/236:06 pmFCA - ONT
1 stop6h 46mDelta
Fri 12/56:00 amONT - FCA
1 stop4h 31mDelta
Deal found 10/28$258
This Delta deal was found by Cheapflights users on 10/28. 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.
Sat 11/226:06 pmFCA - ONT
1 stop4h 43mDelta
Thu 11/276:00 amONT - FCA
1 stop4h 26mDelta
Deal found 10/28$269
This Alaska Airlines deal was found by Cheapflights users on 10/28. 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.
Mon 11/248:00 pmFCA - ONT
1 stop6h 01mAlaska Airlines
Wed 12/37:10 amONT - FCA
1 stop5h 10mAlaska Airlines
Deal found 10/28$283
This Delta deal was found by Cheapflights users on 10/28. 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.
Sat 11/226:06 pmFCA - ONT
1 stop4h 43mDelta
Fri 11/286:00 amONT - FCA
1 stop4h 26mDelta
Deal found 10/28$299
This Delta deal was found by Cheapflights users on 10/28. 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 11/2712:06 pmFCA - ONT
1 stop6h 58mDelta
Thu 12/46:00 amONT - FCA
1 stop4h 31mDelta
Deal found 10/28$318
This Alaska Airlines deal was found by Cheapflights users on 10/28. 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.
Mon 12/82:00 pmFCA - ONT
1 stop5h 33mAlaska Airlines
Mon 12/157:33 pmONT - FCA
1 stop15h 47mAlaska Airlines
Deal found 10/28$320
This Alaska Airlines deal was found by Cheapflights users on 10/29. 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.
Tue 11/116:33 amFCA - ONT
1 stop5h 32mAlaska Airlines
Mon 11/177:20 amONT - FCA
1 stop5h 07mAlaska Airlines
Deal found 10/29$328
This Delta deal was found by Cheapflights users on 10/28. 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.
Sun 11/236:06 pmFCA - ONT
1 stop6h 46mDelta
Tue 11/256:00 amONT - FCA
1 stop4h 26mDelta
Deal found 10/28$329
This Delta deal was found by Cheapflights users on 10/28. 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 11/246:06 pmFCA - ONT
1 stop6h 46mDelta
Thu 11/276:00 amONT - FCA
1 stop4h 26mDelta
Deal found 10/28$359

Cheap 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 October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$206
(Cheapflightsfares)

One-way from

$119
(Alaska Airlines)

Popular in

November

Cheapest in

May

Average price

$287
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. 13% potential increase in price ($52 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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 October 29, 2025.
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

Tue 2/3

12:54 pm-5:05 pm

1 stop5h 11m

Ontario

Fri 2/6

6:00 am-12:14 pm

1 stop5h 14m

$206

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Sat 4/18

6:12 pm-11:44 pm

1 stop6h 32m

Ontario

Mon 4/20

5:05 pm-11:02 pm

1 stop4h 57m

$217

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Mon 2/2

7:46 pm-11:56 pm

1 stop5h 10m

Ontario

Fri 2/6

6:00 am-12:14 pm

1 stop5h 14m

$221

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Fri 11/14

1:06 pm-5:09 pm

1 stop5h 03m

Ontario

Wed 11/19

6:00 am-12:24 pm

1 stop5h 24m

$223

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Fri 11/14

12:06 pm-10:55 pm

2 stops11h 49m

Ontario

Wed 11/19

4:49 pm-11:00 pm

1 stop5h 11m

$233

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Sun 11/23

6:06 pm-11:52 pm

1 stop6h 46m

Ontario

Fri 12/5

6:00 am-11:31 am

1 stop4h 31m

$258

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Sun 11/23

6:06 pm-11:52 pm

1 stop6h 46m

Ontario

Thu 12/4

4:49 pm-11:10 pm

1 stop5h 21m

$258

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Sat 11/22

6:06 pm-9:49 pm

1 stop4h 43m

Ontario

Thu 11/27

6:00 am-11:26 am

1 stop4h 26m

$269

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Mon 11/24

8:00 pm-1:01 am

1 stop6h 01m

Ontario

Wed 12/3

7:10 am-1:20 pm

1 stop5h 10m

$283

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Wed 11/12

6:33 am-11:05 am

1 stop5h 32m

Ontario

Tue 11/18

7:20 am-1:27 pm

1 stop5h 07m

$283

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Showing 1-10 of 19 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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Kalispell-Ontario flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 $248). 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.

What is the cheapest time of day to fly from FCA to ONT?

Find hourly flight availability from Kalispell to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 29, 2025.

One of the essential ways to save on airfare from Kalispell to Ontario is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 63% on airfare.

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 October 29, 2025.
See what other customers who have flown with Alaska Airlines and 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.
Alaska Airlines
8.0
Very good
11,206 reviews

Entertainment

7.0

Comfort

7.8

Boarding

8.1

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
11,206 reviews
Alaska Airlines
8.0
Very good
11,206 reviews

Entertainment

7.0

Comfort

7.8

Boarding

8.1

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
7.9
Good
7,994 reviews
Alaska Airlines
8.0
Very good
11,206 reviews

Entertainment

7.0

Comfort

7.8

Boarding

8.1

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

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 5h 11m. Alaska Airlines provides one of the quickest options available for as low as $206. 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 are the cheapest airlines flying from Kalispell to Ontario round-trip?

    Flying on Alaska Airlines is currently your cheapest option to Ontario, with prices starting at $253. Another option worth looking into is Delta, starting at $254 round trip. Users have found that Alaska Airlines is 27% 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 $248). 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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Top 2 airlines flying from Kalispell to Ontario

Discover the top 2 airlines 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 October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$253Average$372FlexibilityNo cancel feeOn-time75%
DeltaCheapest$254Average$288FlexibilityNo cancel feeOn-timeN/A

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