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$161+ Cheap flights from Hamilton, ON (YHM) to Washington

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/31. Fares are subject to change and may not be available on all flights or dates of travel.
YHM — SEA
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap flight deals from Hamilton to Washington

Cheapest flights from Hamilton to Washington
Explore the most affordable flight options available from Hamilton to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.

This Trip.com deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/306:10 pm
YHM
-
SEA
1 stop18h 30m
WestJet
Fri 5/17:35 pm
SEA
-
YHM
1 stop18h 40m
WestJet
Deal found 1/28$273
This Trip.com deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/86:10 pm
YHM
-
SEA
1 stop18h 30m
WestJet
Sat 5/167:35 pm
SEA
-
YHM
1 stop18h 40m
WestJet
Deal found 1/29$275
This oojo deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/116:10 pm
YHM
-
SEA
1 stop23h 09m
WestJet
Tue 3/173:10 pm
SEA
-
YHM
1 stop23h 06m
WestJet
Deal found 1/26$278
This oojo deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/166:10 pm
YHM
-
SEA
1 stop18h 30m
WestJet
Mon 5/257:35 pm
SEA
-
YHM
1 stop18h 40m
WestJet
Deal found 1/27$280
This FlightHub deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/226:10 pm
YHM
-
PDX
1 stop22h 40m
WestJet
Tue 5/262:30 pm
PDX
-
YHM
1 stop23h 45m
WestJet
Deal found 1/29$307
This oojo deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/206:10 pm
YHM
-
SEA
1 stop18h 30m
WestJet
Thu 5/217:35 pm
SEA
-
YHM
1 stop18h 40m
WestJet
Deal found 1/27$323
This Kiwi.com deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/116:10 pm
YHM
-
SEA
1 stop23h 09m
Multiple Airlines
Tue 3/1711:08 pm
SEA
-
YHM
2 stops15h 08m
Multiple Airlines
Deal found 1/26$375
This oojo deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/236:10 pm
YHM
-
SEA
1 stop23h 09m
WestJet
Thu 3/53:10 pm
SEA
-
YHM
1 stop19h 11m
WestJet
Deal found 1/26$380
This Trip.com deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/116:10 pm
YHM
-
SEA
1 stop23h 09m
WestJet
Sun 3/153:10 pm
SEA
-
YHM
1 stop23h 06m
WestJet
Deal found 1/27$388
This oojo deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/256:10 pm
YHM
-
SEA
1 stop23h 09m
WestJet
Wed 3/43:10 pm
SEA
-
YHM
1 stop23h 06m
WestJet
Deal found 1/27$395
This Trip.com deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/266:10 pm
YHM
-
SEA
1 stop23h 09m
WestJet
Wed 3/43:10 pm
SEA
-
YHM
1 stop23h 06m
WestJet
Deal found 1/28$401
This oojo deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/236:10 pm
YHM
-
PDX
1 stop22h 40m
WestJet
Mon 5/252:30 pm
PDX
-
YHM
1 stop23h 45m
WestJet
Deal found 1/29$423

Find flight deals from Hamilton to Washington

Keep the following information in mind while searching for Hamilton to Washington flight deals. Data was last updated January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$273
(Trip.com)

One-way from

$161
(Mytrip)

Popular in

June

Cheapest in

February

Average price

$398
Provider with most accurate pricing for Toronto (YTO)-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Toronto (YTO)-Seattle/Tacoma Intl flights.
Search Deals
From Hamilton to Washington
Search Deals
One-way flight from Hamilton to Washington
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($33 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Hamilton to Washington 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, Cheapflights users made 2,558,603 searches. Data last updated January 29, 2026.
Use the filters below to find and compare flights from Hamilton to Washington that are best for you.

