MSO - ONT

$191 Find Cheap Flights from Missoula 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 Missoula to Ontario departing on 3/7. 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 Ontario

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

Cheapest round-trip
$217
Overall average: $480
Alaska Airlines
Tue 3/3Tue 3/10
MSO - ONT • 1 stop
Cheapest one-way
$191
Typical prices: $279-$293
United Airlines
Sat 3/7
MSO - ONT • 1 stop
Top airlines
Alaska Airlines
Cheapest • from $217 (round-trip)
Alaska Airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
January
Cheapest • 34% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Ontario!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Missoula to Ontario (MSO-ONT)

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

Tue, Mar 3 - Tue, Mar 10
Alaska Airlines Logo
6:23 am - 11:08 am
MSO
-
ONT
5h 45m
1 stop
Alaska Airlines Logo
4:02 pm - 11:59 pm
ONT
-
MSO
6h 57m
1 stop
$217Alaska Airlines
Thu, Feb 26 - Thu, Mar 5
Alaska Airlines Logo
6:23 am - 11:08 am
MSO
-
ONT
5h 45m
1 stop
Alaska Airlines Logo
4:02 pm - 11:59 pm
ONT
-
MSO
6h 57m
1 stop
$261Alaska Airlines
Tue, Mar 3 - Tue, Mar 10
Alaska Airlines Logo
4:20 pm - 7:14 pm
MSO
-
ONT
27h 54m
2 stops
Alaska Airlines Logo
4:02 pm - 11:59 pm
ONT
-
MSO
6h 57m
1 stop
$275Alaska Airlines
Tue, Feb 24 - Sat, Feb 28
Alaska Airlines Logo
6:23 am - 11:08 am
MSO
-
ONT
5h 45m
1 stop
Alaska Airlines Logo
7:00 am - 12:59 pm
ONT
-
MSO
4h 59m
1 stop
$283Alaska Airlines
Tue, May 12 - Fri, May 15
Alaska Airlines Logo
3:55 pm - 10:32 pm
MSO
-
ONT
7h 37m
1 stop
Alaska Airlines Logo
4:03 pm - 11:56 pm
ONT
-
MSO
6h 53m
1 stop
$286Alaska Airlines
Tue, Feb 24 - Sat, Feb 28
United Airlines Logo
2:34 pm - 8:50 pm
MSO
-
ONT
7h 16m
1 stop
United Airlines Logo
6:10 am - 2:03 pm
ONT
-
MSO
6h 53m
1 stop
$287United Airlines
Wed, Apr 8 - Sat, Apr 11
Delta Logo
6:04 pm - 11:51 pm
MSO
-
ONT
6h 47m
1 stop
Delta Logo
5:45 pm - 11:18 pm
ONT
-
MSO
4h 33m
1 stop
$298Delta
Thu, Feb 26 - Thu, Mar 5
Delta Logo
1:16 pm - 10:37 pm
MSO
-
ONT
10h 21m
2 stops
Delta Logo
6:00 am - 12:26 pm
ONT
-
MSO
5h 26m
1 stop
$325Delta
Fri, Mar 20 - Tue, Mar 24
Alaska Airlines Logo
4:23 pm - 9:39 am
MSO
-
ONT
18h 16m
1 stop
Alaska Airlines Logo
10:33 am - 11:57 pm
ONT
-
MSO
12h 24m
1 stop
$343Alaska Airlines
Fri, Feb 20 - Mon, Feb 23
Delta Logo
6:10 pm - 11:49 pm
MSO
-
ONT
6h 39m
1 stop
Delta Logo
5:00 pm - 11:30 pm
ONT
-
MSO
5h 30m
1 stop
$346Delta
Booking Insights

KAYAK's insights & trends for Missoula to Ontario flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Missoula to Ontario, 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 Missoula to Ontario is January, where tickets cost $236 (return) on average. On the other hand, the most expensive months are March and December, where the average cost of round-trip tickets is $480 and $454 respectively.

Good to know

Low seasonMay
Cheapest flight$191
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from Missoula to Ontario

When to book flights from Missoula to Ontario

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

  • What is the cheapest flight from Missoula to Ontario?

    In the last 3 days, the lowest price for a flight from Missoula to Ontario was $191 for a one-way ticket and $217 for a round-trip.

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

    A passport is not required to fly from Missoula to Ontario.

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

    When flying out of Missoula you will be using Missoula Johnson-Bell Field. You will be landing at Ontario, also known as Ontario.

  • Which aircraft models fly most regularly from Missoula to Ontario?

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

  • Which airline alliances offer flights from Missoula to Ontario?

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

  • Which is the best airline for flights from Missoula to Ontario, Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from Missoula to Ontario are Alaska Airlines and Delta. With an average price for the route of $353 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $340 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Missoula 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 Missoula to Ontario.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Missoula 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 Missoula 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 Missoula with another airline. Booking your flights between Missoula 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 Missoula 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 Missoula up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Missoula to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Missoula 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 Missoula 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
Alaska AirlinesOverall score based on 11829 reviews
7.0Entertainment
8.1Boarding
7.8Comfort
8.5Crew
7.1Food
Airline reviews

Due to plane delays on both legs of my flight home, I had to be rerouted from Santa Rosa to Las Vegas on Skywest and then to DCA on American. SkyWest airlines sat on runway in Las Vegas for 20 minutes waiting for gate to clear. My boarding pass for American that I was given by Alaska was incomplete and the Las Vegas airport lacked signage and departure boards. I barely made my flight bc it was so confusing. American Airlines has a much better wireless connection. I’ll never fly Alaska again. It clearly has problems.

