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$97+ Cheap flights from Dulles Intl (IAD) to Toronto (YTO)

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 7/5. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — YTO
Jul 9 — Jul 161
Thu 7/9
Thu 7/16
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Toronto are usually found in May or January, booked 48 days in advance, depart on a Thursday or Friday and return on a Friday

Cheap flight deals from Dulles Intl to Toronto

Cheapest flights from Dulles Intl to Toronto
Explore the most affordable flight options available from Dulles Intl to Toronto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 9, 2026.

This Super.com deal was found by Cheapflights users on 6/4. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/274:00 pm
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Tue 6/309:15 am
YTZ
-
IAD
Nonstop1h 31m
Porter Airlines
Deal found 6/4$204
This Super.com deal was found by Cheapflights users on 6/8. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/93:55 pm
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Thu 7/168:55 am
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Deal found 6/8$206
This Kiwi.com deal was found by Cheapflights users on 6/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/711:05 am
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Tue 7/148:55 am
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Deal found 6/7$208
This Kiwi.com deal was found by Cheapflights users on 6/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/94:00 pm
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Mon 7/138:55 am
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Deal found 6/7$209
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/294:00 pm
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Tue 6/301:45 pm
YTZ
-
IAD
Nonstop1h 31m
Porter Airlines
Deal found 6/8$210
This Kiwi.com deal was found by Cheapflights users on 6/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/104:00 pm
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Sun 7/128:55 am
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Deal found 6/7$211
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2211:25 am
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Fri 8/281:40 pm
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Deal found 6/8$212
This Justfly.com deal was found by Cheapflights users on 6/8. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/73:50 pm
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Sat 8/151:40 pm
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Deal found 6/8$213
This Kissandfly.com deal was found by Cheapflights users on 6/5. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/511:30 am
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Sat 7/111:45 pm
YTZ
-
IAD
Nonstop1h 31m
Porter Airlines
Deal found 6/5$214
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/233:50 pm
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Fri 8/289:15 am
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Deal found 6/8$215
This Kiwi.com deal was found by Cheapflights users on 6/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/2811:30 am
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Sun 7/129:15 am
YTZ
-
IAD
Nonstop1h 31m
Porter Airlines
Deal found 6/5$216
This Kissandfly.com deal was found by Cheapflights users on 6/6. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/163:55 pm
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Mon 7/201:40 pm
YTZ
-
IAD
Nonstop1h 31m
Porter Airlines
Deal found 6/6$217

Find flight deals from Dulles Intl to Toronto

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Toronto (YTO). 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 9, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$204
(Super.com)

One-way from

$97
(Super.com)

Popular in

February

Cheapest in

May

Average price

$277

Good round-trip deal

$239 or less

Good one-way deal

$103 or less
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Toronto (YTO) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Toronto (YTO) flights.
Search Deals
From Washington, D.C. Dulles Intl to Toronto (YTO)
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Toronto (YTO)
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($32 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Toronto (YTO).
Search Deals
Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Toronto (YTO).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Toronto 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 9, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Toronto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Mon 7/20

4:00 pm-5:30 pm

Nonstop1h 30m

Toronto Island

Thu 7/23

9:15 am-10:46 am

Nonstop1h 31m

$290

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 7/16

4:00 pm-5:30 pm

Nonstop1h 30m

Toronto Island

Sat 7/18

9:15 am-10:46 am

Nonstop1h 31m

$290

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Sat 7/4

6:00 am-11:19 am

1 stop5h 19m

Toronto Pearson Intl

Fri 7/10

6:04 am-11:49 am

1 stop5h 45m

$389

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Fri 7/3

5:29 pm-11:02 pm

1 stop5h 33m

Toronto Pearson Intl

Sat 7/11

4:10 pm-11:13 pm

1 stop7h 03m

$389

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Fri 7/3

5:29 pm-11:02 pm

1 stop5h 33m

Toronto Pearson Intl

Tue 7/7

12:09 pm-4:41 pm

1 stop4h 32m

$389

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Mon 10/12

12:43 pm-2:19 pm

Nonstop1h 36m

Toronto Pearson Intl

Mon 10/19

9:00 am-3:00 pm

1 stop6h 00m

$400

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Sun 9/20

5:08 pm-10:59 pm

1 stop5h 51m

Toronto Pearson Intl

Fri 9/25

6:10 pm-11:14 pm

1 stop5h 04m

$405

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Sat 8/15

6:10 am-11:19 am

1 stop5h 09m

Toronto Pearson Intl

Wed 8/19

4:10 pm-11:26 pm

1 stop7h 16m

$405

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Sat 8/8

10:14 pm-11:54 pm

Nonstop1h 40m

Toronto Pearson Intl

Wed 8/12

9:00 am-3:01 pm

1 stop6h 01m

$421

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Fri 7/31

6:00 am-1:34 pm

1 stop7h 34m

Toronto Pearson Intl

Sun 8/2

4:10 pm-11:13 pm

1 stop7h 03m

$421

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/4

Showing 1-10 of 60 resultsSorted by cheapest first
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Compare providers for flights from Dulles Intl to Toronto

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to Toronto in June.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star
Trip.comPrice Accuracy1 starTrust Score*3 stars
BudgetAirPrice Accuracy2 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
GotogatePrice Accuracy2 starsTrust Score*3 stars
Super.comPrice Accuracy-Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Toronto flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Toronto flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Toronto flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Toronto flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Toronto flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Dulles Intl to Toronto

Have a flexible travel schedule? Discover the best time to fly to Toronto 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 Toronto

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

Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Toronto (average of $54). Flying from Washington, D.C. Dulles Intl Airport to Toronto in February is currently the most expensive (average of $179). 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 IAD to YTO?

