Find Seattle - Ontario flights (SEA - ONT)

Fares recently seen on Star Alliance member airline websites. Not all Star Alliance Member Airlines or all fares/options are shown.
    15 Night(s) Trip
    Seattle (SEA) - Ontario (ONT)

    Roundtrip | Economy

    airline logo
    SEA - ONT

    Jun 05, 2018

    ONT - SEA

    Jun 20, 2018

    Sold by

    United Airlines

    Please note possible operating carriers. Additional baggage fees may apply.

    USD 204*
    15 Night(s) Trip
    Seattle (SEA) - Ontario (ONT)

    Roundtrip | Economy

    airline logo
    SEA - ONT

    Jun 12, 2018

    ONT - SEA

    Jun 27, 2018

    Sold by

    United Airlines

    Please note possible operating carriers. Additional baggage fees may apply.

    USD 204*
    15 Night(s) Trip
    Seattle (SEA) - Ontario (ONT)

    Roundtrip | Economy

    airline logo
    SEA - ONT

    Jun 19, 2018

    ONT - SEA

    Jul 04, 2018

    Sold by

    United Airlines

    Please note possible operating carriers. Additional baggage fees may apply.

    USD 204*
    15 Night(s) Trip
    Seattle (SEA) - Ontario (ONT)

    Roundtrip | Economy

    airline logo
    SEA - ONT

    Jul 03, 2018

    ONT - SEA

    Jul 18, 2018

    Sold by

    United Airlines

    Please note possible operating carriers. Additional baggage fees may apply.

    USD 204*
    3 Night(s) Trip
    Seattle (SEA) - Ontario (ONT)

    Roundtrip | Economy

    airline logo
    SEA - ONT

    Jul 14, 2018

    ONT - SEA

    Jul 17, 2018

    Sold by

    United Airlines

    Please note possible operating carriers. Additional baggage fees may apply.

    USD 204*
    3 Night(s) Trip
    Seattle (SEA) - Ontario (ONT)

    Roundtrip | Economy

    airline logo
    SEA - ONT

    Jun 13, 2018

    ONT - SEA

    Jun 16, 2018

    Sold by

    United Airlines

    Please note possible operating carriers. Additional baggage fees may apply.

    USD 204*
    4 Night(s) Trip
    Seattle (SEA) - Ontario (ONT)

    Roundtrip | Economy

    airline logo
    SEA - ONT

    Jun 05, 2018

    ONT - SEA

    Jun 09, 2018

    Sold by

    United Airlines

    Please note possible operating carriers. Additional baggage fees may apply.

    USD 204*
    13 Night(s) Trip
    Seattle (SEA) - Ontario (ONT)

    Roundtrip | Economy

    airline logo
    SEA - ONT

    Jun 07, 2018

    ONT - SEA

    Jun 20, 2018

    Sold by

    United Airlines

    Please note possible operating carriers. Additional baggage fees may apply.

    USD 205*
    10 Night(s) Trip
    Seattle (SEA) - Ontario (ONT)

    Roundtrip | Economy

    airline logo
    SEA - ONT

    Jun 07, 2018

    ONT - SEA

    Jun 17, 2018

    Sold by

    United Airlines

    Please note possible operating carriers. Additional baggage fees may apply.

    USD 237*
    4 Night(s) Trip
    Seattle (SEA) - Ontario (ONT)

    Roundtrip | Economy

    airline logo
    SEA - ONT

    May 29, 2018

    ONT - SEA

    Jun 02, 2018

    Sold by

    United Airlines

    Please note possible operating carriers. Additional baggage fees may apply.

    USD 239*

*Prices have been offered for round trips within the last 48 hours and might not be currently available. Not all Star Alliance Member Airlines or all fares/options are shown. Additional baggage fees, payment fees and fees for other optional services may apply. When booking, please check for restrictions on refunds, rebooking and baggage allowance that may apply. Prices may vary depending on the route and flights selected. Routings may include stopovers. Terms and conditions apply.

Weather in Ontario

23°C Wednesday May 23, 2018
19°C Thursday May 24, 2018
16°C Friday May 25, 2018
21°C Saturday May 26, 2018
20°C Sunday May 27, 2018
22°C Monday May 28, 2018
24°C Tuesday May 29, 2018
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