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Cheap flights from Washington to Toronto from $139

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Toronto departing on 6/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Enter your travel dates to find the best prices.
WestJet Logo
7:00 am - 5:15 pm
SEA
-
YHM
7h 15m
1 stop
WestJet Logo
6:10 pm - 9:40 am
YHM
-
SEA
18h 30m
1 stop
$393WestJet
Thu, Aug 20 - Mon, Aug 24
WestJet Logo
7:00 am - 5:15 pm
SEA
-
YHM
7h 15m
1 stop
WestJet Logo
6:10 pm - 9:40 am
YHM
-
SEA
18h 30m
1 stop
$401WestJet
Thu, Jul 23 - Sun, Jul 26
WestJet Logo
10:30 am - 5:15 pm
SEA
-
YHM
27h 45m
1 stop
WestJet Logo
6:10 pm - 9:40 am
YHM
-
SEA
18h 30m
1 stop
$403WestJet
Mon, Jun 8 - Mon, Jun 15
WestJet Logo
7:00 am - 5:15 pm
SEA
-
YHM
7h 15m
1 stop
WestJet Logo
6:10 pm - 6:45 pm
YHM
-
SEA
27h 35m
1 stop
$410WestJet
Tue, Jul 21 - Thu, Aug 13
WestJet Logo
7:00 am - 5:15 pm
SEA
-
YHM
7h 15m
1 stop
WestJet Logo
6:10 pm - 9:40 am
YHM
-
SEA
18h 30m
1 stop
$412WestJet
Tue, Jun 30 - Tue, Jul 14
Multiple Airlines Logo
7:00 am - 5:15 pm
SEA
-
YHM
7h 15m
1 stop
Multiple Airlines Logo
6:15 am - 6:45 pm
YHM
-
SEA
15h 30m
3 stops
$421Multiple Airlines
Fri, Jun 19 - Mon, Jun 29
Multiple Airlines Logo
10:30 am - 5:15 pm
SEA
-
YHM
27h 45m
1 stop
Multiple Airlines Logo
8:50 am - 9:00 pm
YHM
-
SEA
15h 10m
2 stops
$424Multiple Airlines
Mon, Jun 8 - Mon, Jun 15
Multiple Airlines Logo
7:00 am - 5:15 pm
SEA
-
YHM
7h 15m
1 stop
Multiple Airlines Logo
7:00 am - 6:45 pm
YHM
-
SEA
14h 45m
2 stops
$427Multiple Airlines
Fri, Jun 19 - Mon, Jun 29
WestJet Logo
7:00 am - 5:15 pm
SEA
-
YHM
7h 15m
1 stop
WestJet Logo
6:10 pm - 9:40 am
YHM
-
SEA
18h 30m
1 stop
$429WestJet
Sun, Jul 19 - Sun, Jul 26
WestJet Logo
7:00 am - 5:15 pm
SEA
-
YHM
7h 15m
1 stop
WestJet Logo
6:10 pm - 6:45 pm
YHM
-
SEA
27h 35m
1 stop
$432WestJet
Thu, Jul 23 - Mon, Jul 27

WestJet flights from State of Washington to Hamilton, Ontario

Our best WestJet deals on State of Washington to Hamilton, Ontario flight tickets
WestJet
Aug 20
SEA7:00 amSeattle/Tacoma Intl
7h 15m
1 stop
YHM5:15 pmHamilton
Aug 24
YHM6:10 pmHamilton
18h 30m
1 stop
SEA9:40 amSeattle/Tacoma Intl
$393
WestJet
Jul 23
SEA7:00 amSeattle/Tacoma Intl
7h 15m
1 stop
YHM5:15 pmHamilton
Jul 26
YHM6:10 pmHamilton
18h 30m
1 stop
SEA9:40 amSeattle/Tacoma Intl
$401
WestJet
Jun 8
SEA10:30 amSeattle/Tacoma Intl
27h 45m
1 stop
YHM5:15 pmHamilton
Jun 15
YHM6:10 pmHamilton
18h 30m
1 stop
SEA9:40 amSeattle/Tacoma Intl
$403

momondo Fare Finder

 
Customize your flight search to find flights from State of Washington to Hamilton, Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated May 12, 2026.
Use the filters below to find and compare flights from Washington to Hamilton, Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Thu 8/20

7:00 am-5:15 pm

1 stop7h 15m

Hamilton

Mon 8/24

6:10 pm-9:40 am

1 stop18h 30m

$393

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Thu 7/23

7:00 am-5:15 pm

1 stop7h 15m

Hamilton

Sun 7/26

6:10 pm-9:40 am

1 stop18h 30m

$401

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Mon 6/8

10:30 am-5:15 pm

1 stop27h 45m

Hamilton

Mon 6/15

6:10 pm-9:40 am

1 stop18h 30m

$403

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Tue 7/21

7:00 am-5:15 pm

1 stop7h 15m

Hamilton

Thu 8/13

6:10 pm-6:45 pm

1 stop27h 35m

$410

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Tue 6/30

7:00 am-5:15 pm

1 stop7h 15m

Hamilton

Tue 7/14

6:10 pm-9:40 am

1 stop18h 30m

$412

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Fri 6/19

7:00 am-5:15 pm

1 stop7h 15m

Hamilton

Mon 6/29

6:15 am-6:45 pm

3 stops15h 30m

$421

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Mon 6/8

10:30 am-5:15 pm

1 stop27h 45m

Hamilton

Mon 6/15

8:50 am-9:00 pm

2 stops15h 10m

$424
Quickest round-trip

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Fri 6/19

7:00 am-5:15 pm

1 stop7h 15m

Hamilton

Mon 6/29

7:00 am-6:45 pm

2 stops14h 45m

$427

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Sun 7/19

7:00 am-5:15 pm

1 stop7h 15m

Hamilton

Sun 7/26

6:10 pm-9:40 am

1 stop18h 30m

$429

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Thu 7/23

7:00 am-5:15 pm

1 stop7h 15m

Hamilton

Mon 7/27

6:10 pm-6:45 pm

1 stop27h 35m

$432

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Toronto from

How to get the cheapest flight ticket from State of Washington 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 Washington to Hamilton?

WestJet is the most popular carrier operating from Washington 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 State of Washington according to our data. Alaska Airlines is the first choice among our users, with 59% 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.

Cheap State of Washington to Hamilton, Ontario flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Hamilton, Ontario

Fastest flight time

7h 15m

Direct flights

None
The fastest flight from State of Washington to Hamilton, Ontario takes 7h 15m
There are no direct flights from State of Washington to Hamilton, Ontario. There are no popular flight routes from State of Washington to Hamilton, Ontario.
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Frequently asked questions about flying from Washington to Hamilton, Ontario

  • When did momondo last update prices for flights from Washington to Hamilton Airport?

    Prices for flights from Washington to Hamilton Airport refresh daily.

  • How old do you have to be to fly from Washington to Hamilton Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington to Hamilton Airport.

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

    The travel and health documents you'll need for your trip to Hamilton Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Hamilton Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington to Hamilton. Millions of users trust and use momondo every year so you are in good hands.

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

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

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

momondo helps you find the best flight between Washington 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 Washington to Hamilton right now. Can momondo alert me if prices change?

Price alerts on flights to Hamilton from Washington are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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