Cheap flights from St. Louis to Niagara-on-the-Lake

View AU$319 flight on Thu, 9 Oct. 2025Opens in a new window

Popular airlines from St. Louis to Niagara-on-the-Lake

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Cheap Flights from St. Louis (STL) to Niagara-on-the-Lake (YTZ)

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.

American Airlines
Thu, 9 Oct. - Tue, 14 Oct.
STL
St. Louis
YYZ
Toronto
AU$613 Return, found 4 days ago
AU$613
Return
found 4 days ago
Select American Airlines flight, departing Thu, 9 Oct. from St. Louis to Toronto, returning Tue, 14 Oct., priced at AU$613 found 4 days ago
Air Canada
Thu, 9 Oct. - Tue, 14 Oct.
STL
St. Louis
YYZ
Toronto
AU$668 Return, found 4 days ago
AU$668
Return
found 4 days ago
Select Air Canada flight, departing Thu, 9 Oct. from St. Louis to Toronto, returning Tue, 14 Oct., priced at AU$668 found 4 days ago
American Airlines
Thu, 9 Oct. - Tue, 14 Oct.
STL
St. Louis
YYZ
Toronto
AU$680 Return, found 4 days ago
AU$680
Return
found 4 days ago
Select American Airlines flight, departing Thu, 9 Oct. from St. Louis to Toronto, returning Tue, 14 Oct., priced at AU$680 found 4 days ago
Delta
Thu, 9 Oct. - Tue, 14 Oct.
STL
St. Louis
YYZ
Toronto
AU$722 Return, found 4 days ago
AU$722
Return
found 4 days ago
Select Delta flight, departing Thu, 9 Oct. from St. Louis to Toronto, returning Tue, 14 Oct., priced at AU$722 found 4 days ago
United
Thu, 9 Oct. - Tue, 14 Oct.
STL
St. Louis
YYZ
Toronto
AU$759 Return, found 4 days ago
AU$759
Return
found 4 days ago
Select United flight, departing Thu, 9 Oct. from St. Louis to Toronto, returning Tue, 14 Oct., priced at AU$759 found 4 days ago
WestJet
Thu, 9 Oct. - Tue, 14 Oct.
STL
St. Louis
YYZ
Toronto
AU$789 Return, found 4 days ago
AU$789
Return
found 4 days ago
Select WestJet flight, departing Thu, 9 Oct. from St. Louis to Toronto, returning Tue, 14 Oct., priced at AU$789 found 4 days ago

Find the cheapest month to fly from St. Louis (STL) to Toronto (YYZ)

June is typically the cheapest month to fly

From AU$542 - AU$897 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.