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Cheap flights from Washington to Hamilton, ON from C$ 170

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 22/2. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YHM
29 Nov — 6 Dec1
1 adult
1 adult, Economy, 0 bags

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 30 October 2025.

Round-trip from

C$ 412

One-way from

C$ 170

Popular in

June

Cheapest in

January

Average price

C$ 617
WestJet
  • WestJet
  • 15/1-18/1
  • 2 total stops
  • 42h 22m total
  • Washington to Hamilton
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WestJet
  • WestJet
  • 22/2
  • 1 total stop
  • 23h 06m total
  • Washington to Hamilton
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (C$ 129 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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Find flight deals from Washington to Hamilton

Enter your travel dates to find the best prices.

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 30 October 2025.

Sat 29/115:50 a.m.SEA - YHM
1 stop10h 10mMultiple Airlines
Sat 6/128:15 a.m.YHM - SEA
1 stop9h 16mMultiple Airlines
Deal found 30/10C$ 492
Thu 4/1210:55 p.m.SEA - YHM
1 stop17h 05mMultiple Airlines
Sun 7/128:15 a.m.YHM - SEA
1 stop15h 35mMultiple Airlines
Deal found 30/10C$ 796
Sat 6/1211:55 a.m.SEA - YHM
2 stops26h 22mWestJet
Thu 11/126:10 p.m.YHM - SEA
2 stops19h 12mWestJet
Deal found 30/10C$ 802
Wed 3/123:15 p.m.SEA - YHM
1 stop23h 02mWestJet
Wed 10/126:10 p.m.YHM - SEA
1 stop23h 10mWestJet
Deal found 30/10C$ 815
Sat 6/1211:55 a.m.SEA - YHM
2 stops26h 22mWestJet
Sun 14/126:10 p.m.YHM - SEA
2 stops19h 12mWestJet
Deal found 30/10C$ 818
Fri 28/118:12 a.m.SEA - YHM
1 stop12h 35mMultiple Airlines
Sat 29/118:15 a.m.YHM - SEA
1 stop13h 31mMultiple Airlines
Deal found 29/10C$ 825
Wed 19/1110:55 p.m.SEA - YHM
1 stop17h 05mMultiple Airlines
Sun 30/118:15 a.m.YHM - SEA
1 stop11h 31mMultiple Airlines
Deal found 29/10C$ 829
Sun 7/123:10 p.m.SEA - YHM
1 stop23h 07mWestJet
Mon 15/126:10 p.m.YHM - SEA
1 stop23h 10mWestJet
Deal found 30/10C$ 855
Sat 6/1211:55 a.m.SEA - YHM
2 stops26h 22mWestJet
Mon 8/126:10 p.m.YHM - SEA
1 stop23h 10mWestJet
Deal found 30/10C$ 856
Fri 28/118:12 a.m.SEA - YHM
1 stop12h 35mMultiple Airlines
Mon 1/128:15 a.m.YHM - SEA
1 stop13h 31mMultiple Airlines
Deal found 28/10C$ 859
Sun 23/118:12 a.m.SEA - YHM
1 stop12h 35mMultiple Airlines
Sat 29/118:15 a.m.YHM - SEA
1 stop13h 31mMultiple Airlines
Deal found 29/10C$ 860
Sun 14/121:10 p.m.GEG - YHM
2 stops25h 07mWestJet
Sun 21/126:10 p.m.YHM - GEG
2 stops27h 33mWestJet
Deal found 30/10C$ 2,645

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 30 October 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

Tue 14/4

3:10 p.m.-5:16 p.m.

1 stop23h 06m

Hamilton

Sun 19/4

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

1 stop23h 09m

C$ 412

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Thu 15/1

3:10 p.m.-1:22 p.m.

1 stop19h 12m

Hamilton

Mon 19/1

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

1 stop23h 10m

C$ 412

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Tue 17/2

3:10 p.m.-5:16 p.m.

1 stop23h 06m

Hamilton

Thu 26/2

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

1 stop23h 09m

C$ 412

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Thu 8/1

3:10 p.m.-1:22 p.m.

1 stop19h 12m

Hamilton

Sun 11/1

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

1 stop23h 10m

C$ 412

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Thu 15/1

3:10 p.m.-1:22 p.m.

1 stop19h 12m

Hamilton

Sun 18/1

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

1 stop23h 10m

C$ 412

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Sat 29/11

5:50 a.m.-7:00 p.m.

1 stop10h 10m

Hamilton

Sat 6/12

8:15 a.m.-2:31 p.m.

1 stop9h 16m

C$ 492

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Wed 18/3

3:10 p.m.-5:16 p.m.

1 stop23h 06m

Hamilton

Sat 21/3

8:15 a.m.-10:21 a.m.

2 stops29h 06m

C$ 578

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Thu 9/4

3:10 p.m.-1:21 p.m.

1 stop19h 11m

Hamilton

Sun 12/4

6:10 p.m.-10:21 a.m.

2 stops19h 11m

C$ 578

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Sun 11/1

8:32 a.m.-10:18 p.m.

1 stop10h 46m

Hamilton

Sat 17/1

8:15 a.m.-2:34 p.m.

1 stop9h 19m

C$ 718

SpokaneHamilton

GEG - YHM

GEGYHM

Spokane

Sun 14/12

1:10 p.m.-5:17 p.m.

2 stops25h 07m

Hamilton

Sun 21/12

6:10 p.m.-6:43 p.m.

2 stops27h 33m

C$ 2,645

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/10

Showing 1-10 of 20 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, March is the cheapest month in which you can book a flight from State of Washington to Hamilton, Ontario (average of C$ 169). Flying from State of Washington to Hamilton, Ontario in May is currently the most expensive (average of C$ 378). 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 23h 06m. 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, March is the cheapest month in which you can book a flight from State of Washington to Hamilton, Ontario (average of C$ 169). Flying from State of Washington to Hamilton, Ontario in May is currently the most expensive (average of C$ 378). 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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Alternative routes for Washington to Hamilton

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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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