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$ 349 Cheap Flights from Seattle to Hamilton, Ontario in 2026/27

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.

2:30 p.m. - 2:25 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

20h 55m1 stop Calgary

3:25 p.m. - 1:40 p.m.YHM Hamilton-SEA Seattle/Tacoma Intl

25h 15m1 stop Calgary

C$ 775WestJet

Wed, 24 Feb - Sun, 28 Feb

2:30 p.m. - 2:25 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

20h 55m1 stop Calgary

3:25 p.m. - 1:40 p.m.YHM Hamilton-SEA Seattle/Tacoma Intl

25h 15m1 stop Calgary

C$ 791WestJet

Wed, 10 Feb - Tue, 16 Feb

2:20 p.m. - 2:25 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

21h 05m1 stop Calgary

3:25 p.m. - 1:40 p.m.YHM Hamilton-SEA Seattle/Tacoma Intl

25h 15m1 stop Calgary

C$ 824WestJet

Sat, 21 Nov - Tue, 24 Nov

2:30 p.m. - 2:25 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

20h 55m1 stop Calgary

3:25 p.m. - 1:40 p.m.YHM Hamilton-SEA Seattle/Tacoma Intl

25h 15m1 stop Calgary

C$ 875WestJet

Wed, 25 Nov - Tue, 1 Dec

2:30 p.m. - 2:25 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

20h 55m1 stop Calgary

3:25 p.m. - 1:40 p.m.YHM Hamilton-SEA Seattle/Tacoma Intl

25h 15m1 stop Calgary

C$ 887WestJet

Wed, 9 Dec - Sun, 13 Dec

2:20 p.m. - 2:25 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

21h 05m1 stop Calgary

3:25 p.m. - 1:40 p.m.YHM Hamilton-SEA Seattle/Tacoma Intl

25h 15m1 stop Calgary

C$ 921WestJet

Sat, 28 Nov - Tue, 8 Dec

2:20 p.m. - 2:25 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

21h 05m1 stop Calgary

3:25 p.m. - 1:40 p.m.YHM Hamilton-SEA Seattle/Tacoma Intl

25h 15m1 stop Calgary

C$ 937WestJet

Sat, 21 Nov - Tue, 24 Nov

2:30 p.m. - 2:25 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

20h 55m1 stop Calgary

7:05 a.m. - 12:56 p.m.YHM Hamilton-SEA Seattle/Tacoma Intl

8h 51m1 stop Vancouver Intl

C$ 946Multiple Airlines

Wed, 25 Nov - Sun, 29 Nov

2:20 p.m. - 2:25 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

21h 05m1 stop Calgary

3:25 p.m. - 1:40 p.m.YHM Hamilton-SEA Seattle/Tacoma Intl

25h 15m1 stop Calgary

C$ 947WestJet

Sat, 21 Nov - Tue, 24 Nov

10:10 a.m. - 12:08 a.m.SEA Seattle/Tacoma Intl-YHM Hamilton

10h 58m1 stop Vancouver Intl

6:05 a.m. - 2:37 p.m.YHM Hamilton-SEA Seattle/Tacoma Intl

11h 32m2 stops MET - Montreal Metropolitan Vancouver Intl

C$ 958Multiple Airlines

Mon, 16 Nov - Sun, 22 Nov

Cheap last-minute flights

Enter your travel dates to find the best prices.

2:20 p.m. - 2:25 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

21h 05m1 stop Calgary

7:05 a.m. - 12:57 p.m.YHM Hamilton-SEA Seattle/Tacoma Intl

8h 52m1 stop Vancouver Intl

C$ 1,608Multiple Airlines

Sat, 7 Nov - Mon, 9 Nov

8:40 a.m. - 10:10 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

10h 30m2 stops Vancouver Intl Ottawa

7:05 a.m. - 2:37 p.m.YHM Hamilton-SEA Seattle/Tacoma Intl

10h 32m1 stop Vancouver Intl

C$ 1,616Multiple Airlines

Fri, 6 Nov - Fri, 13 Nov

2:30 p.m. - 2:25 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

20h 55m1 stop Calgary

6:20 a.m. - 9:45 a.m.YHM Hamilton-SEA Seattle/Tacoma Intl

30h 25m3 stops Fort Lauderdale Atlanta Hartsfield-Jackson Las Vegas Harry Reid Intl

