$151+ 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 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
MSO — ONT
Jun 6 — Jun 131
Round-trip
1 adult, Economy
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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
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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 May 7, 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 May 7, 2026.
This Delta deal was found by Cheapflights users on 5/3. 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 5/255:30 am
MSO
- ONT
1 stop4h 23m
Delta
Wed 5/279:50 am
ONT
- MSO
1 stop6h 34m
Delta
Deal found 5/3![Delta logo]()
$301
This Alaska Airlines deal was found by Cheapflights users on 5/3. 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 5/288:02 pm
MSO
- ONT
1 stop4h 56m
Alaska Airlines
Thu 6/44:03 pm
ONT
- MSO
1 stop6h 56m
Alaska Airlines
Deal found 5/3![Alaska Airlines logo]()
$317
This Delta deal was found by Cheapflights users on 5/3. 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.
Sat 5/301:14 pm
MSO
- ONT
1 stop4h 03m
Delta
Mon 6/14:57 pm
ONT
- MSO
1 stop6h 25m
Delta
Deal found 5/3![Delta logo]()
$325
This Delta deal was found by Cheapflights users on 5/3. 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.
Sat 5/301:14 pm
MSO
- ONT
1 stop4h 03m
Delta
Tue 6/211:52 am
ONT
- MSO
2 stops11h 30m
Delta
Deal found 5/3![Delta logo]()
$330
This Delta deal was found by Cheapflights users on 5/3. 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 5/286:05 pm
MSO
- ONT
1 stop6h 29m
Delta
Thu 6/411:52 am
ONT
- MSO
2 stops11h 30m
Delta
Deal found 5/3![Delta logo]()
$335
This Delta deal was found by Cheapflights users on 5/5. 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 5/285:30 am
MSO
- ONT
1 stop4h 23m
Delta
Sun 5/314:57 pm
ONT
- MSO
1 stop6h 25m
Delta
Deal found 5/5![Delta logo]()
$350
This Delta deal was found by Cheapflights users on 5/5. 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 7/26:29 pm
MSO
- ONT
1 stop6h 20m
Delta
Sat 7/115:10 pm
ONT
- MSO
1 stop5h 02m
Delta
Deal found 5/5![Delta logo]()
$351
This Delta deal was found by Cheapflights users on 5/3. 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 5/295:30 am
MSO
- ONT
1 stop4h 23m
Delta
Tue 6/21:35 pm
ONT
- MSO
2 stops9h 47m
Delta
Deal found 5/3![Delta logo]()
$355
This Delta deal was found by Cheapflights users on 5/3. 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 5/255:30 am
MSO
- ONT
1 stop4h 23m
Delta
Mon 6/15:50 pm
ONT
- MSO
2 stops22h 34m
Delta
Deal found 5/3![Delta logo]()
$367
This Delta deal was found by Cheapflights users on 5/3. 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 5/276:05 pm
MSO
- ONT
2 stops19h 30m
Delta
Tue 6/21:35 pm
ONT
- MSO
2 stops9h 47m
Delta
Deal found 5/3![Delta logo]()
$372
This Delta deal was found by Cheapflights users on 5/3. 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 5/296:05 pm
MSO
- ONT
1 stop6h 29m
Delta
Sat 5/306:00 am
ONT
- MSO
1 stop5h 34m
Delta
Deal found 5/3![Delta logo]()
$374
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 May 7, 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 May 7, 2026.
