Flights from Ontario to Rock Springs from $ 308*

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Changed bag rules and optional services         Cruise Packages

Featured daily fares for flights from Ontario (ONT) to Rock Springs (RKS)

May 2026
From$ 308*
Viewed: 1 hour ago
RoundTrip|Economy
Jun 2026
From$ 308*
Viewed: 1 hour ago
RoundTrip|Economy
Jul 2026
From$ 308*
Viewed: 1 hour ago
RoundTrip|Economy
cmp-daily-histogram-bars-legend-min-price-aria-label $ 308
cmp-daily-histogram-bars-legend-max-price-aria-label $ 774
Displaying fares for May-2026
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    • Range$ 308-$ 774

    *Prices have been available for round trips within the last 48 hours and may not be currently available. For Economy class, fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply. Schedules are subject to change without notice.

    More United deals on Ontario (ONT) to Rock Springs (RKS) flights

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    More United deals on Ontario (ONT) to Rock Springs (RKS) flights
    From
    To
    Fare Type
    Dates
    Price
    Ontario (ONT)Rock Springs (RKS)Roundtrip
    |
    Economy    		05/30/26 - 06/02/26

    from

    $ 308

    Viewed: 1 hour ago

    Ontario (ONT)Rock Springs (RKS)Roundtrip
    |
    Economy    		08/04/26 - 08/11/26

    from

    $ 308

    Viewed: 1 hour ago

    Ontario (ONT)Rock Springs (RKS)Roundtrip
    |
    Economy    		07/16/26 - 07/20/26

    from

    $ 308

    Viewed: 1 hour ago

    Ontario (ONT)Rock Springs (RKS)Roundtrip
    |
    Economy    		07/21/26 - 07/25/26

    from

    $ 308

    Viewed: 1 hour ago

    Ontario (ONT)Rock Springs (RKS)Roundtrip
    |
    Economy    		07/22/26 - 07/26/26

    from

    $ 308

    Viewed: 1 hour ago

    Ontario (ONT)Rock Springs (RKS)Roundtrip
    |
    Economy    		07/29/26 - 08/02/26

    from

    $ 308

    Viewed: 1 hour ago

    Ontario (ONT)Rock Springs (RKS)Roundtrip
    |
    Economy    		07/22/26 - 07/25/26

    from

    $ 308

    Viewed: 1 hour ago

    Ontario (ONT)Rock Springs (RKS)Roundtrip
    |
    Economy    		07/08/26 - 07/15/26

    from

    $ 308

    Viewed: 1 hour ago

    *Prices have been available for round trips within the last 48 hours and may not be currently available. For Economy class, fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply. Schedules are subject to change without notice.

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