HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$120+ 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 10/28. Fares are subject to change and may not be available on all flights or dates of travel.
FCA — ONT
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Kalispell to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 July 29, 2025.

Round-trip from

$240
(Alaska Airlines)

One-way from

$120
(Hawaiian Airlines)

Popular in

November

Cheapest in

May

Average price

$288
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. 14% potential increase in price ($60 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

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 July 29, 2025.

This Alaska Airlines deal was found by Cheapflights users on 7/28. 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.
Thu 10/166:35 pmFCA - ONT
1 stop6h 28mAlaska Airlines
Wed 11/54:11 pmONT - FCA
1 stop6h 46mAlaska Airlines
Deal found 7/28$240
This Delta deal was found by Cheapflights users on 7/28. 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 9/295:20 amFCA - ONT
1 stop4h 37mDelta
Tue 10/214:35 pmONT - FCA
1 stop5h 34mDelta
Deal found 7/28$241

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 July 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

Thu 10/16

6:35 pm-12:03 am

1 stop6h 28m

Ontario

Tue 11/4

6:00 am-12:24 pm

1 stop5h 24m

$240

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Mon 9/29

5:20 am-8:57 am

1 stop4h 37m

Ontario

Wed 10/8

4:35 pm-11:09 pm

1 stop5h 34m

$241

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Sat 1/17

6:31 am-12:33 pm

1 stop7h 02m

Ontario

Sun 1/25

5:40 am-1:28 pm

1 stop6h 48m

$335

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Tue 10/28

2:07 pm-8:53 pm

1 stop7h 46m

$120

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Wed 10/1

8:02 pm-10:44 am

1 stop15h 42m

$126

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Wed 8/13

5:20 am-8:55 am

1 stop4h 35m

$144

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Thu 8/14

6:20 am-12:32 pm

1 stop7h 12m

$205

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Sun 8/10

10:40 am-8:52 pm

1 stop11h 12m

$333

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Thu 8/14

4:57 pm-4:24 pm

2 stops24h 27m

$370

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

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, August is the cheapest month in which you can book a flight from Kalispell to Ontario (average of $246). Flying from Kalispell to Ontario in March is currently the most expensive (average of $328). 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 July 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 afternoon could potentially save you up to 23% 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 July 29, 2025.
See what other customers who have flown with Alaska Airlines, Delta, and Hawaiian Airlines 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
10,000 reviews

Food

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,977 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,605 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,899 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

  • 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 $240. Additional round-trip tickets that might be worth considering are offered by Delta and United Airlines, with the lowest prices starting at $241 and $335, respectively. Users have found that Alaska Airlines is 32% 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 Hawaiian Airlines ($120), Alaska Airlines ($126), and Delta ($144).

  • 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, August is the cheapest month in which you can book a flight from Kalispell to Ontario (average of $246). Flying from Kalispell to Ontario in March is currently the most expensive (average of $328). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Kalispell to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Missoula to San Francisco flights
Bozeman to San Francisco flights
Kalispell to San Francisco flights
Bozeman to Los Angeles flights
Kalispell to Los Angeles flights
Bozeman to Las Vegas flights
Bozeman to San Diego flights
Billings to Las Vegas flights
Missoula to Los Angeles flights
Kalispell to Santa Ana flights
Billings to Los Angeles flights
Bozeman to Ontario flights
Missoula to San Diego flights
Bozeman to Santa Ana flights
Kalispell to Oakland flights
Missoula to Las Vegas flights
Kalispell to Las Vegas flights
Missoula to Ontario flights
Bozeman to Long Beach flights
Kalispell to San Diego flights
Kalispell to Burbank flights
Missoula to Oakland flights
Kalispell to Long Beach flights
Bozeman to San Jose flights
Missoula to Santa Ana flights
Billings to Ontario flights
Billings to San Francisco flights
Billings to Sacramento flights
Bozeman to Oakland flights
Helena to Burbank flights
Helena to Las Vegas flights
Bozeman to Medford flights
Kalispell to Sacramento flights
Great Falls to Las Vegas flights
Bozeman to Sacramento flights
Great Falls to Sacramento flights
Billings to Reno flights
Missoula to Sacramento flights
Billings to San Diego flights
Billings to Santa Ana flights
Bozeman to Burbank flights
Helena to San Diego flights
Missoula to Reno flights
Missoula to San Jose flights
Bozeman to Monterey flights
Great Falls to Los Angeles flights
Butte to Las Vegas flights
Bozeman to Reno flights
Bozeman to Santa Rosa flights

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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$253Average$479FlexibilityNo cancel feeOn-time75%
DeltaCheapest$254Average$329FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.