This Delta deal was found by Cheapflights users on 5/4. 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 7/235:35 am
MSO
- ONT
1 stop4h 12m
Delta
Tue 7/285:10 pm
ONT
- MSO
1 stop6h 18m
Delta
Deal found 5/4![Delta logo]()
$301
This CheapOair deal was found by Cheapflights users on 5/6. 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 6/67:45 am
MSO
- ONT
1 stop8h 24m
Alaska Airlines
Thu 6/115:26 pm
ONT
- MSO
1 stop5h 30m
Alaska Airlines
Deal found 5/6![Alaska Airlines logo]()
$389
This Delta deal was found by Cheapflights users on 5/3. 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 6/306:29 pm
MSO
- ONT
1 stop6h 20m
Delta
Thu 7/309:40 am
ONT
- MSO
1 stop7h 05m
Delta
Deal found 5/3![Delta logo]()
$301
This Delta deal was found by Cheapflights users on 5/5. 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 5/285:30 am
MSO
- ONT
1 stop4h 23m
Delta
Sun 5/314:57 pm
ONT
- MSO
1 stop6h 25m
Delta
Deal found 5/5![Delta logo]()
$350
This Alaska Airlines deal was found by Cheapflights users on 5/6. 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 6/175:00 pm
MSO
- ONT
1 stop7h 11m
Alaska Airlines
Wed 6/245:54 pm
ONT
- MSO
1 stop5h 02m
Alaska Airlines
Deal found 5/6![Alaska Airlines logo]()
$389
This Delta deal was found by Cheapflights users on 5/5. 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 7/26:29 pm
MSO
- ONT
1 stop6h 20m
Delta
Sat 7/115:10 pm
ONT
- MSO
1 stop5h 02m
Delta
Deal found 5/5![Delta logo]()
$351
This Delta deal was found by Cheapflights users on 5/3. 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 7/36:29 pm
MSO
- ONT
1 stop6h 20m
Delta
Thu 7/309:40 am
ONT
- MSO
1 stop7h 05m
Delta
Deal found 5/3![Delta logo]()
$351
This Delta deal was found by Cheapflights users on 5/6. 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 7/105:35 am
MSO
- ONT
1 stop4h 12m
Delta
Mon 7/205:10 pm
ONT
- MSO
1 stop6h 18m
Delta
Deal found 5/6![Delta logo]()
$351
This Delta deal was found by Cheapflights users on 5/4. 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.
Sat 5/236:05 pm
MSO
- ONT
1 stop5h 40m
Delta
Wed 5/274:57 pm
ONT
- MSO
1 stop6h 25m
Delta
Deal found 5/4![Delta logo]()
$381
This Delta deal was found by Cheapflights users on 5/3. 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 7/36:29 pm
MSO
- ONT
1 stop6h 20m
Delta
Sat 8/15:10 pm
ONT
- MSO
1 stop5h 02m
Delta
Deal found 5/3![Delta logo]()
$401
This Delta deal was found by Cheapflights users on 5/3. 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 7/16:29 pm
MSO
- ONT
1 stop6h 20m
Delta
Wed 7/295:10 pm
ONT
- MSO
1 stop6h 18m
Delta
Deal found 5/3![Delta logo]()
$408
This Delta deal was found by Cheapflights users on 5/3. 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 7/26:29 pm
MSO
- ONT
1 stop6h 20m
Delta
Wed 7/295:10 pm
ONT
- MSO
1 stop6h 18m
Delta
Deal found 5/3![Delta logo]()
$408
Last-minute flights from Missoula to OntarioDiscover last-minute flight deals from Missoula to Ontario. Data last updated May 7, 2026 and is based on user searches.
Discover last-minute flight deals from Missoula to Ontario. Data last updated May 7, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 5/3. 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 5/255:30 am
MSO
- ONT
1 stop4h 23m
Delta
Wed 5/279:50 am
ONT
- MSO
1 stop6h 34m
Delta
Deal found 5/3![Delta logo]()
$301
This Delta deal was found by Cheapflights users on 5/3. 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 5/255:30 am
MSO
- ONT
1 stop4h 23m
Delta
Mon 6/15:50 pm
ONT
- MSO
2 stops22h 34m
Delta
Deal found 5/3![Delta logo]()
$367
This Delta deal was found by Cheapflights users on 5/3. 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 5/276:05 pm
MSO
- ONT
2 stops19h 30m
Delta
Tue 6/21:35 pm
ONT
- MSO
2 stops9h 47m
Delta
Deal found 5/3![Delta logo]()
$372
This Alaska Airlines deal was found by Cheapflights users on 5/3. 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 5/288:02 pm
MSO
- ONT
1 stop4h 56m
Alaska Airlines
Thu 6/44:03 pm
ONT
- MSO
1 stop6h 56m
Alaska Airlines
Deal found 5/3![Alaska Airlines logo]()
$317
This Delta deal was found by Cheapflights users on 5/3. 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 5/286:05 pm
MSO
- ONT
1 stop6h 29m
Delta
Thu 6/411:52 am
ONT
- MSO
2 stops11h 30m
Delta
Deal found 5/3![Delta logo]()
$335
This Delta deal was found by Cheapflights users on 5/5. 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 5/285:30 am
MSO
- ONT
1 stop4h 23m
Delta
Sun 5/314:57 pm
ONT
- MSO
1 stop6h 25m
Delta
Deal found 5/5![Delta logo]()
$350
This Delta deal was found by Cheapflights users on 5/3. 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 5/295:30 am
MSO
- ONT
1 stop4h 23m
Delta
Tue 6/21:35 pm
ONT
- MSO
2 stops9h 47m
Delta
Deal found 5/3![Delta logo]()
$355
This Delta deal was found by Cheapflights users on 5/3. 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 5/296:05 pm
MSO
- ONT
1 stop6h 29m
Delta
Sat 5/306:00 am
ONT
- MSO
1 stop5h 34m
Delta
Deal found 5/3![Delta logo]()
$374
This Delta deal was found by Cheapflights users on 5/3. 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.
