Which airports can I use when flying from Ontario to West Yellowstone?

Flights from Ontario to West Yellowstone usually depart from Ontario (ONT) and arrive at West Yellowstone (WYS).

What cabin classes can I book on flights from Ontario to West Yellowstone?

Only Economy Class is available on flights from Ontario to West Yellowstone.

Which airports do connecting flights from Ontario to West Yellowstone pass through?

Connecting flights from Ontario to West Yellowstone most commonly pass through: • Salt Lake City (SLC) - 59% of one-stop connections • Denver Intl (DEN) - 41% of one-stop connections Together, these airports account for 100% of one-stop bookings on this route.

Can I save money by using flexible dates for flights from Ontario to West Yellowstone?

Yes. Being flexible with your travel dates can save you up to 49% on the Ontario to West Yellowstone route. Friday is the cheapest departure day at $293 round-trip on average, while Thursday is the most expensive at $573, a difference of $280. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

How long is a flight from Ontario to West Yellowstone?

There are currently no nonstop flights available from Ontario to West Yellowstone. Flights with 1 layover take between 4h 52m and 7h 22m in total, depending on the connection.

Do I need a passport to fly from Ontario to West Yellowstone?

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

Have flight prices from Ontario to West Yellowstone changed much recently?

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $304 to $1,567. That means the highest observed fare was about 5x higher than the lowest one.

How are flight prices from Ontario to West Yellowstone looking right now?

One-way fares from Ontario to West Yellowstone are currently in line with typical prices for this route. Average one-way fares are about $304.

How much time can I save by choosing a different layover airport from Ontario to West Yellowstone?

Flying via Salt Lake City (SLC) gives the shortest average 1-stop total travel time at 4h 52m, compared with 7h 22m via Denver Intl (DEN).

What is the time difference between Ontario and West Yellowstone?

West Yellowstone is 1 hour ahead of Ontario (Mountain Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

How much should I expect to pay for a Ontario to West Yellowstone flight?

Round-trip flights from Ontario to West Yellowstone range from $388 to $481, with an average of $428 over the past 12 months. Anything below $388 counts as a good deal.

What is the cheapest airline to fly from Ontario to West Yellowstone?

Delta ($304) and United Airlines ($399) are the cheapest airlines to fly round-trip from Ontario to West Yellowstone according to KAYAK data over the last 5 days.

What is the most popular layover airport when flying from Ontario to West Yellowstone?

Salt Lake City (SLC) is the most popular layover for the Ontario to West Yellowstone route. 59% of KAYAK users who booked 1-stop round-trips over the past 3 months connected via SLC.

What is the cheapest layover airport when flying from Ontario to West Yellowstone?

Flights via Salt Lake City (SLC) offer the most affordable fares, with an average round-trip price of $412. Based on KAYAK data over the past 3 months.

When flying from Ontario to West Yellowstone which airport offers the shortest layover?

Salt Lake City (SLC) had the shortest average connection time for Ontario to West Yellowstone layovers at 202 minutes over the past 3 months.

$230 CHEAP FLIGHTS from Ontario to West Yellowstone (ONT - WYS)

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Cheapest round-trip

$304

Typical prices: $388-$481

Delta

Mon 9/17Sat 9/22

ONT - WYS • 1 stop

Cheapest one-way

$230

Typical prices: $308-$308

Delta

Sat 9/15

ONT - WYS • 1 stop

Top layover airports

Salt Lake City (SLC)

Cheapest • Avg $412 (round-trip)

Denver Intl (DEN)

Shortest trip • 7h 22m (one-way)

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Flight Deals

Cheap Flights from Ontario to West Yellowstone (ONT-WYS)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from Ontario to West Yellowstone

