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$ 158 Cheap Flights from Seattle to Hamilton in 2026

1 adult

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.

10:30 a.m. - 5:15 p.m.

SEA

YHM

27h 45m

1 stop

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

YHM

SEA

27h 35m

1 stop

C$ 442WestJet

Thu, 21 May - Thu, 28 May

10:30 a.m. - 5:15 p.m.

SEA

YHM

27h 45m

1 stop

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

YHM

SEA

27h 35m

1 stop

C$ 458WestJet

Tue, 12 May - Sat, 6 Jun

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

SEA

YHM

18h 40m

1 stop

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

YHM

SEA

18h 30m

1 stop

C$ 461WestJet

Fri, 15 May - Mon, 25 May

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

SEA

YHM

18h 40m

1 stop

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

YHM

SEA

18h 30m

1 stop

C$ 465WestJet

Thu, 4 Jun - Sat, 6 Jun

10:30 a.m. - 5:15 p.m.

SEA

YHM

27h 45m

1 stop

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

YHM

SEA

18h 30m

1 stop

C$ 469WestJet

Tue, 12 May - Sat, 16 May

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

SEA

YHM

18h 40m

1 stop

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

YHM

SEA

27h 35m

1 stop

C$ 470WestJet

Fri, 8 May - Sun, 10 May

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

SEA

YHM

18h 40m

1 stop

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

YHM

SEA

27h 35m

1 stop

C$ 473WestJet

Fri, 5 Jun - Tue, 9 Jun

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

SEA

YHM

18h 40m

1 stop

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

YHM

SEA

18h 30m

1 stop

C$ 476WestJet

Sat, 30 May - Sat, 6 Jun

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

SEA

YHM

18h 40m

1 stop

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

YHM

SEA

18h 30m

1 stop

C$ 480WestJet

Sat, 30 May - Sat, 6 Jun

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

SEA

YHM

18h 40m

1 stop

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

YHM

SEA

18h 30m

1 stop

C$ 483WestJet

Thu, 18 Jun - Mon, 22 Jun

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Early arrival? Instantly customize your results

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

WestJet flights from Seattle to Hamilton, Ontario

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

WestJet

21 May

SEA10:30 a.m.Seattle/Tacoma Intl

27h 45m

1 stop

YHM5:15 p.m.Hamilton

28 May

YHM6:10 p.m.Hamilton

27h 35m

1 stop

SEA6:45 p.m.Seattle/Tacoma Intl

C$ 442

WestJet

12 May

SEA10:30 a.m.Seattle/Tacoma Intl

27h 45m

1 stop

YHM5:15 p.m.Hamilton

6 Jun

YHM6:10 p.m.Hamilton

27h 35m

1 stop

SEA6:45 p.m.Seattle/Tacoma Intl

C$ 458

WestJet

15 May

SEA7:35 p.m.Seattle/Tacoma Intl

18h 40m

1 stop

YHM5:15 p.m.Hamilton

25 May

YHM6:10 p.m.Hamilton

18h 30m

1 stop

SEA9:40 a.m.Seattle/Tacoma Intl

C$ 461

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Thu 21/5

10:30 a.m.-5:15 p.m.

1 stop27h 45m

Hamilton

Thu 28/5

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

1 stop27h 35m

C$ 442

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Tue 12/5

10:30 a.m.-5:15 p.m.

1 stop27h 45m

Hamilton

Sat 6/6

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

1 stop27h 35m

C$ 458

Quickest round-trip

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Fri 15/5

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

1 stop18h 40m

Hamilton

Mon 25/5

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

1 stop18h 30m

C$ 461

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Thu 4/6

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

1 stop18h 40m

Hamilton

Sat 6/6

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

1 stop18h 30m

C$ 465

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Tue 12/5

10:30 a.m.-5:15 p.m.

1 stop27h 45m

Hamilton

Sat 16/5

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

1 stop18h 30m

C$ 469

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Fri 8/5

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

1 stop18h 40m

Hamilton

Sun 10/5

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

1 stop27h 35m

C$ 470

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Fri 5/6

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

1 stop18h 40m

Hamilton

Tue 9/6

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

1 stop27h 35m

C$ 473

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Sat 30/5

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

1 stop18h 40m

Hamilton

Sat 6/6

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

1 stop18h 30m

C$ 476

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Sat 30/5

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

1 stop18h 40m

Hamilton

Sat 6/6

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

1 stop18h 30m

C$ 480

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Thu 18/6

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

1 stop18h 40m

Hamilton

Mon 22/6

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

1 stop18h 30m

C$ 483

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 60% 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

Fastest flight time	7h 15m
Direct flights	None

The fastest flight from Seattle to Hamilton, Ontario takes 7h 15m

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 7h 15m.
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.