$99 Find Cheap Flights from Ontario to Montana

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Montana 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
1 adult, Economy, 0 bags

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

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

Cheap Flights from Ontario to Montana

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Bozeman
Bozeman1 stop$200
Kalispell
Kalispell1 stop$276
Missoula
Missoula1 stop$221
Billings
Billings1 stop$301
Great Falls
Great Falls1 stop$320
Helena
Helena1 stop$331
Bozeman
Bozeman1 stop$200
Kalispell
Kalispell1 stop$276
Missoula
Missoula1 stop$221
Billings
Billings1 stop$301
Great Falls
Great Falls1 stop$320
Helena
Helena1 stop$331

Book Cheap Ontario to Montana Plane Tickets

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

Thu, Apr 23 - Tue, Apr 28
Southwest Logo
12:50 pm - 11:00 pm
ONT
-
BZN
9h 10m
1 stop
Southwest Logo
11:20 am - 3:10 pm
BZN
-
ONT
4h 50m
1 stop
$200Southwest
Tue, Jun 2 - Tue, Jun 9
Southwest Logo
4:30 pm - 12:15 am
ONT
-
BZN
6h 45m
1 stop
Southwest Logo
7:05 pm - 10:45 pm
BZN
-
ONT
4h 40m
1 stop
$209Southwest
Tue, Apr 14 - Sat, Apr 18
Delta Logo
6:00 am - 11:04 am
ONT
-
BZN
4h 04m
1 stop
Delta Logo
11:59 am - 4:25 pm
BZN
-
ONT
5h 26m
1 stop
$217Delta
Thu, May 7 - Mon, May 11
Multiple Airlines Logo
4:04 pm - 8:04 pm
ONT
-
MSO
27h 00m
1 stop
Multiple Airlines Logo
8:54 pm - 7:32 pm
MSO
-
ONT
23h 38m
1 stop
$221Multiple Airlines
Thu, May 7 - Mon, May 11
Multiple Airlines Logo
4:04 pm - 8:04 pm
ONT
-
MSO
27h 00m
1 stop
Multiple Airlines Logo
8:54 pm - 3:44 pm
MSO
-
ONT
19h 50m
1 stop
$225Multiple Airlines
Fri, Apr 17 - Mon, Apr 20
Delta Logo
5:05 pm - 12:09 am
ONT
-
BZN
6h 04m
1 stop
Delta Logo
6:34 pm - 11:44 pm
BZN
-
ONT
6h 10m
1 stop
$233Delta
Tue, May 26 - Sat, May 30
Alaska Airlines Logo
7:41 pm - 10:51 am
ONT
-
FCA
14h 10m
1 stop
Alaska Airlines Logo
5:40 pm - 11:10 am
FCA
-
ONT
18h 30m
1 stop
$298Alaska Airlines
Thu, Apr 30 - Thu, May 7
United Airlines Logo
5:00 am - 1:23 pm
ONT
-
BIL
7h 23m
1 stop
United Airlines Logo
5:05 am - 12:22 pm
BIL
-
ONT
8h 17m
2 stops
$330United Airlines
Thu, Apr 30 - Thu, May 7
United Airlines Logo
5:00 am - 1:23 pm
ONT
-
BIL
7h 23m
1 stop
United Airlines Logo
5:05 am - 12:22 pm
BIL
-
ONT
8h 17m
2 stops
$332United Airlines
Mon, Apr 27 - Mon, May 4
Alaska Airlines Logo
7:59 pm - 12:03 pm
ONT
-
FCA
15h 04m
1 stop
Alaska Airlines Logo
7:28 pm - 11:59 pm
FCA
-
ONT
5h 31m
1 stop
$343Alaska Airlines
Booking Insights

KAYAK's insights & trends for Ontario to Montana flights

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

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

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Ontario to Montana departing in April.

What is the cheapest month to fly from Ontario to Montana?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Montana, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ontario to Montana is February, when tickets cost $216 (return) on average. On the other hand, the most expensive months are January and March, when the average cost of round-trip tickets is $398 and $354 respectively.

Good to know

Low seasonJanuary
Cheapest flight$99
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly with an average 5% increase in price.
Flight from Ontario to Missoula

FAQs - booking Montana flights

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

    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 Montana.

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

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

    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 from Ontario to Montana with an airline and back with another airline.

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

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

Reviews of the top 4 airlines serving from Ontario to Montana

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Montana. 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 Montana? 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
SouthwestOverall score based on 4331 reviews
8.6Crew
8.0Comfort
7.5Entertainment
7.0Food
8.1Boarding
Airline reviews

Southwest was greaat! The most expensive but the least upsetting for those we were flying to see.

10.0 ExcellentMartie, Mar 2026
LGB - BNA
Read more Southwest reviews

Southwest was greaat! The most expensive but the least upsetting for those we were flying to see.

Boarding was easy. The seats are small and fairly uncomfortable

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

Good but I prefer choose your own seat. With the new assigned seats they should board from the back I see no advantage to this new boarding. Just like every other airline

Flight boarded late after announcing on time boarding. Flight arrived only a little late despite late departure. Had trouble connecting to WiFi

The Southwest experience has definitely taken a dive from its early days. You can no longer deferentiate from other airlines. Air travel is too expensive. Southwest is no longer budget friendly. They have lost me as a loyal customer.

The charges were ridiculous for an hour flight and the turbulence was very scary.