Sat 5/301:14 pm
MSO
- ONT
1 stop4h 03m
Delta
Mon 6/14:57 pm
ONT
- MSO
1 stop6h 25m
Delta
Deal found 5/3![Delta logo]()
$325
This Delta deal was found by Cheapflights users on 5/3. 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.
Sat 5/301:14 pm
MSO
- ONT
1 stop4h 03m
Delta
Tue 6/211:52 am
ONT
- MSO
2 stops11h 30m
Delta
Deal found 5/3![Delta logo]()
$330
This Delta deal was found by Cheapflights users on 5/3. 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 6/306:29 pm
MSO
- ONT
1 stop6h 20m
Delta
Fri 7/315:10 pm
ONT
- MSO
1 stop6h 18m
Delta
Deal found 5/3![Delta logo]()
$351
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 May 7, 2026.
Search for one-way flight options from Missoula to Ontario. Find affordable one-way fares based on user searches. Data last updated May 7, 2026.
This Delta deal was found by Cheapflights users on 5/2. 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.
Wed 9/306:10 pm
MSO
- ONT
1 stop6h 34m
Delta
Deal found 5/2![Delta logo]()
$151
This Delta deal was found by Cheapflights users on 5/6. 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 7/26:29 pm
MSO
- ONT
1 stop6h 20m
Delta
Deal found 5/6![Delta logo]()
$156
This Alaska Airlines deal was found by Cheapflights users on 5/6. 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 6/307:03 am
MSO
- ONT
1 stop5h 11m
Alaska Airlines
Deal found 5/6![Alaska Airlines logo]()
$180
This CheapOair deal was found by Cheapflights users on 5/6. 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.
Thu 7/27:03 am
MSO
- ONT
1 stop7h 06m
Alaska Airlines
Deal found 5/6![Alaska Airlines logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 5/3. 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 7/510:24 am
MSO
- ONT
1 stop5h 43m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$184
This Delta deal was found by Cheapflights users on 5/2. 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 10/212:50 pm
MSO
- ONT
1 stop4h 24m
Delta
Deal found 5/2![Delta logo]()
$201
This Delta deal was found by Cheapflights users on 5/6. 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 7/105:35 am
MSO
- ONT
1 stop4h 12m
Delta
Deal found 5/6![Delta logo]()
$206
This CheapOair deal was found by Cheapflights users on 5/5. 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.
Tue 7/285:41 pm
MSO
- ONT
1 stop7h 11m
Alaska Airlines
Deal found 5/5![Alaska Airlines logo]()
$209
This Alaska Airlines deal was found by Cheapflights users on 5/6. 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 6/297:03 am
MSO
- ONT
1 stop5h 11m
Alaska Airlines
Deal found 5/6![Alaska Airlines logo]()
$210
This United Airlines deal was found by Cheapflights users on 5/4. 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.
Sat 6/64:19 pm
MSO
- ONT
1 stop7h 31m
United Airlines
Deal found 5/4![United Airlines logo]()
$215
This Kiwi.com deal was found by Cheapflights users on 5/5. 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.
Thu 6/2510:25 am
MSO
- ONT
2 stops25h 48m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$216
This Kiwi.com deal was found by Cheapflights users on 5/4. 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.
