Question 1

Which airport typically offers the quickest layover for flights from Hamilton, Ontario to Seattle?

Accepted Answer

Flights via Toronto (YYZ) offer the fastest connection on this route, with an average layover time of 2h 04m.

Question 2

What’s the fastest layover option from Hamilton, Ontario to Seattle?

Accepted Answer

Flights via Calgary (YYC) have the shortest average one-way travel time for 1-stop routes: 7h 07m.

Question 3

What’s the top layover airport for flights from Hamilton, Ontario to Seattle?

Accepted Answer

Calgary (YYC) – chosen by Cheapflights users on 67% of one-stop itineraries from Hamilton, Ontario to Seattle on Cheapflights.

Question 4

What’s the cheapest layover airport for flights from Hamilton, Ontario to Seattle?

Accepted Answer

Calgary (YYC) is the most affordable 1-stop option, with an average round-trip price of C$ 502.

Question 5

What is the cheapest airline to fly from Hamilton, Ontario to Seattle round-trip?

Accepted Answer

Cheapflights users have booked flights from Hamilton, Ontario to Seattle round-trip from C$ 366. WestJet is currently priced 36% below the average price you’ll pay for this route.

Question 6

What is the cheapest month to book a flight from Hamilton, Ontario to Seattle?

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from Hamilton, Ontario to Seattle (average of C$ 262). Flying from Hamilton, Ontario to Seattle in December is currently the most expensive (average of C$ 353). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Question 7

What is the cheapest day to fly from Hamilton, Ontario to Seattle?

Accepted Answer

Travelers seeking maximum savings on their Hamilton, Ontario to Seattle flight should consider departing on Wednesday mornings when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Question 8

E

Accepted Answer

In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 mm per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

Question 9

E

Accepted Answer

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

Question 10

What is the cheapest day to fly round-trip from Hamilton, Ontario to Seattle?

Accepted Answer

Users have found that leaving on a Tuesday can be a cost-effective option. It’s possible to save up to 64% on your flight compared to booking on days when demand is much higher.

Question 11

How far in advance should I book a flight from Hamilton, Ontario to Seattle?

Accepted Answer

Users have found that booking a flight from Hamilton, Ontario to Seattle at least 53 days early can save you up to 40% on average compared to booking a flight this week. If booking 53 days before your flight isn’t an option for you, users have found flights from Hamilton, Ontario to Seattle for as little as C$ 476 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as C$ 476 for flights departing within the next 3 days.

Question 12

What is the cheapest month to fly from Hamilton, Ontario to Seattle?

Accepted Answer

Our data shows that February tends to be the cheapest month to fly to Seattle from Hamilton, Ontario. Users have commonly found prices around C$ 492 for the month, but tickets can be as low as C$ 285. Due to multiple factors, prepare for potentially higher prices in December.

Question 13

What is the cheapest time of day to fly from YHM to SEA?

Accepted Answer

It’s typically best to fly out from Hamilton, Ontario to Seattle at noon. Doing so could potentially save you 20% on the flight price compared to flying in the afternoon, which is usually more expensive.

Question 14

Can I find deals for flights from Hamilton to Seattle that include hotel bookings?

Accepted Answer

Yes. In addition to deals on Hamilton to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

Question 15

How can I find direct flights from Hamilton to Seattle?

Accepted Answer

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Hamilton to Seattle.

Question 16

Can I find deals for business class flights from Hamilton to Seattle?

Accepted Answer

Yes. Cheapflights offers flight deals from Hamilton to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Question 17

How does Cheapflights help users find flights from Hamilton to Seattle?

Accepted Answer

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Hamilton to Seattle. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Question 18

Why should you use Cheapflights to find cheap flight tickets from Hamilton to Seattle?

Accepted Answer

Cheapflights helps you find that perfect flight to Seattle from Hamilton by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Question 19

Can Cheapflights find flights from Hamilton to Seattle with no change fees?

Accepted Answer

Yes! Cheapflights helps users easily find flights from Hamilton to Seattle with no change fees.

Question 20

Can Cheapflights notify me if prices for flights from Hamilton to Seattle become cheaper?

Accepted Answer

Yes! Start tracking prices for Hamilton to Seattle flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

Round-trip from	C$ 366
One-way from	C$ 210
Popular in	July
Cheapest in	August
Average price	C$ 948

Airline	Cheapest	Average	Flexibility	On-time
WestJet	CheapestC$ 255	AverageC$ 407	FlexibilityNo cancel fee	On-time60%	Search WestJet flights
Air Canada	CheapestC$ 386	AverageC$ 680	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights

Cheap flights from Hamilton, ON to Seattle from C$ 210

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 20/8. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Hamilton to Seattle

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Cheapest flights from Hamilton to SeattleExplore the most affordable flight options available from Hamilton to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 July 2025.

Explore the most affordable flight options available from Hamilton to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 July 2025.

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Use the filters below to find and compare flights from Hamilton to Seattle that are best for you.

Best time to book a flight from Hamilton to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Hamilton with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Hamilton to Seattle

What is the cheapest month to book a flight from Hamilton, Ontario to Seattle?

What is the cheapest time of day to fly from YHM to SEA?

Find hourly flight availability from Hamilton to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 29 July 2025.

What’s the top layover airport for flights from Hamilton, Ontario to Seattle?

Share of one-stop round-trip flights from Hamilton, Ontario to Seattle chosen by Cheapflights users in the past 12 months, using the same layover each way.

What’s the cheapest layover airport for flights from Hamilton, Ontario to Seattle?

Average round-trip fare for 1-stop flights from Hamilton, Ontario to Seattle, chosen by Cheapflights users in the past 12 months, with the same layover each way.

What’s the fastest layover option from Hamilton, Ontario to Seattle?

Shortest average travel time for 1-stop one-way flights from Hamilton, Ontario to Seattle, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Which airport typically offers the quickest layover for flights from Hamilton, Ontario to Seattle?

Average layover duration for 1-stop one-way flights from Hamilton, Ontario to Seattle, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Reviews of airlines servicing Seattle

Read through reviews of airlines operating flights from Hamilton to Seattle, such as WestJet. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Hamilton to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What is the cheapest airline to fly from Hamilton, Ontario to Seattle round-trip?

Can I find deals for flights from Hamilton to Seattle that include hotel bookings?

How can I find direct flights from Hamilton to Seattle?

Can I find deals for business class flights from Hamilton to Seattle?

What is the cheapest month to book a flight from Hamilton, Ontario to Seattle?

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Alternative routes for Hamilton to Seattle

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Top 2 airlines flying from Hamilton to Seattle

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How does Cheapflights help users find flights from Hamilton to Seattle?

Why should you use Cheapflights to find cheap flight tickets from Hamilton to Seattle?

Can Cheapflights find flights from Hamilton to Seattle with no change fees?

Can Cheapflights notify me if prices for flights from Hamilton to Seattle become cheaper?

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Cheapest flights from Hamilton to Seattle
Explore the most affordable flight options available from Hamilton to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 July 2025.