$156+ Cheap flights from Ontario to Missoula (ONT - MSO)
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 6/1. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MSO
Jun 12 — Jun 191
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Missoula 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 Ontario to Missoula
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Cheapest flights from Ontario to MissoulaExplore the most affordable flight options available from Ontario to Missoula. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 13, 2026.
Explore the most affordable flight options available from Ontario to Missoula. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 13, 2026.
This Delta deal was found by Cheapflights users on 5/12. 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 6/29:50 am
ONT
- MSO
1 stop6h 34m
Delta
Tue 6/95:31 am
MSO
- ONT
1 stop4h 19m
Delta
Deal found 5/12![Delta logo]()
$311
This Alaska Airlines deal was found by Cheapflights users on 5/8. 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 6/36:00 am
ONT
- MSO
1 stop5h 16m
Alaska Airlines
Thu 6/48:02 pm
MSO
- ONT
1 stop4h 56m
Alaska Airlines
Deal found 5/8![Alaska Airlines logo]()
$330
This Alaska Airlines deal was found by Cheapflights users on 5/12. 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 6/54:03 pm
ONT
- MSO
1 stop6h 56m
Alaska Airlines
Wed 6/107:03 am
MSO
- ONT
1 stop5h 11m
Alaska Airlines
Deal found 5/12![Alaska Airlines logo]()
$355
This Delta deal was found by Cheapflights users on 5/8. 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 8/106:00 am
ONT
- MSO
1 stop5h 33m
Delta
Sat 8/157:13 am
MSO
- ONT
1 stop5h 52m
Delta
Deal found 5/8![Delta logo]()
$361
This Delta deal was found by Cheapflights users on 5/11. 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 8/266:20 am
ONT
- MSO
2 stops10h 27m
Delta
Sun 8/305:30 am
MSO
- ONT
1 stop4h 18m
Delta
Deal found 5/11![Delta logo]()
$366
This Alaska Airlines deal was found by Cheapflights users on 5/11. 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 6/165:26 pm
ONT
- MSO
1 stop5h 30m
Alaska Airlines
Tue 6/235:00 pm
MSO
- ONT
1 stop7h 11m
Alaska Airlines
Deal found 5/11![Alaska Airlines logo]()
$386
This Delta deal was found by Cheapflights users on 5/9. 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 5/319:50 am
ONT
- MSO
1 stop6h 34m
Delta
Fri 6/55:30 am
MSO
- ONT
1 stop4h 23m
Delta
Deal found 5/9![Delta logo]()
$399
This Alaska Airlines deal was found by Cheapflights users on 5/8. 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 5/294:03 pm
ONT
- MSO
1 stop6h 56m
Alaska Airlines
Sun 5/318:02 pm
MSO
- ONT
1 stop4h 56m
Alaska Airlines
Deal found 5/8![Alaska Airlines logo]()
$404
This Alaska Airlines deal was found by Cheapflights users on 5/12. 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 6/165:26 pm
ONT
- MSO
1 stop5h 30m
Alaska Airlines
Thu 6/185:41 pm
MSO
- ONT
1 stop7h 10m
Alaska Airlines
Deal found 5/12![Alaska Airlines logo]()
$411
This Alaska Airlines deal was found by Cheapflights users on 5/9. 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.
Sun 5/317:00 am
ONT
- MSO
1 stop5h 23m
Alaska Airlines
Fri 6/512:56 pm
MSO
- ONT
2 stops23h 14m
Alaska Airlines
Deal found 5/9![Alaska Airlines logo]()
$441
This United Airlines deal was found by Cheapflights users on 5/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/255:00 am
ONT
- MSO
1 stop7h 24m
United Airlines
Fri 5/296:15 am
MSO
- ONT
1 stop7h 32m
United Airlines
Deal found 5/9![United Airlines logo]()
$451
Best flights from Ontario to MissoulaDiscover carefully curated flight deals from Ontario to Missoula that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 13, 2026.
Discover carefully curated flight deals from Ontario to Missoula that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 13, 2026.
This Alaska Airlines deal was found by Cheapflights users on 5/11. 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.
Sat 9/197:10 am
ONT
- MSO
1 stop5h 15m
Alaska Airlines
Mon 9/284:13 pm
MSO
- ONT
1 stop8h 11m
Alaska Airlines
Deal found 5/11![Alaska Airlines logo]()
$386
This Delta deal was found by Cheapflights users on 5/8. 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 6/145:21 pm
ONT
- MSO
1 stop6h 07m
Delta
Fri 6/195:31 am
MSO
- ONT
1 stop4h 19m
Delta
Deal found 5/8![Delta logo]()
$468
This Alaska Airlines deal was found by Cheapflights users on 5/12. 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 6/165:26 pm
ONT
- MSO
1 stop5h 30m
Alaska Airlines
Sat 6/205:41 pm
MSO
- ONT
1 stop7h 10m
Alaska Airlines
Deal found 5/12![Alaska Airlines logo]()
$461
This Alaska Airlines deal was found by Cheapflights users on 5/9. 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 6/37:00 am
ONT
- MSO
2 stops15h 59m
Alaska Airlines
Thu 6/48:02 pm
MSO
- ONT
1 stop4h 56m
Alaska Airlines
Deal found 5/9![Alaska Airlines logo]()
$478
This Alaska Airlines deal was found by Cheapflights users on 5/13. 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.
