ONT - WYS

$493 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
$493
Typical prices: $388-$481
United Airlines
Mon 10/8Sun 10/14
ONT - WYS • 1 stop
Cheapest one-way
$667
Typical prices: $308-$308
United Airlines
Sun 9/23
ONT - WYS • 2 stops
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

Thu, Oct 8 - Wed, Oct 14
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
$493United Airlines
Sat, Oct 3 - Fri, Oct 9
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
$528United Airlines
Sat, Oct 3 - Fri, Oct 9
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
$538United Airlines
Mon, Oct 5 - Fri, Oct 9
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
$544United Airlines
Sat, Oct 3 - Fri, Oct 9
United Airlines Logo
1:52 pm - 1:30 pmONT  Ontario-WYS West Yellowstone
22h 38m2 stops San Francisco Denver Intl
United Airlines Logo
2:05 pm - 8:58 pmWYS  West Yellowstone-ONT Ontario
7h 53m1 stop Denver Intl
$595United Airlines
Thu, Oct 8 - Wed, Oct 14
United Airlines Logo
4:03 pm - 1:30 pmONT  Ontario-WYS West Yellowstone
20h 27m2 stops San Francisco Denver Intl
United Airlines Logo
2:05 pm - 8:58 pmWYS  West Yellowstone-ONT Ontario
7h 53m1 stop Denver Intl
$595United Airlines
Sat, Oct 3 - Fri, Oct 9
United Airlines Logo
5:00 am - 1:30 pmONT  Ontario-WYS West Yellowstone
7h 30m1 stop Denver Intl
United Airlines Logo
2:05 pm - 9:59 pmWYS  West Yellowstone-ONT Ontario
32h 54m2 stops Denver Intl Houston George Bush Intcntl
$602United 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 from Ontario to West Yellowstone with more confidence.

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

Round-trip flights from Ontario to West Yellowstone start at $493. Prices are above 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 $493 on United Airlines.

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Key details for Ontario to West Yellowstone flights

Cheapest flight

$493
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 route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • 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?

    Two cabin classes are available on flights from Ontario to West Yellowstone:

    • Economy Class
    • First Class

  • 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 varied from about $493 to $979. That means the highest observed fare was about 98% 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 higher than usual. Average one-way flight prices are about $667, which is 116% above the typical average for this route.

  • 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.

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 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
    - Best Western Weston Inn
    - White Buffalo Hotel

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

Information on your arrival and departure airports

Ontario (ONT)
West Yellowstone (WYS)