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$ 171 Cheap Flights from Seattle to Hamilton in 2025/26

1 adult

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

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.

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$ 440WestJet

Find Deal

Sun, 5 Apr - Wed, 8 Apr

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$ 528Multiple Airlines

Find Deal

Tue, 2 Dec - Tue, 9 Dec

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$ 531WestJet

Find Deal

Sun, 9 Nov - Thu, 13 Nov

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

10h 10m1 stop

8:15 a.m. - 2:31 p.m.YHM-SEA

9h 16m1 stop

C$ 541Multiple Airlines

Find Deal

Wed, 3 Dec - Wed, 10 Dec

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

10h 10m1 stop

8:15 a.m. - 2:31 p.m.YHM-SEA

9h 16m1 stop

C$ 548Multiple Airlines

Find Deal

Sat, 15 Nov - Sat, 22 Nov

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

10h 10m1 stop

8:15 a.m. - 2:31 p.m.YHM-SEA

9h 16m1 stop

C$ 551Multiple Airlines

Find Deal

Sat, 15 Nov - Sat, 22 Nov

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$ 559WestJet

Find Deal

Sun, 9 Nov - Thu, 13 Nov

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

10h 10m1 stop

8:15 a.m. - 2:31 p.m.YHM-SEA

9h 16m1 stop

C$ 565Multiple Airlines

Find Deal

Sat, 15 Nov - Sat, 22 Nov

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

10h 10m1 stop

8:15 a.m. - 2:31 p.m.YHM-SEA

9h 16m1 stop

C$ 568Multiple Airlines

Find Deal

Sat, 15 Nov - Sat, 22 Nov

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

10h 10m1 stop

8:15 a.m. - 2:31 p.m.YHM-SEA

9h 16m1 stop

C$ 572Multiple Airlines

Find Deal

Sat, 15 Nov - Sat, 22 Nov

WestJet flights from Seattle to Hamilton, Ontario

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

WestJet

5 Apr

SEA3:10 p.m.Seattle/Tacoma Intl

23h 06m

1 stop

YHM5:16 p.m.Hamilton

8 Apr

YHM6:10 p.m.Hamilton

23h 09m

1 stop

SEA2:19 p.m.Seattle/Tacoma Intl

C$ 440

Find similar

WestJet

9 Nov

SEA3:10 p.m.Seattle/Tacoma Intl

23h 07m

1 stop

YHM5:17 p.m.Hamilton

13 Nov

YHM6:10 p.m.Hamilton

23h 10m

1 stop

SEA2:20 p.m.Seattle/Tacoma Intl

C$ 531

Find similar

WestJet

9 Nov

SEA3:10 p.m.Seattle/Tacoma Intl

23h 07m

1 stop

YHM5:17 p.m.Hamilton

13 Nov

YHM6:10 p.m.Hamilton

23h 10m

1 stop

SEA2:20 p.m.Seattle/Tacoma Intl

C$ 559

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Sun 5/4

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

1 stop23h 06m

Hamilton

Wed 8/4

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

1 stop23h 09m

C$ 440

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Tue 2/12

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

1 stop10h 10m

Hamilton

Tue 9/12

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

1 stop14h 01m

C$ 528

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Sun 9/11

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

1 stop23h 07m

Hamilton

Thu 13/11

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

1 stop23h 10m

C$ 531

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Wed 3/12

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

1 stop10h 10m

Hamilton

Wed 10/12

8:15 a.m.-2:31 p.m.

1 stop9h 16m

C$ 541

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Sat 15/11

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

1 stop10h 10m

Hamilton

Sat 22/11

8:15 a.m.-2:31 p.m.

1 stop9h 16m

C$ 548

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Sat 15/11

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

1 stop10h 10m

Hamilton

Sat 22/11

8:15 a.m.-2:31 p.m.

1 stop9h 16m

C$ 551

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Sun 9/11

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

1 stop23h 07m

Hamilton

Thu 13/11

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

1 stop23h 10m

C$ 559

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Sat 15/11

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

1 stop10h 10m

Hamilton

Sat 22/11

8:15 a.m.-2:31 p.m.

1 stop9h 16m

C$ 565

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Sat 15/11

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

1 stop10h 10m

Hamilton

Sat 22/11

8:15 a.m.-2:31 p.m.

1 stop9h 16m

C$ 568

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Sat 15/11

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

1 stop10h 10m

Hamilton

Sat 22/11

8:15 a.m.-2:31 p.m.

1 stop9h 16m

C$ 572

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 45% 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

Direct flights	None

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 10m.
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.