ONT - MSO

$132 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 5/24. 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 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 Flight Deals 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.

Recent round-trip flight deals from Ontario to Missoula

KAYAK's recommended round-trip deals from the most popular airlines that fly from Ontario to Missoula.
Discover the best prices for you by selecting your travel dates on KAYAK.
Alaska Airlines Logo
6:00 am - 12:13 pmONT-MSO
5h 13m1 stop
Alaska Airlines Logo
6:39 pm - 11:59 pmMSO-ONT
6h 20m1 stop
$238Alaska Airlines
Find Deal
Wed, Jun 4 - Wed, Jun 11
Delta Logo
6:00 am - 5:39 pmONT-MSO
10h 39m2 stops
Delta Logo
5:30 am - 8:52 amMSO-ONT
4h 22m1 stop
$250Delta
Find Deal
Tue, Jun 3 - Tue, Jun 10
Hawaiian Airlines Logo
4:45 pm - 11:36 pmONT-MSO
5h 51m1 stop
Hawaiian Airlines Logo
6:42 am - 10:57 amMSO-ONT
5h 15m1 stop
$251Hawaiian Airlines
Find Deal
Wed, May 21 - Mon, May 26
Delta Logo
10:01 am - 5:39 pmONT-MSO
6h 38m1 stop
Delta Logo
5:30 am - 8:52 amMSO-ONT
4h 22m1 stop
$255Delta
Find Deal
Tue, Jun 3 - Thu, Jun 12
Alaska Airlines Logo
7:30 am - 1:19 pmONT-MSO
4h 49m1 stop
Alaska Airlines Logo
6:36 pm - 12:13 amMSO-ONT
6h 37m1 stop
$264Alaska Airlines
Find Deal
Sat, Jun 7 - Mon, Jun 16
Frontier Logo
12:59 am - 11:55 amONT-MSO
9h 56m1 stop
Frontier Logo
12:40 pm - 11:50 pmMSO-ONT
12h 10m1 stop
$321Frontier
Find Deal
Sun, Jun 1 - Fri, Jun 13
Hawaiian Airlines Logo
5:55 pm - 12:06 amONT-MSO
5h 11m1 stop
Hawaiian Airlines Logo
6:39 pm - 10:46 pmMSO-ONT
5h 07m1 stop
$324Hawaiian Airlines
Find Deal
Thu, May 22 - Tue, May 27
United Airlines Logo
1:33 pm - 9:21 pmONT-MSO
6h 48m1 stop
United Airlines Logo
6:20 am - 12:31 pmMSO-ONT
7h 11m1 stop
$352United Airlines
Find Deal
Thu, Jun 5 - Wed, Jun 11
United Airlines Logo
1:33 pm - 9:21 pmONT-MSO
6h 48m1 stop
United Airlines Logo
6:20 am - 12:31 pmMSO-ONT
7h 11m1 stop
$362United Airlines
Find Deal
Mon, Jun 2 - Thu, Jun 12
Frontier Logo
5:21 pm - 11:55 amONT-MSO
17h 34m1 stop
Frontier Logo
12:40 pm - 9:01 amMSO-ONT
21h 21m1 stop
$432Frontier
Find Deal
Thu, Jun 19 - Mon, Jun 23
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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.

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 April, where the average cost of round-trip tickets is $764 and $504 respectively.

Good to know

Low seasonJanuary
High seasonAugust
Cheapest flight$132
Best time to beat the crowds with an average 37% drop in price.
Most popular time to fly and prices are also 2% 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 $132 for a one-way ticket and $238 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?

    Star Alliance, oneworld, and SkyTeam 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, Delta or Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from Ontario to Missoula are Delta and Alaska Airlines. With an average price for the route of $337 and an overall rating of 8.0, Delta is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $452 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.

Top 3 airlines serving 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 9968 reviews
7.1Food
8.2Boarding
8.5Crew
7.9Comfort
7.1Entertainment
Airline reviews

My youngest didn't have a assigned seat until we biard6the plane.

2.0 MediocreStephanie, Apr 2025SAN - SLC
Read more Alaska Airlines reviews

My youngest didn't have a assigned seat until we biard6the plane.

I got the last seat on the plane, in the back in the corner against the window, and I paid a competitive price for my ticket several weeks before the flight.

Long delay before boarding. By the time I was informed of the delay I was already at the gate.

