GTF - ONT

$274 Find Cheap Flights from Great Falls to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Great Falls to Ontario departing on 5/20. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult

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

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

Cheap Flight Deals from Great Falls to Ontario (GTF-ONT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Great Falls to Ontario 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 Great Falls to Ontario

Mon, Jun 2 - Mon, Jun 9
Delta Logo
6:19 pm - 11:42 pmGTF-ONT
6h 23m1 stop
Delta Logo
6:00 am - 11:02 amONT-GTF
4h 02m1 stop
$321Delta
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Mon, Sep 22 - Fri, Sep 26
United Airlines Logo
2:35 pm - 8:33 pmGTF-ONT
6h 58m1 stop
United Airlines Logo
1:15 pm - 9:28 pmONT-GTF
7h 13m1 stop
$360United Airlines
Find Deal
Mon, Sep 22 - Mon, Sep 22
Delta Logo
5:30 am - 9:06 amGTF-ONT
4h 36m1 stop
Delta Logo
5:05 pm - 10:51 pmONT-GTF
4h 46m1 stop
$400Delta
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Mon, Sep 22 - Fri, Sep 26
Alaska Airlines Logo
4:29 pm - 9:26 amGTF-ONT
17h 57m2 stops
Alaska Airlines Logo
6:00 am - 3:49 pmONT-GTF
8h 49m1 stop
$432Alaska Airlines
Find Deal
Thu, May 22 - Tue, May 27
United Airlines Logo
2:26 pm - 9:04 pmGTF-ONT
7h 38m1 stop
United Airlines Logo
5:10 am - 1:27 pmONT-GTF
7h 17m1 stop
$436United Airlines
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Mon, Jun 2 - Mon, Jun 9
United Airlines Logo
2:26 pm - 9:04 pmGTF-ONT
7h 38m1 stop
United Airlines Logo
6:41 pm - 1:27 pmONT-GTF
17h 46m2 stops
$481United Airlines
Find Deal
Mon, Sep 22 - Fri, Sep 26
Alaska Airlines Logo
4:29 pm - 5:00 pmGTF-ONT
25h 31m2 stops
Alaska Airlines Logo
7:10 am - 3:49 pmONT-GTF
31h 39m2 stops
$520Alaska Airlines
Find Deal
Thu, May 22 - Tue, May 27
United Airlines Logo
2:26 pm - 12:14 pmGTF-ONT
22h 48m2 stops
United Airlines Logo
5:10 am - 1:27 pmONT-GTF
7h 17m1 stop
$557United Airlines
Find Deal
Fri, May 16 - Mon, May 19
Alaska Airlines Logo
5:09 pm - 10:46 pmGTF-ONT
6h 37m1 stop
Alaska Airlines Logo
6:00 am - 4:29 pmONT-GTF
9h 29m1 stop
$620Alaska Airlines
Find Deal
Fri, May 16 - Mon, May 19
Delta Logo
11:45 am - 4:17 pmGTF-ONT
5h 32m1 stop
Delta Logo
6:00 am - 11:05 amONT-GTF
4h 05m1 stop
$626Delta
Find Deal
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KAYAK's insights & trends for Great Falls to Ontario flights

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

What’s the cheapest day of the week to fly from Great Falls to Ontario?

The average price of all round-trip flights from Great Falls to Ontario clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Ontario on a Saturday and more expensive on a Friday. On your return trip to Great Falls, you should consider flying back on a Saturday, and avoid Tuesdays for better deals.

Good to know

Cheapest flight$274
Flight from Great Falls to Ontario

When to book flights from Great Falls to Ontario

Are your dates flexible? Find out the best times to travel from Great Falls to Ontario 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 Great Falls to Ontario

  • What is the cheapest flight from Great Falls to Ontario?

    In the last 3 days, the lowest price for a flight from Great Falls to Ontario was $274 for a one-way ticket and $321 for a round-trip.

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

    A passport is not required to fly from Great Falls to Ontario.

  • Which airports will I be using when flying from Great Falls to Ontario?

    Great Falls and Ontario are both served by 1 main airport. You will leave Great Falls from Great Falls and will be arriving at Ontario.

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

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

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

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Great Falls and Ontario, with SkyTeam being the most commonly used for this route.

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

    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 Great Falls to Ontario.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Great Falls 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 Great Falls to Ontario?

    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 Ontario with an airline and back to Great Falls with another airline. Booking your flights between Great Falls and ONT 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 Great Falls to Ontario?

    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 Ontario from Great Falls up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top airline flying from Great Falls to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Great Falls to Ontario. 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 Great Falls to Ontario? 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.
8.0
DeltaOverall score based on 7942 reviews
7.9Comfort
8.5Crew
7.3Food
8.2Boarding
7.9Entertainment
Airline reviews

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

10.0 ExcellentGary, Apr 2025TPA - LAX
Read more Delta reviews

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Seats are much much more comfortable than United, which is what I usually fly

If I pay extra for "comfort+" I expect leg room where I can stretch my legs. I was seated with an attendant's seat blocking my feet. Knee space was fine but my feet had less room than the non-"comfort+" seats. Also, don't go cheap on food when you have flights of 3+ hours. It's insulting.

Only one side of the heafphone jack work. Crew was friendly and helpful.

Great. Flight departed early and arrived early. Deplaning and baggage claim ww were quick.

They separated our seats and moved us to the back of the plane. Hundreds of dollars and thousands of miles used and this was my platinum member experience.

Nothing unusual. It was fine. I hate having to pay extra for my seat.

AC barely worked on a 50 minute flight. It was very warm the whole flight. Flight was very bumpy and hard landing.

Got on the plane and then needed to deboard the plane because they didn’t have any pilots?

The flight was canceled two hours before departure, it took over five hours to rebook us on another flight.

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

Information on your arrival and departure airports

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