Sun 6/74:03 pm
ONT
- MSO
1 stop6h 56m
Alaska Airlines
Sun 6/147:03 am
MSO
- ONT
1 stop5h 08m
Alaska Airlines
Deal found 5/13![Alaska Airlines logo]()
$497
This Alaska Airlines deal was found by Cheapflights users on 5/13. 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 6/122:05 pm
ONT
- MSO
1 stop8h 51m
Alaska Airlines
Tue 6/165:00 pm
MSO
- ONT
1 stop7h 11m
Alaska Airlines
Deal found 5/13![Alaska Airlines logo]()
$513
This Alaska Airlines deal was found by Cheapflights users on 5/8. 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 7/212:05 pm
ONT
- MSO
1 stop7h 50m
Alaska Airlines
Wed 7/297:00 am
MSO
- ONT
1 stop7h 09m
Alaska Airlines
Deal found 5/8![Alaska Airlines logo]()
$515
This Alaska Airlines deal was found by Cheapflights users on 5/10. 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 6/295:26 pm
ONT
- MSO
1 stop5h 30m
Alaska Airlines
Mon 7/65:41 pm
MSO
- ONT
1 stop7h 10m
Alaska Airlines
Deal found 5/10![Alaska Airlines logo]()
$515
This Alaska Airlines deal was found by Cheapflights users on 5/9. 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 8/310:54 am
ONT
- MSO
1 stop5h 07m
Alaska Airlines
Sat 8/87:00 am
MSO
- ONT
1 stop5h 14m
Alaska Airlines
Deal found 5/9![Alaska Airlines logo]()
$515
This Alaska Airlines deal was found by Cheapflights users on 5/11. 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 6/235:26 pm
ONT
- MSO
1 stop5h 30m
Alaska Airlines
Fri 6/267:03 am
MSO
- ONT
1 stop5h 11m
Alaska Airlines
Deal found 5/11![Alaska Airlines logo]()
$515
This Alaska Airlines deal was found by Cheapflights users on 5/9. 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 6/97:00 am
ONT
- MSO
2 stops15h 59m
Alaska Airlines
Mon 6/157:59 pm
MSO
- ONT
1 stop16h 15m
Alaska Airlines
Deal found 5/9![Alaska Airlines logo]()
$547
Last-minute flights from Ontario to MissoulaDiscover last-minute flight deals from Ontario to Missoula. Data last updated May 13, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Missoula. Data last updated May 13, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 5/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/255:00 am
ONT
- MSO
1 stop7h 24m
United Airlines
Fri 5/296:15 am
MSO
- ONT
1 stop7h 32m
United Airlines
Deal found 5/9![United Airlines logo]()
$451
This Alaska Airlines deal was found by Cheapflights users on 5/9. 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 5/264:03 pm
ONT
- MSO
1 stop6h 56m
Alaska Airlines
Wed 5/278:02 pm
MSO
- ONT
1 stop4h 56m
Alaska Airlines
Deal found 5/9![Alaska Airlines logo]()
$361
This Alaska Airlines deal was found by Cheapflights users on 5/8. 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 5/294:03 pm
ONT
- MSO
1 stop6h 56m
Alaska Airlines
Sun 5/318:02 pm
MSO
- ONT
1 stop4h 56m
Alaska Airlines
Deal found 5/8![Alaska Airlines logo]()
$404
This Delta deal was found by Cheapflights users on 5/9. 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 5/319:50 am
ONT
- MSO
1 stop6h 34m
Delta
Fri 6/55:30 am
MSO
- ONT
1 stop4h 23m
Delta
Deal found 5/9![Delta logo]()
$399
This Alaska Airlines deal was found by Cheapflights users on 5/9. 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.