Mon 5/252:46 pm
MSO
- ONT
2 stops18h 18m
Multiple Airlines
Deal found 5/4![Multiple Airlines logo]()
$224
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 May 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $301 (Delta) |
One-way from | $151 (Delta) |
Popular in | July |
Cheapest in | January |
Average price | $364 |
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 May 7, 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
Quickest round-trip
MissoulaOntario
MSO - ONT
MSOONT
Missoula Johnson-Bell Field
Thu 7/23
5:35 am-8:47 am
1 stop4h 12m
Ontario
Tue 7/28
5:10 pm-12:28 am
1 stop6h 18m
$301
MissoulaOntario
MSO - ONT
MSOONT
Missoula Johnson-Bell Field
Tue 6/30
6:29 pm-11:49 pm
1 stop6h 20m
Ontario
Thu 7/30
9:40 am-5:45 pm
1 stop7h 05m
$301
MissoulaOntario
MSO - ONT
MSOONT
Missoula Johnson-Bell Field
Thu 5/28
5:30 am-8:53 am
1 stop4h 23m
Ontario
Sun 5/31
4:57 pm-12:22 am
1 stop6h 25m
$350
MissoulaOntario
MSO - ONT
MSOONT
Missoula Johnson-Bell Field
Thu 7/2
6:29 pm-11:49 pm
1 stop6h 20m
Ontario
Sat 7/11
5:10 pm-11:12 pm
1 stop5h 02m
$351
MissoulaOntario
MSO - ONT
MSOONT
Missoula Johnson-Bell Field
Fri 7/3
6:29 pm-11:49 pm
1 stop6h 20m
Ontario
Thu 7/30
9:40 am-5:45 pm
1 stop7h 05m
$351
MissoulaOntario
MSO - ONT
MSOONT
Missoula Johnson-Bell Field
Fri 7/10
5:35 am-8:47 am
1 stop4h 12m
Ontario
Mon 7/20
5:10 pm-12:28 am
1 stop6h 18m
$351
MissoulaOntario
MSO - ONT
MSOONT
Missoula Johnson-Bell Field
Sat 5/23
6:05 pm-10:45 pm
1 stop5h 40m
Ontario
Wed 5/27
4:57 pm-12:22 am
1 stop6h 25m
$381
MissoulaOntario
MSO - ONT
MSOONT
Missoula Johnson-Bell Field
Sat 6/6
7:45 am-3:09 pm
1 stop8h 24m
Ontario
Thu 6/11
5:26 pm-11:56 pm
1 stop5h 30m
$389
MissoulaOntario
MSO - ONT
MSOONT
Missoula Johnson-Bell Field
Wed 6/17
5:00 pm-11:11 pm
1 stop7h 11m
Ontario
Wed 6/24
5:54 pm-11:56 pm
1 stop5h 02m
$389
MissoulaOntario
MSO - ONT
MSOONT
Missoula Johnson-Bell Field
Fri 7/3
6:29 pm-11:49 pm
1 stop6h 20m
Ontario
Sat 8/1
5:10 pm-11:12 pm
1 stop5h 02m
$401
Showing 1-10 of 23 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 May.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | 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 July is currently the most expensive (average of $485). 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.
Denver (DEN) – 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 Denver (DEN) offer the fastest connection on this route, with an average layover time of 2h 52m.
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 May 7, 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.
Boarding
8.1
Comfort
7.8
Food
7.1
Crew
8.5
Overall
7.9
Entertainment
7.0
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Boarding
8.1
Comfort
7.8
Food
7.1
Crew
8.5
Overall
7.9
Entertainment
7.0
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Boarding
8.1
Comfort
7.8
Food
7.1
Crew
8.5
Overall
7.9
Entertainment
7.0
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Boarding
8.1
Comfort
7.8
Food
7.1
Crew
8.5
Overall
7.9
Entertainment
7.0
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.
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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 May 7, 2026.
Missoula and Ontario flights
Browse other Missoula and Ontario flight options. Last updated on May 7, 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 May 7, 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 May 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$160 | Average$392 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$259 | Average$274 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$276 | Average$406 | FlexibilityNo cancel fee | On-time75% |