ONT - GTF

Find cheap flights from Ontario to Great Falls

1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Great Falls

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Great Falls, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Great Falls, as well as popular online travel agencies
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Everything you should know

Nonstop flights
Not available
There are currently no direct flights between Ontario and Great Falls. You'll need at least 1 connection.
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Top layover airports
Salt Lake City (SLC)
Cheapest • Avg $538 (round-trip)
Salt Lake City (SLC)
Shortest trip • 5h 03m (one-way)
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to Great Falls (ONT-GTF)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Great Falls that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Great Falls

Multiple Airlines Logo
ONT
-
GTF
982 mimulti-stop
Multiple Airlines Logo
GTF
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ONT
982 mimulti-stop
Multiple Airlines
Booking Insights

KAYAK's insights & trends for Ontario to Great Falls flights

Get data-powered insights and trends into flights from Ontario to Great Falls to help you find the cheapest flights, the best time to fly and much more.

What is the most popular layover airport when flying from Ontario to Great Falls?

Percentage of 1-stop round-trip flights from Ontario to Great Falls chosen by KAYAK users via each layover airport in the last 12 months (only includes trips with the same layover airport on both legs).

Salt Lake City (SLC) is the top choice – 73% of KAYAK users who clicked on 1-stop flights from Ontario to Great Falls picked an itinerary connecting there.

What is the cheapest layover airport when flying from Ontario to Great Falls?

Average round-trip price for 1-stop flights from Ontario to Great Falls clicked by KAYAK users in the last 12 months (only includes trips with the same layover airport on both legs).

Flights via Salt Lake City (SLC) offer the most affordable fares, with an average round-trip price of $538.

Which layover airport offers the shortest total travel time from Ontario to Great Falls?

Shortest average total travel time for 1-stop one-way flights from Ontario to Great Falls via different layover airports, based on KAYAK user data from the last 12 months.

Consider flying via Salt Lake City (SLC) for the shortest journey. The average one-way travel time for flights connecting there is 5h 03m.

Which layover airport has the quickest connection when flying from Ontario to Great Falls?

Average layover duration at different layover airports for 1-stop one-way flights from Ontario to Great Falls, based on KAYAK user data from the last 12 months.

If you prefer a quick connection, Salt Lake City (SLC) often has the shortest layovers from Ontario to Great Falls, with an average of 1h 53m.

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When to book flights from Ontario to Great Falls

Are your dates flexible? Find out the best times to travel from Ontario to Great Falls based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ontario to Great Falls

  • Do I need a passport to fly between Ontario and Great Falls?

    No, a passport isn't needed to fly from Ontario to Great Falls. However, local authorities might ask for an official ID.

  • Which aircraft models fly most regularly from Ontario to Great Falls?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Great Falls?

    SkyTeam is the only airline alliance operating flights between Ontario and Great Falls.

  • How does KAYAK find such low prices on flights from Ontario to Great Falls?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Great Falls.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Great Falls?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Great Falls from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Great Falls?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Great Falls with an airline and back to Ontario with another airline. Booking your flights between Ontario and GTF can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Great Falls?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Great Falls from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Ontario to Great Falls

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Great Falls. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Great Falls? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8438 reviews
8.1Boarding
7.8Entertainment
7.9Comfort
8.5Crew
7.2Food
Airline reviews

While they turned off most cabin lights to allow people to sleep, I was bothered by how bright the side lights still were. It was still quite bright for me in a window seat, when I wish I could have slept!

10.0 ExcellentTeresa, Apr 2026
SMF - LAX
Read more Delta reviews

While they turned off most cabin lights to allow people to sleep, I was bothered by how bright the side lights still were. It was still quite bright for me in a window seat, when I wish I could have slept!

Generally on time departures and arrivals, clean planes, sky miles membership provides great benefits (complimentary upgrades, etc).

N Everything was perfect from boarding to assistance to baggage in Tampa

Loved the crew! Sucks that we went from 1 hour and 8 minute layover to a 3 hour layover. But weather sucks like that.

Fast, lovely scenery, great info on the Delta flight screen about landmarks we were flying over. Great landing!

Long flight but comfortable and not freezing as I have experienced on Hawaiian flights to the islands. They gave us blankets just in case. Nice touch.

I took seat 15A in anticipation of window seat, there is no window.

Flight late, the waited for a long time for “personal” to arrive at gate to dock the plane in Rochester. So annoying. This flight was expected, why aren’t personel available for the jet bridge?

My recent experience was excellent on Delta! I flew with Delta Comfort and I was really comfortable in my seat. I enjoyed the in-flight service. The flight attendants were so friendly and hospitable. I love the snack on the flight as well. This was my first time flying on Delta and I will definitely consider flying with them again.

My flight was canceled on Sunday. Rebooking took three hours. Had to pay for accommodations another night. New flight was delayed for 5 hours, all that was sent was a 12 dollar food voucher, which doesn’t tell you how to use it. Then when we landed we had to sit on the plane for an hour before we could get off.

Everything you need to know for your flight from Ontario to Great Falls

Information on your arrival and departure airports

Ontario (ONT)
Great Falls (GTF)