Sun 5/317:00 am
ONT
- MSO
1 stop5h 23m
Alaska Airlines
Fri 6/512:56 pm
MSO
- ONT
2 stops23h 14m
Alaska Airlines
Deal found 5/9![Alaska Airlines logo]()
$441
This Delta deal was found by Cheapflights users on 5/12. 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 6/29:50 am
ONT
- MSO
1 stop6h 34m
Delta
Tue 6/95:31 am
MSO
- ONT
1 stop4h 19m
Delta
Deal found 5/12![Delta logo]()
$311
This Alaska Airlines deal was found by Cheapflights users on 5/8. 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 6/36:00 am
ONT
- MSO
1 stop5h 16m
Alaska Airlines
Thu 6/48:02 pm
MSO
- ONT
1 stop4h 56m
Alaska Airlines
Deal found 5/8![Alaska Airlines logo]()
$330
This Alaska Airlines deal was found by Cheapflights users on 5/12. 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 6/54:03 pm
ONT
- MSO
1 stop6h 56m
Alaska Airlines
Wed 6/107:03 am
MSO
- ONT
1 stop5h 11m
Alaska Airlines
Deal found 5/12![Alaska Airlines logo]()
$355
This Alaska Airlines deal was found by Cheapflights users on 5/9. 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 6/94:03 pm
ONT
- MSO
1 stop6h 56m
Alaska Airlines
Mon 6/157:59 pm
MSO
- ONT
1 stop16h 15m
Alaska Airlines
Deal found 5/9![Alaska Airlines logo]()
$459
This Alaska Airlines deal was found by Cheapflights users on 5/11. 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 6/165:26 pm
ONT
- MSO
1 stop5h 30m
Alaska Airlines
Tue 6/235:00 pm
MSO
- ONT
1 stop7h 11m
Alaska Airlines
Deal found 5/11![Alaska Airlines logo]()
$386
This Alaska Airlines deal was found by Cheapflights users on 5/12. 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 6/165:26 pm
ONT
- MSO
1 stop5h 30m
Alaska Airlines
Thu 6/185:41 pm
MSO
- ONT
1 stop7h 10m
Alaska Airlines
Deal found 5/12![Alaska Airlines logo]()
$411
One-way flights from Ontario to MissoulaSearch for one-way flight options from Ontario to Missoula. Find affordable one-way fares based on user searches. Data last updated May 13, 2026.
Search for one-way flight options from Ontario to Missoula. Find affordable one-way fares based on user searches. Data last updated May 13, 2026.
This Delta deal was found by Cheapflights users on 5/10. 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 6/14:57 pm
ONT
- MSO
1 stop6h 25m
Delta
Deal found 5/10![Delta logo]()
$156
This Trip.com deal was found by Cheapflights users on 5/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/274:39 pm
ONT
- MSO
1 stop15h 44m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$178
This Alaska Airlines deal was found by Cheapflights users on 5/9. 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 5/2812:04 pm
ONT
- MSO
1 stop6h 18m
Alaska Airlines
Deal found 5/9![Alaska Airlines logo]()
$181
This Delta deal was found by Cheapflights users on 5/10. 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.
Thu 5/2811:52 am
ONT
- MSO
2 stops11h 30m
Delta
Deal found 5/10![Delta logo]()
$186
This Trip.com deal was found by Cheapflights users on 5/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/54:03 pm
ONT
- MSO
1 stop6h 56m
Alaska Airlines
Deal found 5/11![Alaska Airlines logo]()
$196
This Alaska Airlines deal was found by Cheapflights users on 5/8. 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 5/294:03 pm
ONT
- MSO
1 stop6h 56m
Alaska Airlines
Deal found 5/8![Alaska Airlines logo]()
$200
This Alaska Airlines deal was found by Cheapflights users on 5/9. 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 6/115:26 pm
ONT
- MSO
1 stop5h 30m
Alaska Airlines
Deal found 5/9![Alaska Airlines logo]()
$206
This Alaska Airlines deal was found by Cheapflights users on 5/12. 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 5/216:00 am
ONT
- MSO
1 stop5h 16m
Alaska Airlines
Deal found 5/12![Alaska Airlines logo]()
$241
This Trip.com deal was found by Cheapflights users on 5/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1310:54 am
ONT
- MSO
1 stop5h 07m
Alaska Airlines
Deal found 5/12![Alaska Airlines logo]()
$254
This Alaska Airlines deal was found by Cheapflights users on 5/11. 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 6/86:00 am
ONT
- MSO
1 stop7h 43m
Alaska Airlines
Deal found 5/11![Alaska Airlines logo]()
$255
This Kiwi.com deal was found by Cheapflights users on 5/10. 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.
Tue 7/283:40 pm
ONT
- MSO
3 stops46h 17m
Multiple Airlines
Deal found 5/10![Multiple Airlines logo]()
$271
This United Airlines deal was found by Cheapflights users on 5/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/285:00 am
ONT
- MSO
1 stop7h 19m
United Airlines
Deal found 5/12![United Airlines logo]()
$276
Find flight deals from Ontario to Missoula
Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Missoula (MSO). 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 May 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $311 (Delta) |
One-way from | $156 (Delta) |
Popular in | December |
Cheapest in | October |
Average price | $408 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Missoula 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 May 13, 2026.
