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$ 170 Cheap Flights from Seattle to Hamilton in 2025/26

1 adult

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Find the cheapest flights from Seattle to Toronto

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

3:10 p.m. - 5:16 p.m.

SEA

YHM

23h 06m1 stop

6:10 p.m. - 2:19 p.m.

YHM

SEA

23h 09m1 stop

C$ 398WestJet

Wed, 11 Feb - Mon, 16 Feb

5:50 a.m. - 7:00 p.m.

SEA

YHM

10h 10m1 stop

8:15 a.m. - 7:16 p.m.

YHM

SEA

14h 01m1 stop

C$ 508Multiple Airlines

Tue, 20 Jan - Tue, 27 Jan

5:50 a.m. - 7:00 p.m.

SEA

YHM

10h 10m1 stop

8:15 a.m. - 10:06 p.m.

YHM

SEA

16h 51m1 stop

C$ 510Multiple Airlines

Wed, 21 Jan - Wed, 28 Jan

5:50 a.m. - 7:00 p.m.

SEA

YHM

10h 10m1 stop

8:15 a.m. - 10:06 p.m.

YHM

SEA

16h 51m1 stop

C$ 517Multiple Airlines

Mon, 19 Jan - Mon, 26 Jan

8:00 p.m. - 5:17 p.m.

SEA

YHM

18h 17m2 stops

8:15 a.m. - 7:16 p.m.

YHM

SEA

14h 01m1 stop

C$ 533Multiple Airlines

Sat, 10 Jan - Sat, 17 Jan

10:05 a.m. - 5:17 p.m.

SEA

YHM

28h 12m3 stops

5:45 a.m. - 10:06 p.m.

YHM

SEA

19h 21m3 stops

C$ 536Multiple Airlines

Tue, 20 Jan - Tue, 27 Jan

8:32 a.m. - 10:18 p.m.

SEA

YHM

10h 46m1 stop

8:15 a.m. - 6:49 p.m.

YHM

SEA

13h 34m1 stop

C$ 725Multiple Airlines

Mon, 12 Jan - Thu, 15 Jan

3:10 p.m. - 1:22 p.m.

SEA

YHM

19h 12m1 stop

6:10 p.m. - 2:20 p.m.

YHM

SEA

23h 10m1 stop

C$ 732WestJet

Thu, 22 Jan - Mon, 26 Jan

3:10 p.m. - 5:17 p.m.

SEA

YHM

23h 07m1 stop

6:10 p.m. - 2:20 p.m.

YHM

SEA

23h 10m1 stop

C$ 751WestJet

Wed, 21 Jan - Wed, 28 Jan

8:32 a.m. - 10:18 p.m.

SEA

YHM

10h 46m1 stop

8:15 a.m. - 6:49 p.m.

YHM

SEA

13h 34m1 stop

C$ 775Multiple Airlines

Wed, 14 Jan - Thu, 22 Jan

WestJet flights from Seattle to Hamilton, Ontario

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

WestJet

11 Feb

SEA3:10 p.m.Seattle/Tacoma Intl

23h 06m

1 stop

YHM5:16 p.m.Hamilton

16 Feb

YHM6:10 p.m.Hamilton

23h 09m

1 stop

SEA2:19 p.m.Seattle/Tacoma Intl

C$ 398

Find similar

WestJet

22 Jan

SEA3:10 p.m.Seattle/Tacoma Intl

19h 12m

1 stop

YHM1:22 p.m.Hamilton

26 Jan

YHM6:10 p.m.Hamilton

23h 10m

1 stop

SEA2:20 p.m.Seattle/Tacoma Intl

C$ 732

Find similar

WestJet

21 Jan

SEA3:10 p.m.Seattle/Tacoma Intl

23h 07m

1 stop

YHM5:17 p.m.Hamilton

28 Jan

YHM6:10 p.m.Hamilton

23h 10m

1 stop

SEA2:20 p.m.Seattle/Tacoma Intl

C$ 751

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Wed 11/2

3:10 p.m.-5:16 p.m.

1 stop23h 06m

Hamilton

Mon 16/2

6:10 p.m.-2:19 p.m.

1 stop23h 09m

C$ 398

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Tue 20/1

5:50 a.m.-7:00 p.m.

1 stop10h 10m

Hamilton

Tue 27/1

8:15 a.m.-7:16 p.m.

1 stop14h 01m

C$ 508

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Wed 21/1

5:50 a.m.-7:00 p.m.

1 stop10h 10m

Hamilton

Wed 28/1

8:15 a.m.-10:06 p.m.

1 stop16h 51m

C$ 510

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Mon 19/1

5:50 a.m.-7:00 p.m.

1 stop10h 10m

Hamilton

Mon 26/1

8:15 a.m.-10:06 p.m.

1 stop16h 51m

C$ 517

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Sat 10/1

8:00 p.m.-5:17 p.m.

2 stops18h 17m

Hamilton

Sat 17/1

8:15 a.m.-7:16 p.m.

1 stop14h 01m

C$ 533

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Tue 20/1

10:05 a.m.-5:17 p.m.

3 stops28h 12m

Hamilton

Tue 27/1

5:45 a.m.-10:06 p.m.

3 stops19h 21m

C$ 536

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Mon 12/1

8:32 a.m.-10:18 p.m.

1 stop10h 46m

Hamilton

Thu 15/1

8:15 a.m.-6:49 p.m.

1 stop13h 34m

C$ 725

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Thu 22/1

3:10 p.m.-1:22 p.m.

1 stop19h 12m

Hamilton

Mon 26/1

6:10 p.m.-2:20 p.m.

1 stop23h 10m

C$ 732

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Wed 21/1

3:10 p.m.-5:17 p.m.

1 stop23h 07m

Hamilton

Wed 28/1

6:10 p.m.-2:20 p.m.

1 stop23h 10m

C$ 751

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Wed 14/1

8:32 a.m.-10:18 p.m.

1 stop10h 46m

Hamilton

Thu 22/1

8:15 a.m.-6:49 p.m.

1 stop13h 34m

C$ 775

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, Air Canada and WestJet 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 54% of people opting to fly with this airline when travelling to Hamilton, Ontario. Keep in mind that there are 4 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

Fastest flight time	10h 10m
Direct flights	None

The fastest flight from Seattle to Hamilton, Ontario takes 10h 10m

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

Search flight deals

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 7h 02m.
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.