Planning a flight from Seattle to Hamilton International?

Flight prices from Seattle to Hamilton, Ontario change depending on demand and time of booking.

Choose a date to explore the best fares now.

Many users find better fares by booking several weeks in advance. In fact, for many routes, booking early is one of the best ways to save.

Which airports serve Seattle and Hamilton, Ontario?

When planning a trip of about 3306 km, it's a good idea to check flights from surrounding airports too.

• Airports in Seattle: Seattle is connected to 2 airports - Boeing Field, Lake Union.
• Airports in Hamilton, Ontario: Hamilton, Ontario offers flights from 4 airports - John C. Munro, Kitchener Lake, Lester B. Pearson, Toronto Island Airport.

The closest airport isn’t always the cheapest — it’s worth checking the alternatives too. In some cities, smaller airports offer lower fares than the main ones.

Adjust your flight filters for Seattle – Hamilton International

Jetcost gives you tools to search smarter. Pick your ideal price range, airline, departure time, and flight type — then compare offers from the best travel agencies and carriers.

Other popular destinations

Planning a trip to Canada? These cities are popular too: Calgary, Montreal, Quebec, Toronto, Vancouver.

Sorting options let you see the most affordable flights first. Some results may include extra fees shown only at checkout — always read carefully to see what’s included.