Find Ontario - Seattle flights (ONT - SEA)

Compare flight deals from Ontario to Seattle (ONT - SEA)

Fares recently seen on Star Alliance member airline websites. Not all Star Alliance Member Airlines or all fares/options are shown.
ONT Ontario International Airport, United States
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SEA Seattle-Tacoma International Airport, United States
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4 Night(s) Trip
Ontario (ONT) - Seattle (SEA)

Roundtrip | Economy

airline logo
ONT - SEA

Feb 08, 2018

SEA - ONT

Feb 12, 2018

Sold by

United Airlines

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

CAD 188*
5 Night(s) Trip
Ontario (ONT) - Seattle (SEA)

Roundtrip | Economy

airline logo
ONT - SEA

Apr 19, 2018

SEA - ONT

Apr 24, 2018

Sold by

United Airlines

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

USD 150*
2 Night(s) Trip
Ontario (ONT) - Seattle (SEA)

Roundtrip | Economy

airline logo
ONT - SEA

Feb 03, 2018

SEA - ONT

Feb 05, 2018

Sold by

United Airlines

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

USD 150*
3 Night(s) Trip
Ontario (ONT) - Seattle (SEA)

Roundtrip | Economy

airline logo
ONT - SEA

Feb 09, 2018

SEA - ONT

Feb 12, 2018

Sold by

United Airlines

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

USD 150*
4 Night(s) Trip
Ontario (ONT) - Seattle (SEA)

Roundtrip | Economy

airline logo
ONT - SEA

Feb 08, 2018

SEA - ONT

Feb 12, 2018

Sold by

United Airlines

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

USD 150*
2 Night(s) Trip
Ontario (ONT) - Seattle (SEA)

Roundtrip | Economy

airline logo
ONT - SEA

Feb 01, 2018

SEA - ONT

Feb 03, 2018

Sold by

United Airlines

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

USD 150*
2 Night(s) Trip
Ontario (ONT) - Seattle (SEA)

Roundtrip | Economy

airline logo
ONT - SEA

Feb 10, 2018

SEA - ONT

Feb 12, 2018

Sold by

United Airlines

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

USD 150*
26 Night(s) Trip
Ontario (ONT) - Seattle (SEA)

Roundtrip | Economy

airline logo
ONT - SEA

Feb 12, 2018

SEA - ONT

Mar 10, 2018

Sold by

United Airlines

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

USD 150*
7 Night(s) Trip
Ontario (ONT) - Seattle (SEA)

Roundtrip | Economy

airline logo
ONT - SEA

Jan 24, 2018

SEA - ONT

Jan 31, 2018

Sold by

United Airlines

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

USD 183*
2 Night(s) Trip
Ontario (ONT) - Seattle (SEA)

Roundtrip | Economy

airline logo
ONT - SEA

Jan 26, 2018

SEA - ONT

Jan 28, 2018

Sold by

United Airlines

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

USD 183*

*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

6°C Saturday Jan 20, 2018
7°C Sunday Jan 21, 2018
6°C Monday Jan 22, 2018
4°C Tuesday Jan 23, 2018
4°C Wednesday Jan 24, 2018
1°C Thursday Jan 25, 2018
1°C Friday Jan 26, 2018
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