$156+ Cheap flights from Missoula to Ontario (MSO - ONT)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
MSO — ONT
Jul 3 — Jul 101
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Missoula to Ontario with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Missoula to Ontario
Cheapest
Best
Last-minute
One-way
Cheapest flights from Missoula to OntarioExplore the most affordable flight options available from Missoula to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 3, 2026.
Explore the most affordable flight options available from Missoula to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 3, 2026.
This Delta deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:10 pm
MSO
- ONT
1 stop6h 38m
Delta
Tue 10/209:55 am
ONT
- MSO
1 stop6h 32m
Delta
Deal found 6/2![Delta logo]()
$311
This Alaska Airlines deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/115:41 pm
MSO
- ONT
1 stop7h 11m
Alaska Airlines
Mon 8/243:07 pm
ONT
- MSO
1 stop6h 49m
Alaska Airlines
Deal found 5/31![Alaska Airlines logo]()
$321
This Delta deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/146:27 pm
MSO
- ONT
1 stop6h 07m
Delta
Sun 8/305:05 pm
ONT
- MSO
1 stop6h 13m
Delta
Deal found 6/2![Delta logo]()
$331
This Delta deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/316:27 pm
MSO
- ONT
1 stop4h 56m
Delta
Mon 9/712:55 pm
ONT
- MSO
1 stop3h 59m
Delta
Deal found 6/1![Delta logo]()
$336
This Alaska Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/104:16 pm
MSO
- ONT
1 stop8h 08m
Alaska Airlines
Sat 9/123:14 pm
ONT
- MSO
1 stop6h 42m
Alaska Airlines
Deal found 6/1![Alaska Airlines logo]()
$344
This Alaska Airlines deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:15 am
MSO
- ONT
1 stop7h 54m
Alaska Airlines
Sat 9/57:12 am
ONT
- MSO
1 stop5h 13m
Alaska Airlines
Deal found 5/30![Alaska Airlines logo]()
$354
This Delta deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/246:29 pm
MSO
- ONT
1 stop6h 20m
Delta
Sat 7/45:21 pm
ONT
- MSO
1 stop4h 51m
Delta
Deal found 6/1![Delta logo]()
$361
This Delta deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/146:27 pm
MSO
- ONT
1 stop6h 07m
Delta
Sat 8/295:05 pm
ONT
- MSO
1 stop5h 07m
Delta
Deal found 6/2![Delta logo]()
$371
This Delta deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/45:30 am
MSO
- ONT
1 stop4h 18m
Delta
Tue 8/115:05 pm
ONT
- MSO
1 stop6h 13m
Delta
Deal found 6/1![Delta logo]()
$385
This Alaska Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/212:05 pm
MSO
- ONT
1 stop21h 59m
Alaska Airlines
Mon 8/243:07 pm
ONT
- MSO
1 stop6h 49m
Alaska Airlines
Deal found 6/1![Alaska Airlines logo]()
$392
This Delta deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/165:30 am
MSO
- ONT
1 stop4h 18m
Delta
Sun 8/309:43 am
ONT
- MSO
1 stop7h 04m
Delta
Deal found 6/2![Delta logo]()
$396
Best flights from Missoula to OntarioDiscover carefully curated flight deals from Missoula to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 3, 2026.
Discover carefully curated flight deals from Missoula to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 3, 2026.
