Cheap Flights from Kalispell to Ontario International

Compare Kalispell to Ontario International flight deals

Find the cheapest month or even day of the year to fly to Ontario International

Book the best Ontario International fare with no extra fees

Flight deals from Kalispell Airport to Ontario International Airport

Looking for a cheap last-minute deal or the best return flight from Kalispell to Ontario International? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Kalispell to Ontario International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Kalispell to Ontario International flights are currently cheapest in September.

Kalispell to Ontario: Flight information

The things to know before you go.
Cheapest flight foundR 3,064
Cheapest month to flySeptember

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

The best price we found for a return flight from Kalispell to Ontario International is R 4,715. 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 Kalispell to Ontario International. But we found flights with one or more stops from R 4,715.
As of March 2026, there are no flights flying from Kalispell to Ontario International.
The cheapest month to fly from Kalispell to Ontario International is usually January.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Kalispell Airport to Ontario International Airport on Saturday, 9 January 2027.
No airlines currently offer direct flights between Kalispell Airport and Ontario International 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 Ontario International 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 Ontario is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Delta offers the cheapest flight tickets to Ontario International.

Travelling from Glacier Park International Airport (FCA) to Ontario International Airport (ONT): what you need to know

  • Ontario's timezone is UTC-7, making Ontario one hour behind Kalispell.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are golden rules for stress-free travel. Be at the airport with enough time to board your FCA to ONT flight.

  • You'll likely experience longer queues during popular months like July. Arriving up to four hours in advance for international flights and two hours for a domestic departure is a smart move.

  • Consider adding a stopover when booking your ticket from Glacier Park International Airport to Ontario International Airport. Simply deselect 'Direct flights only' to break up your trip, or visit a new city along the way. Check out these options between FCA and ONT:

    • Salt Lake City International Airport

    • Denver International Airport

    • Metropolitan Oakland International Airport

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

  • Currently, R 3,064 is the lowest price we've found for a one-way Glacier Park International Airport to Ontario International Airport flight. The best price for a return plane ticket is R 4,715. Keep in mind that fares could change due to demand at the time of booking.

  • To score cheap tickets from FCA to ONT, book ahead. Airlines tend to offer lower fares when flights are first made available.

  • The 'Whole month' tool shows you the cheapest flights from Glacier Park International Airport to Ontario International Airport across the month. It's a good way to snap up a bargain if your plans aren't set in stone.

  • You won't have to check every day to see if fares have gone down when you set up a Price Alert. We'll let you know the moment there's a better deal on cheap flights from FCA to ONT.

  • Discover the perfect flight for you with the help of the filters. To see the 'Fastest,' 'Cheapest' or 'Best' flights from Glacier Park International Airport to Ontario International Airport, use the 'Sort by' tool. You can also filter results by airline, departure and arrival times, and number of stops.

Handy information about Glacier Park International Airport (FCA)

  • The address for FCA is 4170 Highway 2 East.

  • When it comes to Glacier Park International Airport's on-time performance, data shows 78.06% of flights stick to their scheduled arrival time.

  • Glacier Park International Airport is about 16 kilometres from central Kalispell. If you're driving, catching a cab or ride-sharing from the centre, it'll take 20 minutes or so to arrive, depending on the traffic.

  • Need a handy hotel near FCA? If you're boarding an early flight from Glacier Park International Airport to Ontario International Airport, these accommodation options will have you moments from your departure gate:

Arriving at Ontario International Airport (ONT)

Getting from Ontario International Airport (ONT) to central Ontario

  • The address for ONT is 2900 E. Airport Drive.

  • From Ontario International Airport, Ontario is approximately 6 kilometres away. It takes around 10 minutes to reach the centre by car.

  • If you're using public transport, expect a journey time of around 1 hour 30 minutes.

When to fly to Ontario International Airport (ONT)

  • August is the busiest month for flights from Glacier Park International Airport to Ontario International Airport. For smaller crowds, head to Ontario in May.

  • The warmest month in Ontario is August, with temperatures ranging between 15ºC (59ºF) and 35ºC (95ºF). Lock in your flights from Glacier Park International Airport to Ontario International Airport in this month if you like this kind of weather.

  • Search for cheap tickets from FCA to ONT in January if you want to travel in cooler conditions. Temperatures are at their lowest around then, ranging between 4ºC (39ºF) and 23ºC (73ºF) on average.

Explore more of United States

  • Los Angeles is just one of the many places in United States waiting to be discovered once you've taken in the sights of Ontario. Around 56 kilometres away to the west, its top attractions include Griffith Observatory, The Broad and La Brea Tar Pits & Museum.

  • If you're ready to explore another great destination in United States, head for San Diego, about 153 kilometres south of Ontario. San Diego Zoo, USS Midway Museum and SeaWorld San Diego are highlights.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.