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Yellowstone National Park

$301+ Cheap flights from Ontario (ONT) to Yellowstone National Park

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 6/10. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — WYS
Apr 27 — May 41
Mon 4/27
Mon 5/4
1 adult, Economy
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Cheap flight deals from Ontario to Yellowstone National Park

Cheapest flights from Ontario to Yellowstone National Park
Explore the most affordable flight options available from Ontario to Yellowstone National Park. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2026.

This Delta deal was found by Cheapflights users on 3/27. 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 9/126:00 am
ONT
-
WYS
1 stop3h 41m
Delta
Sun 9/201:09 pm
WYS
-
ONT
1 stop4h 05m
Delta
Deal found 3/27$314
This Delta deal was found by Cheapflights users on 3/27. 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 9/126:00 am
ONT
-
WYS
1 stop3h 41m
Delta
Sat 9/1911:29 am
WYS
-
ONT
2 stops12h 11m
Delta
Deal found 3/27$359
This Delta deal was found by Cheapflights users on 3/27. 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 9/166:00 am
ONT
-
WYS
1 stop5h 21m
Delta
Sat 9/1911:29 am
WYS
-
ONT
1 stop5h 45m
Delta
Deal found 3/27$429
This United Airlines deal was found by Cheapflights users on 3/27. 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 8/155:00 am
ONT
-
WYS
1 stop7h 20m
United Airlines
Tue 8/182:02 pm
WYS
-
ONT
1 stop7h 50m
United Airlines
Deal found 3/27$443
This United Airlines deal was found by Cheapflights users on 3/27. 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 9/85:00 am
ONT
-
WYS
1 stop7h 20m
United Airlines
Thu 9/172:02 pm
WYS
-
ONT
1 stop7h 50m
United Airlines
Deal found 3/27$453
This Delta deal was found by Cheapflights users on 3/27. 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 9/46:00 am
ONT
-
WYS
1 stop5h 21m
Delta
Sun 9/61:09 pm
WYS
-
ONT
1 stop4h 05m
Delta
Deal found 3/27$464
This Delta deal was found by Cheapflights users on 3/27. 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 9/126:00 am
ONT
-
WYS
1 stop3h 41m
Delta
Fri 9/181:09 pm
WYS
-
ONT
2 stops23h 05m
Delta
Deal found 3/27$467
This Delta deal was found by Cheapflights users on 3/27. 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 7/226:00 am
ONT
-
WYS
1 stop5h 27m
Delta
Sat 7/2511:29 am
WYS
-
ONT
1 stop6h 06m
Delta
Deal found 3/27$474
This United Airlines deal was found by Cheapflights users on 3/27. 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 9/25:00 am
ONT
-
WYS
1 stop7h 20m
United Airlines
Wed 9/92:02 pm
WYS
-
ONT
1 stop7h 50m
United Airlines
Deal found 3/27$478
This United Airlines deal was found by Cheapflights users on 3/27. 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 9/95:00 am
ONT
-
WYS
1 stop7h 20m
United Airlines
Thu 9/172:02 pm
WYS
-
ONT
1 stop7h 50m
United Airlines
Deal found 3/27$488
This United Airlines deal was found by Cheapflights users on 3/23. 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 5/65:00 am
ONT
-
WYS
1 stop7h 28m
United Airlines
Sat 5/95:45 pm
WYS
-
ONT
1 stop19h 53m
United Airlines
Deal found 3/23$491
This United Airlines deal was found by Cheapflights users on 3/27. 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 9/85:00 am
ONT
-
WYS
1 stop7h 20m
United Airlines
Wed 9/162:02 pm
WYS
-
ONT
1 stop7h 50m
United Airlines
Deal found 3/27$493

Find flight deals from Ontario to Yellowstone National Park

Keep the following information in mind while searching for Ontario to Yellowstone National Park flight deals. Data was last updated March 28, 2026.

