Which airports can I use when flying from Hamilton to Seattle?

Flights from Hamilton to Seattle usually depart from Hamilton (YHM) and arrive at Seattle/Tacoma Intl (SEA).

Which cabin classes can I book on flights from Hamilton to Seattle?

Only Economy Class is available on flights from Hamilton to Seattle.

Which airports do connecting flights from Hamilton to Seattle pass through?

Connecting flights from Hamilton to Seattle most commonly pass through: • Calgary (YYC) – 89% of one-stop connections • Toronto Pearson Intl (YYZ) – 11% of one-stop connections Together, these airports account for 100% of one-stop bookings on this route.

Can I save money by using flexible dates for flights from Hamilton to Seattle?

On the Hamilton to Seattle route, being flexible with your departure day can save you up to 73%. Sunday is the cheapest day at C$ 379 round-trip on average, while Thursday is the most expensive at C$ 1,403 – a C$ 1,024 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

Which popular places can I visit in Seattle?

Some of the most popular sights in Seattle are Lumen Field, T-Mobile Park, and Seattle Waterfront. These are among the most viewed places in Seattle on KAYAK.

How long does a flight from Hamilton to Seattle take?

There are currently no direct flights available from Hamilton to Seattle. Flights with 1 layover take between 8h 39m and 10h 01m in total, depending on the connection.

Do I need a passport to fly from Hamilton to Seattle?

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

Have flight prices from Hamilton to Seattle changed much recently?

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about C$ 478 to C$ 1,479. That means the highest observed fare was about 3x higher than the lowest one.

How are flight prices from Hamilton to Seattle looking right now?

One-way fares from Hamilton to Seattle are currently lower than usual. Average one-way flight prices are about C$ 271, which is 13% below the typical average for this route.

How much time can I save by choosing a different layover airport when travelling from Hamilton to Seattle?

Flying via Toronto Pearson Intl (YYZ) gives the shortest average 1-stop total travel time at 8h 39m, compared with 10h 01m via Calgary (YYC).

What is the time difference between Hamilton and Seattle?

Seattle is 3 hours behind Hamilton (Pacific Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

What car rental options are available at Seattle/Tacoma Intl Airport (SEA)?

Seattle/Tacoma Intl Airport (SEA) hosts 5 major car rental companies, with daily rates starting from around C$ 5 for economy cars. Top options include: • Fox • Europcar • Thrifty • Budget • Dollar

How much should I expect to pay for a Hamilton to Seattle flight?

Round-trip flights from Hamilton to Seattle range from C$ 360 to C$ 835, with an average of C$ 555 over the past 12 months. Anything below C$ 360 counts as a good deal.

What is the cheapest airline to fly from Hamilton to Seattle?

WestJet (C$ 478) offered the cheapest round-trip ticket from Hamilton to Seattle in the last 5 days.

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

Calgary (YYC) is the most popular layover for the Hamilton to Seattle route. 89% of KAYAK users who booked 1-stop round-trips over the past 3 months connected via YYC.

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

Flights via Toronto Pearson Intl (YYZ) offer the most affordable fares, with an average round-trip price of C$ 306. Based on KAYAK data over the past 3 months.

When flying from Hamilton to Seattle, which airport offers the shortest layover?

Toronto Pearson Intl (YYZ) had the shortest average connection time for Hamilton to Seattle layovers at 338 minutes over the past 3 months.

C$ 268 CHEAP FLIGHTS from Hamilton to Seattle (YHM - SEA)

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Cheapest round-trip

C$ 478

Typical prices: C$ 360-C$ 835

WestJet

Thu 11/10Thu 18/10

YHM - SEA • 1 stop

Cheapest one-way flights

C$ 268

Typical prices: C$ 300-C$ 315

WestJet

Sat 6/10

YHM - SEA • 1 stop

Top layover airports

Toronto Pearson Intl (YYZ)

Cheapest • Avg C$ 306 (round-trip)

Calgary (YYC)

Shortest trip • 10h 01m (one-way)

Insights

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Flight Deals

Cheap Flights from Hamilton to Seattle (YHM-SEA)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from Hamilton to Seattle