Tue, Sep 15 - Tue, Sep 22

6:00 am - 10:47 amONT Ontario-WYS West Yellowstone

3h 47m1 stop Salt Lake City

11:29 am - 10:40 pmWYS West Yellowstone-ONT Ontario

12h 11m2 stops Salt Lake City Seattle/Tacoma Intl

$314Delta

Sat, Oct 3 - Fri, Oct 9

5:00 am - 1:30 pmONT Ontario-WYS West Yellowstone

7h 30m1 stop Denver Intl

2:05 pm - 8:58 pmWYS West Yellowstone-ONT Ontario

7h 53m1 stop Denver Intl

$399United Airlines

Tue, Sep 8 - Fri, Sep 11

6:00 am - 10:47 amONT Ontario-WYS West Yellowstone

3h 47m1 stop Salt Lake City

11:29 am - 10:40 pmWYS West Yellowstone-ONT Ontario

12h 11m2 stops Salt Lake City Seattle/Tacoma Intl

$474Delta

Sat, Oct 3 - Fri, Oct 9

1:52 pm - 1:30 pmONT Ontario-WYS West Yellowstone

22h 38m2 stops San Francisco Denver Intl

2:05 pm - 8:58 pmWYS West Yellowstone-ONT Ontario

7h 53m1 stop Denver Intl

$476United Airlines

Sat, Oct 3 - Fri, Oct 9

5:00 am - 1:30 pmONT Ontario-WYS West Yellowstone

7h 30m1 stop Denver Intl

2:05 pm - 8:58 pmWYS West Yellowstone-ONT Ontario

7h 53m1 stop Denver Intl

$493United Airlines

Sat, Oct 3 - Fri, Oct 9

5:00 am - 1:30 pmONT Ontario-WYS West Yellowstone

7h 30m1 stop Denver Intl

2:05 pm - 8:58 pmWYS West Yellowstone-ONT Ontario

7h 53m1 stop Denver Intl

$508United Airlines

Tue, Sep 8 - Fri, Sep 11

5:00 am - 1:20 pmONT Ontario-WYS West Yellowstone

7h 20m1 stop Denver Intl

6:00 pm - 12:50 pmWYS West Yellowstone-ONT Ontario

19h 50m1 stop Denver Intl

$545United Airlines

Tue, Sep 8 - Fri, Sep 11

5:00 am - 1:20 pmONT Ontario-WYS West Yellowstone

7h 20m1 stop Denver Intl

6:00 pm - 12:12 pmWYS West Yellowstone-ONT Ontario

19h 12m2 stops Denver Intl San Francisco

$555United Airlines

Sat, Oct 3 - Fri, Oct 9

5:00 am - 1:30 pmONT Ontario-WYS West Yellowstone

7h 30m1 stop Denver Intl

2:05 pm - 9:59 pmWYS West Yellowstone-ONT Ontario

32h 54m2 stops Denver Intl Houston George Bush Intcntl

$556United Airlines

Tue, Sep 15 - Wed, Sep 16

6:00 am - 10:47 amONT Ontario-WYS West Yellowstone

3h 47m1 stop Salt Lake City

11:29 am - 4:35 pmWYS West Yellowstone-ONT Ontario

6h 06m1 stop Salt Lake City

$564Delta

Booking Insights

Price, demand and travel trends for Ontario to West Yellowstone flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Ontario to West Yellowstone with more confidence.

Prices

Airlines

Layovers

How much is a round-trip flight from Ontario to West Yellowstone?

Round-trip flights from Ontario to West Yellowstone start at $304. Prices are below average for this route right now, with typical round-trip fares ranging from $388 to $481. The lowest price found in the past 5 days was $304 on Delta.

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Cheapest flight	$230

Flight from Ontario to West Yellowstone

When to book flights from Ontario to West Yellowstone

Are your dates flexible? Find out the best times to travel from Ontario to West Yellowstone based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Which airports can I use when flying from Ontario to West Yellowstone?
Flights from Ontario to West Yellowstone usually depart from Ontario (ONT) and arrive at West Yellowstone (WYS).
What cabin classes can I book on flights from Ontario to West Yellowstone?
Only Economy Class is available on flights from Ontario to West Yellowstone.
Which airports do connecting flights from Ontario to West Yellowstone pass through?
Connecting flights from Ontario to West Yellowstone most commonly pass through:

• Salt Lake City (SLC) - 59% of one-stop connections
• Denver Intl (DEN) - 41% of one-stop connections
Together, these airports account for 100% of one-stop bookings on this route.
Can I save money by using flexible dates for flights from Ontario to West Yellowstone?
Yes. Being flexible with your travel dates can save you up to 49% on the Ontario to West Yellowstone route. Friday is the cheapest departure day at $293 round-trip on average, while Thursday is the most expensive at $573, a difference of $280. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.
How long is a flight from Ontario to West Yellowstone?
There are currently no nonstop flights available from Ontario to West Yellowstone. Flights with 1 layover take between 4h 52m and 7h 22m in total, depending on the connection.
Do I need a passport to fly from Ontario to West Yellowstone?
No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.
Have flight prices from Ontario to West Yellowstone changed much recently?
Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $304 to $1,567. That means the highest observed fare was about 5x higher than the lowest one.
How are flight prices from Ontario to West Yellowstone looking right now?
One-way fares from Ontario to West Yellowstone are currently in line with typical prices for this route. Average one-way fares are about $304.
How much time can I save by choosing a different layover airport from Ontario to West Yellowstone?
Flying via Salt Lake City (SLC) gives the shortest average 1-stop total travel time at 4h 52m, compared with 7h 22m via Denver Intl (DEN).
What is the time difference between Ontario and West Yellowstone?
West Yellowstone is 1 hour ahead of Ontario (Mountain Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.
How much should I expect to pay for a Ontario to West Yellowstone flight?
Round-trip flights from Ontario to West Yellowstone range from $388 to $481, with an average of $428 over the past 12 months. Anything below $388 counts as a good deal.

If your dates can be flexible, aim for a Friday departure instead of Thursday. On this route, Friday flights average $293 - about $280 less than Thursday (49% savings) based on the last 12 months.
If you're arriving late at night and need somewhere to stay, check out these hotels close to West Yellowstone Airport.
- Yellowstone Country Inn
- White Buffalo Hotel
- Best Western Weston Inn

Everything you need to know for your flight from Ontario to West Yellowstone

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Ontario (ONT)

West Yellowstone (WYS)

ONT - WYS

$230 Find Cheap Flights from Ontario to West Yellowstone - Compare and Save

Everything you should know

Cheap Flights from Ontario to West Yellowstone (ONT-WYS)

Recent round-trip flight deals from Ontario to West Yellowstone

Recent one-way flight deals from Ontario to West Yellowstone

Recent last minute flight deals from Ontario to West Yellowstone

Price, demand and travel trends for Ontario to West Yellowstone flights

How much is a round-trip flight from Ontario to West Yellowstone?

What is the cheapest airline to fly from Ontario to West Yellowstone?

What is the most popular layover airport when flying from Ontario to West Yellowstone?

What is the cheapest layover airport when flying from Ontario to West Yellowstone?

When flying from Ontario to West Yellowstone which airport offers the shortest layover?

Key details for Ontario to West Yellowstone flights

Cheapest flight

When to book flights from Ontario to West Yellowstone

Your Ontario to West Yellowstone flight questions, answered

Your guide to booking Ontario to West Yellowstone flights

Everything you need to know for your flight from Ontario to West Yellowstone

Information on your arrival and departure airports

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Complete your trip to West Yellowstone with a hotel stay or car rental

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