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$142+ 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 1/22. Fares are subject to change and may not be available on all flights or dates of travel.
YHM — SEA
Jan 16 — Jan 231
Fri 1/16
Fri 1/23
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 December 17, 2025.

This FlightHub deal was found by Cheapflights users on 12/17. 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.
Wed 12/246:10 pmYHM - SEA
2 stops16h 10mWestJet
Sun 12/287:45 pmSEA - YHM
2 stops18h 32mWestJet
Deal found 12/17$705
This Orbitz deal was found by Cheapflights users on 12/17. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/268:15 amYHM - SEA
1 stop9h 12mMultiple Airlines
Tue 3/311:25 amSEA - YHM
1 stop9h 10mMultiple Airlines
Deal found 12/17$789
This WestJet deal was found by Cheapflights users on 12/15. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/226:10 pmYHM - SEA
2 stops29h 36mWestJet
Thu 12/259:25 amSEA - YHM
2 stops24h 57mWestJet
Deal found 12/15$815
This FlightHub deal was found by Cheapflights users on 12/15. 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.
Sun 12/218:15 amYHM - SEA
1 stop9h 12mMultiple Airlines
Wed 12/3111:10 pmSEA - YHM
1 stop16h 50mMultiple Airlines
Deal found 12/15$913
This Orbitz deal was found by Cheapflights users on 12/15. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/298:15 amYHM - SEA
1 stop13h 35mMultiple Airlines
Sun 1/118:32 amSEA - YHM
1 stop10h 46mMultiple Airlines
Deal found 12/15$926
This WestJet deal was found by Cheapflights users on 12/15. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/216:10 pmYHM - SEA
2 stops21h 29mWestJet
Thu 12/259:25 amSEA - YHM
2 stops24h 57mWestJet
Deal found 12/15$934
This FlightHub deal was found by Cheapflights users on 12/16. 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 12/268:15 amYHM - SEA
1 stop9h 12mMultiple Airlines
Mon 12/2911:10 pmSEA - YHM
1 stop16h 50mMultiple Airlines
Deal found 12/16$937
This Kiwi.com deal was found by Cheapflights users on 12/16. 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.
Mon 12/221:45 pmYHM - PDX
1 stop34h 14mMultiple Airlines
Thu 1/82:30 pmPDX - YHM
2 stops25h 30mMultiple Airlines
Deal found 12/16$994
This oojo deal was found by Cheapflights users on 12/16. 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 12/296:10 pmYHM - SEA
1 stop23h 10mWestJet
Sun 1/113:10 pmSEA - YHM
1 stop23h 07mWestJet
Deal found 12/16$1,071
This oojo deal was found by Cheapflights users on 12/16. 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.
Sun 12/216:10 pmYHM - SEA
1 stop23h 10mWestJet
Sun 12/283:10 pmSEA - YHM
1 stop23h 07mWestJet
Deal found 12/16$1,130
This WestJet deal was found by Cheapflights users on 12/16. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/226:10 pmYHM - PDX
2 stops25h 30mWestJet
Thu 1/81:30 pmPDX - YHM
2 stops20h 52mWestJet
Deal found 12/16$1,688

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 December 17, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$240
(oojo)

One-way from

$142
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$449
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
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 17, 2025.
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

Thu 2/5

6:10 pm-2:19 pm

1 stop23h 09m

Seattle/Tacoma Intl

Sun 2/8

3:10 pm-5:16 pm

1 stop23h 06m

$240

HamiltonSeattle

YHM - SEA

YHMSEA

Hamilton

Mon 3/9

6:10 pm-2:19 pm

1 stop23h 09m

Seattle/Tacoma Intl

Sun 3/15

3:10 pm-5:16 pm

1 stop23h 06m

$251

HamiltonSeattle

YHM - SEA

YHMSEA

Hamilton

Sat 5/23

6:00 am-1:08 pm

1 stop10h 08m

Seattle/Tacoma Intl

Sun 5/31

7:05 am-12:40 am

1 stop14h 35m

$251

HamiltonSeattle

YHM - SEA

YHMSEA

Hamilton

Mon 1/12

6:10 pm-2:20 pm

1 stop23h 10m

Seattle/Tacoma Intl

Wed 1/14

3:10 pm-5:17 pm

1 stop23h 07m

$251

HamiltonSeattle

YHM - SEA

YHMSEA

Hamilton

Thu 3/5

6:10 pm-2:19 pm

1 stop23h 09m

Seattle/Tacoma Intl

Sun 3/8

3:10 pm-5:16 pm

1 stop23h 06m

$252

HamiltonSeattle

YHM - SEA

YHMSEA

Hamilton

Fri 5/1

6:00 am-8:28 pm

1 stop17h 28m

Seattle/Tacoma Intl

Thu 5/7

7:05 am-12:40 am

1 stop14h 35m

$252

HamiltonSeattle

YHM - SEA

YHMSEA

Hamilton

Wed 5/13

6:00 am-1:08 pm

1 stop10h 08m

Seattle/Tacoma Intl

Wed 5/20

7:05 am-12:40 am

1 stop14h 35m

$253

HamiltonSeattle

YHM - SEA

YHMSEA

Hamilton

Sat 5/2

6:00 am-8:28 pm

1 stop17h 28m

Seattle/Tacoma Intl

Sun 5/10

7:05 am-12:40 am

1 stop14h 35m

$258

HamiltonSeattle

YHM - SEA

YHMSEA

Hamilton

Sat 5/23

6:00 am-1:08 pm

1 stop10h 08m

Seattle/Tacoma Intl

Tue 6/2

7:05 am-12:40 am

1 stop14h 35m

$271

HamiltonSeattle

YHM - SEA

YHMSEA

Hamilton

Sat 1/31

8:15 am-6:49 pm

1 stop13h 34m

Seattle/Tacoma Intl

Sat 2/7

11:55 am-5:16 pm

2 stops26h 21m

$314

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 29 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 $133). Flying from Hamilton, Ontario to State of Washington in June is currently the most expensive (average of $249). 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 23h 09m. 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 $133). Flying from Hamilton, Ontario to State of Washington in June is currently the most expensive (average of $249). 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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