Sun, 11 Oct - Sun, 18 Oct

6:10 p.m. - 9:40 a.m.YHM Hamilton-SEA Seattle/Tacoma Intl

18h 30m1 stop Calgary

7:35 p.m. - 5:15 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

18h 40m1 stop Calgary

C$ 478WestJet

Mon, 12 Oct - Mon, 19 Oct

6:10 p.m. - 6:45 p.m.YHM Hamilton-SEA Seattle/Tacoma Intl

27h 35m1 stop Calgary

7:35 p.m. - 5:15 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

18h 40m1 stop Calgary

C$ 478WestJet

Sun, 11 Oct - Wed, 21 Oct

6:10 p.m. - 9:40 a.m.YHM Hamilton-SEA Seattle/Tacoma Intl

18h 30m1 stop Calgary

7:35 p.m. - 5:15 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

18h 40m1 stop Calgary

C$ 478WestJet

Fri, 16 Oct - Mon, 19 Oct

6:10 p.m. - 6:45 p.m.YHM Hamilton-SEA Seattle/Tacoma Intl

27h 35m1 stop Calgary

7:35 p.m. - 5:15 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

18h 40m1 stop Calgary

C$ 479WestJet

Fri, 16 Oct - Thu, 22 Oct

6:10 p.m. - 6:45 p.m.YHM Hamilton-SEA Seattle/Tacoma Intl

27h 35m1 stop Calgary

7:35 p.m. - 5:15 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

18h 40m1 stop Calgary

C$ 481WestJet

Fri, 16 Oct - Wed, 21 Oct

6:10 p.m. - 9:40 a.m.YHM Hamilton-SEA Seattle/Tacoma Intl

18h 30m1 stop Calgary

7:35 p.m. - 5:15 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

18h 40m1 stop Calgary

C$ 481WestJet

Wed, 14 Oct - Sun, 18 Oct

6:10 p.m. - 9:40 a.m.YHM Hamilton-SEA Seattle/Tacoma Intl

18h 30m1 stop Calgary

7:35 p.m. - 5:15 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

18h 40m1 stop Calgary

C$ 481WestJet

Tue, 6 Oct - Tue, 20 Oct

6:10 p.m. - 9:40 a.m.YHM Hamilton-SEA Seattle/Tacoma Intl

18h 30m1 stop Calgary

7:35 p.m. - 5:15 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

18h 40m1 stop Calgary

C$ 481WestJet

Fri, 16 Oct - Mon, 19 Oct

6:10 p.m. - 6:45 p.m.YHM Hamilton-SEA Seattle/Tacoma Intl

27h 35m1 stop Calgary

7:35 p.m. - 5:15 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

18h 40m1 stop Calgary

C$ 481WestJet

Fri, 2 Oct - Sun, 11 Oct

6:10 p.m. - 9:40 a.m.YHM Hamilton-SEA Seattle/Tacoma Intl

18h 30m1 stop Calgary

10:30 a.m. - 11:13 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

9h 43m1 stop Calgary

C$ 608Multiple Airlines

Recent last minute flight deals from Hamilton to Seattle

Fri, 18 Sep - Mon, 21 Sep

6:10 p.m. - 6:45 p.m.YHM Hamilton-SEA Seattle/Tacoma Intl

27h 35m1 stop Calgary

10:30 a.m. - 5:15 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

27h 45m1 stop Calgary

C$ 960WestJet

Fri, 18 Sep - Sun, 20 Sep

6:10 p.m. - 9:40 a.m.YHM Hamilton-SEA Seattle/Tacoma Intl

18h 30m1 stop Calgary

7:35 p.m. - 5:15 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

18h 40m1 stop Calgary

C$ 1,154WestJet

Sun, 20 Sep - Wed, 23 Sep

6:10 p.m. - 9:40 a.m.YHM Hamilton-SEA Seattle/Tacoma Intl

18h 30m1 stop Calgary

10:30 a.m. - 5:15 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

27h 45m1 stop Calgary

C$ 1,171WestJet

Fri, 18 Sep - Sun, 20 Sep

6:10 p.m. - 9:40 a.m.YHM Hamilton-SEA Seattle/Tacoma Intl

18h 30m1 stop Calgary

7:35 p.m. - 5:15 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

18h 40m1 stop Calgary

C$ 1,171WestJet

Fri, 18 Sep - Mon, 21 Sep

6:10 p.m. - 9:40 a.m.YHM Hamilton-SEA Seattle/Tacoma Intl

18h 30m1 stop Calgary

7:35 p.m. - 5:15 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

18h 40m1 stop Calgary

C$ 1,202WestJet

Tue, 15 Sep - Tue, 22 Sep

6:10 p.m. - 9:40 a.m.YHM Hamilton-SEA Seattle/Tacoma Intl

18h 30m1 stop Calgary

7:35 p.m. - 5:15 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

18h 40m1 stop Calgary

C$ 1,204WestJet

Tue, 15 Sep - Tue, 22 Sep

6:10 p.m. - 9:40 a.m.YHM Hamilton-SEA Seattle/Tacoma Intl

18h 30m1 stop Calgary

7:35 p.m. - 5:15 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

18h 40m1 stop Calgary

C$ 1,209WestJet

Tue, 15 Sep - Tue, 22 Sep

6:10 p.m. - 7:35 a.m.YHM Hamilton-SEA Seattle/Tacoma Intl

16h 25m2 stops Calgary Vancouver Intl

7:35 p.m. - 5:15 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

18h 40m1 stop Calgary

C$ 1,239WestJet

Thu, 17 Sep - Thu, 24 Sep

6:10 p.m. - 9:40 a.m.YHM Hamilton-SEA Seattle/Tacoma Intl

18h 30m1 stop Calgary

7:35 p.m. - 5:15 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

18h 40m1 stop Calgary

C$ 1,274WestJet

Wed, 16 Sep - Wed, 23 Sep

6:10 p.m. - 9:40 a.m.YHM Hamilton-SEA Seattle/Tacoma Intl

18h 30m1 stop Calgary

7:35 p.m. - 5:15 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

18h 40m1 stop Calgary

C$ 1,328WestJet

Booking Insights

Price, demand, and travel trends for Hamilton to Seattle flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights from Hamilton to Seattle with more confidence.