There was no seating at the gate, no where to charge your devices, super crowded. Boarding in group F meant all luggage space was taken when it was time for me to board. The boarding crew was short with everyone and seemed irritated. The luggage space was insufficient, the seat was too small for me (6'4") and very uncomfortable trip. I was in a middle seat between a person snoring the whole trip and a person with very strong body odor. The flight crew was terse and unfriendly, seemed irritated and impatient. Yelled a lot at people with earbuds in, understandable. Finally, we arrived 10 minutes early, only to sit on the tarmac for 20 minutes and wait for a gate. Worst flight experience I've had in years.

Check your emails that you sent me. 9 emails were sent telling me that my flight is Delayed. Each one with a different time 7:10, 7:55, 9:31, 9:09, 9:29, 9:44, 10:00, 9:49, and 10:10. That was how my experience went.

It was my first time flying Alaska Airlines and first time flying from Santa Rosa airport. The staff was very professional and friendly. Their instructions were clear and any question was answered satisfactorily. My seat was comfortable and the in-flight beverage service very adequate for the duration of the flight. We arrived ahead of the scheduled landing time and deplaning was simple. I look forward to flying with Alaska again.

Personal demeanor not good on flight returning to LAX..Great and superb on the way to Portland

No non-alcoholic drinks available except water and small apple juice cans.

Flight attendant took my carefully folded coat and flung it across the aisle to the bin across the way. Where one of the passengers rescued it for me, because that just wasn’t right!!

First time flying with any airline that has decent seating. Great experience crew was friendly and the pilot was as well.

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

Thank you for not flipping the plane on the run way. You guys get a 5 star rating for the flight!!!

Boarding is, as it always is… horrible. Gate lice. Slow moving zones. Too many people with carry ons

It was terrible, if they ran flights on time it would make a big difference.

Delta seems to be improving in many areas, except they are super bad with the food available. Bring back normal food service on long flights.

I actually received a notification from kayak on email but not one by text from Delta when my departure gait changed and I almost missed my flight

New boarding doesn't make sense. Filling front first is slow.

Delta flight was great from the check in all the way to arrival. However, I had a very bad experience. I requested a wheelchair and the wheelchair employee that went to pick me up from the plane in Boston to bring me to the baggage claims told me I have to pay him. I was under the impression that it was a free service and I usually give tips but the person forced me to pay and since I said no because I was upset with his demand when my daughter walked in to pick me up he demanded payment from my daughter who paid him thinking maybe now it is a charged service.

Horrible. Grateful to be alive but spent 13 hours at airport only to return back to my familys house and flight changed to next day. They tried to fix a part on plane, had no back up plane and after 10 hours , reattempted the flight and it STILL wasn't fixed. We got a meal voucher and rescheduled flight but there should be some other compensation for the 15 hours spent in airport

My seat was changed at the last minute and I was moved to the last row, right next to the bathroom despite selecting my seat well in advance. I was also made to check my carry on due to space but when I got on the plane there was significant empty overhead space. Picking up my carry on from the luggage carousel added time to my trip which had already been extended due to delay.

The reps working at the airport counter were dumber than a second coat of paint.

The seats were awful, hard plastic covered in sheet vinyl. The airline tries to scam you into paying extra to get seat together when the flight wasn’t full. They were going to separate a family with young children but my wife who had a row to herself gave up her seat so the young mom could be with her young boys. I’m never giving this airline my money again.

It was a short flight so no food or entertainment….

Frontier had yet another flight cancellation. Have never made a complete round trip with this airline without at least one leg getting cancelled. Miserable flights - dirty, uncomfortable planes that apparently always have issues since I've had multiple delays and cancellations with them.

Flight was delayed 3 times, would have been nice to have received text message instead of email notifications. Frontier app wasn’t even updated accordingly, no gate number disclosed. No agent at front desk of gate to inform of delay. Very confused and left if the dark

They changed the timing , first delayed by 4 hours then went back to 40 mins late, we had to run back to airport to not miss our flight. This is ridiculous

No frills for sure. No gate announcements about flight delay, not even water to drink on the flight.

I loked walking out on the tarmac to board and no first class. I didn't like that they have no snacks or onboard wifi to bide your time.

It was a redeye flight, so every passenger just wanted to sleep, but through the entire flight, the flight crew made announcements over the loudspeaker at maximum volume every few minutes making sleep impossible. For example: it’s 2am, and the crew decides to give an extremely detailed announcement about snacks and beverages for sale. And 3am is the perfect time to wake up everyone with a lengthy announcement about how to get a coffee refill and how to take advantage of new offer from frontier for a credit card.

The takeoff was the smoothest I've ever experienced on any airline and this is the first time I've flown on frontier so this was an extremely pleasant surprise!

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

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