C$ 1,671Multiple Airlines

Wed, 4 Nov - Sat, 7 Nov

2:30 p.m. - 2:25 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

20h 55m1 stop Calgary

3:25 p.m. - 1:40 p.m.YHM Hamilton-SEA Seattle/Tacoma Intl

25h 15m1 stop Calgary

C$ 1,672WestJet

Mon, 2 Nov - Thu, 5 Nov

2:30 p.m. - 2:25 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

20h 55m1 stop Calgary

6:20 a.m. - 9:45 a.m.YHM Hamilton-SEA Seattle/Tacoma Intl

30h 25m3 stops Fort Lauderdale Houston George Bush Intcntl Las Vegas Harry Reid Intl

C$ 1,703Multiple Airlines

Wed, 4 Nov - Sun, 8 Nov

9:13 p.m. - 10:35 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

22h 22m3 stops Las Vegas Harry Reid Intl Denver Intl Tampa

6:20 a.m. - 9:45 a.m.YHM Hamilton-SEA Seattle/Tacoma Intl

30h 25m3 stops Fort Lauderdale Houston George Bush Intcntl Las Vegas Harry Reid Intl

C$ 1,724Multiple Airlines

Fri, 6 Nov - Sun, 8 Nov

2:30 p.m. - 2:25 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

20h 55m1 stop Calgary

7:05 a.m. - 12:57 p.m.YHM Hamilton-SEA Seattle/Tacoma Intl

8h 52m1 stop Vancouver Intl

C$ 1,737Multiple Airlines

Wed, 4 Nov - Sun, 8 Nov

2:30 p.m. - 2:25 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

20h 55m1 stop Calgary

7:05 a.m. - 2:44 p.m.YHM Hamilton-SEA Seattle/Tacoma Intl

10h 39m1 stop Vancouver Intl

C$ 1,795Multiple Airlines

Wed, 4 Nov - Sat, 7 Nov

2:30 p.m. - 2:25 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

20h 55m1 stop Calgary

3:25 p.m. - 7:35 a.m.YHM Hamilton-SEA Seattle/Tacoma Intl

19h 10m2 stops Calgary Vancouver Intl

C$ 2,003WestJet

Mon, 2 Nov - Thu, 5 Nov

2:30 p.m. - 2:25 p.m.SEA Seattle/Tacoma Intl-YHM Hamilton

20h 55m1 stop Calgary

3:25 p.m. - 1:40 p.m.YHM Hamilton-SEA Seattle/Tacoma Intl

25h 15m1 stop Calgary

C$ 2,082WestJet

Mon, 2 Nov - Sun, 8 Nov

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WestJet flights from Seattle to Hamilton, Ontario

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

WestJet

24 Feb

SEA2:30 p.m.Seattle/Tacoma Intl

20h 55m

1 stop

YHM2:25 p.m.Hamilton

28 Feb

YHM3:25 p.m.Hamilton

25h 15m

1 stop

SEA1:40 p.m.Seattle/Tacoma Intl

C$ 775

WestJet

10 Feb

SEA2:30 p.m.Seattle/Tacoma Intl

20h 55m

1 stop

YHM2:25 p.m.Hamilton

16 Feb

YHM3:25 p.m.Hamilton

25h 15m

1 stop

SEA1:40 p.m.Seattle/Tacoma Intl

C$ 791

WestJet

21 Nov

SEA2:20 p.m.Seattle/Tacoma Intl

21h 05m

1 stop

YHM2:25 p.m.Hamilton

24 Nov

YHM3:25 p.m.Hamilton

25h 15m

1 stop

SEA1:40 p.m.Seattle/Tacoma Intl

C$ 824

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

Cheapest round-trip

SeattleHamilton

SEA Seattle/Tacoma Intl - YHM Hamilton

SEAYHM

Seattle/Tacoma Intl

Wed 24/2

2:30 p.m.-2:25 p.m.

