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Cheap flights from Washington to Hamilton, ON from C$ 172

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 25/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YHM
14 Jan — 21 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap 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 15 December 2025.

Wed 31/123:10 p.m.SEA - YHM
1 stop23h 07mWestJet
Wed 7/16:10 p.m.YHM - SEA
1 stop23h 10mWestJet
Deal found 13/12C$ 1,307
Tue 16/123:10 p.m.SEA - YHM
1 stop23h 07mWestJet
Tue 23/125:45 a.m.YHM - SEA
2 stops28h 35mWestJet
Deal found 13/12C$ 1,326
Tue 16/123:10 p.m.SEA - YHM
1 stop23h 07mWestJet
Mon 12/16:10 p.m.YHM - SEA
1 stop23h 10mWestJet
Deal found 13/12C$ 1,494
Wed 31/123:10 p.m.SEA - YHM
1 stop23h 07mWestJet
Sun 4/16:10 p.m.YHM - SEA
1 stop23h 10mWestJet
Deal found 13/12C$ 1,533
Thu 25/129:25 a.m.SEA - YHM
2 stops24h 57mWestJet
Sun 28/126:10 p.m.YHM - SEA
2 stops16h 10mWestJet
Deal found 13/12C$ 1,545
Sat 27/127:45 p.m.SEA - YHM
2 stops18h 32mWestJet
Sun 4/16:10 p.m.YHM - SEA
1 stop23h 10mWestJet
Deal found 12/12C$ 1,680
Wed 31/123:10 p.m.SEA - YHM
2 stops24h 50mMultiple Airlines
Sun 4/18:15 a.m.YHM - SEA
2 stops29h 07mMultiple Airlines
Deal found 13/12C$ 1,717
Sat 27/123:20 p.m.SEA - YHM
1 stop22h 57mWestJet
Tue 6/15:45 a.m.YHM - SEA
1 stop11h 35mWestJet
Deal found 14/12C$ 1,800
Wed 24/123:10 p.m.SEA - YHM
1 stop23h 07mWestJet
Wed 31/126:10 p.m.YHM - SEA
1 stop23h 10mWestJet
Deal found 13/12C$ 1,842
Wed 24/123:10 p.m.SEA - YHM
1 stop23h 07mMultiple Airlines
Tue 30/125:45 a.m.YHM - SEA
1 stop9h 38mMultiple Airlines
Deal found 14/12C$ 1,880
Tue 16/123:10 p.m.SEA - YHM
1 stop23h 07mWestJet
Thu 18/126:10 p.m.YHM - SEA
1 stop23h 10mWestJet
Deal found 14/12C$ 1,918

Find flight deals from Washington to Hamilton

Keep the following information in mind while searching for Washington to Hamilton flight deals. Data was last updated 15 December 2025.

Round-trip from

C$ 373

One-way from

C$ 172

Popular in

December

Cheapest in

November

Average price

C$ 761
WestJet
  • WestJet
  • 10/3-24/3
  • 2 total stops
  • 34h 35m total
  • Washington to Hamilton
Search Deals
WestJet
  • WestJet
  • 27/1
  • 1 total stop
  • 23h 07m total
  • Washington to Hamilton
Search Deals
High demand for flights, 6% potential price rise
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 29 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 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 15 December 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 10/3

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

1 stop23h 06m

Hamilton

Tue 24/3

5:50 a.m.-2:19 p.m.

1 stop11h 29m

C$ 373

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Tue 27/1

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

1 stop23h 07m

Hamilton

Tue 3/2

5:50 a.m.-2:19 p.m.

1 stop11h 29m

C$ 392

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Thu 8/1

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

1 stop19h 12m

Hamilton

Mon 12/1

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

1 stop23h 10m

C$ 402

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Mon 4/5

7:05 a.m.-12:40 a.m.

1 stop14h 35m

Hamilton

Mon 11/5

6:00 a.m.-8:28 p.m.

1 stop17h 28m

C$ 406

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Wed 15/4

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

1 stop23h 06m

Hamilton

Fri 8/5

6:00 a.m.-8:28 p.m.

1 stop17h 28m

C$ 406

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Thu 9/4

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

1 stop19h 11m

Hamilton

Thu 16/4

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

1 stop23h 09m

C$ 408

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Wed 8/4

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

1 stop23h 06m

Hamilton

Sun 12/4

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

1 stop23h 09m

C$ 408

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Sat 10/1

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

1 stop22h 57m

Hamilton

Wed 14/1

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

1 stop23h 10m

C$ 614

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Fri 9/1

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

1 stop10h 46m

Hamilton

Sun 11/1

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

1 stop9h 19m

C$ 675

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Thu 8/1

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

1 stop10h 46m

Hamilton

Sat 10/1

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

1 stop9h 19m

C$ 680

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/12

Showing 1-10 of 23 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$ 167). Flying from State of Washington to Hamilton, Ontario in May is currently the most expensive (average of C$ 375). 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$ 167). Flying from State of Washington to Hamilton, Ontario in May is currently the most expensive (average of C$ 375). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Washington to Hamilton

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How does Cheapflights help users find flights from Washington to Hamilton?

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Why should you use Cheapflights to find cheap flight tickets from Washington to Hamilton?

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Yes! Cheapflights helps users easily find flights from Washington to Hamilton with no change fees.

Can Cheapflights notify me if prices for flights from Washington to Hamilton become cheaper?

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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