ONT - MSO

$115 Find Cheap Flights from Ontario to Missoula

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 Missoula departing on 10/12. 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

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

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

Cheap Flights from Ontario to Missoula (ONT-MSO)

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

Thu, Aug 14 - Mon, Aug 18
Frontier Logo
5:21 pm - 11:54 amONT-MSO
17h 33m1 stop
Frontier Logo
12:40 pm - 11:50 pmMSO-ONT
12h 10m1 stop
$227Frontier
Find Deal
Mon, Sep 15 - Mon, Sep 22
Hawaiian Airlines Logo
6:00 am - 3:18 pmONT-MSO
8h 18m1 stop
Hawaiian Airlines Logo
6:40 pm - 12:03 amMSO-ONT
6h 23m1 stop
$240Hawaiian Airlines
Find Deal
Tue, Sep 16 - Fri, Sep 19
Delta Logo
4:40 pm - 12:18 amONT-MSO
6h 38m1 stop
Delta Logo
5:30 am - 8:57 amMSO-ONT
4h 27m1 stop
$241Delta
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Tue, Sep 16 - Tue, Sep 23
Delta Logo
11:50 am - 12:18 amONT-MSO
11h 28m2 stops
Delta Logo
5:30 am - 8:57 amMSO-ONT
4h 27m1 stop
$246Delta
Find Deal
Tue, Sep 16 - Wed, Sep 24
Delta Logo
11:50 am - 12:18 amONT-MSO
11h 28m2 stops
Delta Logo
1:05 pm - 10:40 pmMSO-ONT
10h 35m2 stops
$251Delta
Find Deal
Sat, Sep 13 - Thu, Sep 25
Alaska Airlines Logo
5:49 pm - 11:59 pmONT-MSO
5h 10m1 stop
Alaska Airlines Logo
5:45 am - 9:26 amMSO-ONT
4h 41m1 stop
$259Alaska Airlines
Find Deal
Sat, Sep 13 - Thu, Sep 25
Delta Logo
9:50 am - 5:07 pmONT-MSO
6h 17m1 stop
Delta Logo
5:30 am - 8:57 amMSO-ONT
4h 27m1 stop
$260Delta
Find Deal
Sun, Sep 14 - Mon, Sep 22
Alaska Airlines Logo
6:00 am - 3:18 pmONT-MSO
8h 18m1 stop
Alaska Airlines Logo
5:45 am - 9:26 amMSO-ONT
4h 41m1 stop
$284Alaska Airlines
Find Deal
Mon, Sep 1 - Tue, Sep 30
United Airlines Logo
5:10 am - 1:34 pmONT-MSO
7h 24m1 stop
United Airlines Logo
2:33 pm - 8:24 pmMSO-ONT
6h 51m1 stop
$311United Airlines
Find Deal
Wed, Aug 27 - Sat, Aug 30
United Airlines Logo
5:10 am - 1:34 pmONT-MSO
7h 24m1 stop
United Airlines Logo
6:30 am - 12:32 pmMSO-ONT
7h 02m1 stop
$330United Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Ontario to Missoula flights

Get data-powered insights and trends into flights from Ontario to Missoula 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 Missoula?

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

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

When flying from Ontario to Missoula, you should consider leaving on a Wednesday and avoid Sundays if you are looking for the best rates. For your return to Ontario, you’ll find the best rates on Thursdays and the most expensive ones on Tuesdays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Missoula, 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 Missoula is January, where tickets cost $264 (return) on average. On the other hand, the most expensive months are February and June, where the average cost of round-trip tickets is $764 and $554 respectively.

Good to know

Low seasonJanuary
Cheapest flight$115
Best time to beat the crowds with an average 38% drop in price.
Most popular time to fly and prices are also 5% lower on average.
Flight from Ontario to Missoula

When to book flights from Ontario to Missoula

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

  • What is the cheapest flight from Ontario to Missoula?

    In the last 3 days, the lowest price for a flight from Ontario to Missoula was $115 for a one-way ticket and $227 for a round-trip.

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

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

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

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

  • Which airline alliances offer flights from Ontario to Missoula?

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

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

    The two airlines most popular with KAYAK users for flights from Ontario to Missoula are Alaska Airlines and Delta. With an average price for the route of $405 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 $284 and an overall rating of 8.0.

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

    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 Missoula.

