Flights to Southern Illinois from Ottawa - ￥49,300

View ￥49,300 flight on Mon, Nov 17, 2025Opens in a new window

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Cheap Flights from Ottawa to Southern Illinois (YOW-STL)

Prices were available within the past 7 days and start at ￥49,300 for one-way flights and ￥81,502 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Tue, Aug 12 - Sun, Aug 17
YOW
Ottawa
STL
St. Louis
￥81,502 Roundtrip, found 4 days ago
￥81,502
Roundtrip
found 4 days ago
Select Air Canada flight, departing Tue, Aug 12 from Ottawa to St. Louis, returning Sun, Aug 17, priced at ￥81,502 found 4 days ago
Air Canada
Tue, Aug 12 - Sun, Aug 17
YOW
Ottawa
STL
St. Louis
￥83,997 Roundtrip, found 4 days ago
￥83,997
Roundtrip
found 4 days ago
Select Air Canada flight, departing Tue, Aug 12 from Ottawa to St. Louis, returning Sun, Aug 17, priced at ￥83,997 found 4 days ago
United
Tue, Aug 12 - Sun, Aug 17
YOW
Ottawa
STL
St. Louis
￥84,817 Roundtrip, found 4 days ago
￥84,817
Roundtrip
found 4 days ago
Select United flight, departing Tue, Aug 12 from Ottawa to St. Louis, returning Sun, Aug 17, priced at ￥84,817 found 4 days ago
Air Canada
Tue, Aug 12 - Sun, Aug 17
YOW
Ottawa
STL
St. Louis
￥84,977 Roundtrip, found 4 days ago
￥84,977
Roundtrip
found 4 days ago
Select Air Canada flight, departing Tue, Aug 12 from Ottawa to St. Louis, returning Sun, Aug 17, priced at ￥84,977 found 4 days ago
Air Canada
Tue, Aug 12 - Sun, Aug 17
YOW
Ottawa
STL
St. Louis
￥85,002 Roundtrip, found 4 days ago
￥85,002
Roundtrip
found 4 days ago
Select Air Canada flight, departing Tue, Aug 12 from Ottawa to St. Louis, returning Sun, Aug 17, priced at ￥85,002 found 4 days ago
WestJet
Tue, Aug 12 - Sun, Aug 17
YOW
Ottawa
STL
St. Louis
￥116,821 Roundtrip, found 4 days ago
￥116,821
Roundtrip
found 4 days ago
Select WestJet flight, departing Tue, Aug 12 from Ottawa to St. Louis, returning Sun, Aug 17, priced at ￥116,821 found 4 days ago
*Available to Expedia members.