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242 € Cheap Flights from Ontario International to Kalispell

Compare Ontario International to Kalispell flight deals

Find the cheapest month or even day of the year to fly to Kalispell

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Flight deals from Ontario International to Kalispell

Looking for a cheap last-minute deal or the best return flight from Ontario International Airport to Kalispell Airport? If you want to travel next month, return fares start from 242 €. Find the lowest prices on one-way and return tickets right here.
Kalispell.242 € per passenger.Departing Fri, 16 Oct, returning Mon, 19 Oct.Return flight with Delta.Outbound indirect flight with Delta, departs from Ontario International on Fri, 16 Oct, arriving in Kalispell.Inbound indirect flight with Delta, departs from Kalispell on Mon, 19 Oct, arriving in Ontario International.Price includes taxes and charges.From 242 €, select.
Kalispell.242 € per passenger.Departing Fri, 4 Dec, returning Sun, 6 Dec.Return flight with Delta.Outbound indirect flight with Delta, departs from Ontario International on Fri, 4 Dec, arriving in Kalispell.Inbound indirect flight with Delta, departs from Kalispell on Sun, 6 Dec, arriving in Ontario International.Price includes taxes and charges.From 242 €, select.
Kalispell.242 € per passenger.Departing Wed, 25 Nov, returning Wed, 2 Dec.Return flight with Delta.Outbound indirect flight with Delta, departs from Ontario International on Wed, 25 Nov, arriving in Kalispell.Inbound indirect flight with Delta, departs from Kalispell on Wed, 2 Dec, arriving in Ontario International.Price includes taxes and charges.From 242 €, select.
Kalispell.242 € per passenger.Departing Mon, 17 Aug, returning Wed, 26 Aug.Return flight with Delta.Outbound indirect flight with Delta, departs from Ontario International on Mon, 17 Aug, arriving in Kalispell.Inbound indirect flight with Delta, departs from Kalispell on Wed, 26 Aug, arriving in Ontario International.Price includes taxes and charges.From 242 €, select.
Kalispell.242 € per passenger.Departing Sun, 6 Sep, returning Thu, 10 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from Ontario International on Sun, 6 Sep, arriving in Kalispell.Inbound indirect flight with Delta, departs from Kalispell on Thu, 10 Sep, arriving in Ontario International.Price includes taxes and charges.From 242 €, select.
Kalispell.243 € per passenger.Departing Wed, 4 Nov, returning Sun, 8 Nov.Return flight with Delta.Outbound indirect flight with Delta, departs from Ontario International on Wed, 4 Nov, arriving in Kalispell.Inbound indirect flight with Delta, departs from Kalispell on Sun, 8 Nov, arriving in Ontario International.Price includes taxes and charges.From 243 €, select.
Kalispell.385 € per passenger.Departing Thu, 30 Jul, returning Fri, 7 Aug.Return flight with Frontier Airlines and Allegiant Air.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Thu, 30 Jul, arriving in Kalispell.Inbound indirect flight with Allegiant Air, departs from Kalispell on Fri, 7 Aug, arriving in Ontario International.Price includes taxes and charges.From 385 €, select.
Kalispell.644 € per passenger.Departing Thu, 23 Jul, returning Mon, 27 Jul.Return flight with Frontier Airlines and Allegiant Air.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Thu, 23 Jul, arriving in Kalispell.Inbound indirect flight with Allegiant Air, departs from Kalispell on Mon, 27 Jul, arriving in Ontario International.Price includes taxes and charges.From 644 €, select.

Find the cheapest month to fly from Ontario International to Kalispell

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Ontario International to Kalispell flights are currently cheapest in August.
Jul
from 644 €
Aug
from 242 €
Sep
from 242 €
Oct
from 242 €
Nov
from 243 €
Dec
from 242 €
Jan
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Feb
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Mar
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Apr
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May
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Jun
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Ontario International to Kalispell: Alternative routes

Compare routes from Ontario International to Kalispell below. You may find an airport to fly into that's cheaper, faster, or easier than Kalispell.

