When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Hamilton Airport?

Prices for flights from Seattle/Tacoma Intl Airport to Hamilton Airport refresh daily.

How old do you have to be to fly from Seattle/Tacoma Intl Airport to Hamilton Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Seattle/Tacoma Intl Airport to Hamilton Airport.

What documentation or ID do you need to fly to Hamilton Airport?

The travel and health documents required for your trip to Hamilton Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Hamilton Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

C$ 254 Cheap Flights from Seattle to Hamilton, Ontario in 2026

Find the cheapest flights from Seattle to Toronto

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

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

18h 40m1 stop Calgary

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

27h 35m1 stop Calgary

C$ 526WestJet

Thu, 8 Oct - Mon, 12 Oct

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

18h 40m1 stop Calgary

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

27h 35m1 stop Calgary

C$ 533WestJet

Thu, 8 Oct - Mon, 12 Oct

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

18h 40m1 stop Calgary

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

18h 30m1 stop Calgary

C$ 562WestJet

Tue, 13 Oct - Fri, 16 Oct

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

18h 40m1 stop Calgary

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

18h 30m1 stop Calgary

C$ 566WestJet

Wed, 23 Sep - Wed, 7 Oct

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

18h 40m1 stop Calgary

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

18h 30m1 stop Calgary

C$ 566WestJet

Wed, 23 Sep - Tue, 6 Oct

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

18h 40m1 stop Calgary

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

18h 30m1 stop Calgary

C$ 566WestJet

Sat, 10 Oct - Tue, 13 Oct

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

18h 40m1 stop Calgary

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

18h 30m1 stop Calgary

C$ 567WestJet

Thu, 8 Oct - Sun, 11 Oct

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

18h 40m1 stop Calgary

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

18h 30m1 stop Calgary

C$ 567WestJet

Sat, 10 Oct - Tue, 13 Oct

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

18h 40m1 stop Calgary

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

18h 30m1 stop Calgary

C$ 569WestJet

Wed, 21 Oct - Fri, 23 Oct

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

18h 40m1 stop Calgary

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

18h 30m1 stop Calgary

C$ 569WestJet

Wed, 23 Sep - Sun, 27 Sep

Cheap last-minute flights

Enter your travel dates to find the best prices.

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

18h 40m1 stop Calgary

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

18h 30m1 stop Calgary

C$ 778WestJet

Thu, 17 Sep - Tue, 6 Oct

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

18h 40m1 stop Calgary

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

27h 35m1 stop Calgary

C$ 823WestJet

Thu, 17 Sep - Tue, 6 Oct

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

18h 40m1 stop Calgary

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

18h 30m1 stop Calgary

C$ 882WestJet

Thu, 17 Sep - Tue, 6 Oct

9:07 a.m. - 5:15 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

29h 08m2 stops Vancouver Intl Calgary

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

18h 30m1 stop Calgary

C$ 1,001WestJet

Thu, 17 Sep - Tue, 6 Oct

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

18h 40m1 stop Calgary

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

27h 35m1 stop Calgary

C$ 1,007WestJet

Thu, 17 Sep - Tue, 6 Oct

9:07 a.m. - 5:15 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

29h 08m2 stops Vancouver Intl Calgary

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

18h 30m1 stop Calgary

C$ 1,015WestJet

Thu, 17 Sep - Tue, 6 Oct

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

27h 45m1 stop Calgary

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

18h 30m1 stop Calgary

C$ 1,060WestJet

Thu, 17 Sep - Tue, 6 Oct

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

18h 40m1 stop Calgary

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

27h 35m1 stop Calgary

C$ 1,081WestJet

Thu, 17 Sep - Mon, 21 Sep

10:30 a.m. - 7:34 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

30h 04m3 stops Calgary Edmonton Winnipeg

7:00 a.m. - 6:45 p.m.YHM Hamilton-SEA Seattle/Tacoma Intl

14h 45m3 stops Winnipeg Edmonton Calgary

C$ 1,118Multiple Airlines

Wed, 16 Sep - Wed, 23 Sep

10:30 a.m. - 7:34 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

30h 04m3 stops Calgary Edmonton Winnipeg

7:00 a.m. - 6:45 p.m.YHM Hamilton-SEA Seattle/Tacoma Intl

14h 45m2 stops Winnipeg Calgary

C$ 1,119Multiple Airlines

Wed, 16 Sep - Wed, 23 Sep

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WestJet flights from Seattle to Hamilton, Ontario

Our best WestJet deals on Seattle to Hamilton, Ontario flight tickets

WestJet

8 Oct

SEA7:35 p.m.Seattle/Tacoma Intl

18h 40m

1 stop

YHM5:15 p.m.Hamilton

12 Oct

YHM6:10 p.m.Hamilton

27h 35m

1 stop

SEA6:45 p.m.Seattle/Tacoma Intl

C$ 526

WestJet

8 Oct

SEA7:35 p.m.Seattle/Tacoma Intl

18h 40m

1 stop

YHM5:15 p.m.Hamilton

12 Oct

YHM6:10 p.m.Hamilton

27h 35m

1 stop

SEA6:45 p.m.Seattle/Tacoma Intl

C$ 533

WestJet

13 Oct

SEA7:35 p.m.Seattle/Tacoma Intl

18h 40m

1 stop

YHM5:15 p.m.Hamilton

16 Oct

YHM6:10 p.m.Hamilton

18h 30m

1 stop

SEA9:40 a.m.Seattle/Tacoma Intl

C$ 562

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleHamilton

SEA Seattle/Tacoma Intl - YHM Hamilton

SEAYHM

Seattle/Tacoma Intl

Thu 8/10

7:35 p.m.-5:15 p.m.