Round-trip from

$314
(Delta)

One-way from

$301
(United Airlines)
From Ontario to Yellowstone National Park
Search Deals
One-way flight from Ontario to Yellowstone National Park
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Yellowstone National Park 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 March 28, 2026.
Use the filters below to find and compare flights from Ontario to Yellowstone National Park that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

OntarioWest Yellowstone

ONT - WYS

ONTWYS

Ontario

Sat 9/5

6:00 am-12:21 pm

1 stop5h 21m

West Yellowstone

Thu 9/10

1:09 pm-4:14 pm

1 stop4h 05m

$429

OntarioWest Yellowstone

ONT - WYS

ONTWYS

Ontario

Sat 9/12

5:00 am-1:20 pm

1 stop7h 20m

West Yellowstone

Mon 9/21

2:02 pm-8:52 pm

1 stop7h 50m

$464

OntarioWest Yellowstone

ONT - WYS

ONTWYS

Ontario

Wed 5/6

5:00 am-1:28 pm

1 stop7h 28m

West Yellowstone

Sat 5/9

5:45 pm-12:38 pm

1 stop19h 53m

$491

OntarioWest Yellowstone

ONT - WYS

ONTWYS

Ontario

Wed 7/22

6:00 am-12:27 pm

1 stop5h 27m

West Yellowstone

Sun 7/26

1:09 pm-4:35 pm

1 stop4h 26m

$524

OntarioWest Yellowstone

ONT - WYS

ONTWYS

Ontario

Thu 6/18

5:00 am-1:32 pm

1 stop7h 32m

West Yellowstone

Sun 6/21

2:19 pm-8:42 pm

1 stop7h 23m

$528

OntarioWest Yellowstone

ONT - WYS

ONTWYS

Ontario

Thu 9/10

6:00 am-12:21 pm

1 stop5h 21m

West Yellowstone

Wed 9/16

1:09 pm-4:14 pm

1 stop4h 05m

$539

OntarioWest Yellowstone

ONT - WYS

ONTWYS

Ontario

Thu 9/3

6:00 am-12:21 pm

1 stop5h 21m

West Yellowstone

Tue 9/8

1:09 pm-4:14 pm

1 stop4h 05m

$539

OntarioWest Yellowstone

ONT - WYS

ONTWYS

Ontario

Mon 9/14

5:00 am-1:20 pm

1 stop7h 20m

West Yellowstone

Sat 9/19

2:02 pm-8:52 pm

1 stop7h 50m

$540

OntarioWest Yellowstone

ONT - WYS

ONTWYS

Ontario

Tue 9/8

5:00 am-1:20 pm

1 stop7h 20m

West Yellowstone

Sat 9/19

2:02 pm-8:52 pm

1 stop7h 50m

$540

OntarioWest Yellowstone

ONT - WYS

ONTWYS

Ontario

Fri 9/18

6:00 am-12:21 pm

1 stop5h 21m

West Yellowstone

Mon 9/21

1:09 pm-10:40 pm

2 stops10h 31m

$549

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 12 resultsSorted by cheapest first
1
2

Best time to book a flight from Ontario to Yellowstone National Park

Have a flexible travel schedule? Discover the best time to fly to Yellowstone National Park 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.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Yellowstone National Park
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Yellowstone National Park

Get insights into the airlines that provide service to Yellowstone National Park. 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 Yellowstone National Park. Reviews last updated March 28, 2026.
Peruse reviews from past customers who have flown with United Airlines from Ontario to Yellowstone National Park to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,499 reviews

Crew

8.1

Entertainment

7.1

Overall

7.4

Boarding

7.7

Comfort

7.3

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
9,499 reviews
United Airlines
7.4
Good
9,499 reviews

Crew

8.1

Entertainment

7.1

Overall

7.4

Boarding

7.7

Comfort

7.3

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 Yellowstone National Park. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Yellowstone National Park?

    If you book a flight to Yellowstone National Park from Ontario, you will be flying from Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario.

  • How long is the flight from Ontario to Yellowstone National Park?

    A quick flight from Ontario to Yellowstone National Park can take about 5h 21m. Delta provides one of the quickest options available for as low as $429. The distance between Ontario and Yellowstone National Park is about 811 mi. This flight may include one or multiple stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Yellowstone National Park 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

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Alternative routes for Ontario to Yellowstone National Park

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Top airline flying from Ontario to Yellowstone National Park

Discover the top airline that operate flights from Ontario to Yellowstone National Park. 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 March 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$230Average$323FlexibilityNo cancel feeOn-time69%

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