Kalispell

13km from central Kalispell
ClosestCheapest
from 242 €
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Ontario to Kalispell: Flight information

The things to know before you go.
Cheapest flight found242 €
Cheapest month to flySeptember

Finding cheap flights from Ontario International to Kalispell: Frequently asked questions

The best price we found for a return flight from Ontario International to Kalispell is 242 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Ontario International to Kalispell. But we found flights with one or more stops from 242 €.
As of July 2026, there are no flights flying from Ontario International to Kalispell.
The cheapest month to fly from Ontario International to Kalispell is usually September.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Ontario International Airport to Kalispell Airport on Sunday, 6 September 2026.
No airlines currently offer direct flights between Ontario International Airport and Kalispell Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Kalispell but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Kalispell is around 40 days in advance, so don’t leave your flight to the last minute.

Currently, Delta offers the cheapest flight tickets to Kalispell.

Flying from Ontario International Airport (ONT) to Kalispell Airport (FCA): what you need to know

  • Give yourself enough time to catch your ONT to FCA flight. Generally, it's best to arrive at least two hours before international departures and an hour ahead for domestic flights.

  • Be prepared for longer queues in popular months such as July. Arriving up to four hours ahead of international flights and two hours for domestic departures is a good idea.

  • Think about adding a stopover when booking your ticket from Ontario International Airport to Kalispell Airport. Simply deselect 'Direct flights only' to break up your journey, or maybe even explore a new city along the way. Here's where you can stop between ONT and FCA:

    • San Francisco International Airport

    • Salt Lake City Airport

    • Oakland Metropolitan Oak Airport

How to find the cheapest flights from Ontario International Airport (ONT) to Kalispell Airport (FCA)

  • At the moment, 144 € is the cheapest price we've found for a one-way Ontario International Airport to Kalispell Airport flight. The best price for a return plane ticket is 242 €. Keep in mind that fares can change due to availability at the time of booking.

  • Don't leave everything to the last moment. You're more likely to find cheap tickets from ONT to FCA if you book early. Airlines often have some excellent early bird rates.

  • Getting cheap flights from Ontario International Airport to Kalispell Airport is more likely if you can be flexible with your travel plans. Use the 'Whole month' search tool to see the lowest fares across every month and land a great deal.

  • Landing cheap flights from ONT to FCA is a piece of cake with Price Alerts. Simply create one of these automatic alerts and we'll notify you as soon as fares go down.

  • Secure the perfect flight for you with the help of the filters. To see the 'Cheapest,' 'Fastest' or 'Best' flights from Ontario International Airport to Kalispell Airport, use the 'Sort by' tool. You can also filter by departure and arrival times, airline, and journey duration.

Handy information about Ontario International Airport (ONT)

  • You'll find ONT at 2900 E. Airport Drive.

  • Ontario International Airport maintains a solid on-time performance, reducing the likelihood of delays. Departures from ONT land at their destination as scheduled 83% of the time.

  • To reach Ontario International Airport from central Ontario, it'll take around 15 minutes if you're going by car. This depends on traffic, however. It's approximately 10 kilometres from the airport to the city centre.

  • Planning to catch public transport? Expect a trip time of around 45 minutes.

  • Get your trip off to a hassle-free start by staying near ONT. Whether you're catching an early flight from Ontario International Airport to Kalispell Airport or want to avoid feeling rushed, these hotels are the answer:

Arriving at Kalispell Airport (FCA)

When to fly to Kalispell Airport (FCA)

  • The quietest month for a flight from Ontario International Airport to Kalispell Airport is March, while August is the busiest. Pick the ideal time to visit Kalispell based on whether you prefer a more relaxed vibe or a faster pace.

  • Lock in your flight from Ontario International Airport to Kalispell Airport for July if you want to explore Kalispell during its warmest month. Expect temperatures of between 7ºC (45ºF) and 32ºC (90ºF).

  • Search for cheap tickets from ONT to FCA in February if you like travelling in cooler conditions. Temperatures are at their lowest around then, ranging between -17ºC (1ºF) and 1ºC (34ºF) on average.

Explore more of the United States

  • Kalispell has plenty going for it, but there are so many other corners of the United States you should also see. Around 241 kilometres west of Kalispell, a trip to Spokane will keep your itinerary busy. Check out popular attractions like Riverside State Park, Spokane Falls (Upper Falls) and Cathedral of Our Lady of Lourdes.

  • If there's time to check out another great destination in the United States, head for Spokane Valley, about 225 kilometres west of Kalispell. Appleway Trail, Splash Down Waterpark and Honour Point Military and Aerospace Museum are highlights.

Plan the rest of your trip from Ontario to Kalispell

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.