HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Hamilton

$223+ Cheap flights from Dulles Intl (IAD) to Hamilton, ON (YHM)

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 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — YHM
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Dulles Intl to Hamilton with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Dulles Intl to Hamilton

Cheapest flights from Dulles Intl to Hamilton
Explore the most affordable flight options available from Dulles Intl to Hamilton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 27, 2026.

This Mytrip deal was found by Cheapflights users on 1/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/245:40 pm
IAD
-
YHM
3 stops21h 20m
Multiple Airlines
Fri 2/277:00 am
YHM
-
IAD
2 stops29h 12m
Multiple Airlines
Deal found 1/26$610
This Booking.com deal was found by Cheapflights users on 1/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/139:55 am
IAD
-
YHM
2 stops13h 51m
Multiple Airlines
Fri 3/202:35 pm
YHM
-
IAD
2 stops30h 19m
Multiple Airlines
Deal found 1/27$929
This Booking.com deal was found by Cheapflights users on 1/25. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/199:45 am
IAD
-
YHM
2 stops26h 59m
Multiple Airlines
Sun 2/2211:40 am
YHM
-
IAD
2 stops9h 14m
Multiple Airlines
Deal found 1/25$1,029
This WestJet deal was found by Cheapflights users on 1/25. 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.
Fri 6/197:00 pm
IAD
-
YHM
1 stop22h 15m
WestJet
Sun 6/286:10 pm
YHM
-
IAD
1 stop23h 40m
WestJet
Deal found 1/25$1,101

Find flight deals from Dulles Intl to Hamilton

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Hamilton (YHM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$610
(Mytrip)

One-way from

$223
(oojo)

Popular in

November

Cheapest in

June

Average price

$283
Provider with most accurate pricing for Washington, D.C. (WAS)-Toronto (YTO) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Toronto (YTO) flights.
Search Deals
From Washington, D.C. Dulles Intl to Hamilton
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Hamilton
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($18 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl 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 2,558,603 searches. Data last updated January 27, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Hamilton that are best for you.

Fly from

Dulles Intl

Fly to

Hamilton

Route

Depart

Return

Price

Washington, D.C.Hamilton

IAD - YHM

IADYHM

Washington, D.C. Dulles Intl

Tue 2/24

5:40 pm-3:00 pm

3 stops21h 20m

Hamilton

Fri 2/27

7:00 am-12:12 pm

2 stops29h 12m

$610

Washington, D.C.Hamilton

IAD - YHM

IADYHM

Washington, D.C. Dulles Intl

Fri 3/13

9:55 am-11:46 pm

2 stops13h 51m

Hamilton

Fri 3/20

2:35 pm-8:54 pm

2 stops30h 19m

$929

Washington, D.C.Hamilton

IAD - YHM

IADYHM

Washington, D.C. Dulles Intl

Thu 2/19

9:45 am-12:44 pm

2 stops26h 59m

Hamilton

Sun 2/22

11:40 am-8:54 pm

2 stops9h 14m

$1,029

Washington, D.C.Hamilton

IAD - YHM

IADYHM

Washington, D.C. Dulles Intl

Fri 6/19

7:00 pm-5:15 pm

1 stop22h 15m

Hamilton

Sun 6/28

6:10 pm-5:50 pm

1 stop23h 40m

$1,101

Washington, D.C.Hamilton

IAD - YHM

IADYHM

Washington, D.C. Dulles Intl

Mon 5/18

7:00 pm-5:10 pm

1 stop22h 10m

$223

Washington, D.C.Hamilton

IAD - YHM

IADYHM

Washington, D.C. Dulles Intl

Sun 2/8

5:40 pm-3:00 pm

3 stops21h 20m

$229

Washington, D.C.Hamilton

IAD - YHM

IADYHM

Washington, D.C. Dulles Intl

Tue 2/17

5:40 pm-3:00 pm

3 stops21h 20m

$247

Washington, D.C.Hamilton

IAD - YHM

IADYHM

Washington, D.C. Dulles Intl

Mon 5/25

7:00 pm-5:15 pm

1 stop22h 15m

$271

Washington, D.C.Hamilton

IAD - YHM

IADYHM

Washington, D.C. Dulles Intl

Fri 5/15

7:00 pm-5:15 pm

1 stop22h 15m

$305

Washington, D.C.Hamilton

IAD - YHM

IADYHM

Washington, D.C. Dulles Intl

Thu 2/5

5:40 pm-2:20 pm

3 stops20h 40m

$348

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 12 results
1
2

Best time to book a flight from Dulles Intl to Hamilton

Have a flexible travel schedule? Discover the best time to fly to Hamilton from Dulles Intl 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, D.C. Dulles Intl Airport to Hamilton

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Hamilton, Ontario?

Currently, March is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Hamilton, Ontario (average of $98). Flying from Washington, D.C. Dulles Intl Airport to Hamilton, Ontario in January is currently the most expensive (average of $193). 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 Dulles Intl 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, D.C. Dulles Intl?

    Located just 6.8 mi from the city center, Hamilton is the airport most travelers will use when flying to Hamilton from Washington, D.C. Dulles Intl. Booking flights from Washington, D.C. Dulles Intl to Hamilton (YHM) should be relatively easy as there are 0 daily inbound flights from Washington, D.C. Dulles Intl from 0 different airlines.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to Hamilton, Ontario?

    A quick flight from Washington, D.C. Dulles Intl Airport to Hamilton, Ontario can take about 22h 15m. WestJet provides one of the quickest options available for as low as $1,101. Airlines will cover a distance of 319 mi.

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

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

  • How can I find direct flights from Dulles Intl to Hamilton?

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Hamilton, Ontario?

    Currently, March is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Hamilton, Ontario (average of $98). Flying from Washington, D.C. Dulles Intl Airport to Hamilton, Ontario in January is currently the most expensive (average of $193). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Dulles Intl to Hamilton

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Pierre Elliott Trudeau Intl flights
Reagan-National to Pearson Intl flights
Reagan-National to Pierre Elliott Trudeau Intl flights
Dulles Intl to Pearson Intl flights
Dulles Intl to Toronto Island flights
Baltimore to Pearson Intl flights
Baltimore to Pierre Elliott Trudeau Intl flights
Reagan-National to Toronto Island flights
Reagan-National to Ottawa flights
Dulles Intl to Ottawa flights
Baltimore to Toronto Island flights
Baltimore to Ottawa flights
Reagan-National to Thunder Bay flights
Dulles Intl to Thunder Bay flights
Baltimore to Thunder Bay flights
Dulles Intl to Sudbury flights
Reagan-National to London flights
Dulles Intl to London flights
Baltimore to London flights
Dulles Intl to Timmins flights
Baltimore to North Bay flights
Reagan-National to Hamilton flights
Dulles Intl to Sault Ste Marie flights
Baltimore to Sault Ste Marie flights
Reagan-National to Windsor flights
Baltimore to Windsor flights
Dulles Intl to Kingston flights
Reagan-National to Kingston flights
Baltimore to Kingston flights
Reagan-National to Sault Ste Marie flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.