The seats are now more narrow. I paid for front row the seats in the front are even more narrow than before.

The wifi on the plane is great. The only issue that I have is that I prefer an aisle seat and on my trips this week, I was either in the middle or window. If we can work to secure aisle seating, I will be thrilled. Nice trip.

Great flight but super high price. Glad it was a business trip and not personal

No complimentary snacks or food. Had to buy drinks and food.

The ticketing counter in SD was a mess. The lady handling the First-Class check-in seemed overwhelmed until a supervisor replaced her. It took almost 20 minutes to get once couple checked in, and then she started walking around the counters while 7 people just stood in line. Once her supervisor arrived, she announced she was going on break, never to engage with customers again.

WOuld have liked coffee or pretzels but other than that, crew and pilot and flight were great. Seat was great, too.

No outlets, plugs, way to charge the phone or service and no food on one leg o the trip, but other than that, great. Loved WIFI, the flight, the crew, the pilots, the schedule, etc. Great job. My new favorite airline!

On time, friendly and professional staff and crew Very nice new terminal in Spokane

Alaska drastically changed our flight from a direct flight to a flight with connection and a long layover. So we canceled the Alaska flight and we learned a valuable lesson that we will never book through kayak again because the third party travel agent tried to withhold our money.

Everything was excellent. It always is with Alaska Airlines. Thank you. 😊

It was ok! Not fond of sitting in middle seat. Tried to upgrade with my Atmos card but it was a new account and they weren’t able to look up my account details.

Flights were on time, which made making connections do much better. Well organized

The flight 2161 was cancelled after repeated delays; for some reason the crew and not the tower located in Billings, Montana made the call. A cancelled flight is not a big deal, it happens. It was very disappointing that upon cancelling the flight it was a free for all to get to the counter for rebooking. Priority seating and first class ticket holders should have been giving priority to get on the next available flight. Most would agree that the process of moving states away, w/a cat, is stressful. A cancelled flight, 90 minutes to rebook, no place to stay, medication that was to be refrigerated and trying to find a local pet friendly hotel significantly added to the stress. Had I been able to rebook (per priority boarding SOP) I could have called the place I had just checked out of as my room most likely was just as I'd left it, including with pet supplies (which also had to be repurchased). While waiting to rebook, many of us called Alaska Airlines 800 number hoping to get a new flight; the waiting time -- this is not a joke -- was eight (8) hours, which dropped to "just" two (2) hours about 45-minutes later. Due to the cancellation I had to spend $268.75 and I still have not been refunded for the change in ticket (first class to regular). Each time I've call, five times now, the wait time was absurd, or a message of call back is given. Hopefully visiting the airport and talking with an agent face to face will be the final chapter to this experience. Alaska has been my go to air travel for years, hopefully this trip was just a hiccup. A system that forces customer's to spend hours of their time (money) to get a just due refund is not a working system. I suggest Alaska Airlines hire more representatives to handle calls; time is more valuable than money, spending 90 minutes to rebook a flight, without the difference being automatic is absurd. There are things called computers, they do amazing things. Once the flight was cancelled, only three agents were working to rebook the PAX, This too was unacceptable. First class ticket holders pay for first-class service, this should include rebooking on flights that are cancelled. I recall a time when flights were cancelled the airline would offer a hotel should the next flight not be until the following day? I had no idea that was no longer SOP; many could return home, several of us could not. The agents were pleasant once the PAX had their turn to rebook, this was true down in baggage area as well. The flight out the next day was also what I'd come to find of Alaska Airlines.

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.

I was in first class and literally the men behind me were so aggressively loud I moved myself to economy. This has become so common on Delta - people using audio without headphones, and men on 12am / late night flights drinking and yelling to talk to each other which prevents anyone around them from resting. Pretty crazy to have to move from first to economy (poorer service, less comfort...). Wild wild. Looking into other airlines.

Flight was delayed by 3-hours and their fix was… complimentary pretzels.

The crew, and fellow passengers, were super gracious and kind. There seemed to be plenty of bin space even though the plane was full. It’s nice to get a glass of wine with dinner in Premiere seating, and there was a lot of food.

Everything I mentioned earlier - the airbus was more comfortable indeed and the experience was further enhanced.

The plane was an older model, so it wasn’t as comfortable as others. The flight attendants were not helpful during onboarding. It was a full flight so there was chaos finding space for baggage.

They delayed the flight from 9:00 to 11:55 At 11:45 they canceled the flight. I paid a premium price for the tickets with poor service

My flight was canceled a few hours before boarding. I was rebooked on Copa airlines and missed an important meeting .

OK, we were delayed and had to de plane and reboard.

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

Staff were good. My seat was in need of repair, but for a short flight was not problematic. Usual basic snack and drink setup that you'll find on any US carrier. Over, a decent, basic flight.

Complimentary light meal would be appreciated. But great flight crew service on all legs

Flight delayed for more than 16 hrs and no effort was spent to provide an alternate

Women boarding passengers at the gate was absolutely rude and disrespectful of passengers. The flight attendant was absolutely delightful! Smiling and connected with the passengers. So happy. The seats are cramped and uncomfortable but I guess that’s just the way it is Communication regarding flight was excellent

it was a very short flight so my expectations were low.

Very disappointing given gate agent behavior. Filed a formal complaint with United.

Everything you need to know for your flight from Ontario to Montana

Information on your arrival and departure airports