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$ 276 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.

7:00 a.m. - 5:15 p.m.

SEA

YHM

7h 15m

1 stop

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

YHM

SEA

18h 30m

1 stop

C$ 625WestJet

Sat, 5 Sep - Fri, 11 Sep

3:20 p.m. - 5:17 p.m.

SEA

YHM

22h 57m

1 stop

6:10 p.m. - 1:20 p.m.

YHM

SEA

22h 10m

1 stop

C$ 632WestJet

Sat, 31 Oct - Mon, 2 Nov

3:10 p.m. - 4:17 p.m.

SEA

YHM

22h 07m

1 stop

6:10 p.m. - 1:20 p.m.

YHM

SEA

22h 10m

1 stop

C$ 632WestJet

Wed, 4 Nov - Wed, 11 Nov

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$ 654WestJet

Wed, 26 Aug - Sun, 30 Aug

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$ 654WestJet

Sat, 29 Aug - Sat, 5 Sep

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$ 654WestJet

Fri, 28 Aug - Mon, 31 Aug

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$ 654WestJet

Wed, 26 Aug - Sat, 5 Sep

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$ 654WestJet

Fri, 28 Aug - Sat, 5 Sep

7:00 a.m. - 5:15 p.m.

SEA

YHM

7h 15m

1 stop

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

YHM

SEA

18h 30m

1 stop

C$ 665WestJet

Fri, 28 Aug - Sun, 30 Aug

7:00 a.m. - 5:15 p.m.

SEA

YHM

7h 15m

1 stop

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

YHM

SEA

18h 30m

1 stop

C$ 667WestJet

Sun, 23 Aug - Wed, 26 Aug

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WestJet flights from Seattle to Hamilton, Ontario

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

WestJet

5 Sep

SEA7:00 a.m.Seattle/Tacoma Intl

7h 15m

1 stop

YHM5:15 p.m.Hamilton

11 Sep

YHM6:10 p.m.Hamilton

18h 30m

1 stop

SEA9:40 a.m.Seattle/Tacoma Intl

C$ 625

WestJet

31 Oct

SEA3:20 p.m.Seattle/Tacoma Intl

22h 57m

1 stop

YHM5:17 p.m.Hamilton

2 Nov

YHM6:10 p.m.Hamilton

22h 10m

1 stop

SEA1:20 p.m.Seattle/Tacoma Intl

C$ 632

WestJet

26 Aug

SEA10:30 a.m.Seattle/Tacoma Intl

27h 45m

1 stop

YHM5:15 p.m.Hamilton

5 Sep

YHM6:10 p.m.Hamilton

18h 30m

1 stop

SEA9:40 a.m.Seattle/Tacoma Intl

C$ 654

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Sat 5/9

7:00 a.m.-5:15 p.m.

1 stop7h 15m

Hamilton

Fri 11/9

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

1 stop18h 30m

C$ 625

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Sat 31/10

3:20 p.m.-5:17 p.m.

1 stop22h 57m

Hamilton

Mon 2/11

6:10 p.m.-1:20 p.m.

1 stop22h 10m

C$ 632

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Wed 4/11

3:10 p.m.-4:17 p.m.

1 stop22h 07m

Hamilton

Wed 11/11

6:10 p.m.-1:20 p.m.

1 stop22h 10m

C$ 632

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Wed 26/8

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

1 stop27h 45m

Hamilton

Sun 30/8

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

1 stop18h 30m

C$ 654

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Sat 29/8

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

1 stop27h 45m

Hamilton

Sat 5/9

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

1 stop18h 30m

C$ 654

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Fri 28/8

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

1 stop18h 40m

Hamilton

Mon 31/8

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

1 stop18h 30m

C$ 654

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Wed 26/8

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

1 stop27h 45m

Hamilton

Sat 5/9

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

1 stop18h 30m

C$ 654

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Fri 28/8

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

1 stop18h 40m

Hamilton

Sat 5/9

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

1 stop18h 30m

C$ 654

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Fri 28/8

7:00 a.m.-5:15 p.m.

1 stop7h 15m

Hamilton

Sun 30/8

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

1 stop18h 30m

C$ 665

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Sun 23/8

7:00 a.m.-5:15 p.m.

1 stop7h 15m

Hamilton

Wed 26/8

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

1 stop18h 30m

C$ 667

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 50% 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.