Cheap Flights To St-Antoine-sur-Richelieu 2026

St-Antoine-sur-Richelieu Flights as Low as $557

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.

Delta
Sat, Sep 26 - Thu, Oct 1
STL
Lambert-St. Louis Intl.
YUL
Pierre Elliott Trudeau Intl.
$557
Roundtrip
found 6 days ago
Select Delta flight, departing Sat, Sep 26 from Lambert-St. Louis Intl. to Pierre Elliott Trudeau Intl., returning Thu, Oct 1, priced at $557 found 6 days ago
American Airlines
American Airlines
United
Sat, Sep 26 - Thu, Oct 1
STL
Lambert-St. Louis Intl.
YUL
Pierre Elliott Trudeau Intl.
$624
Roundtrip
found 6 days ago
Select United flight, departing Sat, Sep 26 from Lambert-St. Louis Intl. to Pierre Elliott Trudeau Intl., returning Thu, Oct 1, priced at $624 found 6 days ago
American Airlines
Delta
Sat, Sep 26 - Thu, Oct 1
STL
Lambert-St. Louis Intl.
YUL
Pierre Elliott Trudeau Intl.
$634
Roundtrip
found 6 days ago
Select Delta flight, departing Sat, Sep 26 from Lambert-St. Louis Intl. to Pierre Elliott Trudeau Intl., returning Thu, Oct 1, priced at $634 found 6 days ago
Delta
Sat, Sep 26 - Thu, Oct 1
STL
Lambert-St. Louis Intl.
YUL
Pierre Elliott Trudeau Intl.
$640
Roundtrip
found 6 days ago
Select Delta flight, departing Sat, Sep 26 from Lambert-St. Louis Intl. to Pierre Elliott Trudeau Intl., returning Thu, Oct 1, priced at $640 found 6 days ago
Air Canada
Sat, Sep 26 - Thu, Oct 1
STL
Lambert-St. Louis Intl.
YUL
Pierre Elliott Trudeau Intl.
$647
Roundtrip
found 6 days ago
Select Air Canada flight, departing Sat, Sep 26 from Lambert-St. Louis Intl. to Pierre Elliott Trudeau Intl., returning Thu, Oct 1, priced at $647 found 6 days ago
Delta
Sat, Sep 26 - Thu, Oct 1
STL
Lambert-St. Louis Intl.
YUL
Pierre Elliott Trudeau Intl.
$650
Roundtrip
found 6 days ago
Select Delta flight, departing Sat, Sep 26 from Lambert-St. Louis Intl. to Pierre Elliott Trudeau Intl., returning Thu, Oct 1, priced at $650 found 6 days ago
United
Sat, Sep 26 - Thu, Oct 1
STL
Lambert-St. Louis Intl.
YUL
Pierre Elliott Trudeau Intl.
$650
Roundtrip
found 6 days ago
Select United flight, departing Sat, Sep 26 from Lambert-St. Louis Intl. to Pierre Elliott Trudeau Intl., returning Thu, Oct 1, priced at $650 found 6 days ago
WestJet
Sat, Sep 26 - Thu, Oct 1
STL
Lambert-St. Louis Intl.
YUL
Pierre Elliott Trudeau Intl.
$653
Roundtrip
found 6 days ago
Select WestJet flight, departing Sat, Sep 26 from Lambert-St. Louis Intl. to Pierre Elliott Trudeau Intl., returning Thu, Oct 1, priced at $653 found 6 days ago
American Airlines
Delta
Sat, Sep 26 - Thu, Oct 1
STL
Lambert-St. Louis Intl.
YUL
Pierre Elliott Trudeau Intl.
$731
Roundtrip
found 6 days ago
Select Delta flight, departing Sat, Sep 26 from Lambert-St. Louis Intl. to Pierre Elliott Trudeau Intl., returning Thu, Oct 1, priced at $731 found 6 days ago
United
Sat, Sep 26 - Thu, Oct 1
STL
Lambert-St. Louis Intl.
YUL
Pierre Elliott Trudeau Intl.
$751
Roundtrip
found 6 days ago
Select United flight, departing Sat, Sep 26 from Lambert-St. Louis Intl. to Pierre Elliott Trudeau Intl., returning Thu, Oct 1, priced at $751 found 6 days ago
Air Canada
Sat, Sep 26 - Thu, Oct 1
STL
Lambert-St. Louis Intl.
YUL
Pierre Elliott Trudeau Intl.
$751
Roundtrip
found 6 days ago
Select Air Canada flight, departing Sat, Sep 26 from Lambert-St. Louis Intl. to Pierre Elliott Trudeau Intl., returning Thu, Oct 1, priced at $751 found 6 days ago
WestJet
Sat, Sep 26 - Thu, Oct 1
STL
Lambert-St. Louis Intl.
YUL
Pierre Elliott Trudeau Intl.
$770
Roundtrip
found 6 days ago
Select WestJet flight, departing Sat, Sep 26 from Lambert-St. Louis Intl. to Pierre Elliott Trudeau Intl., returning Thu, Oct 1, priced at $770 found 6 days ago

Cheap St-Antoine-sur-Richelieu Flights

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