This Alaska Airlines deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:15 am
MSO
- ONT
1 stop7h 54m
Alaska Airlines
Sat 9/57:12 am
ONT
- MSO
1 stop5h 13m
Alaska Airlines
Deal found 5/30![Alaska Airlines logo]()
$354
This Delta deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/45:30 am
MSO
- ONT
1 stop4h 18m
Delta
Tue 8/115:05 pm
ONT
- MSO
1 stop6h 13m
Delta
Deal found 6/1![Delta logo]()
$385
This Alaska Airlines deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/212:05 pm
MSO
- ONT
1 stop21h 59m
Alaska Airlines
Mon 8/243:07 pm
ONT
- MSO
1 stop6h 49m
Alaska Airlines
Deal found 6/2![Alaska Airlines logo]()
$392
This Delta deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/225:35 am
MSO
- ONT
1 stop4h 12m
Delta
Mon 7/275:10 pm
ONT
- MSO
1 stop6h 18m
Delta
Deal found 5/29![Delta logo]()
$413
This Alaska Airlines deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/314:16 pm
MSO
- ONT
1 stop8h 08m
Alaska Airlines
Mon 9/77:12 am
ONT
- MSO
2 stops14h 44m
Alaska Airlines
Deal found 6/2![Alaska Airlines logo]()
$427
This Alaska Airlines deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/184:16 pm
MSO
- ONT
2 stops26h 02m
Alaska Airlines
Mon 9/213:14 pm
ONT
- MSO
1 stop6h 42m
Alaska Airlines
Deal found 6/2![Alaska Airlines logo]()
$427
Last-minute flights from Missoula to OntarioDiscover last-minute flight deals from Missoula to Ontario. Data last updated June 3, 2026 and is based on user searches.
Discover last-minute flight deals from Missoula to Ontario. Data last updated June 3, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/165:00 pm
MSO
- ONT
1 stop7h 11m
Alaska Airlines
Tue 6/235:26 pm
ONT
- MSO
1 stop5h 30m
Alaska Airlines
Deal found 5/29![Alaska Airlines logo]()
$436
This Alaska Airlines deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/225:41 pm
MSO
- ONT
1 stop7h 10m
Alaska Airlines
Sat 7/410:54 am
ONT
- MSO
1 stop5h 07m
Alaska Airlines
Deal found 5/31![Alaska Airlines logo]()
$463
This Alaska Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/235:41 pm
MSO
- ONT
1 stop7h 10m
Alaska Airlines
Mon 6/295:26 pm
ONT
- MSO
1 stop5h 30m
Alaska Airlines
Deal found 6/1![Alaska Airlines logo]()
$411
This Alaska Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/235:41 pm
MSO
- ONT
1 stop7h 10m
Alaska Airlines
Tue 6/305:26 pm
ONT
- MSO
1 stop5h 30m
Alaska Airlines
Deal found 6/1![Alaska Airlines logo]()
$456
This Delta deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/246:29 pm
MSO
- ONT
1 stop6h 20m
Delta
Sat 7/45:21 pm
ONT
- MSO
1 stop4h 51m
Delta
Deal found 6/1![Delta logo]()
$361
This Alaska Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/245:00 pm
MSO
- ONT
1 stop7h 11m
Alaska Airlines
Fri 7/39:20 pm
ONT
- MSO
1 stop25h 36m
Alaska Airlines
Deal found 6/1![Alaska Airlines logo]()
$462
This Alaska Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/257:03 am
MSO
- ONT
1 stop7h 06m
Alaska Airlines
Mon 6/295:26 pm
ONT
- MSO
1 stop5h 30m
Alaska Airlines
Deal found 6/1![Alaska Airlines logo]()
$421
This Alaska Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/257:03 am
MSO
- ONT
1 stop7h 06m
Alaska Airlines
Wed 7/15:54 pm
ONT
- MSO
1 stop5h 02m
Alaska Airlines
Deal found 6/1![Alaska Airlines logo]()
$466
This Alaska Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/257:03 am
MSO
- ONT
1 stop7h 06m
Alaska Airlines
Fri 7/39:20 pm
ONT
- MSO
1 stop12h 22m
Alaska Airlines
Deal found 6/1![Alaska Airlines logo]()
$472
This Delta deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/265:31 am
MSO
- ONT
1 stop4h 19m
Delta
Sat 7/45:21 pm
ONT
- MSO
1 stop4h 51m
Delta
Deal found 6/1![Delta logo]()
$371
This Alaska Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/267:03 am
MSO
- ONT
1 stop5h 11m
Alaska Airlines
Mon 6/295:26 pm
ONT
- MSO
1 stop5h 30m
Alaska Airlines
Deal found 6/1![Alaska Airlines logo]()
$461
This Delta deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/225:35 am
MSO
- ONT
1 stop4h 12m
Delta
Mon 7/275:10 pm
ONT
- MSO
1 stop6h 18m
Delta
Deal found 5/29![Delta logo]()
$413
One-way flights from Missoula to OntarioSearch for one-way flight options from Missoula to Ontario. Find affordable one-way fares based on user searches. Data last updated June 3, 2026.
