YHM - SEA

C$ 209 Find Cheap Flights from Hamilton to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Hamilton to Seattle departing on 28/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Hamilton to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Hamilton to Seattle, as well as popular online travel agencies
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Flights Deals

Cheap Flights from Hamilton to Seattle (YHM-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Hamilton to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Hamilton to Seattle

Tue, 19 Aug - Wed, 27 Aug
WestJet Logo
6:00 a.m. - 12:58 p.m.YHM-SEA
9h 58m1 stop
WestJet Logo
1:50 p.m. - 12:41 a.m.SEA-YHM
7h 51m1 stop
C$ 373WestJet
Find Deal
Thu, 21 Aug - Tue, 26 Aug
WestJet Logo
6:00 a.m. - 12:58 p.m.YHM-SEA
9h 58m1 stop
WestJet Logo
2:05 p.m. - 12:41 a.m.SEA-YHM
7h 36m1 stop
C$ 374WestJet
Find Deal
Fri, 22 Aug - Thu, 28 Aug
WestJet Logo
6:00 a.m. - 12:58 p.m.YHM-SEA
9h 58m1 stop
WestJet Logo
1:50 p.m. - 12:41 a.m.SEA-YHM
7h 51m1 stop
C$ 389WestJet
Find Deal
Sat, 23 Aug - Thu, 28 Aug
WestJet Logo
6:00 a.m. - 4:16 p.m.YHM-SEA
13h 16m1 stop
WestJet Logo
1:50 p.m. - 12:41 a.m.SEA-YHM
7h 51m1 stop
C$ 413WestJet
Find Deal
Mon, 25 Aug - Thu, 28 Aug
WestJet Logo
6:00 a.m. - 12:58 p.m.YHM-SEA
9h 58m1 stop
WestJet Logo
1:50 p.m. - 12:41 a.m.SEA-YHM
7h 51m1 stop
C$ 414WestJet
Find Deal
Wed, 27 Aug - Wed, 3 Sep
WestJet Logo
6:00 a.m. - 12:58 p.m.YHM-SEA
9h 58m1 stop
WestJet Logo
1:50 p.m. - 12:40 a.m.SEA-YHM
7h 50m1 stop
C$ 420WestJet
Find Deal
Thu, 28 Aug - Sun, 31 Aug
WestJet Logo
6:00 a.m. - 12:58 p.m.YHM-SEA
9h 58m1 stop
WestJet Logo
8:40 a.m. - 12:41 a.m.SEA-YHM
13h 01m1 stop
C$ 422WestJet
Find Deal
Mon, 25 Aug - Sat, 30 Aug
WestJet Logo
6:00 a.m. - 12:58 p.m.YHM-SEA
9h 58m1 stop
WestJet Logo
7:05 a.m. - 12:41 a.m.SEA-YHM
14h 36m1 stop
C$ 425WestJet
Find Deal
Tue, 2 Sep - Fri, 5 Sep
WestJet Logo
6:00 a.m. - 12:59 p.m.YHM-SEA
9h 59m1 stop
WestJet Logo
1:50 p.m. - 12:40 a.m.SEA-YHM
7h 50m1 stop
C$ 435WestJet
Find Deal
Sun, 7 Sep - Fri, 12 Sep
 Logo
2:55 p.m. - 12:59 p.m.YHM-SEA
25h 04m2 stops
 Logo
1:15 p.m. - 11:48 p.m.SEA-YHM
7h 33m1 stop
C$ 538
Find Deal
Booking Insights

KAYAK's insights & trends for Hamilton to Seattle flights

Get data-powered insights and trends into flights from Hamilton to Seattle to help you find the cheapest flights, the best time to fly and much more.

What is the most popular layover airport when flying from Hamilton to Seattle?

Percentage of one-stop round-trip flights from Hamilton to Seattle chosen by KAYAK users via each layover airport in the last 12 months (only includes trips with the same layover airport on both legs).

Calgary (YYC) is the top choice – 86% of KAYAK users who clicked on one-stop flights from Hamilton to Seattle picked an itinerary connecting there.

What is the cheapest layover airport when flying from Hamilton to Seattle?

Average round-trip price for one-stop flights from Hamilton to Seattle clicked by KAYAK users in the last 12 months (only includes trips with the same layover airport on both legs).

Flights via Toronto (YYZ) offer the most affordable fares, with an average round-trip price of C$ 395.

Which layover airport offers the shortest total travel time from Hamilton to Seattle?

Shortest average total travel time for one-stop one-way flights from Hamilton to Seattle via different layover airports, based on KAYAK user data from the last 12 months.

Consider flying via Calgary (YYC) for the shortest journey. The average one-way travel time for flights connecting there is 6h 03m.

