Cheapest return flights from Quebec to Seattle in September from $314

Best time to book flights for Quebec (YQB) to Seattle (SEA) flights at AirHint

AirHint found the following cheapest return flights from Quebec (YQB) to Seattle (SEA) in September 2025 (see full year).

Return flights

16 Sep - 07 Oct WestJet
14 Sep - 22 Sep United
09 Sep - 23 Sep United
09 Sep - 17 Sep United
09 Sep - 03 Oct WestJet
10 Sep - 24 Sep United
03 Sep - 09 Sep United
10 Sep - 27 Sep United
04 Sep - 18 Sep Air Canada
10 Sep - 01 Oct Air Canada
16 Sep - 09 Oct Air Canada
17 Sep - 08 Oct Air Canada
10 Sep - 03 Oct Air Canada
10 Sep - 08 Oct Air Canada
09 Sep - 25 Sep Air Canada

Also check the deals for one-way flights from Quebec to Seattle in September.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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