Use the filters below to find and compare flights from Ontario to Missoula that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioMissoula
ONT - MSO
ONTMSO
Ontario
Sat 9/19
7:10 am-1:25 pm
1 stop5h 15m
Missoula Johnson-Bell Field
Mon 9/28
4:13 pm-11:24 pm
1 stop8h 11m
$386
OntarioMissoula
ONT - MSO
ONTMSO
Ontario
Tue 6/16
5:26 pm-11:56 pm
1 stop5h 30m
Missoula Johnson-Bell Field
Sat 6/20
5:41 pm-11:51 pm
1 stop7h 10m
$461
OntarioMissoula
ONT - MSO
ONTMSO
Ontario
Sun 6/14
5:21 pm-12:28 am
1 stop6h 07m
Missoula Johnson-Bell Field
Fri 6/19
5:31 am-8:50 am
1 stop4h 19m
$468
OntarioMissoula
ONT - MSO
ONTMSO
Ontario
Wed 6/3
7:00 am-11:59 pm
2 stops15h 59m
Missoula Johnson-Bell Field
Thu 6/4
8:02 pm-11:58 pm
1 stop4h 56m
$478
OntarioMissoula
ONT - MSO
ONTMSO
Ontario
Sun 6/7
4:03 pm-11:59 pm
1 stop6h 56m
Missoula Johnson-Bell Field
Sun 6/14
7:03 am-11:11 am
1 stop5h 08m
$497
OntarioMissoula
ONT - MSO
ONTMSO
Ontario
Fri 6/12
2:05 pm-11:56 pm
1 stop8h 51m
Missoula Johnson-Bell Field
Tue 6/16
5:00 pm-11:11 pm
1 stop7h 11m
$513
OntarioMissoula
ONT - MSO
ONTMSO
Ontario
Tue 7/21
2:05 pm-10:55 pm
1 stop7h 50m
Missoula Johnson-Bell Field
Wed 7/29
7:00 am-1:09 pm
1 stop7h 09m
$515
OntarioMissoula
ONT - MSO
ONTMSO
Ontario
Mon 6/29
5:26 pm-11:56 pm
1 stop5h 30m
Missoula Johnson-Bell Field
Mon 7/6
5:41 pm-11:51 pm
1 stop7h 10m
$515
Quickest round-trip
OntarioMissoula
ONT - MSO
ONTMSO
Ontario
Mon 8/3
10:54 am-5:01 pm
1 stop5h 07m
Missoula Johnson-Bell Field
Sat 8/8
7:00 am-11:14 am
1 stop5h 14m
$515
OntarioMissoula
ONT - MSO
ONTMSO
Ontario
Tue 6/23
5:26 pm-11:56 pm
1 stop5h 30m
Missoula Johnson-Bell Field
Fri 6/26
7:03 am-11:14 am
1 stop5h 11m
$515
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from Ontario to Missoula
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 Ontario to Missoula in May.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Ontario-Missoula flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Missoula flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Missoula flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Ontario-Missoula 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 Ontario-Missoula 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 Ontario to Missoula
Have a flexible travel schedule? Discover the best time to fly to Missoula from Ontario with our price prediction graph.
ONT-MSO
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 Ontario to Missoula
What is the cheapest month to book a flight from Ontario to Missoula?
Currently, October is the cheapest month in which you can book a flight from Ontario to Missoula (average of $275). Flying from Ontario to Missoula in December is currently the most expensive (average of $563). 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 Ontario to Missoula?
Reviews of airlines servicing Missoula
Get insights into the airlines that provide service to Missoula. 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 Missoula. Reviews last updated May 13, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines and Delta from Ontario to Missoula to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.8
Food
7.0
Overall
7.9
Crew
8.5
Boarding
8.1
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Comfort
7.8
Food
7.0
Overall
7.9
Crew
8.5
Boarding
8.1
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Comfort
7.8
Food
7.0
Overall
7.9
Crew
8.5
Boarding
8.1
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Related info for your journey
Find useful and relevant information for your journey from Ontario to Missoula. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Ontario to Missoula
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Complete your trip
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Search flights from Ontario to Missoula by cabin class
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Other flights to Missoula
Explore flights to Missoula departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on May 13, 2026.
Ontario and Missoula flights
Browse other Ontario and Missoula flight options. Last updated on May 13, 2026.
Other flights from Ontario
Browse through other flights departing from Ontario. Flights are based on user searches made on Cheapflights and were last updated on May 13, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 2 airlines flying from Ontario to Missoula
Discover the top 2 airlines that operate flights from Ontario to Missoula. 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 May 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$182 | Average$408 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$240 | Average$364 | FlexibilityNo cancel fee | On-timeN/A |