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Cheap flights from Washington to Hamilton, ON from C$ 255

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 6/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YHM
22 Apr — 29 Apr1
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 23 March 2026.

Mon 27/47:35 p.m.
SEA
-
YHM
1 stop18h 40m
WestJet
Thu 30/46:10 p.m.
YHM
-
SEA
1 stop18h 30m
WestJet
Deal found 22/3C$ 539
Fri 22/510:30 a.m.
SEA
-
YHM
1 stop27h 45m
WestJet
Mon 25/56:10 p.m.
YHM
-
SEA
1 stop18h 30m
WestJet
Deal found 21/3C$ 541
Sat 20/67:00 a.m.
SEA
-
YHM
1 stop7h 15m
WestJet
Thu 25/66:10 p.m.
YHM
-
SEA
1 stop18h 30m
WestJet
Deal found 22/3C$ 558
Tue 21/43:10 p.m.
SEA
-
YHM
1 stop23h 06m
WestJet
Tue 28/46:10 p.m.
YHM
-
SEA
1 stop27h 35m
WestJet
Deal found 22/3C$ 572
Wed 29/47:35 p.m.
SEA
-
YHM
1 stop18h 40m
WestJet
Fri 1/56:10 p.m.
YHM
-
SEA
1 stop18h 30m
WestJet
Deal found 20/3C$ 573
Tue 5/57:35 p.m.
SEA
-
YHM
1 stop18h 40m
WestJet
Tue 12/56:10 p.m.
YHM
-
SEA
1 stop18h 30m
WestJet
Deal found 21/3C$ 580
Sat 25/43:20 p.m.
SEA
-
YHM
1 stop22h 55m
WestJet
Sat 2/56:10 p.m.
YHM
-
SEA
1 stop18h 30m
WestJet
Deal found 20/3C$ 584
Mon 11/57:35 p.m.
SEA
-
YHM
1 stop18h 40m
WestJet
Wed 13/56:10 p.m.
YHM
-
SEA
1 stop18h 30m
WestJet
Deal found 20/3C$ 594
Sat 2/57:35 p.m.
SEA
-
YHM
1 stop18h 40m
WestJet
Sat 9/56:10 p.m.
YHM
-
SEA
1 stop18h 30m
WestJet
Deal found 18/3C$ 602
Wed 15/46:00 a.m.
GEG
-
YHM
2 stops10h 00m
Multiple Airlines
Fri 17/48:15 a.m.
YHM
-
GEG
2 stops13h 46m
Multiple Airlines
Deal found 21/3C$ 1,088
Thu 9/46:00 a.m.
GEG
-
YHM
2 stops13h 18m
Multiple Airlines
Wed 15/48:15 a.m.
YHM
-
GEG
2 stops16h 09m
Multiple Airlines
Deal found 18/3C$ 1,202
Wed 22/45:00 a.m.
GEG
-
YHM
2 stops11h 00m
Multiple Airlines
Mon 27/48:15 a.m.
YHM
-
GEG
2 stops10h 39m
Multiple Airlines
Deal found 20/3C$ 1,248

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 23 March 2026.

Round-trip from

C$ 539

One-way from

C$ 255

Popular in

June

Cheapest in

January

Average price

C$ 549
WestJet
  • WestJet
  • 27/4-30/4
  • 2 total stops
  • 37h 10m total
  • Washington to Hamilton
Search Deals
WestJet
  • WestJet
  • 5/5
  • 1 total stop
  • 27h 45m total
  • Washington to Hamilton
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 114 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
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 23 March 2026.
Use the filters below to find and compare flights from Washington to Hamilton that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Wed 29/4

7:35 p.m.-5:15 p.m.

1 stop18h 40m

Hamilton

Fri 1/5

6:10 p.m.-9:40 a.m.

1 stop18h 30m

C$ 573

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Fri 22/5

10:30 a.m.-5:15 p.m.

1 stop27h 45m

Hamilton

Mon 25/5

6:10 p.m.-9:40 a.m.

1 stop18h 30m

C$ 594

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Mon 1/6

7:35 p.m.-5:15 p.m.

1 stop18h 40m

Hamilton

Mon 8/6

6:10 p.m.-9:40 a.m.

1 stop18h 30m

C$ 594

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Tue 9/6

10:30 a.m.-5:15 p.m.

1 stop27h 45m

Hamilton

Sat 13/6

7:00 a.m.-6:45 p.m.

2 stops14h 45m

C$ 735

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Tue 5/5

10:30 a.m.-11:13 p.m.

1 stop9h 43m

Hamilton

Tue 12/5

5:30 a.m.-2:20 p.m.

2 stops11h 50m

C$ 851
Quickest round-trip

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Sun 19/4

8:41 a.m.-7:00 p.m.

1 stop7h 19m

Hamilton

Sun 26/4

8:15 a.m.-2:47 p.m.

1 stop9h 32m

C$ 868

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Fri 22/5

10:30 a.m.-11:13 p.m.

1 stop9h 43m

Hamilton

Mon 25/5

7:00 a.m.-6:45 p.m.

2 stops14h 45m

C$ 874

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Fri 29/5

10:30 a.m.-11:13 p.m.

1 stop9h 43m

Hamilton

Sun 31/5

7:55 p.m.-9:40 a.m.

1 stop16h 45m

C$ 897

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Wed 24/6

7:00 a.m.-5:15 p.m.

1 stop7h 15m

Hamilton

Sun 28/6

6:10 p.m.-6:45 p.m.

1 stop27h 35m

C$ 899

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Thu 21/5

7:35 p.m.-5:15 p.m.

1 stop18h 40m

Hamilton

Wed 3/6

6:10 p.m.-6:45 p.m.

1 stop27h 35m

C$ 907

Flights are sorted by cheapest round-trip flights first.

Deals found on 22/3

Showing 1-10 of 32 resultsSorted by cheapest first
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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$ 181). Flying from State of Washington to Hamilton, Ontario in December is currently the most expensive (average of C$ 385). 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 18h 40m. 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$ 181). Flying from State of Washington to Hamilton, Ontario in December is currently the most expensive (average of C$ 385). 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

See prices for flight routes from nearby airports that may be better suited for you.
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Fly with Cheapflights

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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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Can Cheapflights find flights from Washington to Hamilton with no change fees?

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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