Find cheap flights from Toronto Kitchener-Waterloo to Seattle from C$ 291

In the last 3 days, the lowest price for a flight from Toronto Kitchener-Waterloo Airport to Seattle was C$ 213 for a one-way ticket and C$ 394 for a round-trip.

We unfortunately don’t have that data for this specific route.

Star Alliance is the only airline alliance operating flights between Toronto Kitchener-Waterloo and Seattle.

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Toronto Kitchener-Waterloo to Seattle.

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Toronto Kitchener-Waterloo is likely to change within 7 days, so travellers know whether to wait or book now.

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Toronto Kitchener-Waterloo with another airline.

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Toronto Kitchener-Waterloo up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.