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Flights from Ontario (ONT) to Seattle (SEA) with Star Alliance

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  1. Ontario (ONT) to Seattle (SEA)

    Roundtrip|Economy
    airline logo
    ONT-SEA

    18/05/2024

    SEA-ONT

    25/05/2024

    Sold by

    United Airlines

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

    7 Night(s) Trip
    348USD*
  2. Ontario (ONT) to Seattle (SEA)

    Roundtrip|Economy
    airline logo
    ONT-SEA

    18/05/2024

    SEA-ONT

    25/05/2024

    Sold by

    United Airlines

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

    7 Night(s) Trip
    418USD*
  3. Ontario (ONT) to Seattle (SEA)

    Roundtrip|Economy
    airline logo
    ONT-SEA

    18/05/2024

    SEA-ONT

    25/05/2024

    Sold by

    United Airlines

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

    7 Night(s) Trip
    478USD*
  4. Ontario (ONT) to Seattle (SEA)

    Roundtrip|Economy
    airline logo
    ONT-SEA

    18/05/2024

    SEA-ONT

    25/05/2024

    Sold by

    United Airlines

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

    7 Night(s) Trip
    640USD*
  5. Ontario (ONT) to Seattle (SEA)

    Roundtrip|Economy
    airline logo
    ONT-SEA

    18/05/2024

    SEA-ONT

    25/05/2024

    Sold by

    United Airlines

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

    7 Night(s) Trip
    700USD*
  6. Ontario (ONT) to Seattle (SEA)

    Roundtrip|Economy
    airline logo
    ONT-SEA

    04/07/2024

    SEA-ONT

    07/07/2024

    Sold by

    United Airlines

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

    3 Night(s) Trip
    762USD*
  7. Ontario (ONT) to Seattle (SEA)

    Roundtrip|Economy
    airline logo
    ONT-SEA

    05/07/2024

    SEA-ONT

    07/07/2024

    Sold by

    United Airlines

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

    2 Night(s) Trip
    771USD*
  8. Ontario (ONT) to Seattle (SEA)

    Roundtrip|Economy
    airline logo
    ONT-SEA

    04/07/2024

    SEA-ONT

    07/07/2024

    Sold by

    United Airlines

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

    3 Night(s) Trip
    862USD*
  9. Ontario (ONT) to Seattle (SEA)

    Roundtrip|Economy
    airline logo
    ONT-SEA

    05/07/2024

    SEA-ONT

    07/07/2024

    Sold by

    United Airlines

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

    2 Night(s) Trip
    871USD*
  10. Ontario (ONT) to Seattle (SEA)

    Roundtrip|Economy
    airline logo
    ONT-SEA

    04/07/2024

    SEA-ONT

    07/07/2024

    Sold by

    United Airlines

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

    3 Night(s) Trip
    984USD*
  11. Ontario (ONT) to Seattle (SEA)

    Roundtrip|Economy
    airline logo
    ONT-SEA

    05/07/2024

    SEA-ONT

    07/07/2024

    Sold by

    United Airlines

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

    2 Night(s) Trip
    993USD*
  12. Ontario (ONT) to Seattle (SEA)

    Roundtrip|Economy
    airline logo
    ONT-SEA

    04/07/2024

    SEA-ONT

    07/07/2024

    Sold by

    United Airlines

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

    3 Night(s) Trip
    1,084USD*
  13. Ontario (ONT) to Seattle (SEA)

    Roundtrip|Economy
    airline logo
    ONT-SEA

    05/07/2024

    SEA-ONT

    07/07/2024

    Sold by

    United Airlines

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

    2 Night(s) Trip
    1,093USD*

*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 Seattle

Thursday
light rain
28/03/2024
9°C
28/03/2024
light rain
Friday
few clouds
29/03/2024
13°C
29/03/2024
few clouds
Saturday
broken clouds
30/03/2024
13°C
30/03/2024
broken clouds
Sunday
few clouds
31/03/2024
14°C
31/03/2024
few clouds
Monday
broken clouds
01/04/2024
17°C
01/04/2024
broken clouds
Tuesday
overcast clouds
02/04/2024
16°C
02/04/2024
overcast clouds
Wednesday
light rain
03/04/2024
9°C
03/04/2024
light rain
Powered by: OpenWeatherMap.org

Flight schedules from Ontario to Seattle with Star Alliance member carriers

Please note that the flight schedules of our member carriers are subject to change on short notice. We recommend using our member airlines information page. for the latest flight updates, details on booking flexibility, as well as specific Frequent Flyer Program information.
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MM/DD/YYYY
MM/DD/YYYY
  1. ONT10:40
    4h 37m
    1 Stop
    SEA15:17
    United Airlines

    Los Angeles - Seattle

    United Airlines
  2. ONT06:00
    6h 4m
    1 Stop
    SEA12:04
    United Airlines

    Los Angeles - Seattle

    United Airlines
  3. ONT18:22
    6h 37m
    1 Stop
    SEA00:59
    +1 day/s
    United Airlines

    Los Angeles - Seattle

    United Airlines