Which layover airport has the quickest connection when flying from Hamilton to Seattle?

Average layover duration at different layover airports for one-stop one-way flights from Hamilton to Seattle, based on KAYAK user data from the last 12 months.

If you prefer a quick connection, Toronto (YYZ) often has the shortest layovers from Hamilton to Seattle, with an average of 2h 03m.


Good to know

Low seasonAugust
Cheapest flightC$ 209
Best time to beat the crowds (35% less expensive on average)
Most popular time to fly and prices are also 35% lower on average.
Flight from Hamilton to Seattle

When to book flights from Hamilton to Seattle

Are your dates flexible? Find out the best times to travel from Hamilton to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Hamilton to Seattle

  • What is the cheapest flight from Hamilton to Seattle?

    In the last 3 days, the lowest price for a flight from Hamilton to Seattle was C$ 152 for a one-way ticket and C$ 271 for a round-trip.

  • Which aircraft models fly most regularly from Hamilton to Seattle?

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

  • How does KAYAK find such low prices on flights from Hamilton to 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 Hamilton to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Hamilton to Seattle?

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

  • What is the Hacker Fare option on flights from Hamilton to Seattle?

    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 Hamilton with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Hamilton to Seattle?

    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 Hamilton up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Hamilton to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Hamilton to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Hamilton to Seattle? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.2
WestJetOverall score based on 2975 reviews
7.4Boarding
7.0Comfort
6.2Food
6.1Entertainment
7.9Crew
Airline reviews

Staff were courteous and helpful. The only negative was the flight delays (which are usually unavoidable) and the high baggage price.

10.0 ExcellentAnonymous, Jul 2025YVR - MSP
Read more WestJet reviews

Staff were courteous and helpful. The only negative was the flight delays (which are usually unavoidable) and the high baggage price.

Absolutely terrible, from the customer service to boarding the plane. On the phone, there was some mishaps with getting in my correct date and they did not help me retrieve a refund or any assistance. I’m gonna be reporting to all my followers and family around the region of Los Angeles to New York.

Could not fly out of Canada. Called airlines on Monday, July 14th. Tried to cancel the flight 7 days away, but they said I could not cancel and there would be no refund.

Arrival at Comox from, London,ON 6 hours later... No bueano

Generally good. However. The flight left 30 mins behind schedule with no reason given.

Flight delayed, missed my pick-up had to Uber, plus missed dinner and medication, so sad!

Nothing to like because my inbound flight was cancelled without notification by West Jet or third party, JustFly. I couldn’t take the inbound flight due to cancellation; therefore could not take the outbound flight back.

Not the greatest experience everything was pretty mediocre. My seat was by the washroom in the aisle and was not located well as everyone past each other people were right in my seat and space.

The small prop plane was crowded and the overhead luggage storage is a smaller than on the jets. Other than that, the crew was good, the flight was on time and the landing was smooth.

There was a medical emergency that the crew handled very well. There was no “entertainment” of any sort-no movie/music/whatever. Food was typical of airlines: mediocre.

Flight got delayed for no reason. And Air Canada was doing 3 boardings via the same gate. It was chaotic!

Wonderful airline. All staff were pleasant and helpful. What is sad is that it wasn’t grand gestures just everyday pleasantness and friendliness that are missing from the other airlines I have flown recently.

Friendly efficient crew, but plane had no way to charge phone. That is a near necessity with today’s travel where we carry out travel documents on our phones.

Orlando to Canada, despite being close and an international flight, the plane was not at all comfortable. It felt like the chair was being pushed forward, in addition to not having a TV and having to choose from a tiny glass of drink, for example, water or soda. I couldn't have both. When I asked the flight attendant for an extra glass of water, she looked at me with an ugly face. This is ridiculous. They don't want to give water to passengers. I will never fly with this airline again in my life.

In a nutshell, my bag, the one I have to pay for, because now you can’t even bring a carry on, did not make it. I am still waiting for an update. The fact that not only were have to pay for it, but on top of that we are stuck without getting it, it’s ridiculous..

This was an excellent experience for a very short flight.

No space in overhead bin, one cookie, 2 oz of juice - is not customer service.

Somebody either kayak or Air Canada booked my flight under my preferred name Betty instead of my legal name and I almost was denied boarding my flight

The ground staff was so rude in Toronto airport ...very rude and did not answer simple questions, and made me look like a fool. Very rude ground staff.

My flight got delayed 5 times and then got cancelled eventually, I had to get a hotel and uber and pay for food for an extra night without any plans. It was a horrible experience, instead of Air Canada, I was flying with United .

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

Information on your arrival and departure airports

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