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West Yellowstone

$226+ Cheap flights from Ontario to West Yellowstone (ONT - WYS)

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 8/24. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — WYS
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheap flight deals from Ontario to West Yellowstone

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to West Yellowstone (WYS). 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 August 14, 2025.

Round-trip from

$436
(United Airlines)

One-way from

$226
(United Airlines)
From Ontario to West Yellowstone
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One-way flight from Ontario to West Yellowstone
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Find flight deals from Ontario to West Yellowstone

Cheapest flights from Ontario to West Yellowstone
Explore the most affordable flight options available from Ontario to West Yellowstone. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This Delta deal was found by Cheapflights users on 8/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/219:50 amONT - WYS
1 stop4h 00mDelta
Mon 8/253:25 pmWYS - ONT
2 stops8h 17mDelta
Deal found 8/13$304
This United Airlines deal was found by Cheapflights users on 8/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/215:10 amONT - WYS
1 stop7h 05mUnited Airlines
Mon 8/251:51 pmWYS - ONT
1 stop7h 52mUnited Airlines
Deal found 8/13$379
This United Airlines deal was found by Cheapflights users on 8/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/226:38 pmONT - WYS
1 stop17h 37mUnited Airlines
Wed 9/241:51 pmWYS - ONT
1 stop7h 52mUnited Airlines
Deal found 8/13$436
This United Airlines deal was found by Cheapflights users on 8/12. 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.
Wed 9/106:38 pmONT - WYS
1 stop17h 37mUnited Airlines
Sun 9/141:51 pmWYS - ONT
1 stop7h 52mUnited Airlines
Deal found 8/12$484
This United Airlines deal was found by Cheapflights users on 8/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/296:38 pmONT - WYS
1 stop13h 59mUnited Airlines
Mon 9/11:51 pmWYS - ONT
1 stop7h 52mUnited Airlines
Deal found 8/13$987

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to West Yellowstone 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 August 14, 2025.
Use the filters below to find and compare flights from Ontario to West Yellowstone that are best for you.

Fly from

Ontario

Fly to

West Yellowstone

Route

Depart

Return

Price

OntarioWest Yellowstone

ONT - WYS

ONTWYS

Ontario

Mon 9/22

6:38 pm-1:15 pm

1 stop17h 37m

West Yellowstone

Wed 9/24

1:51 pm-8:43 pm

1 stop7h 52m

$436

OntarioWest Yellowstone

ONT - WYS

ONTWYS

Ontario

Wed 9/10

6:38 pm-1:15 pm

1 stop17h 37m

West Yellowstone

Sun 9/14

1:51 pm-8:43 pm

1 stop7h 52m

$484

OntarioWest Yellowstone

ONT - WYS

ONTWYS

Ontario

Fri 8/29

6:38 pm-9:37 am

1 stop13h 59m

West Yellowstone

Mon 9/1

1:51 pm-8:43 pm

1 stop7h 52m

$987

OntarioWest Yellowstone

ONT - WYS

ONTWYS

Ontario

Sun 8/24

5:10 am-1:15 pm

1 stop7h 05m

$226

OntarioWest Yellowstone

ONT - WYS

ONTWYS

Ontario

Thu 8/28

5:10 am-1:15 pm

1 stop7h 05m

$270

OntarioWest Yellowstone

ONT - WYS

ONTWYS

Ontario

Fri 8/29

5:10 am-9:37 am

1 stop27h 27m

$377

OntarioWest Yellowstone

ONT - WYS

ONTWYS

Ontario

Thu 8/28

6:00 am-2:50 pm

2 stops7h 50m

$570

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Best time to book a flight from Ontario to West Yellowstone

Have a flexible travel schedule? Discover the best time to fly to West Yellowstone from Ontario with our price prediction graph.
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.

Reviews of airlines servicing West Yellowstone

Get insights into the airlines that provide service to West Yellowstone. 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 West Yellowstone. Reviews last updated August 14, 2025.
Peruse reviews from past customers who have flown with United Airlines from Ontario to West Yellowstone 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.
United Airlines
7.4
Good
8,916 reviews

Overall

7.4

Entertainment

7.1

Crew

8.1

Comfort

7.3

Boarding

7.7

Food

6.6

Reviews

1 / 20
10.0
Excellent

Kathy,Jun 2024

RDD - SFO

United has consistently been good. Every now and then there is a crew member that should probably retire, but most of them are excellent.
United Airlines
7.4
Good
8,916 reviews
United Airlines
7.4
Good
8,916 reviews

Overall

7.4

Entertainment

7.1

Crew

8.1

Comfort

7.3

Boarding

7.7

Food

6.6

Reviews

1 / 20
10.0
Excellent

Kathy,Jun 2024

RDD - SFO

United has consistently been good. Every now and then there is a crew member that should probably retire, but most of them are excellent.

Related info for your journey

Find useful and relevant information for your journey from Ontario to West Yellowstone. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What is the cheapest airline to fly from Ontario to West Yellowstone round-trip?

    Our cheapest airline available from Ontario to West Yellowstone is United Airlines. Our recent data shows that you can find tickets from as low as $257 on this airline.

  • Can I find deals for flights from Ontario to West Yellowstone that include hotel bookings?

    Yes. In addition to deals on Ontario to West Yellowstone flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to West Yellowstone?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to West Yellowstone.

  • Can I find deals for business class flights from Ontario to West Yellowstone?

    Yes. Cheapflights offers flight deals from Ontario to West Yellowstone by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near West Yellowstone?

Book flights to West Yellowstone if you plan to visit one of these locations
Island Park

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Top airline flying from Ontario to West Yellowstone

Discover the top airline that operate flights from Ontario to West Yellowstone. 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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$257Average$351FlexibilityNo cancel feeOn-time69%

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