2.0 MediocreAnonymous, Jan 2026
STS - SAN
Read more Alaska Airlines reviews

Due to plane delays on both legs of my flight home, I had to be rerouted from Santa Rosa to Las Vegas on Skywest and then to DCA on American. SkyWest airlines sat on runway in Las Vegas for 20 minutes waiting for gate to clear. My boarding pass for American that I was given by Alaska was incomplete and the Las Vegas airport lacked signage and departure boards. I barely made my flight bc it was so confusing. American Airlines has a much better wireless connection. I’ll never fly Alaska again. It clearly has problems.

Great. I did have a little issue getting into the Lounge, which is likely more an American Airlines issue. I did not carry my physical AAdvantage Executive credit card with me on this trip, which Admirals Club membership is a part of the benefits of having this card. The instructions on the AA website and the Citi cards website make it seem like you don't need the physical card, as both sites state you can enter with your boarding pass and driver's license. But both lounges said you were required to present the physical card (and not the digital version, via Apple Pay), as only the physical card says "Admirals Club" on the back.I also do not have a physical Admirals Club membership card, so while both lounges eventually let me in, both denied me entrance initially for this reason.

I paid for wifi and it never worked... it was miserable. I couldn't access my shared files to work on the plane, it didn't work on my phone. I paid for nothing but frustration and continual refreshing, hoping it would work

We left about 30 minutes late due to ramp issues. It did not impact me, but I know others on the flight had very tight connections to Maui.

Everything from the time I booked my flight through to the end when I got home was smooth and wonderful. Service was great, the flight attendants were attentive and there were no outstanding delays.

Delayed and no entertainment? I also forgot my headphones and immediately reported it and have not heard back yet.

The crew was very friendly. Boarding was quick and efficient.

Again, very smooth and all of the Alaska folks were great. They continue to meet all my needs.

Overall it was fine, however one of my two checked bags did not arrive and I was told it was left in Palm Springs. I don't understand how one of the two bags made it through fine but the other got lost .

No WiFi. Terrible food. Very long walk to the gate and from the gate after landing. Gate changed without notice.

I usually get upgraded so my experience is usually amazing. I did not get upgraded this time - which was fine - but the wifi had issues, the monitors were going in & out, & (though not Delta's fault) one of the gentlemen next to me desperately needed a shower.

I really liked the legroom. I am 6’4”.a at For some reason our seats were not together and using the app to fix it didn’t work. Passengers were nice enough to move for us but you should absolutely ensure a parent sits with their child.

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

The crew took good care of us. The flight from ATL to SFO is a longer one, and there were multiple beverage offerings. I like the 757's that Delta uses. Good airplane that is comfortable. I do wish Delta would separate Priority boarding from the better seats. I would gladly take a smaller seat in an open row than be jammed into Comfort just to get priority boarding, just to make sure I don't have to check a bag.

Gate agent rushed to fill hot jetway with crowd so it took over 12 minutes to go from gate to plane. Just like a discount airline Pooly prepared cabin and third time that claim of rough air prevented any cabin service. Friends on a Southwest flight at similar time had service.

I was uncomfortably cold on the plane. Other than that it was uneventful and therefore as enjoyable as a plane ride can be.

Food was surprisingly good but the WiFi was not great

My flight was extremely cold. I had a jacket and a cover was left in each seat. The cover was extremely thin and I have a disability, fibromyalgia and arthrithis and AC air is the worst. I closed my vent and my husbands vent and it still was frigid. I asked the attendant if I could get another cover and she quickly almost dismissively and totally unconcerned stating, (I quote) (one per chair) and walked off so quickly that I didn't get a chance to explain to her that I literally have adisability. I didnt want to make a seen so I set on that flight for over 5 hours in pain, joints locking up and extremely uncomfortable. When my fibromyalgia flares up my joints not only ache but they will lock up also and it takes me days to get back to my regular self even though I take medication for it. I felt like it would not have hurt anyone at all for her to just give me an extra cover because I'm sure they have all types of medical issues in people that fly every day.

the whole trip was smooth, and as comfortable as flying is these days. flight crew was friendly and very courteous and helpful.

First class ticket gets you a choice of chips or nuts. . Just like economy Southwest. Also no screen in the seats. This is first class???!

Flight arrived 30 min early and bag was waiting at the baggage pickup. United Club HNL was one of the nicest in the system

Yet another flight in which beverage and snack service was skipped. Other that that, firmly mediocre. Landed early, to gate late due to congestion at the gates. Airline's fault or airports fault: unknown.

Teeny tiny bathrooms, crew was not realistic about when we'd arrive.

Unbelievably poor service from flight attendants. They didn’t even do water service on a four hour flight. Just disrespectful.

Flight was late - I was downgraded from first class to coach

United needs to step up their game. Delayed flight leaving Seattle, San Francisco. Older aircraft, not very comfortable.

Plane boarded early a quickly, was mostly full. We left close to on time. And landed early.

7 hours delayed due to operational issues on United’s end. Basically laziness.

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

Information on your arrival and departure airports