Cheap Flights To Thornton 2026

Thornton Flights as Low as $216

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Wed, Sep 23 - Tue, Sep 29
IAD
Washington Dulles Intl.
YTZ
Billy Bishop Toronto City
$216
Roundtrip
found 5 days ago
Select Air Canada flight, departing Wed, Sep 23 from Washington Dulles Intl. to Billy Bishop Toronto City, returning Tue, Sep 29, priced at $216 found 5 days ago
Air Canada
Wed, Sep 23 - Tue, Sep 29
IAD
Washington Dulles Intl.
YTZ
Billy Bishop Toronto City
$225
Roundtrip
found 5 days ago
Select Air Canada flight, departing Wed, Sep 23 from Washington Dulles Intl. to Billy Bishop Toronto City, returning Tue, Sep 29, priced at $225 found 5 days ago
United
Tue, Oct 20 - Tue, Oct 20
IAD
Washington Dulles Intl.
YYZ
Pearson Intl.
$229
Roundtrip
found 18 hours ago
Select United flight, departing Tue, Oct 20 from Washington Dulles Intl. to Pearson Intl., returning Tue, Oct 20, priced at $229 found 18 hours ago
United
Wed, Oct 14 - Wed, Oct 14
IAD
Washington Dulles Intl.
YYZ
Pearson Intl.
$231
Roundtrip
found 18 hours ago
Select United flight, departing Wed, Oct 14 from Washington Dulles Intl. to Pearson Intl., returning Wed, Oct 14, priced at $231 found 18 hours ago
Porter Airlines
Air Canada
Fri, Oct 16 - Sat, Oct 17
IAD
Washington Dulles Intl.
YTZ
Billy Bishop Toronto City
$236
Roundtrip
found 18 hours ago
Select Air Canada flight, departing Fri, Oct 16 from Washington Dulles Intl. to Billy Bishop Toronto City, returning Sat, Oct 17, priced at $236 found 18 hours ago
Air Canada
Air Canada
Wed, Sep 23 - Tue, Sep 29
IAD
Washington Dulles Intl.
YKF
Region of Waterloo Intl.
$244
Roundtrip
found 5 days ago
Select Air Canada flight, departing Wed, Sep 23 from Washington Dulles Intl. to Region of Waterloo Intl., returning Tue, Sep 29, priced at $244 found 5 days ago
Air Canada
Wed, Sep 23 - Tue, Sep 29
IAD
Washington Dulles Intl.
YHM
John C. Munro Hamilton Intl.
$244
Roundtrip
found 5 days ago
Select Air Canada flight, departing Wed, Sep 23 from Washington Dulles Intl. to John C. Munro Hamilton Intl., returning Tue, Sep 29, priced at $244 found 5 days ago
United
Delta
Thu, Sep 24 - Tue, Sep 29
IAD
Washington Dulles Intl.
YYZ
Pearson Intl.
$281
Roundtrip
found 5 days ago
Select Delta flight, departing Thu, Sep 24 from Washington Dulles Intl. to Pearson Intl., returning Tue, Sep 29, priced at $281 found 5 days ago
Air Transat
Thu, Sep 24 - Tue, Sep 29
IAD
Washington Dulles Intl.
YTZ
Billy Bishop Toronto City
$289
Roundtrip
found 5 days ago
Select Air Transat flight, departing Thu, Sep 24 from Washington Dulles Intl. to Billy Bishop Toronto City, returning Tue, Sep 29, priced at $289 found 5 days ago
United
WestJet
American Airlines
Air Canada

Cheap Thornton Flights

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