Fly from

Hamilton

Fly to

Washington

Route

Depart

Return

Price

HamiltonSeattle

YHM - SEA

YHMSEA

Hamilton

Sat 5/16

6:10 pm-9:40 am

1 stop18h 30m

Seattle/Tacoma Intl

Mon 5/25

7:35 pm-5:15 pm

1 stop18h 40m

$275

HamiltonSeattle

YHM - SEA

YHMSEA

Hamilton

Wed 3/11

6:10 pm-2:19 pm

1 stop23h 09m

Seattle/Tacoma Intl

Tue 3/17

3:10 pm-5:16 pm

1 stop23h 06m

$278

HamiltonSeattle

YHM - SEA

YHMSEA

Hamilton

Wed 3/11

6:10 pm-2:19 pm

1 stop23h 09m

Seattle/Tacoma Intl

Tue 3/17

11:08 pm-5:16 pm

2 stops15h 08m

$375

HamiltonSeattle

YHM - SEA

YHMSEA

Hamilton

Mon 2/23

6:10 pm-2:19 pm

1 stop23h 09m

Seattle/Tacoma Intl

Thu 3/5

3:10 pm-1:21 pm

1 stop19h 11m

$380

HamiltonSeattle

YHM - SEA

YHMSEA

Hamilton

Wed 3/11

6:10 pm-2:19 pm

1 stop23h 09m

Seattle/Tacoma Intl

Sun 3/15

3:10 pm-5:16 pm

1 stop23h 06m

$390

HamiltonSeattle

YHM - SEA

YHMSEA

Hamilton

Thu 2/26

6:10 pm-2:19 pm

1 stop23h 09m

Seattle/Tacoma Intl

Thu 3/5

3:10 pm-1:21 pm

1 stop19h 11m

$390

HamiltonSeattle

YHM - SEA

YHMSEA

Hamilton

Wed 2/25

6:10 pm-2:19 pm

1 stop23h 09m

Seattle/Tacoma Intl

Wed 3/4

3:10 pm-5:16 pm

1 stop23h 06m

$395

HamiltonSeattle

YHM - SEA

YHMSEA

Hamilton

Thu 2/26

6:10 pm-2:19 pm

1 stop23h 09m

Seattle/Tacoma Intl

Wed 3/4

3:10 pm-5:16 pm

1 stop23h 06m

$401

HamiltonSeattle

YHM - SEA

YHMSEA

Hamilton

Thu 2/26

6:10 pm-2:19 pm

1 stop23h 09m

Seattle/Tacoma Intl

Sun 3/1

3:10 pm-5:16 pm

1 stop23h 06m

$427

HamiltonPortland

YHM - PDX

YHMPDX

Hamilton

Fri 4/3

2:35 pm-9:38 pm

2 stops10h 03m

Portland

Mon 4/6

6:00 am-7:00 pm

2 stops10h 00m

$641

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Showing 1-10 of 34 results
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Best time to book a flight from Hamilton to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Hamilton with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Hamilton to Washington

What is the cheapest month to book a flight from Hamilton, Ontario to State of Washington?

Currently, December is the cheapest month in which you can book a flight from Hamilton, Ontario to State of Washington (average of $131). Flying from Hamilton, Ontario to State of Washington in August is currently the most expensive (average of $223). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Hamilton to Washington. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Hamilton to Washington?

    Located just 6.8 mi from the city center, Hamilton (YHM) is the airport most travelers will use when flying to Washington from Hamilton.

  • How long is the flight from Hamilton, Ontario to State of Washington?

    WestJet can get you from Hamilton, Ontario to State of Washington in just under 18h 30m. Your travel time can differ by up to . The distance between Hamilton, Ontario and State of Washington is about 2053 mi.

  • Can I find deals for flights from Hamilton to Washington that include hotel bookings?

    Yes. In addition to deals on Hamilton to Washington flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Hamilton to Washington?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Hamilton to Washington.

  • Can I find deals for business class flights from Hamilton to Washington?

    Yes. Cheapflights offers flight deals from Hamilton to Washington by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Hamilton, Ontario to State of Washington?

    Currently, December is the cheapest month in which you can book a flight from Hamilton, Ontario to State of Washington (average of $131). Flying from Hamilton, Ontario to State of Washington in August is currently the most expensive (average of $223). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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