ONT - WYS

$604 Find Cheap Flights from Ontario to West Yellowstone - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$604
Typical prices: $388-$481
United Airlines
Fri 10/12Mon 10/15
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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Cheap Flights from Ontario to West Yellowstone (ONT-WYS)

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

Recent round-trip flight deals from Ontario to West Yellowstone

Mon, Oct 12 - Thu, Oct 15
United Airlines Logo
5:00 am - 1:30 pmONT  Ontario-WYS West Yellowstone
7h 30m1 stop Denver Intl
United Airlines Logo
2:05 pm - 8:58 pmWYS  West Yellowstone-ONT Ontario
7h 53m1 stop Denver Intl
$604United Airlines
Mon, Oct 12 - Thu, Oct 15
United Airlines Logo
6:07 am - 1:30 pmONT  Ontario-WYS West Yellowstone
30h 23m2 stops San Francisco Denver Intl
United Airlines Logo
2:05 pm - 8:58 pmWYS  West Yellowstone-ONT Ontario
7h 53m1 stop Denver Intl
$847United Airlines
Mon, Oct 12 - Thu, Oct 15
United Airlines Logo
6:32 pm - 1:30 pmONT  Ontario-WYS West Yellowstone
17h 58m2 stops San Francisco Denver Intl
United Airlines Logo
2:05 pm - 10:51 pmWYS  West Yellowstone-ONT Ontario
9h 46m2 stops Denver Intl San Francisco
$1,207United Airlines
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 with more confidence.

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

Round-trip flights from Ontario to West Yellowstone typically range from $388 to $481. The lowest price found in the past 5 days was $604, on United Airlines.

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Key details for Ontario to West Yellowstone flights

Cheapest flight

$604
Round-trip 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

Your Ontario to West Yellowstone flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • 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.

  • 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.

  • 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.

  • 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 varied from about $604 to $1,207. That means the highest observed fare was about 99% higher than the lowest one.

  • 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).

  • 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

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

    Yes. Flexible dates can save you up to 49% on flights from Ontario to West Yellowstone. 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 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.

Your guide to booking Ontario to West Yellowstone flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Friday departure and avoid flying on Thursday. On this route, Friday flights average $293, about $280 less than Thursday fares (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
    • Best Western Weston Inn
    • White Buffalo Hotel

More options for your flight from Ontario to West Yellowstone

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

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