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$106+ 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 12/25. Fares are subject to change and may not be available on all flights or dates of travel.
FCA — ONT
Dec 10 — Dec 171
Wed 12/10
Wed 12/17
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 November 10, 2025.

This Trip.com deal was found by Cheapflights users on 11/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/136:30 amFCA - ONT
1 stop5h 49mHawaiian Airlines
Tue 12/166:00 amONT - FCA
1 stop5h 20mHawaiian Airlines
Deal found 11/10$251
This Kiwi.com deal was found by Cheapflights users on 11/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/197:38 pmFCA - ONT
2 stops21h 53mMultiple Airlines
Tue 12/236:00 amONT - FCA
1 stop10h 05mMultiple Airlines
Deal found 11/9$284
This Delta deal was found by Cheapflights users on 11/9. 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 12/126:06 pmFCA - ONT
1 stop6h 52mDelta
Fri 12/196:00 amONT - FCA
1 stop4h 31mDelta
Deal found 11/9$308
This Alaska Airlines deal was found by Cheapflights users on 11/10. 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.
Wed 12/106:30 amFCA - ONT
1 stop13h 03mAlaska Airlines
Wed 12/176:00 amONT - FCA
1 stop5h 20mAlaska Airlines
Deal found 11/10$320
This Alaska Airlines deal was found by Cheapflights users on 11/8. 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 12/51:00 pmFCA - ONT
2 stops11h 29mAlaska Airlines
Mon 12/86:00 amONT - FCA
1 stop16h 58mAlaska Airlines
Deal found 11/8$349
This KAYAK deal was found by Cheapflights users on 11/10. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/136:30 amFCA - ONT
1 stop5h 49mHawaiian Airlines
Thu 12/186:00 amONT - FCA
1 stop5h 18mHawaiian Airlines
Deal found 11/10$379
This Trip.com deal was found by Cheapflights users on 11/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/116:33 amFCA - ONT
1 stop5h 32mMultiple Airlines
Tue 11/187:20 amONT - FCA
1 stop5h 07mMultiple Airlines
Deal found 11/10$386
This Alaska Airlines deal was found by Cheapflights users on 11/9. 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.
Wed 11/121:06 pmFCA - ONT
1 stop5h 03mAlaska Airlines
Tue 11/186:00 amONT - FCA
1 stop5h 24mAlaska Airlines
Deal found 11/9$393
This Delta deal was found by Cheapflights users on 11/9. 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 11/136:06 pmFCA - ONT
1 stop6h 46mDelta
Mon 11/176:00 amONT - FCA
1 stop4h 26mDelta
Deal found 11/9$394

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 November 10, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$251
(Trip.com)

One-way from

$106
(United Airlines)

Popular in

March

Cheapest in

May

Average price

$429
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. 8% potential increase in price ($32 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 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 November 10, 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

Thu 4/2

6:12 pm-11:52 pm

1 stop6h 40m

Ontario

Mon 4/6

5:05 pm-11:07 pm

1 stop5h 02m

$268

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Fri 12/19

7:38 pm-4:31 pm

2 stops21h 53m

Ontario

Tue 12/23

6:00 am-5:05 pm

1 stop10h 05m

$284

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Fri 12/12

6:06 pm-11:58 pm

1 stop6h 52m

Ontario

Fri 12/19

6:00 am-11:31 am

1 stop4h 31m

$308

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Thu 4/2

6:42 pm-10:38 pm

1 stop4h 56m

Ontario

Sun 4/5

6:00 am-12:04 pm

1 stop5h 04m

$338

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Fri 12/5

2:00 pm-11:19 am

1 stop22h 19m

Ontario

Mon 12/8

6:00 am-11:58 pm

1 stop16h 58m

$356

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Sun 11/23

8:00 pm-11:59 pm

1 stop4h 59m

Ontario

Thu 11/27

6:00 am-7:20 pm

1 stop12h 20m

$368

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Thu 4/2

6:40 am-8:13 pm

2 stops14h 33m

Ontario

Mon 4/6

6:00 am-12:04 pm

1 stop5h 04m

$407

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Sat 11/15

6:06 pm-9:49 pm

1 stop4h 43m

$170

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Sun 11/23

2:38 pm-8:44 pm

1 stop7h 06m

$205

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Tue 12/2

2:00 pm-6:33 pm

1 stop5h 33m

$209

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/8

Showing 1-10 of 14 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 November.
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 November 10, 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 November 10, 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
11,259 reviews

Crew

8.5

Entertainment

7.0

Food

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

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
11,259 reviews
Alaska Airlines
8.0
Very good
11,259 reviews

Crew

8.5

Entertainment

7.0

Food

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

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
8,004 reviews
Alaska Airlines
8.0
Very good
11,259 reviews

Crew

8.5

Entertainment

7.0

Food

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

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 6h 40m. Delta provides one of the quickest options available for as low as $268. Kalispell and Ontario are separated by a distance of 999 mi.

  • 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 24% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Kalispell to Ontario one-way?

    The cheapest airlines for a one-way flight from Kalispell to Ontario are Delta ($170), United Airlines ($205), and Alaska Airlines ($209).

  • 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 November 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$253Average$372FlexibilityNo cancel feeOn-time75%
DeltaCheapest$254Average$288FlexibilityNo cancel feeOn-timeN/A

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