1 stop20h 55m

Hamilton

Sun 28/2

3:25 p.m.-1:40 p.m.

1 stop25h 15m

C$ 775

SeattleHamilton

SEA Seattle/Tacoma Intl - YHM Hamilton

SEAYHM

Seattle/Tacoma Intl

Wed 10/2

2:30 p.m.-2:25 p.m.

1 stop20h 55m

Hamilton

Tue 16/2

3:25 p.m.-1:40 p.m.

1 stop25h 15m

C$ 791

SeattleHamilton

SEA Seattle/Tacoma Intl - YHM Hamilton

SEAYHM

Seattle/Tacoma Intl

Sat 21/11

2:20 p.m.-2:25 p.m.

1 stop21h 05m

Hamilton

Tue 24/11

3:25 p.m.-1:40 p.m.

1 stop25h 15m

C$ 824

SeattleHamilton

SEA Seattle/Tacoma Intl - YHM Hamilton

SEAYHM

Seattle/Tacoma Intl

Wed 25/11

2:30 p.m.-2:25 p.m.

1 stop20h 55m

Hamilton

Tue 1/12

3:25 p.m.-1:40 p.m.

1 stop25h 15m

C$ 875

SeattleHamilton

SEA Seattle/Tacoma Intl - YHM Hamilton

SEAYHM

Seattle/Tacoma Intl

Wed 9/12

2:30 p.m.-2:25 p.m.

1 stop20h 55m

Hamilton

Sun 13/12

3:25 p.m.-1:40 p.m.

1 stop25h 15m

C$ 887

SeattleHamilton

SEA Seattle/Tacoma Intl - YHM Hamilton

SEAYHM

Seattle/Tacoma Intl

Sat 28/11

2:20 p.m.-2:25 p.m.

1 stop21h 05m

Hamilton

Tue 8/12

3:25 p.m.-1:40 p.m.

1 stop25h 15m

C$ 921

SeattleHamilton

SEA Seattle/Tacoma Intl - YHM Hamilton

SEAYHM

Seattle/Tacoma Intl

Sat 21/11

2:20 p.m.-2:25 p.m.

1 stop21h 05m

Hamilton

Tue 24/11

3:25 p.m.-1:40 p.m.

1 stop25h 15m

C$ 937

SeattleHamilton

SEA Seattle/Tacoma Intl - YHM Hamilton

SEAYHM

Seattle/Tacoma Intl

Wed 25/11

2:30 p.m.-2:25 p.m.

1 stop20h 55m

Hamilton

Sun 29/11

7:05 a.m.-12:56 p.m.

1 stop8h 51m

C$ 946

SeattleHamilton

SEA Seattle/Tacoma Intl - YHM Hamilton

SEAYHM

Seattle/Tacoma Intl

Sat 21/11

2:20 p.m.-2:25 p.m.

1 stop21h 05m

Hamilton

Tue 24/11

3:25 p.m.-1:40 p.m.

1 stop25h 15m

C$ 947

Quickest round-trip

SeattleHamilton

SEA Seattle/Tacoma Intl - YHM Hamilton

SEAYHM

Seattle/Tacoma Intl

Mon 16/11

10:10 a.m.-12:08 a.m.

1 stop10h 58m

Hamilton

Sun 22/11

6:05 a.m.-2:37 p.m.

2 stops11h 32m

C$ 958

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 49% 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

Best price found	C$ 349
Fastest flight time	11h 06m
Direct flights	None

The best one-way flight to Hamilton, Ontario from Seattle in the past 72 hours is C$ 349. The best round-trip flight deal from Seattle to Hamilton, Ontario found on momondo in the last 72 hours is C$ 775.

The fastest flight from Seattle to Hamilton, Ontario takes 11h 06m

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 11h 06m.
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.