Cheap flights from Seattle to Irvine

View AU$137 flight on Wed, 13 Aug. 2025Opens in a new window

Popular airlines from Seattle to Irvine

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Cheap Flights from Seattle (SEA) to Irvine (QLA)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, 20 Aug. - Sat, 30 Aug.
SEA
Seattle
ONT
Ontario
AU$211 Return, found 5 days ago
AU$211
Return
found 5 days ago
Select Delta flight, departing Wed, 20 Aug. from Seattle to Ontario, returning Sat, 30 Aug., priced at AU$211 found 5 days ago
Hawaiian Airlines
Wed, 20 Aug. - Tue, 2 Sep.
SEA
Seattle
ONT
Ontario
AU$211 Return, found 5 days ago
AU$211
Return
found 5 days ago
Select Hawaiian Airlines flight, departing Wed, 20 Aug. from Seattle to Ontario, returning Tue, 2 Sep., priced at AU$211 found 5 days ago
Frontier Airlines
Wed, 20 Aug. - Thu, 4 Sep.
SEA
Seattle
ONT
Ontario
AU$236 Return, found 6 days ago
AU$236
Return
found 6 days ago
Select Frontier Airlines flight, departing Wed, 20 Aug. from Seattle to Ontario, returning Thu, 4 Sep., priced at AU$236 found 6 days ago
Frontier Airlines
Wed, 20 Aug. - Fri, 5 Sep.
SEA
Seattle
ONT
Ontario
AU$243 Return, found 6 days ago
AU$243
Return
found 6 days ago
Select Frontier Airlines flight, departing Wed, 20 Aug. from Seattle to Ontario, returning Fri, 5 Sep., priced at AU$243 found 6 days ago
Alaska Airlines
Wed, 13 Aug. - Sun, 17 Aug.
SEA
Seattle
ONT
Ontario
AU$272 Return, found 5 days ago
AU$272
Return
found 5 days ago
Select Alaska Airlines flight, departing Wed, 13 Aug. from Seattle to Ontario, returning Sun, 17 Aug., priced at AU$272 found 5 days ago
United
Wed, 13 Aug. - Sun, 17 Aug.
SEA
Seattle
ONT
Ontario
AU$356 Return, found 5 days ago
AU$356
Return
found 5 days ago
Select United flight, departing Wed, 13 Aug. from Seattle to Ontario, returning Sun, 17 Aug., priced at AU$356 found 5 days ago

Find the cheapest month to fly from Seattle (SEA) to Santa Ana (SNA)

September is typically the cheapest month to fly

From AU$122 - AU$285 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.