Dulles Intl

$119+ Cheap flights from Toronto (YTO) to Dulles Intl (IAD)

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 8/6. Fares are subject to change and may not be available on all flights or dates of travel.
YTO — IAD
Jul 4 — Jul 111
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Cheapflights Tip: The best prices from Toronto to Washington, D.C. Dulles Intl are usually found in January or April, booked 73 days in advance, depart on a Wednesday or Saturday and return on a Friday

Cheap flight deals from Toronto to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Toronto (YTO) to Dulles Intl (IAD). 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 June 29, 2025.

Round-trip from

$181
(Air Canada)

One-way from

$119
(KAYAK)

Popular in

October

Cheapest in

January

Average price

$291

Good round-trip deal

$180 or less

Good one-way deal

$134 or less
From Toronto (YTO) to Washington, D.C. Dulles Intl
One-way flight from Toronto (YTO) to Washington, D.C. Dulles Intl
Highest demand for flights based on searches. 9% potential increase in price ($28 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
Average for round-trip flights in June 2025
Price to beat on a round-trip flight from Toronto (YTO) to Washington, D.C. Dulles Intl.
Price to beat on a one-way flight from Toronto (YTO) to Washington, D.C. Dulles Intl.

Find flight deals from Toronto to Dulles Intl

Cheapest flights from Toronto to Dulles Intl
Explore the most affordable flight options available from Toronto to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 29, 2025.

This Air Canada deal was found by Cheapflights users on 6/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/74:00 pmYYZ - IAD
1 stop5h 05mAir Canada
Wed 10/82:25 pmIAD - YYZ
Nonstop1h 32mAir Canada
Deal found 6/27$181
This Trip.com deal was found by Cheapflights users on 6/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/231:25 pmYTZ - IAD
Nonstop1h 31mPorter Airlines
Sun 8/311:35 amIAD - YTZ
Nonstop1h 33mPorter Airlines
Deal found 6/27$186
This United Airlines deal was found by Cheapflights users on 6/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1412:45 pmYYZ - IAD
Nonstop1h 34mUnited Airlines
Tue 8/193:41 pmIAD - YYZ
Nonstop1h 38mUnited Airlines
Deal found 6/26$193
This SmartFares deal was found by Cheapflights users on 6/26. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/108:45 amYTZ - IAD
Nonstop1h 31mAir Transat
Wed 8/134:10 pmIAD - YTZ
Nonstop1h 33mAir Transat
Deal found 6/26$208
This Trip.com deal was found by Cheapflights users on 6/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/18:45 amYTZ - IAD
Nonstop1h 31mMultiple Airlines
Tue 8/54:10 pmIAD - YTZ
Nonstop1h 33mMultiple Airlines
Deal found 6/28$239
This Delta deal was found by Cheapflights users on 6/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/193:55 pmYYZ - IAD
1 stop7h 00mDelta
Sun 7/206:00 amIAD - YYZ
1 stop8h 45mDelta
Deal found 6/28$252

Cheapflights Fare Finder

Customize your flight search to find flights from Toronto to Dulles Intl 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 June 29, 2025.
Use the filters below to find and compare flights from Toronto to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Toronto

