ONT - GTF

$169 Find Cheap Flights from Ontario to Great Falls - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$318
Typical prices: $484-$718
Alaska Airlines
Tue 1/30Fri 2/2
ONT - GTF • 1 stop
Cheapest one-way
$169
Typical prices: $207-$288
Delta
Mon 10/8
ONT - GTF • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Ontario and Great Falls. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
July
Cheapest • 38% price drop
November
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Las Vegas Harry Reid Intl (LAS)
Cheapest • Avg $334 (round-trip)
Salt Lake City (SLC)
Shortest trip • 5h 23m (one-way)
Insights
Insights
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Flight Deals
Booking Insights
Flight Deals

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

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Great Falls

Sat, Jan 30 - Tue, Feb 2
Alaska Airlines Logo
7:00 am - 3:28 pmONT  Ontario-GTF Great Falls
7h 28m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
4:08 pm - 10:41 pmGTF  Great Falls-ONT Ontario
7h 33m1 stop Seattle/Tacoma Intl
$318Alaska Airlines
Wed, Jan 13 - Wed, Jan 27
Alaska Airlines Logo
7:00 am - 3:28 pmONT  Ontario-GTF Great Falls
7h 28m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
4:08 pm - 10:41 pmGTF  Great Falls-ONT Ontario
7h 33m1 stop Seattle/Tacoma Intl
$333Alaska Airlines
Fri, Oct 30 - Mon, Nov 2
Delta Logo
9:45 am - 5:47 pmONT  Ontario-GTF Great Falls
7h 02m1 stop Salt Lake City
Delta Logo
6:27 pm - 10:12 pmGTF  Great Falls-ONT Ontario
4h 45m1 stop Salt Lake City
$338Delta
Fri, Oct 2 - Sun, Oct 4
Delta Logo
6:00 am - 12:35 pmONT  Ontario-GTF Great Falls
5h 35m1 stop Salt Lake City
Delta Logo
5:40 am - 9:02 amGTF  Great Falls-ONT Ontario
4h 22m1 stop Salt Lake City
$338Delta
Thu, Oct 29 - Wed, Nov 4
Delta Logo
9:45 am - 5:47 pmONT  Ontario-GTF Great Falls
7h 02m1 stop Salt Lake City
Delta Logo
6:27 pm - 10:11 pmGTF  Great Falls-ONT Ontario
4h 44m1 stop Salt Lake City
$339Delta
Thu, Oct 29 - Wed, Nov 4
Delta Logo
6:00 am - 12:38 pmONT  Ontario-GTF Great Falls
5h 38m1 stop Salt Lake City
Delta Logo
1:18 pm - 10:43 pmGTF  Great Falls-ONT Ontario
10h 25m2 stops Salt Lake City Seattle/Tacoma Intl
$344Delta
Fri, Oct 30 - Mon, Nov 2
Delta Logo
6:20 am - 5:47 pmONT  Ontario-GTF Great Falls
10h 27m2 stops Seattle/Tacoma Intl Salt Lake City
Delta Logo
1:18 pm - 4:23 pmGTF  Great Falls-ONT Ontario
4h 05m1 stop Salt Lake City
$344Delta
Thu, Oct 29 - Wed, Nov 4
Delta Logo
6:20 am - 5:47 pmONT  Ontario-GTF Great Falls
10h 27m2 stops Seattle/Tacoma Intl Salt Lake City
Delta Logo
1:18 pm - 10:43 pmGTF  Great Falls-ONT Ontario
10h 25m2 stops Salt Lake City Seattle/Tacoma Intl
$349Delta
Fri, Oct 23 - Fri, Oct 30
Delta Logo
9:45 am - 5:47 pmONT  Ontario-GTF Great Falls
7h 02m1 stop Salt Lake City
Delta Logo
5:40 am - 8:55 amGTF  Great Falls-ONT Ontario
4h 15m1 stop Salt Lake City
$363Delta
Sun, Oct 4 - Tue, Oct 6
Delta Logo
6:00 am - 12:35 pmONT  Ontario-GTF Great Falls
5h 35m1 stop Salt Lake City
Delta Logo
1:18 pm - 4:23 pmGTF  Great Falls-ONT Ontario
4h 05m1 stop Salt Lake City
$363Delta
Booking Insights

Price, demand and travel trends for Ontario to Great Falls flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Ontario to Great Falls with more confidence.

