Cheap flights from Toronto to Herron Island

View AU$236 flight on Wed, 10 Sep. 2025Opens in a new window

Popular airlines from Toronto to Herron Island

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Cheap Flights from Toronto (YTO) to Herron Island (SEA)

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.

Air Canada
Thu, 14 Aug. - Tue, 19 Aug.
YYZ
Toronto
SEA
Seattle
AU$424 Return, found 4 days ago
AU$424
Return
found 4 days ago
Select Air Canada flight, departing Thu, 14 Aug. from Toronto to Seattle, returning Tue, 19 Aug., priced at AU$424 found 4 days ago
Air Canada
Sat, 30 Aug. - Sat, 6 Sep.
YYZ
Toronto
SEA
Seattle
AU$435 Return, found 6 days ago
AU$435
Return
found 6 days ago
Select Air Canada flight, departing Sat, 30 Aug. from Toronto to Seattle, returning Sat, 6 Sep., priced at AU$435 found 6 days ago
Alaska Airlines
Thu, 13 Nov. - Sat, 15 Nov.
YYZ
Toronto
SEA
Seattle
AU$438 Return, found 4 days ago
AU$438
Return
found 4 days ago
Select Alaska Airlines flight, departing Thu, 13 Nov. from Toronto to Seattle, returning Sat, 15 Nov., priced at AU$438 found 4 days ago
Delta
Sat, 30 Aug. - Sat, 6 Sep.
YYZ
Toronto
SEA
Seattle
AU$443 Return, found 6 days ago
AU$443
Return
found 6 days ago
Select Delta flight, departing Sat, 30 Aug. from Toronto to Seattle, returning Sat, 6 Sep., priced at AU$443 found 6 days ago
American Airlines
Thu, 13 Nov. - Sat, 15 Nov.
YYZ
Toronto
SEA
Seattle
AU$447 Return, found 4 days ago
AU$447
Return
found 4 days ago
Select American Airlines flight, departing Thu, 13 Nov. from Toronto to Seattle, returning Sat, 15 Nov., priced at AU$447 found 4 days ago
United
Sun, 31 Aug. - Sun, 7 Sep.
YYZ
Toronto
SEA
Seattle
AU$450 Return, found 5 days ago
AU$450
Return
found 5 days ago
Select United flight, departing Sun, 31 Aug. from Toronto to Seattle, returning Sun, 7 Sep., priced at AU$450 found 5 days ago

Find the cheapest month to fly from Toronto (YTO) to Seattle (SEA)

May is typically the cheapest month to fly

From AU$274 - AU$734 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.