Search for one-way flight options from Missoula to Ontario. Find affordable one-way fares based on user searches. Data last updated June 3, 2026.
This Alaska Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/314:16 pm
MSO
- ONT
1 stop8h 08m
Alaska Airlines
Deal found 6/1![Alaska Airlines logo]()
$156
This Alaska Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/257:03 am
MSO
- ONT
1 stop7h 06m
Alaska Airlines
Deal found 6/1![Alaska Airlines logo]()
$166
This Delta deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/166:29 pm
MSO
- ONT
1 stop6h 20m
Delta
Deal found 6/1![Delta logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1610:24 am
MSO
- ONT
1 stop22h 39m
Multiple Airlines
Deal found 6/1![Multiple Airlines logo]()
$195
This Delta deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/175:35 am
MSO
- ONT
1 stop4h 12m
Delta
Deal found 5/31![Delta logo]()
$196
This Kiwi.com deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/2810:25 am
MSO
- ONT
1 stop10h 26m
Multiple Airlines
Deal found 5/29![Multiple Airlines logo]()
$213
This Alaska Airlines deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/127:03 am
MSO
- ONT
1 stop7h 06m
Alaska Airlines
Deal found 5/29![Alaska Airlines logo]()
$231
This Alaska Airlines deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/135:41 pm
MSO
- ONT
1 stop7h 11m
Alaska Airlines
Deal found 6/2![Alaska Airlines logo]()
$256
This CheapOair deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/15:41 pm
MSO
- ONT
1 stop7h 11m
Alaska Airlines
Deal found 6/1![Alaska Airlines logo]()
$258
Find flight deals from Missoula to Ontario
Discover tips and strategies to find the most affordable flight options for your journey from Missoula (MSO) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $311 (Delta) |
One-way from | $156 (Alaska Airlines) |
Popular in | December |
Cheapest in | January |
Average price | $327 |
Cheapflights Fare Finder
Customize your flight search to find flights from Missoula to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 3, 2026.
Use the filters below to find and compare flights from Missoula to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
MissoulaOntario
MSO - ONT
MSOONT
Missoula Johnson-Bell Field
Tue 9/1
7:15 am-2:09 pm
1 stop7h 54m
Ontario
Sat 9/5
7:12 am-1:25 pm
1 stop5h 13m
$354
MissoulaOntario
MSO - ONT
MSOONT
Missoula Johnson-Bell Field
Tue 8/4
5:30 am-8:48 am
1 stop4h 18m
Ontario
Tue 8/11
5:05 pm-12:18 am
1 stop6h 13m
$385
MissoulaOntario
MSO - ONT
MSOONT
Missoula Johnson-Bell Field
Fri 8/21
2:05 pm-11:04 am
1 stop21h 59m
Ontario
Mon 8/24
3:07 pm-10:56 pm
1 stop6h 49m
$392
Quickest round-trip
MissoulaOntario
MSO - ONT
MSOONT
Missoula Johnson-Bell Field
Wed 7/22
5:35 am-8:47 am
1 stop4h 12m
Ontario
Mon 7/27
5:10 pm-12:28 am
1 stop6h 18m
$413
MissoulaOntario
MSO - ONT
MSOONT
Missoula Johnson-Bell Field
Mon 8/31
4:16 pm-11:24 pm
1 stop8h 08m
Ontario
Mon 9/7
7:12 am-10:56 pm
2 stops14h 44m
$427
MissoulaOntario
MSO - ONT
MSOONT
Missoula Johnson-Bell Field
Fri 9/18
4:16 pm-5:18 pm
2 stops26h 02m
Ontario
Mon 9/21
3:14 pm-10:56 pm
1 stop6h 42m
$427
Cheapest one-way
MissoulaOntario
MSO - ONT
MSOONT
Missoula Johnson-Bell Field
Mon 8/31
4:16 pm-11:24 pm
1 stop8h 08m
$156
MissoulaOntario
MSO - ONT
MSOONT
Missoula Johnson-Bell Field
Wed 7/15
5:41 pm-11:52 pm
1 stop7h 11m
$166
MissoulaOntario
MSO - ONT
MSOONT
Missoula Johnson-Bell Field
Tue 8/18
5:41 pm-11:53 pm
1 stop7h 12m
$166
Quickest one-way
MissoulaOntario
MSO - ONT
MSOONT
Missoula Johnson-Bell Field
Thu 6/25
7:03 am-1:09 pm
1 stop7h 06m
$166
Showing 1-10 of 16 resultsSorted by cheapest first
Compare providers for flights from Missoula to Ontario