Fly to

Dulles Intl

Route

Depart

Return

Price

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Tue 10/7

4:00 pm-9:05 pm

1 stop5h 05m

Washington, D.C. Dulles Intl

Wed 10/8

2:25 pm-3:57 pm

Nonstop1h 32m

$181

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Wed 7/23

1:25 pm-2:56 pm

Nonstop1h 31m

Washington, D.C. Dulles Intl

Sun 8/3

11:35 am-1:08 pm

Nonstop1h 33m

$186

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Thu 8/14

12:45 pm-2:19 pm

Nonstop1h 34m

Washington, D.C. Dulles Intl

Tue 8/19

3:41 pm-5:19 pm

Nonstop1h 38m

$193

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Sun 8/10

8:45 am-10:16 am

Nonstop1h 31m

Washington, D.C. Dulles Intl

Wed 8/13

4:10 pm-5:43 pm

Nonstop1h 33m

$208

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Fri 8/1

8:45 am-10:16 am

Nonstop1h 31m

Washington, D.C. Dulles Intl

Tue 8/5

4:10 pm-5:43 pm

Nonstop1h 33m

$239

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Sat 7/19

3:55 pm-10:55 pm

1 stop7h 00m

Washington, D.C. Dulles Intl

Sun 7/20

6:00 am-2:45 pm

1 stop8h 45m

$252

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Wed 8/6

1:25 pm-2:56 pm

Nonstop1h 31m

$119

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Thu 8/7

8:10 am-9:37 am

Nonstop1h 27m

$123

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Mon 10/20

1:35 pm-3:06 pm

Nonstop1h 31m

$134

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Tue 7/22

7:00 am-4:10 pm

1 stop9h 10m

$139

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/28

Showing 1-10 of 15 results
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The best insider tips for Toronto to Washington, D.C. Dulles Intl Airport flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Toronto to Washington, D.C. Dulles Intl Airport trip
Airlines
United Airlines

Economy Plus provides extra legroom and priority boarding, enhancing comfort and convenience.


United Club access includes healthy snacks and comfortable seating, ideal for business travelers.

Air Canada

Economy Latitude offers priority check-in and two checked bags, ideal for efficient travel.


Preferred Seats offer up to four inches extra space, perfect for added comfort on short flights.

Read more about Air Canadaby Jessica Macdonald
Airports
YYZ

Security lines at YYZ are efficient, moving quickly even during peak times. Arrive early to clear US customs before boarding.

Read more about YYZby Kaitlyn McInnis
YTZ

YTZ offers fast security with rarely long lines. Arrive with time to spare but expect a quick process.

Read more about YTZby Kaitlyn McInnis
IAD

From IAD, the Silver Line Metro reaches downtown in under 40 minutes, offering a cheap and convenient travel option.

Read more about IADby Ramsey Qubein
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on United Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Jessica Macdonald

Jessica Macdonald

Expert on Air Canada

Jessica Macdonald

Jessica Macdonald

Currently based in Scotland after living in South Africa and the United States, Jessica has been writing travel and aviation content for more than 10 years. She regularly contributes to Travel + Leisure and TripSavvy, and has had work published by Condé Nast Traveller and The Independent. She has traveled to more than 50 countries across six continents.

Read more
Kaitlyn McInnis

Kaitlyn McInnis

Expert on YYZ and YTZ

Kaitlyn McInnis

Kaitlyn McInnis

Kaitlyn is a guidebook author and travel writer splitting her time between Atlantic Canada and Istanbul, Türkiye. She has visited over fifty countries and all seven continents, so she is very familiar with many hotels, airports and airlines around the globe. But her favorite type of vacation is sunbathing by the sea with a good book in hand.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on IAD

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Best time to book a flight from Toronto to Dulles Intl

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

How far ahead should I book a flight from Toronto to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Toronto to Dulles Intl. Price data was last updated on June 27, 2025.

To ensure you get the cheapest price possible for a flight from Toronto to Washington, D.C. Dulles Intl Airport, you should look to book at least 73 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, August is the cheapest month in which you can book a flight from Toronto to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Toronto to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $346). 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.

What is the cheapest time of day to fly from YTO to IAD?

Find hourly flight availability from Toronto to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 29, 2025.

A simple way to save on the total cost of your ticket is to fly from Toronto to Washington, D.C. Dulles Intl Airport in the afternoon. If you’re flexible enough to do this you can expect to save up to 46% on your trip compared to booking a flight in the evening.

What is the cheapest day to fly from Toronto to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Toronto to Dulles Intl. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Toronto to Washington, D.C. Dulles Intl Airport flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Toronto to Washington, D.C. Dulles Intl Airport

Explore weekly flight availability from Toronto to Dulles Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 29, 2025.

The most flights from YTO to IAD are scheduled on a Monday (22 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (16 on average).

How much does it cost to fly round-trip from Toronto to Washington, D.C. Dulles Intl Airport?

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated June 29, 2025.
Get a feel of what it's like to fly with Porter Airlines, Delta, and Air Transat from Toronto to Washington, D.C. Dulles Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.2

Crew

8.7

Overall

8.0

Comfort

8.1

Entertainment

7.0

Food

7.6

Reviews

1 / 20
4.0
Okay

Mary,Jun 2025

FLL - YYZ

Fort Lauderdale staff was not helpful at all to try to accommodate my husband and myself to sit together. Also very surprised to get charged USD53 for each of our checked luggage, as when we booked the tickets online, the website indicated that our first checked luggage will be charged CAD50!! Very misleading!!!