Prices

Airlines

Layovers

How much is a round-trip flight from Hamilton to Seattle?

Round-trip flights from Hamilton to Seattle start at C$ 478. Prices are typical for this route right now, with typical round-trip fares ranging from C$ 360 to C$ 835. The lowest price found in the past 5 days was C$ 478 on WestJet.

Find deals

Cheapest flight	C$ 268

Flights 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.

Which airports can I use when flying from Hamilton to Seattle?
Flights from Hamilton to Seattle usually depart from Hamilton (YHM) and arrive at Seattle/Tacoma Intl (SEA).
Which cabin classes can I book on flights from Hamilton to Seattle?
Only Economy Class is available on flights from Hamilton to Seattle.
Which airports do connecting flights from Hamilton to Seattle pass through?
Connecting flights from Hamilton to Seattle most commonly pass through:

• Calgary (YYC) – 89% of one-stop connections
• Toronto Pearson Intl (YYZ) – 11% of one-stop connections
Together, these airports account for 100% of one-stop bookings on this route.
Can I save money by using flexible dates for flights from Hamilton to Seattle?
On the Hamilton to Seattle route, being flexible with your departure day can save you up to 73%. Sunday is the cheapest day at C$ 379 round-trip on average, while Thursday is the most expensive at C$ 1,403 – a C$ 1,024 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.
Which popular places can I visit in Seattle?
Some of the most popular sights in Seattle are Lumen Field, T-Mobile Park, and Seattle Waterfront. These are among the most viewed places in Seattle on KAYAK.
How long does a flight from Hamilton to Seattle take?
There are currently no direct flights available from Hamilton to Seattle. Flights with 1 layover take between 8h 39m and 10h 01m in total, depending on the connection.
Do I need a passport to fly from Hamilton to Seattle?
Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.
Have flight prices from Hamilton to Seattle changed much recently?
Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about C$ 478 to C$ 1,479. That means the highest observed fare was about 3x higher than the lowest one.
How are flight prices from Hamilton to Seattle looking right now?
One-way fares from Hamilton to Seattle are currently lower than usual. Average one-way flight prices are about C$ 271, which is 13% below the typical average for this route.
How much time can I save by choosing a different layover airport when travelling from Hamilton to Seattle?
Flying via Toronto Pearson Intl (YYZ) gives the shortest average 1-stop total travel time at 8h 39m, compared with 10h 01m via Calgary (YYC).
What is the time difference between Hamilton and Seattle?
Seattle is 3 hours behind Hamilton (Pacific Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.
What car rental options are available at Seattle/Tacoma Intl Airport (SEA)?
Seattle/Tacoma Intl Airport (SEA) hosts 5 major car rental companies, with daily rates starting from around C$ 5 for economy cars. Top options include:
• Fox
• Europcar
• Thrifty
• Budget
• Dollar
How much should I expect to pay for a Hamilton to Seattle flight?
Round-trip flights from Hamilton to Seattle range from C$ 360 to C$ 835, with an average of C$ 555 over the past 12 months. Anything below C$ 360 counts as a good deal.

If your dates are flexible, aim for a Sunday departure instead of Thursday. On this route, Sunday flights average C$ 379 – about C$ 1,024 less than Thursday (73% savings) based on the last 12 months.
If you're arriving late at night and need somewhere to stay, check out these hotels close to Seattle/Tacoma Intl Airport.
- Seattle Airport Marriott
- Coast Gateway Hotel
- Fairfield by Marriott Inn & Suites Seattle Sea-Tac Airport

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YHM - SEA

C$ 268 Find Cheap Flights from Hamilton to Seattle – Compare and Save

Everything you should know

Cheap Flights from Hamilton to Seattle (YHM-SEA)

Recent round-trip flight deals from Hamilton to Seattle

Recent one-way flight deals from Hamilton to Seattle

Recent last minute flight deals from Hamilton to Seattle

Price, demand, and travel trends for Hamilton to Seattle flights

How much is a round-trip flight from Hamilton to Seattle?

What is the cheapest airline to fly from Hamilton to Seattle?

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

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

When flying from Hamilton to Seattle, which airport offers the shortest layover?

Key details for Hamilton to Seattle flights

Cheapest flight

When to book flights from Hamilton to Seattle

Your Hamilton to Seattle flight questions, answered

Your guide to booking Hamilton to Seattle flights

More options for your flight from Hamilton to Seattle

Complete your trip to Seattle with a hotel stay or car rental

Information on your arrival and departure airports

Cabin class types available on flights from Hamilton to Seattle

Find direct flights to and from Hamilton and Seattle

Flights from domestic origins to Seattle

Flights to other popular destinations

Find deals for your return flight