Cheap flights from Washington to Niagara-on-the-Lake from CA $147

View CA $147 flight on Mon, Sep. 22, 2025Opens in a new window

Popular airlines from Washington to Niagara-on-the-Lake

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Cheap flights from Washington (WAS) to Niagara-on-the-Lake (YTZ)

Prices were available within the past 7 days and start at CA $147 for one-way flights and CA $337 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Wed, Aug. 27 - Wed, Sep. 3
IAD
Washington
YTZ
Toronto
CA $337 Roundtrip, found 4 hours ago
CA $337
Roundtrip
found 4 hours ago
Select Air Canada flight, departing Wed, Aug. 27 from Washington to Toronto, returning Wed, Sep. 3, priced at CA $337 found 4 hours ago
United
Wed, Oct. 1 - Thu, Oct. 2
IAD
Washington
YYZ
Toronto
CA $342 Roundtrip, found 2 days ago
CA $342
Roundtrip
found 2 days ago
Select United flight, departing Wed, Oct. 1 from Washington to Toronto, returning Thu, Oct. 2, priced at CA $342 found 2 days ago
Air Canada
Sun, Aug. 31 - Wed, Sep. 3
DCA
Washington
YYZ
Toronto
CA $344 Roundtrip, found 8 hours ago
CA $344
Roundtrip
found 8 hours ago
Select Air Canada flight, departing Sun, Aug. 31 from Washington to Toronto, returning Wed, Sep. 3, priced at CA $344 found 8 hours ago
American Airlines
Sun, Aug. 31 - Wed, Sep. 3
DCA
Washington
YYZ
Toronto
CA $344 Roundtrip, found 8 hours ago
CA $344
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Sun, Aug. 31 from Washington to Toronto, returning Wed, Sep. 3, priced at CA $344 found 8 hours ago
Delta
Tue, Sep. 16 - Wed, Sep. 17
DCA
Washington
YYZ
Toronto
CA $356 Roundtrip, found 1 day ago
CA $356
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Sep. 16 from Washington to Toronto, returning Wed, Sep. 17, priced at CA $356 found 1 day ago
Porter Airlines
Fri, Sep. 19 - Sun, Sep. 21
IAD
Washington
YTZ
Toronto
CA $358 Roundtrip, found 1 day ago
CA $358
Roundtrip
found 1 day ago
Select Porter Airlines flight, departing Fri, Sep. 19 from Washington to Toronto, returning Sun, Sep. 21, priced at CA $358 found 1 day ago

Find the cheapest month to fly from Washington (WAS) to Toronto (YYZ)

May is typically the cheapest month to fly

From CA $237 - CA $668 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.