1 stop18h 40m

Hamilton

Mon 12/10

6:10 p.m.-6:45 p.m.

1 stop27h 35m

C$ 526

SeattleHamilton

SEA Seattle/Tacoma Intl - YHM Hamilton

SEAYHM

Seattle/Tacoma Intl

Thu 8/10

7:35 p.m.-5:15 p.m.

1 stop18h 40m

Hamilton

Mon 12/10

6:10 p.m.-6:45 p.m.

1 stop27h 35m

C$ 533

Quickest round-trip

SeattleHamilton

SEA Seattle/Tacoma Intl - YHM Hamilton

SEAYHM

Seattle/Tacoma Intl

Tue 13/10

7:35 p.m.-5:15 p.m.

1 stop18h 40m

Hamilton

Fri 16/10

6:10 p.m.-9:40 a.m.

1 stop18h 30m

C$ 562

SeattleHamilton

SEA Seattle/Tacoma Intl - YHM Hamilton

SEAYHM

Seattle/Tacoma Intl

Wed 23/9

7:35 p.m.-5:15 p.m.

1 stop18h 40m

Hamilton

Wed 7/10

6:10 p.m.-9:40 a.m.

1 stop18h 30m

C$ 566

SeattleHamilton

SEA Seattle/Tacoma Intl - YHM Hamilton

SEAYHM

Seattle/Tacoma Intl

Wed 23/9

7:35 p.m.-5:15 p.m.

1 stop18h 40m

Hamilton

Tue 6/10

6:10 p.m.-9:40 a.m.

1 stop18h 30m

C$ 566

SeattleHamilton

SEA Seattle/Tacoma Intl - YHM Hamilton

SEAYHM

Seattle/Tacoma Intl

Sat 10/10

7:35 p.m.-5:15 p.m.

1 stop18h 40m

Hamilton

Tue 13/10

6:10 p.m.-9:40 a.m.

1 stop18h 30m

C$ 566

SeattleHamilton

SEA Seattle/Tacoma Intl - YHM Hamilton

SEAYHM

Seattle/Tacoma Intl

Thu 8/10

7:35 p.m.-5:15 p.m.

1 stop18h 40m

Hamilton

Sun 11/10

6:10 p.m.-9:40 a.m.

1 stop18h 30m

C$ 567

SeattleHamilton

SEA Seattle/Tacoma Intl - YHM Hamilton

SEAYHM

Seattle/Tacoma Intl

Sat 10/10

7:35 p.m.-5:15 p.m.

1 stop18h 40m

Hamilton

Tue 13/10

6:10 p.m.-9:40 a.m.

1 stop18h 30m

C$ 567

SeattleHamilton

SEA Seattle/Tacoma Intl - YHM Hamilton

SEAYHM

Seattle/Tacoma Intl

Wed 21/10

7:35 p.m.-5:15 p.m.

1 stop18h 40m

Hamilton

Fri 23/10

6:10 p.m.-9:40 a.m.

1 stop18h 30m

C$ 569

SeattleHamilton

SEA Seattle/Tacoma Intl - YHM Hamilton

SEAYHM

Seattle/Tacoma Intl

Wed 23/9

7:35 p.m.-5:15 p.m.

1 stop18h 40m

Hamilton

Sun 27/9

6:10 p.m.-9:40 a.m.

1 stop18h 30m

C$ 569

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Seattle to Hamilton, Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Seattle/Tacoma Intl to Hamilton?

WestJet is the most popular carrier operating from Seattle/Tacoma Intl to Hamilton

Which airlines fly to Hamilton, Ontario?

Alaska Airlines, WestJet and Air Canada are the top three most popular airlines that fly to Hamilton, Ontario from Seattle according to our data. Alaska Airlines is the first choice among our users, with 48% of people opting to fly with this airline when travelling to Hamilton, Ontario. Keep in mind that there are 3 different airlines that fly to Hamilton, Ontario on a routine basis, so you have a few additional options to choose from.

When to book flights from Seattle to Hamilton, Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Hamilton, Ontario according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Seattle to Hamilton, Ontario (SEA to YHM) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Hamilton, Ontario

Best price found	C$ 254
Fastest flight time	9h 20m
Direct flights	None

The best one-way flight to Hamilton, Ontario from Seattle in the past 72 hours is C$ 254. The best round-trip flight deal from Seattle to Hamilton, Ontario found on momondo in the last 72 hours is C$ 526.

The fastest flight from Seattle to Hamilton, Ontario takes 9h 20m

There are no direct flights from Seattle to Hamilton, Ontario. There are no popular flight routes from Seattle to Hamilton, Ontario.

Search flight deals

Frequently asked questions about flying from Seattle to Hamilton, Ontario

How far is Seattle/Tacoma Intl to Hamilton by plane?
There are 3306.3 km between Seattle/Tacoma Intl and Hamilton. In terms of flight time, this usually takes a little over 9h 20m.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Hamilton Airport?
Prices for flights from Seattle/Tacoma Intl Airport to Hamilton Airport refresh daily.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Hamilton Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Seattle/Tacoma Intl Airport to Hamilton Airport.
What documentation or ID do you need to fly to Hamilton Airport?
The travel and health documents required for your trip to Hamilton Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Hamilton Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Hamilton?

It is quick and easy to find Seattle to Hamilton flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Hamilton that suits you.

Can I find flights from Seattle to Hamilton with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Hamilton from Seattle with this policy.

How can momondo help me find flights from Seattle to Hamilton?

momondo provides multiple filters to help you find the best flight to Hamilton from Seattle. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Seattle to Hamilton right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Hamilton, momondo offers a useful price alert feature which will track prices for flights to Hamilton from Seattle and alert you when they change.