Boarding

8.2

Crew

8.7

Overall

8.0

Comfort

8.1

Entertainment

7.0

Food

7.6

Reviews

1 / 20
4.0
Okay

Mary,Jun 2025

FLL - YYZ

Fort Lauderdale staff was not helpful at all to try to accommodate my husband and myself to sit together. Also very surprised to get charged USD53 for each of our checked luggage, as when we booked the tickets online, the website indicated that our first checked luggage will be charged CAD50!! Very misleading!!!
8.0
Very good

Boarding

8.2

Crew

8.7

Overall

8.0

Comfort

8.1

Entertainment

7.0

Food

7.6

Reviews

1 / 20
4.0
Okay

Mary,Jun 2025

FLL - YYZ

Fort Lauderdale staff was not helpful at all to try to accommodate my husband and myself to sit together. Also very surprised to get charged USD53 for each of our checked luggage, as when we booked the tickets online, the website indicated that our first checked luggage will be charged CAD50!! Very misleading!!!

Boarding

8.2

Crew

8.7

Overall

8.0

Comfort

8.1

Entertainment

7.0

Food

7.6

Reviews

1 / 20
4.0
Okay

Mary,Jun 2025

FLL - YYZ

Fort Lauderdale staff was not helpful at all to try to accommodate my husband and myself to sit together. Also very surprised to get charged USD53 for each of our checked luggage, as when we booked the tickets online, the website indicated that our first checked luggage will be charged CAD50!! Very misleading!!!

Boarding

8.2

Crew

8.7

Overall

8.0

Comfort

8.1

Entertainment

7.0

Food

7.6

Reviews

1 / 20
4.0
Okay

Mary,Jun 2025

FLL - YYZ

Fort Lauderdale staff was not helpful at all to try to accommodate my husband and myself to sit together. Also very surprised to get charged USD53 for each of our checked luggage, as when we booked the tickets online, the website indicated that our first checked luggage will be charged CAD50!! Very misleading!!!

Boarding

8.2

Crew

8.7

Overall

8.0

Comfort

8.1

Entertainment

7.0

Food

7.6

Reviews

1 / 20
4.0
Okay

Mary,Jun 2025

FLL - YYZ

Fort Lauderdale staff was not helpful at all to try to accommodate my husband and myself to sit together. Also very surprised to get charged USD53 for each of our checked luggage, as when we booked the tickets online, the website indicated that our first checked luggage will be charged CAD50!! Very misleading!!!

Related info for your journey

Find useful and relevant information for your journey from Toronto to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What are the cheapest airlines flying from Toronto to Washington, D.C. Dulles Intl Airport round-trip?

    Currently priced at $181, Air Canada will fly you from Toronto to Washington, D.C. Dulles Intl Airport and back. In addition to Air Canada, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Porter Airlines and United Airlines - these airlines can fly you to your destination from $186 and $193, respectively. Air Canada is 32% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Toronto to Washington, D.C. Dulles Intl Airport one-way?

    For one-way options, check prices for Porter Airlines. According to our data, you can fly for as low as $119. Users have also found prices from $123 and $134 on Air Canada and Air Transat, respectively.

  • What are the most reliable airlines from Toronto to Washington, D.C. Dulles Intl Airport?

    No one likes to see their flight delayed. When booking a flight from Toronto to Washington, D.C. Dulles Intl Airport consider choosing ANA (94%), Avianca (88%) or Jazz (85%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Toronto to Washington, D.C. Dulles Intl Airport?

    While on average a flight from Toronto to Washington, D.C. Dulles Intl Airport is generally $311, our data shows the cheapest flight currently is $117. When looking at the most popular route, (Toronto Pearson Intl - Washington, D.C. Dulles Intl), you can expect to pay $177 for that flight.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Toronto to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Toronto to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $346). 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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Top 3 airlines flying from Toronto to Dulles Intl

Discover the top 3 airlines that operate flights from Toronto to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$168Average$271FlexibilityNo cancel feeOn-time52%
Air CanadaCheapest$175Average$280FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$184Average$264FlexibilityNo cancel feeOn-time69%

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