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

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

    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 Missoula with an airline and back to Ontario with another airline. Booking your flights between Ontario and MSO 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 Missoula?

    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 Missoula 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 airlines flying from Ontario to Missoula

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Missoula. 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 Missoula? 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 10000 reviews
8.5Crew
7.1Food
8.1Boarding
7.8Comfort
7.1Entertainment
Airline reviews

Departing flight to San Diego was delayed. Return flight from SD to SBP was delayed. Not terrible but not ideal

4.0 OkaySean, Jul 2025SBP - SAN
Read more Alaska Airlines reviews

Departing flight to San Diego was delayed. Return flight from SD to SBP was delayed. Not terrible but not ideal

I always heard this was a terrible airline but I was happy to experience otherwise. The seats were more comfortable than delta. They did board late and gate was a little chaotic, which is to be expected for a budget airline. I would definitely do it again for that price.

My email notifications were silenced, so I didn't get word that the departing flight had changed gates. It wasn't until I noticed that few people had gathered for the flight that I checked the airport schedule board, 20 minutes before boarding. I then told several people at the old gate of the change. If I was to receive a text I would have been notified of the change earlier, Or to hear an announcement over the airport intercom.

Canceled flight. No communication of this prior. Rescheduled to next day. Our good seats we purchased months ago turned into last row middle. No apology, reason, nor compensation for time and $ spent.

delayed flight 3 hours, then took 45 min to get to gate and another 10 min to open door

Delayed flight both ways. Then, on the return flight, we were stuck on the tarmac for at least 30+ minutes. Idk what happened, but this was a bad experience.

The plane was put out of service and had to wait for a new plane to be assigned. No one had any information and the information on the screens was never updated. The call wait time was 2 hours and the estimated time for text assistance was 55 minutes which was a lie because after 55 minutes nothing happened. I understand that delays happen but to not have anyone available to provide any update or reassurance was just negligent. Also, what is the point of having an 800 number if no one answers it and don’t get me started on the text message system. Ridiculous!

Great flight, no bumps to speak of, pleasant crew, good inflight entertainment choices

Coffee or tea service would be nice for an evening flight, water or juice not good enough.

Very expensive for short flights. Can’t communicate with Alaska Air about passport issue at check-in. Also no replies to my text messages. Wanted to extend our vacation for two more days but this expensive flight ticket is called SAVER and I couldn’t make changes or cancel or get a credit even, so I paid another airline for the return trip. Extremely disappointed.

My husband upgraded our seats and I don't know if it was due to the type of planet was or if they didn't upgrade our seats. We were supposed to be in I believe comfort seats and they were just as tight as any other seat- no leg room and we are very tall people but at least it wasn't extremely cold. My husband did put in a complaint about our seating because he paid extra and if we would have known that the space and the tightness would have been the same, we just would have gotten the emergency row emergency row seats that we normally get. We love Delta but both our flights coming home we're not good. Oh I forgot to mention that on our flight to Hawaii our luggage wheels got broke and we had to purse new luggage on vacation then we never had this problem so we didn't know protocol and reported it after we got home only for them to tell is we only had 24hrs to report the damage. Not sure what was going on with Delta this vacation trip.

Crew was excellent. Comfort seats not as nice as other kinds of planes.

It was a great flight and the stewards and stewardess were all kind and accommodating!! The seats were comfortable and entertainment screen excellent!

There are 4 flights in consecutive gates with about the same departure time. Two flights were boarding at the same time. One was delayed or boarding would be happening at the same time. I am not sure what Delta and LAX need to do to have a better layout at the end of Terminal 2

There was a security issue at the airport and we were unable to land. We circled endlessly and then landed at another airfield for fuel. We then circled the airport again, almost landed but didn’t fully touch down before circling again. I am thankful to the crew for keeping us safe- the issue was the airline and staff at the airport getting us seats on our connecting flights. That part was hours of searching for someone and getting in double my steps.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

737-800 in first class was pretty dumpy. Seat had an uncomfortable angle, storage under the seat was blocked so even my very modest backpack didn't fit, power outlet was flaky. Weird tiny seat pockets that couldn't hold a gallon ziploc bag, emesis bag missing, etc. etc. No in-flight service due to turbulence. Crew was excellent, boarding was smooth despite a full flight.

Delta flight was on time, seats were comfortable, and crew was nice.

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

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