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YHM - SEA

Find cheap flights from Hamilton to Seattle from C$ 341

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 1/7. 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
0 bags
Sun 19/5
Sun 26/5

Search 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
In the last 7 days, travellers have searched 44,553,814 times on KAYAK, and here is why:

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Cheap flight deals 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 and deals for you by selecting your travel dates.
Choose your dates
6:00 a.m. - 12:56 p.m.YHM-SEA
9h 56m1 stop
1:50 p.m. - 12:15 a.m.SEA-YHM
7h 25m1 stop
C$ 552WestJet
Find Deal
Tue, 9 Jul - Tue, 16 Jul
6:00 a.m. - 12:56 p.m.YHM-SEA
9h 56m1 stop
1:50 p.m. - 12:15 a.m.SEA-YHM
7h 25m1 stop
C$ 570WestJet
Find Deal
Tue, 9 Jul - Tue, 16 Jul
6:00 a.m. - 8:21 p.m.YHM-SEA
17h 21m1 stop
1:50 p.m. - 12:15 a.m.SEA-YHM
7h 25m1 stop
C$ 593WestJet
Find Deal
Tue, 20 Aug - Tue, 27 Aug
6:00 a.m. - 8:21 p.m.YHM-SEA
17h 21m1 stop
1:50 p.m. - 12:15 a.m.SEA-YHM
7h 25m1 stop
C$ 594WestJet
Find Deal
Wed, 10 Jul - Fri, 19 Jul
6:00 a.m. - 8:21 p.m.YHM-SEA
17h 21m1 stop
7:00 a.m. - 12:15 a.m.SEA-YHM
14h 15m1 stop
C$ 627WestJet
Find Deal
Thu, 15 Aug - Mon, 19 Aug
6:00 a.m. - 8:21 p.m.YHM-SEA
17h 21m1 stop
7:00 a.m. - 12:15 a.m.SEA-YHM
14h 15m1 stop
C$ 629WestJet
Find Deal
Sat, 10 Aug - Sat, 17 Aug
6:00 a.m. - 8:21 p.m.YHM-SEA
17h 21m1 stop
7:00 a.m. - 12:15 a.m.SEA-YHM
14h 15m1 stop
C$ 632WestJet
Find Deal
Fri, 12 Jul - Mon, 15 Jul
6:00 a.m. - 8:21 p.m.YHM-SEA
17h 21m1 stop
7:00 a.m. - 5:13 p.m.SEA-YHM
7h 13m1 stop
C$ 647WestJet
Find Deal
Thu, 15 Aug - Mon, 23 Sep
7:15 a.m. - 12:56 p.m.YHM-SEA
8h 41m1 stop
7:00 a.m. - 12:15 a.m.SEA-YHM
14h 15m1 stop
C$ 659WestJet
Find Deal
Tue, 18 Jun - Sun, 30 Jun
6:00 a.m. - 12:56 p.m.YHM-SEA
9h 56m1 stop
1:50 p.m. - 12:15 a.m.SEA-YHM
7h 25m1 stop
C$ 663WestJet
Find Deal
Tue, 25 Jun - Tue, 2 Jul

Flights from Hamilton to Seattle - Travel Insights & Trends

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 cheapest month to fly from Hamilton to Seattle?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Hamilton to Seattle, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Hamilton to Seattle is January, where tickets cost C$ 537 on average. On the other hand, the most expensive months are December and August, where the average cost of tickets is C$ 806 and C$ 764 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Hamilton to Seattle, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Hamilton to Seattle, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 59 days before departure.

Good to know

Cheapest flight

C$ 341
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$ 248 for a one-way ticket and C$ 401 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.

  • Which airline alliances offer flights from Hamilton to Seattle?

    Star Alliance is the only airline alliance operating flights between Hamilton and Seattle.

  • 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.

See more FAQs

Top airline 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.
7.5
WestJetOverall score based on 3011 reviews
6.5entertainment
8.2crew
6.5food
7.3comfort
7.7boarding
Airline reviews

I wish that seats closer to the front of the plan were available, but when I booked the flight the seats were VERY expensive so I did not book seats at that time. The day before flying only seats at the back of the plane were available. It takes so long to board the plane and empty the plane on arrival due to SO many roller bags.

8.0 ExcellentAnonymous, Apr. 2024YYZ - ATL
Read more about WestJet reviews

I wish that seats closer to the front of the plan were available, but when I booked the flight the seats were VERY expensive so I did not book seats at that time. The day before flying only seats at the back of the plane were available. It takes so long to board the plane and empty the plane on arrival due to SO many roller bags.

Crew was rude.didn’t even say hi or welcome to board

Nothing special. Unacceptable wait for baggage on arriving in Calgary

Departure delay on a late night flight. Made us even later. Tired but got home.

Westjet forced me to put my carry-on baggage in check-in probably because I was assigned seat 23A (the last row seat), which had no cabin space, which is unfair. I wanted to carry on my luggage so that I don't have to wait at the airport for my luggage. Also, because there was no cabin space, I was forced to keep my laptop bag under the seat, which I didn't want to as I was carrying 2 laptops and charger. The airline should basically tell people that if you are assigned a last row seat, then you are not allowed a cabin baggage or a personal item.

Easy processing, flight time was quick and staff was professional and kind.

It was delayed by two ours very full no room to move

They seem to have squeezed out a little more legroom in these planes! It was very nice to not have to fold in half to fit in the seats!

Flight late …60 minutes No food No wifi No entertainment system A disaster!!!

No real issues just wasnt able to hear / understand any announcements flight attendant was making but everything else was really good- ended up checking my carry on case for free which made deboarding quicker. I would fly West Jet for all my flights.

Book cheap flights from Hamilton to Seattle

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Hamilton to Seattle found on KAYAK in the last 72 hours.
1/7Mon
1 stopWestJet
14h 21mYHM-SEA
C$ 341
24/7Wed
2 stopsWestJet
23h 41mYHM-SEA
C$ 370
21/9Sat
2 stopsWestJet
23h 43mYHM-SEA
C$ 409
21/9Sat
1 stopWestJet
29h 21mYHM-SEA
C$ 431
6/7Sat
2 stopsAir Canada
11h 40mYHM-SEA
C$ 435
7/7Sun
1 stopWestJet
9h 56mYHM-SEA
C$ 438
8/7Mon
1 stopWestJet
9h 56mYHM-SEA
C$ 444
21/5Tue
1 stopWestJet
21h 51mYHM-SEA
C$ 447
30/6Sun
2 stopsWestJet
11h 46mYHM-SEA
C$ 455
8/6Sat
2 stopsWestJet
23h 44mYHM-SEA
C$ 460

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Hamilton - Seattle Flights

Departure:

Hamilton (YHM)Canada

Destination:

Seattle (SEA)United States

Return flight deals:

Seattle - Hamilton

Cabin classes:

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