Find hourly flight availability from Dulles Intl to Toronto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 9, 2026.

It’s typically best to fly out from Washington, D.C. Dulles Intl Airport to Toronto at noon. Doing so could potentially save you 19% on the flight price compared to flying in the morning, which is usually more expensive.

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

Explore weekly flight availability from Dulles Intl to Toronto. 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 9, 2026.

The most flights from IAD to YTO are scheduled on a Monday (25 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (18 on average).

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

How often are flights from Washington, D.C. to Toronto delayed?

About 15% of weekly flights between Washington, D.C. and Toronto have experienced delays in the past year, with the average delay time being 124 minutes.

What is the most punctual flight time for Washington, D.C. to Toronto flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Saturday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Washington, D.C. to Toronto flights?

Over the last year, United Airlines have had the lowest number of delays on this route, with just 13% of flights being delayed.

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

Booking 78 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. Dulles Intl Airport to Toronto. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Toronto. Price data was last updated on June 8, 2026.

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

The best insider tips for Washington, D.C. Dulles Intl Airport to Toronto flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. Dulles Intl Airport to Toronto trip
Our travel experts
Daniel Scheffler

Daniel Scheffler

Expert on Porter Airlines

Daniel Scheffler is a travel writer, podcaster, and producer. Born in Africa, bred in Europe and now living in America he has traveled to 140 countries (and all 50 U.S. states). Plus he has stayed at over 2500 hotels across the globe. His original shows Everywhere and Without Maps (available on Spotify) showcase his beliefs, travel is about humanity and sharing that beauty. And thus it reminds you that you shouldn’t believe everything you think.

Read more
Jessica Macdonald

Jessica Macdonald

Expert on Air Canada

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
Harriet Baskas

Harriet Baskas

Expert on United Airlines

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
Kaitlyn McInnis

Kaitlyn McInnis

Expert on YYZ and YTZ

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

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

Reviews of airlines servicing Toronto

Get insights into the airlines that provide service to Toronto. 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 Toronto. Reviews last updated June 9, 2026.
See what other customers who have flown with Porter Airlines,Air Transat, andUnited Airlines from Washington, D.C. Dulles Intl Airport to Toronto have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
438 reviews

Overall

8.0

Boarding

8.2

Food

7.6

Crew

8.6

Entertainment

6.9

Comfort

8.0

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
Porter Airlines
8.0
Very good
438 reviews
Porter Airlines
8.0
Very good
438 reviews

Overall

8.0

Boarding

8.2

Food

7.6

Crew

8.6

Entertainment

6.9

Comfort

8.0

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
Air Transat
7.8
Good
554 reviews
Porter Airlines
8.0
Very good
438 reviews

Overall

8.0

Boarding

8.2

Food

7.6

Crew

8.6

Entertainment

6.9

Comfort

8.0

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
United Airlines
7.4
Good
9,800 reviews
Porter Airlines
8.0
Very good
438 reviews

Overall

8.0

Boarding

8.2

Food

7.6

Crew

8.6

Entertainment

6.9

Comfort

8.0

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
Air Canada
7.1
Good
11,151 reviews
Porter Airlines
8.0
Very good
438 reviews

Overall

8.0

Boarding

8.2

Food

7.6

Crew

8.6

Entertainment

6.9

Comfort

8.0

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Toronto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    A quick flight from Washington, D.C. Dulles Intl Airport to Toronto can take about 1h 30m. Porter Airlines provides one of the quickest options available for as low as $290. Airlines will cover a distance of 339 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Toronto round-trip?

    Our cheapest airline available from Washington, D.C. Dulles Intl Airport to Toronto is Porter Airlines. Our recent data shows that you can find tickets from as low as $54 on this airline. Additional options worth looking into are Delta and Air Canada, starting at $106 and $187 round-trip. Users have found that Porter Airlines is 81% cheaper than the other options available to this destination.

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

    $83 is the cheapest one-way deal found within the past few days, from Porter Airlines. You may also be able to find cheap deals on Air Canada and United Airlines, with prices starting from $96 and $106, respectively.

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

    The most popular route from Washington, D.C. Dulles Intl Airport to Toronto is Washington, D.C. Dulles Intl - Toronto Pearson Intl. You may also consider Washington, D.C. Dulles Intl - Toronto Island or Washington, D.C. Dulles Intl - Hamilton.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Washington, D.C. Dulles Intl Airport to Toronto on time: ANA (95%), Copa Airlines (86%), Republic Airways (86%).

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

    The cheapest flight price from Washington, D.C. Dulles Intl Airport to Toronto is $123. On average you can expect to pay $1,300. The most popular route, (Washington, D.C. Dulles Intl - Toronto Pearson Intl), can usually be booked for $301.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl to Toronto 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 Toronto?

    Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Toronto (average of $54). Flying from Washington, D.C. Dulles Intl Airport to Toronto in February is currently the most expensive (average of $179). 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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Top 5 airlines flying from Dulles Intl to Toronto

Discover the top 5 airlines that operate flights from Dulles Intl to Toronto. 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 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$54Average$239FlexibilityNo cancel feeOn-time52%
DeltaCheapest$106Average$147FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$187Average$364FlexibilityNo cancel feeOn-time67%
Air TransatCheapest$211Average$263FlexibilityNo cancel feeOn-time50%
United AirlinesCheapest$251Average$379FlexibilityNo cancel feeOn-time69%

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