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Missoula to Ontario in June.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Missoula-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Missoula-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Missoula-Ontario flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Missoula-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Missoula-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Missoula to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Missoula with our price prediction graph.
MSO-ONT
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Missoula to Ontario
Prices
More
What is the cheapest month to book a flight from Missoula to Ontario?
Currently, January is the cheapest month in which you can book a flight from Missoula to Ontario (average of $236). Flying from Missoula to Ontario in December is currently the most expensive (average of $454). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Missoula to Ontario?
What’s the top layover airport for flights from Missoula to Ontario?
Share of 1-stop round-trip flights from Missoula to Ontario chosen by Cheapflights users in the past 12 months, using the same layover each way.
Seattle (SEA) – chosen by Cheapflights users on 67% of 1-stop itineraries from Missoula to Ontario on Cheapflights.
What’s the cheapest layover airport for flights from Missoula to Ontario?
Average round-trip fare for 1-stop flights from Missoula to Ontario, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Denver (DEN) is the most affordable 1-stop option, with an average round-trip price of $273.
What’s the fastest layover option from Missoula to Ontario?
Shortest average travel time for 1-stop one-way flights from Missoula to Ontario, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Denver (DEN) have the shortest average one-way travel time for 1-stop routes: 7h 21m.
Which airport typically offers the quickest layover for flights from Missoula to Ontario?
Average layover duration for 1-stop one-way flights from Missoula to Ontario, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Seattle (SEA) offer the fastest connection on this route, with an average layover time of 2h 48m.
Reviews of airlines servicing Ontario
Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated June 3, 2026.
Read through reviews of airlines operating flights from Missoula to Ontario, such as Alaska Airlines,Delta, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.9
Boarding
8.1
Crew
8.5
Food
7.1
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Overall
7.9
Boarding
8.1
Crew
8.5
Food
7.1
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Overall
7.9
Boarding
8.1
Crew
8.5
Food
7.1
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Overall
7.9
Boarding
8.1
Crew
8.5
Food
7.1
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Related info for your journey
Find useful and relevant information for your journey from Missoula to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Ontario flight routes
Other flight options
Other flights from Missoula
Popular flights
Alternative routes for Missoula to Ontario
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Missoula to Ontario by cabin class
Find flights from Missoula to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on June 3, 2026.
Missoula and Ontario flights
Browse other Missoula and Ontario flight options. Last updated on June 3, 2026.
Other flights from Missoula
Browse through other flights departing from Missoula. Flights are based on user searches made on Cheapflights and were last updated on June 3, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 3 airlines flying from Missoula to Ontario
Discover the top 3 airlines that operate flights from Missoula to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$155 | Average$389 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$205 | Average$370 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$259 | Average$274 | FlexibilityNo cancel fee | On-time69% |