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 are updated daily.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Hamilton Airport.

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

The required travel and health documents for your Hamilton Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Hamilton Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$112 Cheap Flights from Seattle to Hamilton in 2026

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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.

7:05 am - 5:10 pm

SEA

YHM

7h 05m

1 stop

6:10 pm - 8:28 pm

YHM

SEA

29h 18m

1 stop

$275WestJet

Wed, May 13 - Fri, May 15

7:05 am - 5:10 pm

SEA

YHM

7h 05m

1 stop

6:10 pm - 1:08 pm

YHM

SEA

21h 58m

1 stop

$298WestJet

Tue, May 12 - Sun, May 17

7:05 am - 5:10 pm

SEA

YHM

7h 05m

1 stop

6:10 pm - 1:08 pm

YHM

SEA

21h 58m

1 stop

$301WestJet

Sat, May 2 - Sun, May 10

7:05 am - 5:10 pm

SEA

YHM

7h 05m

1 stop

6:10 pm - 1:08 pm

YHM

SEA

21h 58m

1 stop

$302WestJet

Fri, May 22 - Tue, May 26

7:05 am - 5:10 pm

SEA

YHM

7h 05m

1 stop

6:10 pm - 1:08 pm

YHM

SEA

21h 58m

1 stop

$303WestJet

Tue, May 12 - Sun, May 17

3:10 pm - 5:16 pm

SEA

YHM

23h 06m

1 stop

6:10 pm - 2:19 pm

YHM

SEA

23h 09m

1 stop

$306WestJet

Tue, Mar 31 - Mon, Apr 6

3:10 pm - 5:16 pm

SEA

YHM

23h 06m

1 stop

5:50 am - 2:19 pm

YHM

SEA

11h 29m

1 stop

$333WestJet

Wed, Mar 18 - Tue, Mar 24

3:10 pm - 1:21 pm

SEA

YHM

19h 11m

1 stop

6:10 pm - 2:19 pm

YHM

SEA

23h 09m

1 stop

$337WestJet

Thu, Mar 5 - Wed, Mar 11

7:05 am - 5:10 pm

SEA

YHM

7h 05m

1 stop

6:10 pm - 2:09 pm

YHM

SEA

22h 59m

3 stops

$396WestJet

Wed, May 13 - Fri, May 15

7:05 am - 5:10 pm

SEA

YHM

7h 05m

1 stop

6:10 pm - 1:08 pm

YHM

SEA

21h 58m

1 stop

$398WestJet

Thu, May 28 - Fri, Jun 5

WestJet flights from Seattle to Hamilton, Ontario

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

WestJet

Apr 9

SEA3:10 pmSeattle/Tacoma Intl

19h 11m

1 stop

YHM1:21 pmHamilton

Apr 13

YHM6:10 pmHamilton

23h 09m

1 stop

SEA2:19 pmSeattle/Tacoma Intl

$303

WestJet

Mar 31

SEA3:10 pmSeattle/Tacoma Intl

23h 06m

1 stop

YHM5:16 pmHamilton

Apr 6

YHM6:10 pmHamilton

23h 09m

1 stop

SEA2:19 pmSeattle/Tacoma Intl

$306

WestJet

Mar 18

SEA3:10 pmSeattle/Tacoma Intl

23h 06m

1 stop

YHM5:16 pmHamilton

Mar 25

YHM6:10 pmHamilton

23h 09m

1 stop

SEA2:19 pmSeattle/Tacoma Intl

$333

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

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Wed 5/13

7:05 am-5:10 pm

1 stop7h 05m

Hamilton

Fri 5/15

6:10 pm-8:28 pm

1 stop29h 18m

$275

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Tue 5/12

7:05 am-5:10 pm

1 stop7h 05m

Hamilton

Sun 5/17

6:10 pm-1:08 pm

1 stop21h 58m

$298

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Sat 5/2

7:05 am-5:10 pm

1 stop7h 05m

Hamilton

Sun 5/10

6:10 pm-1:08 pm

1 stop21h 58m

$301

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Fri 5/22

7:05 am-5:10 pm

1 stop7h 05m

Hamilton

Tue 5/26

6:10 pm-1:08 pm

1 stop21h 58m

$302

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Tue 5/12

7:05 am-5:10 pm

1 stop7h 05m

Hamilton

Sun 5/17

6:10 pm-1:08 pm

1 stop21h 58m

$303

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Tue 3/31

3:10 pm-5:16 pm

1 stop23h 06m

Hamilton

Mon 4/6

6:10 pm-2:19 pm

1 stop23h 09m

$306

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Wed 3/18

3:10 pm-5:16 pm

1 stop23h 06m

Hamilton

Tue 3/24

5:50 am-2:19 pm

1 stop11h 29m

$333

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Thu 3/5

3:10 pm-1:21 pm

1 stop19h 11m

Hamilton

Wed 3/11

6:10 pm-2:19 pm

1 stop23h 09m

$337

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Wed 5/13

7:05 am-5:10 pm

1 stop7h 05m

Hamilton

Fri 5/15

6:10 pm-2:09 pm

3 stops22h 59m

$396

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Thu 5/28

7:05 am-5:10 pm

1 stop7h 05m

Hamilton

Fri 6/5

6:10 pm-1:08 pm

1 stop21h 58m

$398

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

What 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 traveling to Hamilton, Ontario. Keep in mind that there are 5 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 05m
Direct flights	None

The fastest flight from Seattle to Hamilton, Ontario takes 7h 05m

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

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How far is Seattle/Tacoma Intl to Hamilton by plane?
The distance between Seattle/Tacoma Intl and Hamilton is about 2054.4 mi. A reasonable flight in good conditions will take 7h 05m.
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 are updated daily.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Hamilton Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Hamilton Airport.
What documentation or ID do you need to fly to Hamilton Airport?
The required travel and health documents for your Hamilton Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Hamilton Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Seattle to Hamilton for you.

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

All flight searches from Seattle to Hamilton on momondo can be filtered to show those which offer flexible booking policies.

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

momondo helps you find the best flight between Seattle and Hamilton by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Of course. momondo tracks the price of Seattle to Hamilton flights. All you need is a valid email address and we will do the rest; it is that quick and easy.