How much is a round-trip flight from Ontario to Great Falls?

Round-trip flights from Ontario to Great Falls start at $318. Prices are below average for this route right now, with typical round-trip fares ranging from $484 to $718. The lowest price found in the past 5 days was $318 on Alaska Airlines.

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Key details for Ontario to Great Falls flights

Low season

March

Cheapest flight

$169
Flight from Ontario to Great Falls

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

Your Ontario to Great Falls flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from Ontario to Great Falls?

    Flights from Ontario to Great Falls usually depart from Ontario (ONT) and arrive at Great Falls (GTF).

  • What cabin classes can I book on flights from Ontario to Great Falls?

    Only Economy Class is available on flights from Ontario to Great Falls.

  • Which airports do connecting flights from Ontario to Great Falls pass through?

    One-stop flights from Ontario to Great Falls most commonly connect through:

    • Salt Lake City (SLC) - 65% of one-stop connections
    • Denver Intl (DEN) - 26% of one-stop connections
    • Las Vegas Harry Reid Intl (LAS) - 4% of one-stop connections
    • Seattle/Tacoma Intl (SEA) - 4% of one-stop connections

    Salt Lake City (SLC) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Ontario to Great Falls?

    Yes. Being flexible with your travel dates can save you up to 43% on the Ontario to Great Falls route. Thursday is the cheapest departure day at $478 round-trip on average, while Saturday is the most expensive at $828, a difference of $350. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How long is a flight from Ontario to Great Falls?

    A nonstop flight from Ontario to Great Falls takes 0h 00m, covering 982 miles.

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

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

  • Have flight prices from Ontario to Great Falls changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $318 to $1,335. That means the highest observed fare was about 4x higher than the lowest one.

  • How are flight prices from Ontario to Great Falls looking right now?

    One-way fares from Ontario to Great Falls are currently higher than usual. Average one-way flight prices are about $343, which is 32% above the typical average for this route.

  • How much time can I save by choosing a different layover airport from Ontario to Great Falls?

    Flying via Salt Lake City (SLC) gives the shortest average 1-stop total travel time at 5h 23m, compared with 7h 21m via Denver Intl (DEN) and 12h 35m via Seattle/Tacoma Intl (SEA).

  • What is the time difference between Ontario and Great Falls?

    Great Falls is 1 hour ahead of Ontario (Mountain Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Great Falls Airport (GTF)?

    Great Falls Airport (GTF) hosts 5 major car rental companies, with daily rates starting from around $23 for economy cars. Top options include:
    · Avis
    · Budget
    · Alamo
    · Hertz
    · Enterprise Rent-A-Car

  • How much should I expect to pay for a Ontario to Great Falls flight?

    Round-trip flights from Ontario to Great Falls range from $484 to $718, with an average of $570 over the past 12 months. Anything below $484 counts as a good deal.

Your guide to booking Ontario to Great Falls flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Thursday departure instead of Saturday. On this route, Thursday flights average $478 - about $350 less than Saturday (42% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Ontario to Great Falls trip for July. Fares historically average $354 round-trip in that month - typically $474 less than the most expensive month, which is August (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Great Falls Airport.
    - Crystal Inn Hotel & Suites - Great Falls
    - Hampton Inn Great Falls
    - Hilton Garden Inn Great Falls

More options for your flight from Ontario to Great Falls

Complete your trip to Great Falls with a hotel stay or car rental

Car rentals in Great Falls
Hotels in Great Falls
Vacations in Great Falls