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Cheap flights from Washington to Hamilton, ON from C$ 118

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 17/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YHM
11 Oct — 18 Oct1
1 adult
1 adult, Economy

Cheap flight deals from Washington to Hamilton

Keep the following information in mind while searching for Washington to Hamilton flight deals. Data was last updated 11 September 2025.

Round-trip from

C$ 287

One-way from

C$ 118

Popular in

June

Cheapest in

January

Average price

C$ 565
WestJet
  • WestJet
  • 16/10-21/10
  • 2 total stops
  • 17h 49m total
  • Washington to Hamilton
Search Deals
WestJet
  • WestJet
  • 17/10
  • 1 total stop
  • 7h 50m total
  • Washington to Hamilton
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 124 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Washington to Hamilton

Cheapest flights from Washington to Hamilton
Explore the most affordable flight options available from Washington to Hamilton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2025.

Thu 16/101:50 p.m.SEA - YHM
1 stop7h 50mWestJet
Tue 21/106:00 a.m.YHM - SEA
1 stop9h 59mWestJet
Deal found 9/9C$ 287
Sat 18/101:50 p.m.SEA - YHM
1 stop7h 50mWestJet
Sat 25/106:00 a.m.YHM - SEA
1 stop9h 59mWestJet
Deal found 9/9C$ 290
Wed 1/101:50 p.m.SEA - YHM
1 stop7h 50mWestJet
Mon 6/106:00 a.m.YHM - SEA
1 stop17h 29mWestJet
Deal found 9/9C$ 309
Tue 21/107:05 a.m.SEA - YHM
1 stop14h 35mWestJet
Sat 25/106:00 a.m.YHM - SEA
1 stop9h 59mWestJet
Deal found 9/9C$ 340
Mon 20/102:05 p.m.SEA - YHM
1 stop7h 35mWestJet
Thu 23/106:00 a.m.YHM - SEA
1 stop9h 59mWestJet
Deal found 10/9C$ 348
Tue 4/113:10 p.m.SEA - YHM
1 stop23h 07mWestJet
Sun 16/116:10 p.m.YHM - SEA
1 stop23h 10mWestJet
Deal found 9/9C$ 377
Sun 19/108:40 a.m.SEA - YHM
1 stop13h 00mWestJet
Wed 22/106:00 a.m.YHM - SEA
1 stop9h 59mWestJet
Deal found 11/9C$ 394
Sat 25/1010:12 a.m.GEG - YHM
2 stops10h 47mMultiple Airlines
Sat 1/112:35 p.m.YHM - GEG
2 stops12h 47mMultiple Airlines
Deal found 10/9C$ 1,010
Fri 19/99:15 a.m.GEG - YHM
2 stops12h 25mWestJet
Mon 22/96:00 a.m.YHM - GEG
2 stops11h 49mWestJet
Deal found 10/9C$ 1,556
Fri 19/911:29 a.m.GEG - YHM
2 stops10h 11mWestJet
Sun 21/96:00 a.m.YHM - GEG
2 stops11h 49mWestJet
Deal found 10/9C$ 1,620
Sun 12/106:10 a.m.GEG - YHM
2 stops15h 30mWestJet
Sun 19/106:00 a.m.YHM - GEG
2 stops11h 57mWestJet
Deal found 10/9C$ 2,528
Sun 26/109:17 a.m.GEG - YHM
2 stops29h 00mWestJet
Sun 2/116:10 p.m.YHM - GEG
2 stops25h 34mWestJet
Deal found 11/9C$ 2,694

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to Hamilton 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 629,999 searches. Data last updated 11 September 2025.
Use the filters below to find and compare flights from Washington to Hamilton that are best for you.

Fly from

Washington

Fly to

Hamilton

Route

Depart

Return

Price

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Sat 18/10

1:50 p.m.-12:40 a.m.

1 stop7h 50m

Hamilton

Sat 25/10

6:00 a.m.-12:59 p.m.

1 stop9h 59m

C$ 290

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Wed 1/10

1:50 p.m.-12:40 a.m.

1 stop7h 50m

Hamilton

Mon 6/10

6:00 a.m.-8:29 p.m.

1 stop17h 29m

C$ 309

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Mon 20/10

2:05 p.m.-12:40 a.m.

1 stop7h 35m

Hamilton

Thu 23/10

6:00 a.m.-12:59 p.m.

1 stop9h 59m

C$ 348

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Thu 16/10

1:50 p.m.-12:40 a.m.

1 stop7h 50m

Hamilton

Tue 21/10

6:00 a.m.-12:59 p.m.

1 stop9h 59m

C$ 355

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Tue 11/11

3:10 p.m.-5:17 p.m.

1 stop23h 07m

Hamilton

Sun 16/11

6:10 p.m.-2:20 p.m.

1 stop23h 10m

C$ 377

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Sun 9/11

3:10 p.m.-5:17 p.m.

1 stop23h 07m

Hamilton

Thu 13/11

6:10 p.m.-2:20 p.m.

1 stop23h 10m

C$ 377

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Tue 4/11

3:10 p.m.-5:17 p.m.

1 stop23h 07m

Hamilton

Sun 16/11

6:10 p.m.-2:20 p.m.

1 stop23h 10m

C$ 377

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Sat 8/11

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

1 stop22h 57m

Hamilton

Sun 22/2

6:10 p.m.-2:19 p.m.

1 stop23h 09m

C$ 407

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Wed 1/10

8:40 a.m.-9:19 p.m.

1 stop9h 39m

Hamilton

Mon 13/10

12:10 p.m.-8:29 p.m.

1 stop11h 19m

C$ 417

SpokaneHamilton

GEG - YHM

GEGYHM

Spokane

Sat 25/10

10:12 a.m.-11:59 p.m.

2 stops10h 47m

Hamilton

Sat 1/11

2:35 p.m.-12:22 a.m.

2 stops12h 47m

C$ 1,010

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 22 results
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Best time to book a flight from Washington to Hamilton

Have a flexible travel schedule? Discover the best time to fly to Hamilton from Washington 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 Washington to Hamilton

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

Currently, January is the cheapest month in which you can book a flight from State of Washington to Hamilton, Ontario (average of C$ 186). Flying from State of Washington to Hamilton, Ontario in December is currently the most expensive (average of C$ 271). 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 Washington to Hamilton. 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 into for flights to Hamilton from Washington?

    Hamilton (YHM) is the airport you will fly into if you book a flight from Washington to Hamilton. It is only a 10.9 km journey from Hamilton (YHM) to Hamilton’s city centre.

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

    WestJet can get you from State of Washington to Hamilton, Ontario in just under 7h 50m. Your travel time can differ by up to . There are 3304 km between State of Washington and Hamilton, Ontario.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Washington to Hamilton 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 State of Washington to Hamilton, Ontario?

    Currently, January is the cheapest month in which you can book a flight from State of Washington to Hamilton, Ontario (average of C$ 186). Flying from State of Washington to Hamilton, Ontario in December is currently the most expensive (average of C$ 271). 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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Yes! Cheapflights helps users easily find flights from Washington to Hamilton with no change fees.

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Yes, Cheapflights offers price alerts on Washington to Hamilton flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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